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Accura 2700M Integrated Incoming-Unit Module

Mounted at the MCC incoming-unit, Accura 2700M performs the main function of the Smart Motor Management System. It measures the power consumed at the entire MCC by sensing the voltage/current of the incoming line and the power of the individual motor-unit by sending the sampled voltage data to all Accura 2750P[C] modules connected with the internal communication cable. Through the cable, it delivers/receives measurement and motor control commands and operating status data to/from multiple Accura 2750P[C] modules at the MCC. It also sends/receives those data to/from multiple Accura 2750LC[I] modules at the LOP(Local Operating Panel) through Accura 2750LCG. By sending this data to Accura 2700D, the integrated incoming-unit HMI module, it allows users to check the operation state of all motors in front of the MCC panel. It is connected to the host system through Ethernet and RS-485 communication.

Connection with Accura 2750P[C]
Transmits voltage data of the incoming line to multiple Accura 2750P[C] modules.
Collects the measurement and operational data of each motor-unit from multiple Accura 2750P[C] modules.
Internal dedicated protocol	2 ports with the same functions(UNIT1, UNIT2)
Two ports: ring connection	Communication Redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Number of connected Accura 2750P[C] modules	Maximum 30(ring connection)
Communication cable length	Between Unit-Sockets	Average 3m¹
	Total ring network length	Maximum 120m
	Between unit-socket and Accura 2750P[C]	Maximum 3m
Power Measurement of MCC Incoming Line
Measures and analyzes the characteristics of the power consumed at the entire MCC by sensing voltage/current of the incoming line
Measurement Parameter
Voltage	Line-to-neutral voltage(each phase/average, maximum), Line-to-line voltage(each line-to-line/average, maximum)
	Fundamental voltage(each phase/average)
	Harmonics(each phase, up to the 50th order), THD(each 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 (each phase/average, maximum), Fundamental (each phase/average)
	Harmonics (each phase, up to the 50th order), THD (each phase, maximum), TDD (each phase, maximum)
	Vector diagram(phasor diagram)
	Symmetrical components(positive, negative, zero, maximum), unbalance(IEC, NEMA, maximum)
	Demand current(phase/average), Peak demand current(phase/average)
	Crest Factor(each phase, maximum), K-factor(each phase, maximum)
Power	Active, Reactive, Apparent(each phase/ total, maximum)
	Demand active power(each phase/total), Peak demand active power(each phase/total)
Power factor	Each phase, total
Active energy	Total value of three phases(Received, Delivered, Sum, Net)
Reactive energy	Total value of three phases(Positive, Negative, Sum, Net)
Apparent energy	Total value of three phases
External Communication with Host System
Ethernet Communication	100 Base-TX(100 Mbps/Full Duplex), Modbus TCP protocol Accura 2700M device Redundancy	2 ports with the same functions(ETHERNET1, ETHERNET2)
	Two ports: Ethernet switching, RSTP	Communication redundancy via ring connection
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable wiring method	Star, Daisy-chain, Ring connection
RS-485 Communication	1,200 – 115,200 bps¹, Modbus RTU protocol	1 port (Ta, Tb)
	Connector type	Screw-type terminal(pluggable)
	Communication cable	UL 2919 RS-485 1P[2P] 24 AWG
Connection with Accura 2700D
Communication with the HMI module	100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol	1 port(DISPLAY A2700D)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP(F/UTP)
	Communication cable length	3 m (It comes with Accura 2700D.)
	Power supply through the Ethernet communication cable
Connection with Accura 2750LCG
Communication with the LOP control module	Internal dedicated protocol	2 ports with the same functions(A2750LCG-1, A2750LCG-2)
	2 ports	Accura 2750LCG device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable length	Maximum 300 m
Control Power
Rating 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. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.
2. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master and the slave is 600 m.

Accura 2700D Integrated Incoming-Unit HMI Module

Accura 2700D is mounted at the front of the MCC incoming-unit and is connected to Accura 2700M with the Ethernet cable. Through communication, it provides information of Accura 2700M as well as measurement, control and operational status data on multiple Accura 2750P[C] and Accura 2750LC[I] modules collected by Accura 2700M on the TFT Color LCD screen at the front. All functions of Accura 2700M, Accura 2750P[C], and Accura 2750LC[I] can be set up on the TFT Color LCD touch panel screen. Accura 2700D supports redundancy of Accura 2700M modules by connecting to two Accura 2700M modules simultaneously using its two built-in communication ports.

