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Accura 2700M Integrated Incoming-Unit Module

Accura 2700M is installed in the MCC incoming unit and performs the main function of the Smart Motor Management System. It measures the total power consumed at the MCC by sensing the voltage and current of the incoming line. It also monitors the power of each motor unit by sending sampled voltage data to all connected Accura 2750P[C] modules via internal communication cables. Through the internal communication network, Accura 2700M delivers and receives measurement data, motor control commands, and operating status information to and from multiple Accura 2750P[C] modules at the MCC. It also exchanges the same data with multiple Accura 2750LC[I] modules at the LOP(Local Operating Panel) through Accura 2750LCG. Accura 2700M sends this data to Accura 2700D, the integrated incoming-unit HMI module, enabling users to monitor the operating status of all motors from the MCC front panel. It is connected to the host system via Ethernet or RS-485 communication.

Connection to Accura 2750P[C]
Transmits incoming line voltage data to multiple Accura 2750P[C] modules
Collects measurement and operating data for each motor unit from multiple Accura 2750P[C] modules
Proprietary protocol	2 ports with identical functions (UNIT1, UNIT2)
2 ports for ring topology	Supports communication redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Number of connectable Accura 2750P[C] modules	Maximum 30 (ring topology)
Communication cable length	Between Accura 2700M and Bridge-Socket	Maximum 1 m (for Accura 2700M device redundancy)
	Between Accura 2700M and Unit-Socket	Standard: within 3 m,Maximum: 10 m¹
	Between Unit-Sockets	Maximum 3 m
	Between Unit-Socket and Accura 2750P[C]	Maximum 1.5 m
	Total ring network length	Maximum 90 m
Power Measurement of MCC Incoming Line
Measures and analyzes the power characteristics of the entire MCC by sensing the incoming-line voltage and current
Measurement Parameter
Voltage	Line-to-neutral voltage (per phase/average, maximum), Line-to-line voltage (each line-to-line/average, maximum)
	Fundamental RMS (per phase/average)
	Harmonics (per phase, up to the 50th order), THD (per phase, maximum)
	Vector diagram (phasor diagram)
	Symmetrical components(positive-, negative-, zero-sequence, maximum), Unbalance (IEC, NEMA, maximum)
	Dip(Sag), Swell
Frequency	Instantaneous, maximum, minimum
Current	RMS (per phase/average, maximum), Fundamental RMS (per phase/average)
	Harmonics (per phase, up to the 50th order), THD (per phase, maximum), TDD (per phase, maximum)
	Vector diagram (phasor diagram)
	Symmetrical components(positive-, negative-, zero-sequence, maximum), Unbalance (IEC, NEMA, maximum)
	Demand current (per phase, average), Peak demand current (per phase, average)
	Crest Factor (per phase, maximum), K-factor (per phase, maximum)
Power	Active, Reactive, Apparent (per phase/ total, maximum)
	Demand active power (per phase/total), Peak demand active power (per phase/total)
Power factor	Per phase, total
Active energy	Three-phase total (Received, Delivered, Sum, Net)
Reactive energy	Three-phase total (Received, Delivered, Sum, Net)
Apparent energy	Three-phase total
External Communication with the Host System
Ethernet communication	100Base-TX (100 Mbps/Full Duplex) Modbus TCP protocol Accura 2700M redundancy	2 ports with identical functions (ETHERNET1, ETHERNET2)
	2 ports: Ethernet switching, RSTP	Supports communication redundancy using a ring topology
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable wiring method	Star, Daisy-chain, Ring
RS-485 communication	1,200 - 115,200 bps²Modbus RTU protocol	1 port (Ta, Tb, SG)
	Connector type	Screw-type terminal (pluggable)
	Communication cable	UL 2919 RS-485 1P/2P 24 AWG
Connection to Accura 2700D
Ethernet communication with the HMI module	100Base-TX (100 Mbps/Full Duplex) Proprietary protocol	1 port (DISPLAY A2700D)
	Connector type	RJ45 connector
	Communication cable³	Ethernet cable Cat 5e FTP(F/UTP)
	Communication cable length	3 m
	Power supply through the communication cable
Connection to Accura 2750LCG
Communication with the LOP control module	Proprietary protocol	2 ports with identical functions (A2750LCG-1, A2750LCG-2)
	2 ports	Supports Accura 2750LCG device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable length	Maximum 300 m per port
Power Supply
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us

1. The recommended cable length is within 3 m. In ring topology configurations, the allowable cable length is up to 10 m if the total cable length in the ring does not exceed 90 m.
2. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m.
3. A communication cable for the display module is included with Accura 2700D. For redundant configurations of Accura 2700M, an additional display module communication cable must be ordered.

Accura 2700D Integrated Incoming-Unit HMI Module

Accura 2700D is installed on the front of the MCC incoming unit and is connected to Accura 2700M via an Ethernet cable. Via communication, it displays data from Accura 2700M, as well as measurement, control, and operating status data for multiple Accura 2750P[C] and Accura 2750LC[I] modules collected by Accura 2700M, on its front-panel TFT color LCD screen. All functions of Accura 2700M, Accura 2750P[C] and Accura 2750LC[I] can be configured through the TFT color LCD touch panel. For redundancy, Accura 2700D can connect to two Accura 2700M modules simultaneously via its two built-in communication ports.

Connection to Accura 2700M
Displays data from Accura 2700M, multiple Accura 2750P[C] and Accura 2750LC[I] modules collected by Accura 2700M via communication on the TFT color LCD screen
Performs setup for the functions of Accura 2700M, multiple Accura 2750P[C] and Accura 2750LC[I] modules connected to Accura 2700M via communication
100Base-TX (100 Mbps/Full Duplex) Proprietary protocol			2 ports with identical functions (DISPLAY1, DISPLAY2)
2 ports			Supports Accura 2700M redundancy
Connector type			RJ45 connector
Communication cable¹			Ethernet cable Cat 5e FTP (F/UTP)
Communication cable length			3 m
Display Specifications
Display size			8.5” (184.8 x 110.88 mm)
VGA transmissive color TFT (LED backlight and touch panel)
USB
High-speed USB 2.0 (Host)			Micro USB port
Power Supply
Power supply voltage			Supplied from Accura 2700M via the communication cable

1. A communication cable for the display module is included with Accura 2700D. For redundant configurations of Accura 2700M, an additional display module communication cable must be ordered.

Accura 2750P[C] Motor-Unit Protection[Control] Module

Accura 2750P is installed at each motor unit in the MCC and primarily protects the motor by measuring the current supplied to it. Protection functions are executed based on one-cycle RMS values measured over a single cycle. It also measures the various power characteristics of the motor unit using current data from its built-in CT and the voltage data received from Accura 2700M via communication. For inverter-driven motors, it measures the various power characteristics of the motor unit using sampled inverter output voltage data, which is processed with a Low Pass Filter(LPF) and received from Accura 2750INV/VOL module via communication. Accura 2750PC provides motor control functions in addition to the measurement and protection functions of Accura 2750P.

Connection to Accura 2700M through Unit-Socket
Receives incoming-line voltage data from Accura 2700M
Transmits motor measurement and operating status data to Accura 2700M
Proprietary protocol	1 port (UNIT-SOCKET)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 1.5 m
Power Measurement of Motor-Unit Branch Line
Measures and analyzes various power characteristics of the motor-unit branch line using voltage data received from Accura 2700M and current data from the branch line.
Measures and analyzes the various power characteristics of the motor-unit branch line using the inverter output voltage data received from Accura 2750INV/VOL module.

Measurement Parameter
Current	RMS (per phase/average, maximum per phase/average), Fundamental (per phase/average)
	Harmonics (per phase, up to the 31st order), THD (per phase, maximum), TDD (per phase, maximum)
	Vector diagram (phasor diagram)
	Symmetrical components(positive-, negative-, zero-sequence, maximum), Unbalance (IEC, NEMA, maximum)
	Maximum starting current(per phase/average), Maximum running current (per phase/average)
	Demand (per phase/average), Peak demand (per phase/average)
	Crest Factor (per phase, maximum), K-factor (per phase, maximum)
Ground current¹	Ground current (RMS value measured by the built-in ZCT): instantaneous, maximum
	Residual ground current (RMS value measured by summing three-phase currents): instantaneous, maximum
Power	Active, Reactive, Apparent (per phase/total, maximum per phase/total)
	Demand, Peak demand (per phase/total)
Power factor	Per phase, total
Active energy	Three-phase total (Received, Delivered, Sum, Net)
Reactive energy	Three-phase total (Received, Delivered, Sum, Net)
Apparent energy	Three-phase total
Motor Protection Function
Measures and analyzes current data to protect individual motors powered by the motor unit
Protection Relay Elements
Thermal protection	THR(49)
Overcurrent protection	Overcurrent(50TD), JAM(50LR-TD), Long Start Relay(48), Instantaneous Overcurrent(50)
Current unbalance protection	Unbalance(46), Phase out current relay(46), Phase sequence relay(46)
Undercurrent protection	Undercurrent(37)
Ground fault current protection¹	Built-in ZCT(64), Sum of 3-phase currents(50G-TD)
Magnetic contactor	Magnetic contactor supervision
Motor Control Function (Supported only in Accura 2750PC)
Starts and stops single/three-phase motors and monitors their operation status
Motor control functions are available by default. However, you can customize them using the AccuraLogic Editor to meet specific application requirements.

Starter Mode
Overload Relay	Performs the protection function only when used with Accura 2750P
Direct Starter	Starts/stops the motor in one direction
Reversing Starter	Starts/stops the motor in both forward and reverse directions
2-speed Starter	Changes the motor polarity for speed control
2-step Starter	Changes the wiring configuration during startup to reduce starting current
Custom Starter	Controls motor operation using user-defined control logic
Connection to Accura 2750D[C/CI]² Motor-Unit HMI Module
Proprietary protocol	1 port (DISPLAY)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	1 m
Digital Input/Output
Digital input	Accura 2750P	1 channel (external power supply input)
	Accura 2750PC	10 channels (external power supply input)
	External power supply: AC 220 V or AC/DC 110 V (selectable when ordering the device)
Digital output	Accura 2750P	3 channels (2 Form-A channels, 1 Form-C channel)
	Accura 2750PC	4 channels (3 Form-A channels, 1 Form-C channel)
Temperature Measurement
Number of temperature sensors on Accura 2750P[C]	1
Power Supply
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us

1. When using external CTs with Accura 2750P[C]-5A model, the accuracy of ground current and residual ground current measurement is not guaranteed in a 3-CT connection
(using three external CTs) due to potential errors in the external CTs. In a 2-CT connection (using 2 external CTs), ground current and residual ground current are not measured.
2. For an inverter unit, it communicates with Accura 2750DCI module via Accura 2750INV/VOL module.

Accura 2750PC-ACB Protection & Control Module

The main function of Accura 2750P[C]-ACB module is to trip the ACB by measuring the secondary current of the CT built in the ACB unit and operating protection relays. The Instantaneous Over Current Relay operates rapidly based on the instantaneous values of sampled current signals. Other protection relays operate based on the one-cycle RMS values measured over one cycle. When the relay operates, it sends trip signals to the ACB through the fault signal and the MHT(Magnetic Holding Trigger) signal. When mapping the digital output, either the Fault or MHT signal can be selected. It also measures various power characteristics of the ACB unit based on the measured current data and the sampled voltage data received from Accura 2700M via communication. General specifications for the measurements and protection relays of Accura 2750P[C]-ACB module are the same as those of Accura 2750P[C] motor-unit protection[control] module. The features of Accura 2750P[C]-ACB module are as follows.

ACB Protection and Power Measurements
Operates the protection relay by measuring the secondary current from the CT installed in the ACB unit
Measures and analyzes power characteristics using the measured current data and the sampled voltage data received from Accura 2700M via communication
Measurement Parameters¹
Measures the parameters same as those of Accura 2750P[C] module
ACB Protection²
Base current setup	FLC setup
Time Over Current Relay	The relay operation mode can be configured during motor starting.
Instantaneous Over Current Relay	Operates rapidly when a high current flows. - Operates within 16 ms when the measured current reaches 120 % of the set threshold. - Operates within 8 ms when the measured current reaches 200 % of the set threshold.
Long Time Over Current Relay	Operates based on the thermal inverse-time curve (THR cold curve)
Ground Fault Relay	Operates based on the current measured by the built-in ZCT of Accura 2750P[C]-ACB module.
Digital Input/Output
Digital input	Accura 2750P	1 channel (external power supply input)
	Accura 2750PC	10 channels (external power supply input)
	External power supply: AC 220 V or AC/DC 110 V (selectable when ordering the device)
Digital output	Accura 2750P	3 channels (2 Form-A channels, 1 Form-C channel)
	Accura 2750PC	4 channels (3 Form-A channels, 1 Form-C channel)
Power Supply
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us

1. When using external CTs with the module, the measured value is displayed as the value converted into the CT's primary current
and includes the measurement error of the external CT.
2. When using external CTs with the Accura 2750P[C]-ACB module, the set current value is based on the module's input current value.

Terminal Block

As the motor's rated current increases, a larger-diameter power cable should be used. For Accura 2750PC-160A/250A/400A models with high current ratings, you can use either the separately provided terminal block or the through-hole busbar for installation.
Easy Installation of Accura 2750PC-160A/250A and Accura 2750PC-400A
The terminal block can be installed on the load side or both sides of the module without requiring a large-diameter power cable to pass directly through the module.
Space is saved when the MCCB of the motor unit is connected directly to the through-hole busbar.
Model	Description
TM-PC-160A	Terminal block for Accura 2750PC-160A
TM-PC-250A	Terminal block for Accura 2750PC-250A
TM-PC-400A	Terminal block for Accura 2750PC-400A

Accura 2750INV/VOL Inverter-Unit Voltage Measurement[Control] Module

The inverter output voltage signal is required to measure the output power of the motor unit driven by the inverter. Accura 2750INV/VOL module processes the inverter output voltage through a Low Pass Filter(LPF) to generate voltage data, which is transmitted to Accura 2750P[C] module via communication. It also includes a dedicated RS-485 communication port for direct communication with inverters that support RS-485 communication. In addition, Accura 2750INV module provides additional digital I/O channels, enabling an easy-to-use, hardwired interface for connection with the inverter.

Output Voltage Measurement of the Inverter Unit
Provides voltage data by processing the inverter output voltage through a Low Pass Filter(LPF)
Frequency measurement range	5 - 180 Hz
Cut-off frequency of LPF	188 Hz
Connection to Accura 2750P[C]
Transmits inverter-unit voltage data to Accura 2750P[C] via internal communication
Proprietary protocol	1 port (A2750PC)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	Maximum 3 m
Connection to Accura 2750DCI Motor-Unit HMI Module
Proprietary protocol	1 port (DISPLAY A2750DCI)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	1 m
Connection to Inverter (RS-485 Communication)
Receives inverter status data and controls the inverter via RS-485 communication
Modbus RTU protocol	1 port (Ta, Tb, SG)
Connector type	Screw-type terminal (pluggable)
Communication cable	UL 2919 RS-485 1P/2P 24 AWG
Digital Input/Output
Digital input	Accura 2750INV	5 channels (external power supply input)
Digital output	Accura 2750INV	9 Form-A channels
	Accura 2750VOL	1 Form-C channel
Power Supply
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us

Accura 2750D[C/CI] Motor-Unit/Inverter-Unit Protection[Control] HMI Module

Accura 2750D[C/CI] Motor-Unit Protection[Control] HMI Module

Installed on the front of individual motor units, Accura 2750D[C/CI] is connected to Accura 2750P[C] using an Ethernet cable. When measuring an inverter’s output power, Accura 2750INV/VOL is installed to measure the inverter’s output voltage. Using Ethernet cables, Accura 2750DCI module is connected to Accura 2750INV/VOL module, and Accura 2750INV/VOL module is then connected to Accura 2750PC module. Accura 2750D[C/CI] collects data on the measurement, protection and operational status of Accura 2750P[C] and Accura 2750LC[I] via internal communication and provides various data through the LCD screen. You can also configure all functions of Accura 2750P[C] and some functions of Accura 2750LC[I] on Accura 2750D[C/CI] module. With Accura 2750D's features, Accura 2750DC provides the RUN and STOP buttons for motor start/stop control. In addition to the functions of Accura 2750DC, Accura 2750DCI provides the INVERTER/BYPASS and AUTO/MANUAL buttons for inverter operation. You can choose Accura 2750DC-AO or Accura 2750DC-RS485 module as an optional module for Accura 2750DC.

Connection to Accura 2750P[C]¹
Collects data from Accura 2750P[C] and Accura 2750LC[I] modules via internal communication and displays various information on the LCD screen
Allows configuration of all functions of Accura 2750P[C] and selected functions of Accura 2750LC[I]
Proprietary protocol	2 ports with identical functions (DISPLAY1, DISPLAY2)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	1 m
Power supplied by Accura 2750P[C] via the communication cable
Display Specifications
2.7” graphic 80x128 Dots (58.0 x 40.0 mm) FSTN LCD
Front Buttons
4 multi-function buttons (short press: changes direction / long press: performs special functions)	Left(<)/ESC, Up(^)/SETUP, Down(∨)/EVENT, Right(>)/ENTER
1 Test/Reset button	TEST/RESET
3 motor Run/Stop buttons	RUN1, RUN2, STOP	Accura 2750DC[I] only
1 Local/Remote button	LOCAL/REMOTE	Accura 2750DC[I] only
1 INVERTER/BYPASS button	INVERTER/BYPASS	Accura 2750DCI only
1 AUTO/MANUAL button	AUTO/MANUAL	Accura 2750DCI only
Power Supply
Power supply voltage	Supplied by Accura 2750P[C]

1. Accura 2750DCI module communicates with Accura 2750PC module through Accura 2750INV/VOL module.

Accura 2750IRM Insulation Resistance Measurement Module


Functions
Insulation Resistance Measurement¹
Measures motor insulation resistance by applying a DC test voltage of 500 V or 1000 V.
Corrects the measured insulation resistance to the reference temperature.		Reference temperature: 40 °C (configurable)
Provides IR, PI, and DAR values for insulation diagnosis.
Supports safe insulation resistance testing through an interlock function and automatic discharge.
Digital Input
Provides an interlock function² by monitoring the open/closed status of the MC (magnetic contactor).
Digital Output
Uses DO Channel 5 to issue an open command to the MC (magnetic contactor).
Uses DO Channel 6 to output an insulation resistance alarm.

1. Testing can be performed using the Accura 2750DC module or AccuraSM software.
2. The interlock function simultaneously monitors the MC contact status through a digital input and the RUN status received from Accura 2750PC.

Accura 2750LCG LOP Control Gateway

Accura 2750LCG performs two-way data transmission between Accura 2700M and multiple Accura 2750LC[I] modules. Accura 2750LCG supports two ports for communication with two Accura 2700M modules for redundancy. Accura 2750LCG supports two networks (two ports per group) for communication with Accura 2750LC[I]. It supports communication redundancy via ring topology of Accura 2750LC[I] using two ports in a single group. Up to 15 Accura 2750LC[I] modules can be connected in a single ring topology, and up to 30 modules can be connected in a dual ring topology. Accura 2750LCG supplies 24 V DC power to Accura 2750LC[I] through the communication cable. Due to the limit on the power supply of Accura 2750LCG, when more than 10 Accura 2750LC[I] modules are connected per network group, an Accura 2750LC POW module must be added to the rear of an Accura 2750LC[I] module to support up to 15 modules per group.

Connection to Accura 2700M
Proprietary protocol	2 ports with identical functions (A2700M-1, A2700M-2)
2 ports for connecting two Accura 2700M modules	Supports Accura 2700M redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 300 m per port
Connection to Accura 2750LC[I]
Proprietary protocol	4 ports with identical functions (LC/LM-1, LC/LM-2, LC/LM-3, LC/LM-4)
	Group 1 2 ports: LC/LM-1, LC/LM-2
	Group 2 2 ports: LC/LM-3, LC/LM-4
2 ports per group for ring topology	Supports communication redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 800 m per group
Power supply via the communication cable	24 V DC / 50 W
Maximum number of connectable Accura 2750LC[I] modules	15 per group (ring topology), 30 for two groups
Power Supply
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rated output voltage/power	24 V DC / 50 W

Accura 2750LC[I] LOP Control Module

Accura 2750LC[I] is the digital control module for the LOP (Local Operating Panel), replacing traditional LOPs that consist of push buttons, lamps, selection switches, and current meters. Accura 2750LC performs motor control commands and displays motor operating status and measurement data through communication with Accura 2700M via Accura 2750LCG. In addition to the functions of Accura 2750LC, Accura 2750LCI provides the INVERTER/BYPASS buttons for inverter operation. In traditional LOPs, when RUN/STOP commands are executed by pressing a push button, the signals are sent to Accura 2750PC through signal cables connected between the push button contacts and the digital inputs of Accura 2750PC. However, when the RUN/STOP buttons on Accura 2750LC[I] are pressed, the control command is transmitted to Accura 2700M through Accura 2750LCG. Accura 2700M performs the command by sending it to Accura 2750PC via communication. This communication method is advantageous because a single communication cable replaces multiple signal cables used to connect the MCC and the LOP in conventional systems. It also allows users to easily detect cable disconnection and short-circuit conditions. Accura 2750LCG supports communication redundancy through a ring topology using two ports on Accura 2750LC[I].

Connection to Accura 2750LCG
Accura 2750LCG functions as the gateway between Accura 2700M and Accura 2750LC[I].
Motor-unit commands from the LOP are transmitted to Accura 2750PC via Accura 2750LCG and Accura 2700M.
Current, power, and operational status data from the corresponding motor unit are transmitted from Accura 2750PC to Accura 2750LC[I] via Accura 2700M and Accura 2750LCG.
Proprietary protocol	2 ports with identical functions (LC/LM-A, LC/LM-B)
2 ports for ring topology	Supports communication redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 800 m per group
Power supply via the cable	24 V DC supplied from Accura 2750LCG
Maximum number of connectable Accura 2750LC[I] modules	15 per group (ring topology)
	An Accura 2750LC POW module must be added when the number of connected Accura 2750LC[I] modules exceeds 10.
Motor Control Function
Transmits motor start/stop control commands and monitors motor operating status in the field
Optional Module: LC Power Module (Accura 2750LC POW)
The POW module can be added to the rear of Accura 2750LC[I] module.
LC Power Module	Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
	Operating voltage range	0.8 x Us - 1.1 x Us
	Rated output voltage/power	24 V DC / 20 W
Power Supply
Accura 2750LC[I] receives power from Accura 2750LCG through the communication cable.
Power supply via communication cable	Accura 2750LCG: 24 V DC (supplies power to up to 10 Accura 2750LC modules per group)
Additional power supply via LC power module	Accura 2750LC POW: 24 V DC (supplies power to up to 10 Accura 2750LC[I] modules)

Accura 2750LM/IO Logic Control Module / IO Module


Accura 2750LM Logic Control Module
Option	-AC220V/DC110V-DI110V	Power supply: AC 100 - 240 V, DC 100 - 300 V
		Digital input: Externally powered, DC 110 V
	-DC24V-DI24V	Power supply: DC 18 - 32 V
		Digital input: Externally powered, DC 24 V
	-AC220V/DC110V-INT	Power supply: AC 100 - 240 V, DC 100 - 300 V
		Digital input: Internally powered, DC 24 V
	-DC24V-INT	Power supply: DC 18 - 32 V
		Digital input: Internally powered, DC 24 V
Description	Communicates with the host system via RS-485 or Ethernet
	Provides 18 DI channels and 9 DO channels
	Can be connected to Accura 2750IO modules to expand I/O functionality
	Can be connected to the Accura 2750LD HMI module
Accura 2750LD HMI Module for Logic Control
Description	4 buttons and a 5-inch color TFT LCD with a touch panel
	Setup, control, and status monitoring
Accura 2750IO IO Module
Accura 2750IO-DI1
Option	-DI110V	Digital input: Externally powered, DC 110 V
	-DI24V	Digital input: Externally powered, DC 24 V
	-INT	Digital input: Internally powered, DC 24 V
Description	Digital inputs: 11 channels
Accura 2750IO-DI2
Option	-DI110V	Digital input: Externally powered, DC 110 V
	-DI24V	Digital input: Externally powered, DC 24 V
	-INT	Digital input: Internally powered, DC 24 V
Description	Digital inputs: 22 channels
Accura 2750IO-DIO
Option	-DI110V	Digital input: Externally powered, DC 110 V
	-DI24V	Digital input: Externally powered, DC 24 V
	-INT	Digital input: Internally powered, DC 24 V
Description	Digital inputs and outputs: 11 DI channels and 6 DO channels
Accura 2750IO-DO1
Description	Digital outputs: 6 channels
Accura 2750IO-DO2
Description	Digital outputs: 12 channels
Accura 2750IO-AI1
Description	Analog inputs: 6 channels; input range: 4 - 20/ 0 - 20 mA DC
Accura 2750IO-AI2
Description	Analog inputs: 12 channels; input range: 4 - 20/ 0 - 20 mA DC
Accura 2750IO-RTD1
Description	Pt100/Pt1000 RTD inputs: 4 channels
Accura 2750IO-RTD2
Description	Pt100/Pt1000 RTD inputs: 8 channels

Unit-Socket

One Accura 2700M module and multiple Accura 2750P[C] modules are connected via communication. For high reliability and convenience, Category 5e FTP, STP, or SFTP Ethernet cables are used. Accura 2700M should be connected to Accura 2750P[C] modules of individual motor units using the daisy-chain method. A Unit-Socket is provided for convenient installation of communication cables and easy withdrawal of motor units. A single Ethernet cable connects the Unit-Socket to Accura 2750P[C], allowing the communication cable to be easily disconnected when withdrawing motor units.

Easy Connection of Internal Communication Cables
Unit-Sockets connect Accura 2750P[C] modules through communication cables and allow easy cable disconnection when withdrawing a motor unit. Disconnecting a cable does not affect communication with other motor units.
The communication cable’s input/output structure eliminates T-stub connections.
Communication Port
Number of ports	3 (RJ45A, A2750, RJ45B; RJ45A and RJ45B ports have identical functions.)
Connector type	RJ45 connector

Bridge-Socket

Through the Bridge-Socket, two Accura 2700M modules share the communication network of Accura 2750P[C]. It allows for the redundant wiring of Accura 2700M modules. Two Accura 2750LCG modules also share the communication network of Accura 2750LC[I] through the Bridge-Socket, allowing for the redundant wiring of Accura 2750LCG.

Support for Redundancy
Sharing Accura 2750P[C]’s network enables redundant wiring of Accura 2700M modules.
Sharing Accura 2750LC[I]’s network enables redundant wiring of Accura 2750LCG modules.
Communication Port
Number of ports	3 (CH_A, COM, CH_B; CH_A and CH_B ports have identical functions.)
Connector type	RJ45 connector

Accura 2700M Integrated Incoming-Unit Module

Power Supply
Port name	L+, N-, G (Earth Ground)
Connector type	Screw-type terminal (pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rated power consumption	Maximum 15 VA (AC 220 V, 25 °C) during supercapacitor charging and when connected to Accura 2700D
Rated insulation voltage (Ui)	300 V (pollution degree 2)
Rated impulse voltage (Uimp)	4 kV
Inrush current	Peak 31 A, duration no more than 1 ms (AC 220 V)
	Peak 11 A, duration no more than 200 μs (DC 110 V)
External input fuse rating	2 A, 500 V
Allowable instantaneous power outage duration	Minimum 10 seconds (with built-in supercapacitor)
Voltage Input
Port name	V1, V2, V3, VN
Connector type	Terminal block M4
Wire specifications	2.1 - 5.0 mm² (14 - 10 AWG)
Measuring range	AC 65 - 300 V direct L-N (Line-to-Neutral)		Accuracy IEC 61557-12 Class 0.5
	AC 110 - 520 V direct L-L (Line-to-Line)
Minimum measured value	AC 5 V direct L-N (Line-to-Neutral)
Rated voltage	520 V
Rated insulation voltage (Ui)	520 V (overvoltage category III, pollution degree 2)
Rated impulse withstand voltage (Uimp)	8 kV
Frequency measurement	42 - 69 Hz (50/60 Hz)
Impedance	6 MΩ (L-N: V1/V2/V3-Vn)
Burden	0.01 VA/phase @ 220 V
Current Input
Port name	I1, I2, I3, IN
Connector type	Terminal block M4 (internal busbar)
Wire specification	2.1 - 5.0 mm² (14 - 10 AWG)
Input rating	5 A @ CT 5 A
	1 A @ CT 1 A
Maximum input current	10 A @ CT 5 A (twice the rated current)
	2 A @ CT 1 A (twice the rated current)
Measuring range (accuracy guaranteed)	50 mA - 10 A @ CT 5 A		Accuracy IEC 61557-12 Class 0.2
	50 mA - 2 A @ CT 1 A
Minimum measured value	20 mA @ CT 5 A (minimum settable value: 5 mA)
	5 mA @ CT 1 A (minimum settable value: 5 mA)
Sampling	256 samples/cycle
Overcurrent capacity	1,000 % of the rated current for 1 second 200 % of the rated current (continuous)
Burden	Maximum 0.01 VA/phase @ 10 A
External Communication with the Host System
Ethernet communication	100Base-TX (100 Mbps/Full Duplex) Modbus TCP Protocol Supports Accura 2700M device redundancy		2 ports with identical functions (ETHERNET1, ETHERNET2)
	2 ports: Ethernet switching¹, RSTP²		Supports communication redundancy via a ring topology
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP, STP, SFTP³
	Communication cable length		Maximum 100 m
	Communication cable wiring method		Star, Daisy-chain, Ring topology
	Maximum number of connectable devices in a daisy chain		20
RS-485 communication	1,200 - 115,200 bps, Modbus RTU protocol		1 port (Ta, Tb, SG)
	Connector type		Screw-type terminal (pluggable)
	Communication cable		UL 2919 RS-485 1P/2P 24 AWG
	Communication cable length		Maximum 1,219 m (4,000 ft)
	Maximum number of connectable devices		32 units per bus⁴
Module Connection
Connection to Accura 2700D, the HMI module	100Base-TX (100 Mbps/Full Duplex) Proprietary protocol		1 port (DISPLAY A2700D)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP(F/UTP)⁵
	Communication cable length		3 m⁶
	Power supply via the communication cable
Connection to Accura 2750P[C], the motor protection[control] module, via the Unit-Socket	Proprietary protocol		2 ports with identical functions (UNIT1, UNIT2)
	2 ports for ring topology		Supports communication redundancy
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP, STP, SFTP
	Number of connectable Accura 2750P[C] modules		Maximum 30 (ring topology)
	Communication cable length	Between Accura 2700M and Bridge-Socket	Maximum 1 m (for Accura 2700M device redundancy)
		Between Accura 2700M and Unit-Socket	Standard: within 3 m, Maximum: 10 m⁷
		Between Unit-Sockets	Maximum 3 m
		Between Unit-Socket and Accura 2750P[C]	Maximum 1.5 m
		Total cable length for the entire ring network	Maximum 90 m
Connection to Accura 2750LC[I], the LOP control module, via Accura 2750LCG	Proprietary protocol		2 ports with identical functions (A2750LCG-1, A2750LCG-2)
	2 ports for connecting two 2750LCG modules		Supports Accura 2750LCG redundancy
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable length		Maximum 300 m per port
Management Function
Management of Accura 2750P[C]	Maximum number of connectable modules in a ring topology: 30
	Management function	Performs MCC server functions in response to host system requests
		Automatically assigns unit IDs and detects the insertion or withdrawal of motor units
		Transmits incoming-unit voltage data
		Collects measurement and operating status data from each module
		Provides module setup information via Accura 2700D and the communication interface
		Sends digital output (DO) control commands to the modules
		Sends Accura 2750PC control logic data via communication
		Supports the auto-restart function of Accura 2750PC after a power outage or power recovery
Management of Accura 2750LC[I]	Maximum number of connectable Accura 2750LC[I] modules via Accura 2750LCG: 30 (15 per ring, 2 rings supported)
	Management function	Transmits current, power, and motor status data from Accura 2750PC to Accura 2750LC[I]
		Transmits motor-unit control commands from Accura 2750LC[I] to Accura 2750PC
Events	Monitored item	Voltage dip/swell

1. The built-in Ethernet switch allows Ethernet connection among Accura 2700M modules without an external Ethernet switch.
2. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004
3. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
4. At 115,200 bps, a master can communicate with up to 16 slave devices over a maximum distance of 600 m.
5. FTP(F/UTP): Foiled Shielded Twisted Pairs
6. A communication cable for the display module is included with Accura 2700D. For redundant Accura 2700M configurations, an additional display module communication cable must be ordered separately.
7. The recommended cable length is within 3 m. For ring topology configurations, the allowable cable length is up to 10 m if the total cable length of the ring does not exceed 90 m.

Accura 2700D Integrated Incoming-Unit HMI Module

Power Supply
Power supply	Powered by Accura 2700M via the communication cable
LCD
LCD features	8.5” (184.8 x 110.88 mm) VGA Transmissive Color TFT
	LED backlight and touch panel
LED
Number of front LEDs	6
	EVENT	Orange	Turns on when a caution event occurs in the module (can be set to blink)
	ALARM	Orange	Turns on when an alarm event occurs in the module (can be set to blink)
	FAULT	Red	Turns on when a fault event occurs in the module (can be set to blink)
	ETHERNET	Green	Blinks during communication with the host system via Ethernet (can be set to remain on)
	RS-485	Green	Blinks during communication with the host system via RS-485 (can be set to remain on)
	COMM	Green	Blinks when Accura 2700M communicates with Accura 2750P[C] (can be set to remain on)
Buttons
Number of front buttons	4 (Additional functions beyond button operation can be performed via the front touch panel.)
	HOME	Navigates to the HOME TOP screen or measurement screen
	SETUP	Navigates to the SETUP TOP screen or setup screen
	EVENT	Navigates to the EVENT TOP screen or event screen
	BACK	Returns to the previous screen

USB
	High-speed USB 2.0 (Host)	Micro USB port
Module Connection
Connection to Accura 2700M for Ethernet communication	100Base-TX (100 Mbps/full-duplex) Proprietary protocol	2 ports with identical functions (DISPLAY1, DISPLAY2)
	2 communication ports	Supports Accura 2700M redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP(F/UTP)¹
	Communication cable length	3 m²
	Powered via the communication cable

1. FTP(F/UTP): Foiled Shielded Twisted Pairs
2. A communication cable for the display module is included with Accura 2700D. For redundant Accura 2700M configurations, an additional display module communication cable must be ordered separately.

Accura 2750D[C/CI] Motor-Unit Protection[Control] HMI Module

Power Supply
Power supply	Powered by Accura 2750P[C] via a communication cable
LCD
LCD features	2.7” Graphic 80x128 dots (58.0 x 40.0 mm) FSTN LCD with LED backlight
LED
Module operating state LEDs	EVENT	Orange	Turns on when a caution event occurs (can be set to blink)
	COMM	Green	Blinks when Accura 2700M communicates with Accura 2750P[C] (can be set to remain on)
	ALARM	Orange	Turns on when an alarm event occurs (can be set to blink)
	FAULT¹	Red	Turns on when a fault event occurs (can be set to blink)
	MCCB TRIP²	Red	Turns on when an MCCB Trip signal is input to the motor unit (can be set to blink)
Motor operating state LEDs (Accura 2750DC[I] Only)	RUN1	Red	Indicates that the motor is operating in the normal direction or in Speed 1 mode
	RUN2	Red	Indicates that the motor is operating in the reverse direction or in Speed 2 mode
	STOP	Green	Indicates that the motor is stopped
Control mode LED (Accura 2750DC[I] Only)	LO	Green	Turns on when Local is selected as the MCC control mode
	RE	Orange	Turns on when Remote is selected as the MCC control mode
Inverter operation mode LED (Accura 2750DCI Only)	INV	Green	Turns on when the motor operates in inverter mode
	BPS	Orange	Turns on when the motor operates in bypass mode
	AUTO	Green	Turns on when the inverter operating mode is set to Auto
	MANU	Orange	Turns on when the inverter operating mode is set to Manual
Buttons
Direction/special function buttons	4 multi-function buttons for changing directions (short press) and performing special functions (long press)
	Left(<)/ESC		Navigates left and performs the ESC function
	Up(^)/SETUP		Navigates up and enters SETUP mode
	Down(∨)/EVENT		Navigates down and enters EVENT mode
	Right(>)/ENTER		Navigates right and performs the Enter function
Test/Reset multi-function button	TEST		Generates sampled current data from Accura 2750P[C] Performs measurement/protection and DIO tests (operates only when no events are active)
	RESET		Resets events on the motor unit (when an event occurs)
Motor control buttons (Accura 2750DC[I] Only)	RUN1		Executes a run command in the forward direction or speed 1 mode
	RUN2		Executes a run command in the reverse direction or speed 2 mode
	STOP		Executes a stop command
Control mode button (Accura 2750DC[I] Only)	LOCAL		Selects Local as the MCC control mode.
	REMOTE		Selects Remote as the MCC control mode.
Inverter operation mode button (Accura 2750DCI Only)	INVERTER		Sets the motor to inverter mode.
	BYPASS		Sets the motor to bypass mode.
	AUTO		The motor operates in inverter mode according to the frequency command.
	MANUAL		The motor operates in inverter mode at a fixed frequency.
Module Connection
Connection to Accura 2750P[C]	Proprietary protocol		2 ports with identical functions (DISPLAY1, DISPLAY2)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP(F/UTP)³
	Communication cable length		1 m
	Power supplied from Accura 2750P[C]

1. The Accura 2750DCI module is equipped with two LEDs (INVERTER and BYPASS) and an additional LED that indicates the MCCB Trip state.
2. The MCCB TRIP LED is available only on the Accura 2750DCI module, which also includes the INVERTER and BYPASS LEDs.
3. FTP(F/UTP): Foiled Shielded Twisted Pairs

Accura 2750P[C] Motor-Unit Protection[Control] Module

Power Supply
Port name	L+, N-, G (Earth Ground)
Connector type	Screw-type terminal (pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rated power consumption	Maximum 13 VA (AC 220 V, 25 °C) when all digital outputs are operating and the supercapacitor is charging
Rated insulation voltage (Ui)	300 V (at pollution degree 2)
Rated impulse voltage (Uimp)	4 kV
Inrush current	Peak 40 A, duration no more than 400 μs (AC 220 V)
	Peak 18 A, duration no more than 200 μs (DC 110 V)
External input fuse rating	2 A, 500 V
Allowable instantaneous power outage duration	Minimum 10 seconds (with built-in supercapacitor)
Voltage Input
Voltage input	Receives sampled voltage data from Accura 2700M via communication
	Receives inverter output voltage data for the inverter-driven motor unit via communication from Accura 2750INV/VOL module

Current Input
Connector type	Through-hole type
Items	Model	Through-hole diameter	Rated current	Motor FLC setup range	Maximum measured current
	Accura 2750P[C]-5A	Ø12 mm	5 A	0.5 - 5 A	40 A
	Accura 2750P[C]-30A	Ø12 mm	30 A	3.0 - 30 A	240 A
	Accura 2750P[C]-100A	Ø19 mm	100 A	10.0 - 100 A	800 A
	Accura 2750PC-160A	Ø25 mm	160 A	16.0 - 160 A	1280 A
	Accura 2750PC-250A	Ø25 mm	250 A	25.0 - 250 A	2000 A
	Accura 2750PC-400A	Ø30 mm	400 A	40.0 - 400 A	3200 A

Digital Inputs
Number of channels / Input type	Accura 2750P	1 (external power supply input)
	Accura 2750PC	10 (external power supply input)
Connector type	Screw-type terminal (pluggable)
Wire specification	0.21 - 3.5 mm² (24 - 12 AWG)
Insulation method	Insulated between groups / uninsulated within a group
	Group 1: Channels 1 - 5 (1DI₁ - 1DI₅), common: 1DI_G
	Group 2: Channels 6 - 10 (2DI₆ - 2DI₁₀), common: 2DI_G
Minimum pulse width	50 ms
External Power Supply for Accura 2750P	AC 220 V	AC/DC 110 V
Input impedance	499 kΩ	246 kΩ
Low voltage range	0 - 40 Vac	0 - 20 Vac/Vdc
High voltage range	170 - 240 Vac	70 - 130 Vac/Vdc
External Power Supply for Accura 2750PC	AC 220 V	AC/DC 110 V
Input impedance	405 kΩ	225 kΩ
Low voltage range	0 - 140 Vac	0 - 60 Vac/Vdc
High voltage range	165 - 240 Vac	85 - 130 Vac/Vdc
Digital Outputs
Number of channels / Output type	Accura 2750P	3 channels (2 Form-A channels, 1 Form-C channel)
	Accura 2750PC	4 channels (3 Form-A channels, 1 Form-C channel)
Connector type	Screw-type terminal (pluggable)
Wire specification	1.5 - 3.5 mm² (16 - 12 AWG)
Insulation	AC 2,000 V for 1 minute
Output rating	Form A: AC-15 5 A/250 Vac, DC-13 5 A/30 Vdc (DO1 - DO3)
	Form C: AC-15 3 A/250 Vac, DC-13 3 A/30 Vdc (DO4)
LCD
LCD features	1.2” (24.5 x 21.0 mm) customized monochrome LCD with LED backlight
Connection to Modules
Connection to the Unit-Socket	Proprietary protocol	1 port (UNIT-SOCKET)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP¹
	Communication cable length	Maximum 1.5 m
Connection to Accura 2750D[C/CI] HMI module	Proprietary protocol	1 port (DISPLAY)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP(F/UTP)²
	Communication cable length	1 m

Temperature Measurement³
Temperature sensor	Located on the lower left side of the front panel
Temperature measuring range	-20 - 100 °C
Accuracy	±2 % Full Scale (Full Scale: 100 °C)

Motor Protection Relay
Thermal Relay(THR)	Thermal inverse time (UL 60947-4-1, IEC 60255-149)
Time Over Current Relay(OCR)	Definite time, Inverse time
Phase Out Current Relay(POCR)	Definite time
Phase Sequence Relay(PSR)	Definite time
Unbalance Current Relay(UBCR)	Definite time
Long Start Relay(LSR)	Definite time
Jam Relay(JAM)	Definite time
Ground Fault Current Relay(GR) by ZCT Current	Definite time
Residual Ground Fault Current Relay(GR) by the sum of 3-phase currents	Definite time
Under Current Relay(UCR)	Definite time
Instantaneous Over Current Relay(I.OCR)	Instantaneous and Definite time
Magnetic Contactor Supervision(MCS)	Definite time
Control Function (Available only on Accura 2750PC)
Motor start/stop	Overload protection (overload relay): No start/stop function
	Direct Starter
	Reversing Starter
	2-Speed Starter
	2-Step Starter
	Custom Starter
Auto restart	Power outage/recovery	Auto	Automatically detects the power outage/recovery status of the Accura 2750PC module⁴
		Manual	Determines the power outage/recovery status based on the measured incoming-unit voltage
	Motor-unit power supply	Power outage threshold	AC 140 V
		Power recovery threshold	AC 165 V
	Measured voltage of the incoming unit	Power outage threshold	40 % of the reference voltage
		Power recovery threshold	60 % of the reference voltage
	Auto-Restart Enable Time	0.1 - 2.0 s
	Auto-Restart Disable Time	0.1 - 10.0 s
	Auto-Restart Delay	1 - 600 s
	UV Start threshold	40 - 110 %
	UV End threshold	60 - 110 %
Management Function
Motor management	Operating status	Determines the motor operating status by analyzing changes in current (start, run, and stop states)
	Preventive maintenance	Monitors variations in starting current and starting time
		Accumulates total running and stopping time
		Performs motor diagnostics based on data such as the number of starts and the average load ratio
Events⁵	Monitored items	Operating state of each protection relay function
		Start Inhibit status
		DO status change
		DI status change (can be used as a status input to the CB or MC)
		Redundancy error
		Control command error
		Operating limit
		Self-diagnosis
		Auto restart

1. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
2. FTP(F/UTP): Foiled Shielded Twisted Pairs
3. It is not for fire monitoring, but for reference only.
4. The power supply is connected to the DI, and the corresponding DI is configured for Control Power Monitoring.
5. Events are classified as Fault, Alarm, Caution, and General events according to importance.
The notification function is supported for Fault, Alarm, and Caution events.

Accura 2750PC-ACB Protection & Control Module

Power Supply	Same as Accura 2750P[C]
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Current Input	Through-Hole Diameter	Rated Current	Motor FLC Setup Range	Maximum Measured Current
	Ø12 mm	5 A	0.50 - 5 A	240 A
Digital Inputs	Same as Accura 2750P[C]
Number of channels / Input type	Accura 2750P		1 (external power supply input)
	Accura 2750PC		10 (external power supply input)
External Power Supply for Accura 2750P	AC 220 V		AC/DC 110 V
Input impedance	499 kΩ		246 kΩ
Low voltage range	0 - 40 Vac		0 - 20 Vac/Vdc
High voltage range	170 - 240 Vac		70 - 130 Vac/Vdc
External Power Supply for Accura 2750PC	AC 220 V		AC/DC 110 V
Input impedance	405 kΩ		225 kΩ
Low voltage range	0 - 140 Vac		0 - 60 Vac/Vdc
High voltage range	165 - 240 Vac		85 - 130 Vac/Vdc
Digital Outputs	Same as Accura 2750P[C]
Number of channels / Output type	Accura 2750P		3 (2 Form-A channels, 1 Form-C channel)
	Accura 2750PC		4 (3 Form-A channels, 1 Form-C channel)
Output rating¹	Form-A: AC-15 5 A/250 Vac, DC-13 5 A/30 Vdc (DO1 - DO3)
	Form-C: AC-15 3 A/250 Vac, DC-13 3 A/30 Vdc (DO4)
Measurement Parameters²
Current	Accuracy		IEC 61557-12 Class 0.5
	Measuring range (accuracy guaranteed)		0.6 A - 30 A
	Min/Max measured value		0.30 A / 240 A
	CT primary current range		1.0 - 9,999.9 A (default: 5.0 A)
	CT secondary current range		1.0 - 5.0 A (default: 5.0 A)
ACB Protection Relay³
ACB Trip signals⁴	Fault signal		Latch-type signal cleared by a fault reset
	MHT signal		Pulse-type signal with a width of 12 ms
Over Current Relay (OCR)	Trip characteristic		Definite time for alarm conditions
			Inverse time or definite time for fault conditions
	Operating condition		Active during motor starting and running (starting interval selectable)
	Input		RMS current for each phase
	Fault Threshold		90 - 1000 % FLC
	Fault Curve Type		Definite time / IEC Curve A / IEC Curve B / IEC Curve C / LTI
	Fault Time Delay		0.05 - 99.99 s
	Fault TMS		0.05 - 10.00
	Alarm Threshold		90 - 1000 % FLC
	Alarm Time Delay		0.05 - 99.99 s
	Startup Blocking		Disable/Enable
	Accuracy		Operation threshold: ±5 % Operation time: ±5 % or ±35 ms, whichever is greater
Instantaneous Over Current Relay (I.OCR)	Trip characteristic		Instantaneous
	Operating condition		Active during motor starting and running
	Input		RMS current for each phase
	Fault Threshold⁵		200 - 1600 % FLC
	Accuracy		Operation threshold: ±5 %
			Operation time: - ≤16 ms at 120 % of the set threshold current - ≤8 ms at 200 % of the set threshold current
Long Time Over Current Relay (LT.OCR)	Trip characteristic		Inverse time, thermal
	Operating condition		Active during motor starting and running
	Input		RMS current per phase
	Fault Threshold		80 - 110 % FLC
	Fault Time Delay		0.5 - 30.0 s
	Accuracy		Operation time: ±5 % or ±35 ms, whichever is greater

1. Check the rating and characteristics of the shunt trip coil used to trip the ACB, and determine whether to control it
directly or via additional relays.
2. When using external CTs with the module, the measured value is displayed as the CT primary current.
Set values should be entered based on the module's input current.
3. The set values of the ACB protection relay should be entered based on the module's input current.
4. All protection relays of Accura 2750P[C]-ACB module generate Fault and MHT (Magnetic Holding Trigger) signals as ACB trip signals.
Either the Fault or MHT signal can be selected when mapping the digital output.
5. The threshold value is set based on the RMS value, and the relay operates based on instantaneous peak value obtained by multiplying the RMS value by √2.

Accura 2750INV/VOL Inverter-Unit Voltage Measurement[Control] Module

Power Supply¹
Port name	L+, N-, G (Earth Ground)
Connector type	Screw-type terminal (pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rated voltage (Us)	AC 110 - 240 V 50/60 Hz, DC 110 - 300 V
Operating voltage range	0.8 x Us - 1.1 x Us
Rated power consumption	Maximum 13 VA (AC 220 V, 25 °C) when all digital outputs are operating and the supercapacitor is charging
Rated insulation voltage (Ui)	300 V (at pollution degree 2)
Rated impulse withstand voltage (Uimp)	4 kV
Inrush current	Peak 31 A, duration no more than 1 ms (AC 220 V)
	Peak 11 A, duration no more than 200 μs (DC 110 V)
External input fuse rating	2 A, 500 V
Allowable instantaneous power outage duration	Minimum 10 seconds (with built-in supercapacitor)
Voltage Input
Port name	V1, V2, V3, VN²
Connector type	Screw-type terminal (pluggable)
Wire specification	0.21 - 3.5 mm² (24 - 12 AWG)
Measuring range	AC 5 - 300 V direct L-N (Line-to-Neutral voltage)
	AC 9 - 520 V direct L-L (Line-to-Line voltage)
Minimum measurement	AC 5 V direct L-N (Line-to-Neutral voltage)
Rated operational voltage	520 V
Rated insulation voltage (Ui)	520 V (overvoltage category III, pollution degree 2)
Rated impulse voltage (Uimp)	8 kV
Frequency measurement range	5 - 180 Hz
Low-pass filter cut-off frequency	188 Hz
Impedance	6 MΩ (L-N: V1/V2/V3-Vn)
Burden	0.01 VA/phase @220 V
Digital Inputs¹
Number of channels / Input type	5 (external power supply input)
Connector type	Screw-type terminal (pluggable)
Wire specification	0.21 - 3.5 mm² (24 - 12 AWG)
Insulation method	Uninsulated between groups
	Group 3: Channels 11 - 15 (3DI₁₁ - 3DI₁₅), common: 3DI_G
Input impedance	405 kΩ
Maximum input voltage	AC 240 V
Low voltage range	AC 0 - 140 V
High voltage range	AC 165 - 240 V
Minimum pulse width	50 ms
Digital Outputs
Number of channels / Output type	9 (Form-A): Channels 5 - 13			@ Accura 2750INV
	1 (Form-C): Channel 5			@ Accura 2750VOL
Connector type	Screw-type terminal (pluggable)
Wiring specification	1.5 - 3.5 mm² (16 - 12 AWG)
Insulation	AC 2,000 V for 1 minute
Output rating	Form-A: AC-15 5 A/250 Vac, DC-13 5 A/30 Vdc (DO1 - DO3)
	Form-C: AC-15 3 A/250 Vac, DC-13 3 A/30 Vdc (DO4)
RS-485 Communication
Port name	Ta, Tb, SG(Shield-Ground)
Connector type	Screw-type terminal (pluggable)
Protocol	1,200 - 115,200³ bps, Modbus RTU
Wire specification	UL 2919 RS-485 1P/2P 24 AWG
Communication cable length	Maximum 1,219 m (4,000 ft)
LED
Front LEDs	POWER	Green	Turns on when the power supply is normal
	DEVICE	Green	Blinks when the device is operating normally (can be set to remain on)
Connection to Modules
Connection to the motor protection & control module	Proprietary protocol		1 port (A2750PC)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP(F/UTP)⁴
	Communication cable length		3 m
Connection to Accura 2750DCI, the HMI module	Proprietary protocol		1 port (A2750DCI)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP(F/UTP)⁴
	Communication cable length		1 m
Measurement Specifications
Voltage wiring method	3P3W
Sampled measurement data	Inverter output voltage waveforms
Frequency measurement range	5 - 180 Hz
Number of samples per cycle	64 samples/cycle
Voltage measurement method	True RMS measurement (low-pass filter cut-off frequency: 188 Hz)
Voltage	Accuracy	IEC 61557-12 Class 0.5
	Measuring range	L-L voltage	AC 9 - 520 V	AC 110 - 520 V (accuracy guaranteed)
		L-N voltage	AC 5 - 300 V	AC 65 - 300 V (accuracy guaranteed)
	Minimum measured value	L-N voltage	AC 5 V
	Measurement data	Line-to-Line voltage (per phase/average, maximum per phase / maximum average)
		Line-to-Neutral voltage (per phase/average)
		Fundamental Line-to-Line voltage (per phase/average)
		Unbalance (negative-sequence, zero-sequence component, maximum)

1. The Accura 2750VOL module does not support the DI function.
2. The VN terminal is connected to the V3 terminal.
3. At 115,200 bps, a master can communicate with up to 16 slave devices over a maximum distance of 600 m.
4. FTP(F/UTP): Foiled Shielded Twisted Pairs

Accura 2750IRM Insulation Resistance Measurement Module

Test Voltage
Port name	V, G
Wire specification	0.21 - 3.5 mm² (24 - 12 AWG)
Applied test voltage	DC 500 V / 1000 V (selectable)
Insulation Resistance Measurement
Measuring range	1 - 1500 MΩ	At 500 V DC test voltage
	1 - 3000 MΩ	At 1000 V DC test voltage
Accuracy / Guaranteed accuracy range	±10 % of reading / 1 - 500 MΩ	At 500 V DC test voltage
	±10 % of reading / 1 - 1000 MΩ	At 1000 V DC test voltage
Digital Input
Number of channels	1 (internal power supply)
Port name	3DI11, 3DIG
Wire specification	0.21 - 3.5 mm² (24 - 12 AWG)
Digital Output
Number of channels	2 (Form-A)
Port name	DO5, DO5G / DO6, DO6G
Wire specification	1.5 - 3.5 mm² (16 - 12 AWG)
Maximum open-contact voltage	1,000 V
Insulation	AC 2,000 V for 1 minute, with isolation between channels
Output rating	AC-15 5 A/250 Vac, DC-13 5 A/30 Vdc
Communication Port	Used to Connect to Accura 2750PC
Connector type	RJ45 connector
Protocol	Proprietary protocol
Communication cable	Cat. 5e Ethernet cable, FTP(F/UTP)¹
Communication cable length	Maximum 3 m
Communication Port	Used to Connect to Accura 2750DC
Connector type	RJ45 connector
Protocol	Proprietary protocol
Communication cable	Cat. 5e Ethernet cable, FTP(F/UTP)¹
Communication cable length	1 m
LED Display
POWER (Green)	Turns on when the power supply to the module is normal.
DEVICE (Green)	Blinks during normal module operation. This LED can be configured to remain on.

1. FTP(F/UTP): Foiled Shielded Twisted Pairs

Accura 2750LCG LOP Control Gateway

Power Supply
Port name	L+, N-, G (Earth Ground)
Connector type	Screw-type terminal (pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rated output voltage/power	24 V DC / 50 W
Rated power consumption	Maximum 60 VA (AC 220 V, 25 °C) when connected to 30 Accura 2750LC[I] modules
Rated insulation voltage (Ui)	300 V (at pollution degree 2)
Rated impulse withstand voltage (Uimp)	4 kV
Inrush current	Peak 40 A, duration no more than 1.5 ms (AC 220 V)
	Peak 18 A, duration no more than 300 μs (DC 110 V)
External input fuse rating	2 A, 500 V
Allowable instantaneous power outage duration	Typical 50 ms
Module Connection
Connection to Accura 2700M	Proprietary protocol	2 ports with identical functions (A2700M-1, A2700M-2)
	2 ports for connection to two Accura 2700M devices	Supports Accura 2700M redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable length	Maximum 300 m per port
Connection to Accura 2750LC[I]	Proprietary protocol	4 ports (LC/LM-1, LC/LM-2, LC/LM-3, LC/LM-4); The ports within the same group have identical functions.
		2 ports in Group 1: LC/LM-1, LC/LM-2
		2 ports in Group 2: LC/LM-3, LC/LM-4
	2 ports per group: used for ring topology	Supports communication redundancy¹
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP²
	Total communication cable length	Maximum 800 m per group
	Power supply via the communication cable	24 V DC / 50 W³
	Maximum number of connectable Accura 2750LC[I] modules	15 per group, 30 for 2 groups (Dual ring topology)
LCD
LCD features	1.2” (24.5 x 21.0 mm) customized monochrome LCD with LED backlight
Buttons
Number of front buttons	1 (for status check and device setup)

1. A ring topology should be created using two ports in the same group. Ring topologies using ports from different groups are not supported.
2. FTP (Foiled Shielded Twisted Pairs), STP (Braided Shielded Twisted Pairs), SFTP (Braided Foiled Shielded Twisted Pairs)
3. If more than 10 Accura 2750LC[I] modules are connected per group, one additional Accura 2750LC POW module must be connected.

Accura 2750LC[I] LOP Control Module

Power Supply
Power supply	24 V DC power is supplied from Accura 2750LCG through the communication cable (Accura 2750LCG can supply power to up to 10 Accura 2750LC[I] modules per group)¹
Rated power consumption	Maximum 1 W (DC 24 V, 25 °C)
Functions
Provides the function to stop the motor
Displays the current and power values for each phase
Inhibits motor operation during inspection
Displays event data and resets events
Module Connection
Connection to Accura 2750LCG	Proprietary protocol	2 ports with identical functions (LC/LM-A, LC/LM-B)
	2 ports for ring topology	Supports communication redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP⁴
	Total communication cable length	Maximum 800 m per group
	Power supply via the communication cable	24 V DC power is supplied from Accura 2750LCG¹
	Maximum number of connectable Accura 2750LC[I] modules	15 per group (ring topology)
FND
FND features	10.0 mm (0.39”) digit height seven-segment display (3-row 4-digit)
LED
Module management state LED	EVENT	Orange	Turns on when a caution event occurs (can be set to blink)
	COMM	Green	Blinks when Accura 2700M communicates with Accura 2750LC[I] (can be set to remain on)
	ALARM	Orange	Turns on when an alarm event occurs (can be set to blink)
	FAULT	Red	Turns on when a fault event occurs (can be set to blink)
FND data LED	A	Green	Turns on when the FND display indicates current value
	kW	Green	Turns on when the FND display indicates power value
Motor operating state LED	RUN1	Red/Green/Orange	Turns on when the motor rotates in the forward direction or operates in speed 1 mode
	RUN2	Red/Green/Orange	Turns on when the motor rotates in the reverse direction or operates in speed 2 mode
	STOP	Red/Green/Orange	Turns on when the motor stops
	TEST	Green	Turns on when the unit is in test mode
	RESET	Red/Orange	Turns on when a fault event occurs (Turns off when an alarm or caution event occurs)
Control mode LED (Accura 2750LC Only)	LO	Green	Turns on when Local is selected as the LOP control mode
	RE	Orange	Turns on when Remote is selected as the LOP control mode
Inverter operation mode (Accura 2750LCI Only)	INV	Green	Turns on when the motor operates in inverter mode
	BPS	Orange	Turns on when the motor operates in bypass mode
Safety LOCK KEY state LED	UNLOCK	Green	Turns on when the safety lock key is unlocked²
	LOCK	Red	Turns on when the safety lock key is locked (for on-site inspection safety)
Buttons
Buttons for changing directions and performing special functions	Left(<)/ESC	Used to navigate left and perform the ESC function
	Up(^)/SETUP	Used to navigate up and enter SETUP mode
	Down(∨)/EVENT	Used to navigate down and enter EVENT mode
	Right(>)/ENTER	Used to navigate right and perform the ENTER function
Test/Reset multi-function button	TEST	Used to check the connected Accura 2750P[C] module (Operates only when no events are active)
	RESET	Used to reset motor-unit events (Operates when an event occurs)
Motor control button	RUN1	Executes a run command for the forward direction or speed 1 mode
	RUN2	Executes a run command for the reverse direction or speed 2 mode
	STOP	Executes a stop command
Control mode button (Accura 2750LC Only)	LOCAL	Selects Local as the LOP control mode
	REMOTE	Selects Remote as the LOP control mode
Inverter operation mode button (Accura 2750LCI Only)	INVERTER	Sets the motor to inverter mode
	BYPASS	Sets the motor to bypass mode
Safety LOCK KEY	Unlock	Normal operation state³
	Lock	Motor start inhibit state
Temperature Measurement
Temperature sensor	Located on the side of the device
Temperature measuring range	0 - 100 °C
Accuracy	±2 % Full Scale (Full Scale: 100 °C)
LC Power Module: Optional module connectable to the rear of Accura 2750LC[I]
Port name	L+, N-, G (Earth Ground)
Connector type	Screw-type terminal (pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rated voltage (Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rated output voltage/power	24 V DC / 20 W
Rated insulation voltage (Ui)	300 V (at pollution degree 2)
Rated impulse withstand voltage (Uimp)	4 kV
Inrush current	Peak 31 A, duration no more than 1.5 ms (AC 220 V)
	Peak 11 A, duration no more than 300 μs (DC 110 V)
External input fuse rating	2 A, 500 V
Allowable instantaneous power outage duration	Typical 50 ms

1. If more than 10 Accura 2750LC[I] modules are connected per group, one additional Accura 2750LC POW module should be connected.
2. When the safety LOCK KEY status is changed from LOCK to UNLOCK, if other modules remain locked,
the red LED (LOCK) turns on and the green LED (UNLOCK) blinks to indicate that the system is in the locked state.
3. The motor can be started only when the locked status of the other modules has been cleared.
4. FTP (Foiled Shielded Twisted Pairs), STP (Braided Shielded Twisted Pairs), SFTP (Braided Foiled Shielded Twisted Pairs)

Accura 2750LM/IO Logic Control Module / IO Module

Accura 2750LM Logic Control Module
Power Supply
Port name	L+, N-, G (earth ground)
Connector type	Terminal block
Wire size / torque	0.34 - 4.0 mm² (22 - 12 AWG) / 1.36 Nm (13.8 kgf-cm, 12.0 lbf-in)
Rated insulation voltage (Ui)	150 V
Rated impulse withstand voltage (Uimp)	1 kV
Power option	-AC220V/DC110V		-DC24V
Rated voltage (Us)	AC 100 - 240 V, DC 100 - 300 V		DC 18 - 32 V
Power consumption	Maximum 20 W at 25 °C when connected to Accura 2750LD and Accura 2750IO modules
Digital Input (DI)
Number of channels	18
Connector / connection type	Pluggable connector / push-in spring connection
Wire size / torque	0.25 - 2.5 mm² (24 - 14 AWG) / 0.25 Nm (2.5 kgf-cm, 2.2 lbf-in)
Insulation voltage	Maximum AC 2,000 V for 1 minute
DI option	-DC110V		-DC24V	-INT
Input type	Externally powered, 110 V DC		Externally powered, 24 V DC	Internally powered, 24 V DC
Excitation current	2 - 6 mA at high voltage		0.5 - 1.5 mA at high voltage
Low voltage range	DC 0 - 55 V		DC 0 - 10 V	DC 0 - 5 V
High voltage range	DC 80 - 145 V		DC 16 - 32 V	DC 15 - 32 V
Digital Output (DO)
Number of channels	9
Connector / connection type	Pluggable connector / push-in spring connection
Wire size / torque	0.25 - 2.5 mm² (24 - 14 AWG) / 0.25 Nm (2.5 kgf-cm, 2.2 lbf-in)
Output type	Dry contact (external excitation), Form A contact
Maximum open contact voltage	1,000 V
Insulation voltage	Maximum AC 2,000 V for 1 minute
Output rating	AC-15: 5 A / 250 V, DC-13: 5 A / 30 V
Output signal mode	Latch
External Communication with Host System
RS-485 communication	Modbus RTU protocol, 1,200 - 115,200 bps¹		1 port (Ta, Tb)
	Communication cable		UL 2919 RS-485 1P/2P 24 AWG
	Maximum communication cable length		1,219 m (4,000 ft)
	Maximum number of connectable devices		32 per bus¹
Module Connections
Communication with Accura 2700M	Proprietary protocol		2 ports with identical functions (A2700M-1, A2700M-2)
			Supports Accura 2700M redundancy
	Connector type		RJ45 connector
	Communication cable		Ethernet cable, 24 AWG solid copper, Cat. 5e, FTP, STP, SFTP²
	Communication cable length		Up to 300 m per port
Communication with Accura 2750LD HMI module	100 Base-TX (100 Mbps/Full Duplex) Proprietary protocol		1 port (DISPLAY)
	Communication cable		Ethernet cable 24 AWG solid copper, Cat.5e, FTP (F/UTP)³
	Communication cable length		3 m
Communication with Accura 2750IO	Proprietary protocol		2 ports with identical functions (IO-1, IO-2)
			Supports communication redundancy in a ring topology
	Connector type		RJ45 connector
	Communication cable		Ethernet cable, 24 AWG solid copper, Cat.5e, FTP, STP, SFTP
	Total cable length		Up to 100 m when devices are connected in a ring topology
	Maximum number of connectable Accura 2750IO modules		15 (ring topology)
Management Functions
Accura 2750IO module management	Up to 15 modules can be connected in a ring topology.
	Management function		Sends control commands to each module
			Collects measurement and status information from each module

Accura 2750LD HMI Module for Logic Control
Power Supply
Power source	Receives power from Accura 2750LM through its built-in connector or the internal communication cable for the HMI module
LCD Display
LCD features	5" (108.0 x 64.8 mm) Color TFT LCD, 800 x 480 pixels
	Front-panel LCD touchscreen with LED backlight
LED
LEDs on the front panel	4 LEDs
	POWER	Turns on when power is on
	EVENT	Blinks when an event occurs (It can be configured to remain on.)
	RS485	Blinks when Accura 2750LM communicates with the host system via RS485 (It can be configured to remain on.)
	MODULE	Blinks when Accura 2750LM communicates with Accura 2750IO module (It can be configured to remain on.)
Buttons
Buttons on the front panel	4 buttons
	HOME	Moves to the module display screen
	SETUP	Moves to the module setup screen
	EVENT	Moves to the module event screen
	BACK	Moves to the previous screen
Connection to Accura 2750LM
Communication with Accura 2750LM	100 Base-TX(100 Mbps/full duplex), proprietary protocol		1 port (DISPLAY)
	Communication cable length		3 m

Accura 2750IO IO Module
Common
Power supply	Supplied by Accura 2750LM through the communication cable
Communication ports	Port name	RJ45-A, RJ45-B (ring/daisy-chain connection)
	Connector type	RJ45
	Protocol	Proprietary protocol
	Communication cable	Ethernet cable, 24 AWG solid copper, Cat. 5e, FTP, STP, SFTP²
Rotary switch	Communication ID	1 - 15
	Standby ID	0 (factory default; communication disabled)
Digital Input	Connector	Pluggable connector / push-in spring connection
	Wire size/torque	0.25 - 2.5 mm² (24 - 14 AWG) / 0.25 Nm (2.5 kgf-cm, 2.2 lbf-in)
	Insulation voltage	Maximum AC 2,000 V for 1 minute
	Option	-DI110V	-DI24V	-INT
	Input type	Externally powered, 110 V DC	Externally powered, 24 V DC	Internally powered, 24 V DC
	Excitation current	2 - 6 mA at high voltage	0.5 - 1.5 mA at high voltage
	Low voltage range	DC 0 - 55 V	DC 0 - 10 V	DC 0 - 5 V
	High voltage range	DC 80 - 145 V	DC 16 - 32 V	DC 15 - 32 V
Digital Output	Connector	Pluggable connector / push-in spring connection
	Wire size/torque	0.25 - 2.5 mm² (24 - 14 AWG) / 0.25 Nm (2.5 kgf-cm, 2.2 lbf-in)
	Output type	Dry contact (external excitation), Form A contact
	Insulation voltage	Maximum AC 2,000 V for 1 minute
	Output rating	AC-15: 5 A / 250 V, DC-13: 5 A / 30 V
	Maximum open contact voltage	1,000 V
	Output signal mode	Latch
Accura 2750IO-DI1
Digital input	Number of channels	11
Accura 2750IO-DI2
Digital input	Number of channels	22
Accura 2750IO-DIO
Digital input	Number of channels	11
Digital output	Number of channels	6
Accura 2750IO-DO1
Digital output	Number of channels	6
Accura 2750IO-DO2
Digital output	Number of channels	12
Accura 2750IO-AI1, Accura 2750IO-AI2
Analog input	Number of channels	AI1 module	6
		AI2 module	12
	Analog input type	DC 4 - 20 mA/ 0 - 20 mA current
	Input signal type	Single-ended input with isolated common terminals between channels
	Internal input resistance	130 Ω
	Accuracy	±0.5 % full scale (full scale: 20 mA)
Accura 2750IO-RTD1, Accura 2750IO-RTD2
Analog input	Number of channels	RTD1 module	4
		RTD2 module	8
	Sensor type	Pt100 / Pt1000
	Wiring method	2-wire / 3-wire
	Temperature range	-100 - 200 °C
	Accuracy	±0.5 % of full scale (full scale: 200 °C)

Accura 2750PS Module
Power Supply⁴
Input power supply	Port name	L+, N-, NC, ⏚(Ground)
	Connector type	Screw-type terminal (pluggable)
	Wire size/torque	2.1 - 3.5 mm² (14 - 12 AWG), copper / 0.6 Nm (6.1 kgf-cm, 5.3 lbf-in)
	Wire temperature rating	70 °C or higher
	Power supply voltage (Us)	AC 100 - 240 V 50/60 Hz, DC 100 - 300 V, CAT II
	Operating voltage	0.9 x Us - 1.1 x Us
	Power consumption	Maximum 20 W (based on input power)
	Inrush current	Peak 31 A, duration: no more than 1 ms (AC 220 V)
		Peak 11 A, duration: no more than 0.2 ms (DC 110 V)
	External input fuse rating⁵	2 A, 500 V
Output power supply	Port name	RJ45A, RJ45B: Used to supply power to Accura 2750IO modules
		+ 24 V - : screw-type, auxiliary output terminals
	Output voltage	DC 23 - 25 V
	Output power	Maximum 15 W (based on output power)
Load Status LED Indicator
Load	Illuminated LED Color
Less than 50 %	Blue
50 - 80 %	Blue, Yellow
80 - 100 %	Blue, Yellow, Red

1. Up to 15 modules can be connected per bus at 115,200 bps.
2. FTP: Foiled Shielded Twisted Pairs, STP: Braided Shielded Twisted Pairs, SFTP: Braided Foiled Shielded Twisted Pairs
3. This cable is provided with the product. FTP(F/UTP): Foiled Shielded Twisted Pairs
4. To ensure proper operation at power-up, Accura 2750LM and Accura 2750PS modules should be powered on simultaneously using a single switch.
5. When installing a fuse on the power input line, it is recommended to use a UL-listed Class RK5 or higher-rated fuse rated at 2 A/500 V.

Unit-Socket

Functions
Communication cable connections per unit	The Unit-Socket connects Accura 2750P[C] modules via communication cables and allows easy cable disconnection when withdrawing a motor unit. Disconnecting a cable does not affect communication with other motor units.
	The communication cable’s input/output structure eliminates T-stub connections.
Communication
Port	Number of ports		3 (RJ45A, A2750, RJ45B) RJ45A and RJ45B ports have identical functions.
	Connector type		RJ45 connector
RJ45A, RJ45B port	Used to connect to Accura 2700M or an adjacent Unit-Socket
	Supports communication redundancy via a ring topology
	Communication cable length	Between Accura 2700M and Unit-Socket	Standard: within 3 m, Maximum: 10 m¹
		Between Bridge-Socket and Unit-Socket	Standard: within 3 m, Maximum: 10 m¹ (for Accura 2700M redundancy)
		Between Unit-Sockets	Maximum 3 m
Accura 2750 port	Used to connect to Accura 2750P[C]
	Communication cable length		Maximum 1.5 m

1. The recommended cable length is within 3 m. In ring topology configurations, the allowable cable length is up to 10 m if the total cable length of the ring does not exceed 90 m.

Bridge-Socket

Functions
Support for communication redundancy	Two Accura 2700M modules share the communication network of Accura 2750P[C].
	Two Accura 2750LCG modules share the communication network of Accura 2750LC[I].
Communication
Port	Number of ports	3 (CH_A, COM, CH_B); CH_A and CH_B ports have identical functions.
	Connector type	RJ45 connector
Accura 2750P[C] Network Sharing
CH_A, CH_B ports	Used to connect Accura 2700M modules
	Communication cable length	Maximum 1 m
COM port	Used to connect to the Unit-Socket
	Communication cable length	Standard: within 3 m, Maximum: 10 m¹
Accura 2750LC[I] Network Sharing
CH_A, CH_B ports	Used to connect Accura 2750LCG modules
	Communication cable length	Maximum 1 m
COM port	Used to connect Accura 2750LC[I] modules
	Total communication cable length	Maximum 800 m per group (up to 15 Accura 2750LC[I] modules in a ring topology)

1. The recommended cable length is up to 3 m. In ring topology configurations, the allowable cable length is up to 10 m if the total cable length of the ring does not exceed 90 m.

General Specifications

Certification and Standard
UL	UL 61010-1 3rd edition, UL 60947-4-1
CE	EN 55011:2009 +A1:2010, EN 61326-1:2013, EN 61000-3-2:2014, EN 61000-3-3:2013
KC	KN 32, KN 35
CCC	GB/T 14048.4-2010
Environmental Condition
Operating temperature	-20 - 60 °C (-4 - 140 ℉)
Storage temperature	-40 - 85 °C (-40 - 185 ℉)
Operating humidity	5 - 95 % (non-condensing)
Operating altitude	Up to 2,000 m
Dust Proof and Water Proof
Accura 2700M	IP20	IEC 60529
Accura 2700D	IP54	IEC 60529
Accura 2750P[C]	IP20	IEC 60529
Accura 2750INV/VOL	IP20	IEC 60529
Accura 2750D[C/CI]	IP54	IEC 60529
Accura 2750LCG	IP20	IEC 60529
Accura 2750LC[I]	IP54	IEC 60529
Accura 2750LM	IP20	IEC 60529
Accura 2750LD	IP54	IEC 60529
Accura 2750IO-DI2/DO1/DO2/AI1/RTD2	IP20	IEC 60529
Unit-Socket	IP20	IEC 60529
Bridge-Socket	IP20	IEC 60529
Vibration
Accura 2700M, Accura 2700D, Accura 2750P[C], Accura 2750INV/VOL, Accura 2750D[C/CI], Accura 2750LCG, Accura 2750LC, Unit-Socket, Bridge-Socket	10 - 150 Hz, 20 m/s² (Panel mounting)	IEC 60068-2-6
Shock
All modules	15 g / 11 ms	IEC 60068-2-27
Heat Resistance
All product cases	V0	UL 94
	960 °C	IEC 60695-2-11
Membrane Accura 2750D[C/CI] LCD Window	V2	UL 94
	650 °C	IEC 60695-2-11
EMC Immunity	IEC 61326-1, IEC 6100-3-2, IEC 61000-3-3
Electrostatic discharge immunity	8 kV / air	IEC 61000-4-2
	4 kV / contact
Radiated radio-frequency electromagnetic field immunity	10 V/m	IEC 61000-4-3
Electrical Fast Transient/Burst	2 kV/5 kHz(power)	IEC 61000-4-4
	1 kV/5 kHz(signal)
Surge immunity	2 kV(line-earth)	IEC 61000-4-5
	1 kV(line-line)
Immunity to conducted disturbances induced by radio-frequency field	10 V	IEC 61000-4-6
Power frequency magnetic field immunity	30 A/m	IEC 61000-4-8
Voltage dips, short interruptions and voltage variations immunity	0 %, 1 cycle	IEC 61000-4-11
	40 %, 10/12 cycles
	70 %, 25/30 cycles
	80 %, 250/300 cycles¹
EMC Emission	EN 55011
Conducted emission and radiated emission	Class A Group
Item	Weight	Dimensions
Accura 2700M	610 g	75.0W x 157.0H x 94.0D
Accura 2700D	1010 g	239.8W x 184.7H x 42.5D
Accura 2750P-5A/30A	527 g	95.2W x 91.0H x 90.0D
Accura 2750P-100A	729 g	113.2W x 91.0H x 105.0D
Accura 2750PC-5A/30A	590 g	105.2W x 91.0H x 90.0D
Accura 2750PC-100A	786 g	123.2W x 91.0H x 105.0D
Accura 2750PC-160A/250A	1200 g	126.4W x 73.0H x 135.2D
Accura 2750PC-400A	2000 g	158.0W x 73.0H x 144.0D
Accura 2750PC-ACB	590 g	105.2W x 91.0H x 90.0D
TM-PC-160/250A	118 g	133.0W x 80.2H x 30.0D
TM-PC-400A	210 g	164.0W x 99.2H x 35.0D
Accura 2750INV	385 g	84.8W x 91.0H x 105.0D
Accura 2750VOL	175 g	46.8W x 91.0H x 90.0D
Accura 2750D	118 g	94.0W x 80.0H x 30.9D
Accura 2750DC	136 g	115.5W x 80.2H x 30.9D
Accura 2750DC-AO	180 g	115.5W x 80.2H x 48.9D
Accura 2750DC-RS485	180 g	115.5W x 80.2H x 48.9D
Accura 2750DCI	175 g	98.7W x 115.8H x 30.9D
Accura 2750IRM	46.8W x 91.0H x 90.0D	200 g
Accura 2750LCG	440 g	82.0W x 110.0H x 88.0D
Accura 2750LC	340 g	129.6W x 156.5H x 57.0D
Accura 2750LCI	340 g	129.6W x 156.5H x 57.0D
Accura 2750LC POW	170 g	86.2W x 91.0H x 38.0D
Accura 2750LM	148.6W x 126.6H x 77.2D	550 g
Accura 2750LD	151.5W x 129.6H x 33.0D	400 g
Accura 2750IO-DO1/AI1	25.0W x 103.0H x 114.5D	200 g
Accura 2750IO-DI2/DO2/RTD2	48.0W x 103.0H x 114.5D	280 g
Unit-Socket	52 g	33.8W x 83.4H x 28.0D
Bridge-Socket	52 g	33.8W x 83.4H x 28.0D

1. Short interruptions

Quick Installation Guide

Quick Setup Guide

Quick Installation Guide

Quick Setup Guide