Connection to Accura 2700M
Displays the information of Accura 2700M, multiple Accura 2750P[C] and Accura 2750LC[I] modules collected by Accura 2700M through 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 through communication
100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol			2 ports with the same functions (DISPLAY1, DISPLAY2)
2 ports			Accura 2700M device redundancy
Connector type			RJ45 connector
Communication cable			Ethernet cable Cat 5e FTP(F/UTP)
Cable length			3 m (It comes with Accura 2700D.)
Display
Display Size			8.5”(184.8 x 110.88 mm)
VGA transmissive color TFT(LED backlight & touch panel)
Power supply
Power supply input			Supplied from Accura 2700M through the communication cable

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

Installed at the individual motor unit in the MCC, Accura 2750P mainly protects the motor by measuring the current supplied to the motor. It also measures the various power characteristics of the individual motor-unit based on the current signal data measured by the built-in CT and the voltage signal data received from Accura 2700M via communication. For a motor-unit driven by an inverter, it measures the various power characteristics of the individual motor unit by receiving the sampled output voltage data of the inverter processed with the Low Pass Filter(LPF) from Accura 2750INV/VOL module via communication. Accura 2750PC provides the motor control function along with the measurement and protection function of Accura 2750P.

Connection with Accura 2700M through Unit-Socket
Receives the voltage data of the incoming line from Accura 2700M.
Transmits the measurement and operating status data of the corresponding motor-unit to Accura 2700M.
Internal dedicated protocol	1 port(UNIT-SOCKET)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 3m
Power Measurement of Motor-Unit Branch Line
Measures and analyzes various power characteristics based on the voltage data received from Accura 2700M and the current data of the motor-unit branch line.
Measures and analyzes the various power characteristics of the motor-unit branch line based on the inverter output voltage data received from Accura 2750INV/VOL module.

Measurement Parameter
Current	RMS(each phase/average, Maximum phase/average), Fundamental(each phase/average)
	Harmonics (each phase, 1st – 31st order), THD (each phase, maximum), TDD (each phase, maximum)
	Vector diagram(phasor diagram)
	Symmetrical components(positive, negative, zero, maximum), unbalance(IEC, NEMA, maximum)
	Maximum starting current (each phase/average), Maximum running current(each phase/average)
	Demand(each phase/average), Peak demand(each phase/average)
	Crest Factor(each phase, maximum), K-factor(each phase, maximum)
Ground current¹	Ground(RMS value measured by the built-in ZCT)(instantaneous, maximum)
	Residual ground(RMS value measured by summing up three phase current)(instantaneous, maximum)
Power	Active, Reactive, Apparent(each phase/total, maximum)
	Demand, Peak demand(each phase/total)
Power factor	Each phase, total
Active energy	Total value of three phases(Received, Delivered, Sum, Net)
Reactive energy	Total value of three phases(Positive, Negative, Sum, Net)
Apparent energy	Total value of three phases
Protection Relay of Motor
Measures current and analyzes current data for protection of the individual motor powered by the motor-unit.
Protection Item
Thermal protection	THR(49)
Overcurrent protection	Time Over Current(50TD), JAM(50LR-TD), Long Start Relay(48), Instantaneous Over Current(50) Long Time Over Current(50LTD)
Current unbalance protection	Unbalance(46), Phase out current relay(46), Phase sequence relay(46)
Undercurrent protection	Undercurrent(37)
Ground current protection	Built-in ZCT(64), Sum of 3 phase current(50G-TD)
Magnetic contactor	Magnetic contactor supervision
Motor Control Function(Supported only in Accura 2750PC)
Start and stop control of single/three-phase motor and monitoring of operation status
Motor control functions are available by default. However, you can use "Accura Logic" to meet your specific needs.

Starter Mode
Overload relay	Only performs the protection Relay as Accura 2750P
Direct starter	Starts/stop control of motor in one direction
Reversing starter	Starts/stop control of motor in both forward and reverse directions
2-speed starter	Changes the polarity of the motor for speed control
2-step starter	Changes the wiring method while starting the motor to reduce its starting current
Connection to Motor-unit HMI Module Accura 2750D[C]²
Internal protocol	1 port(DISPLAY)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	2 m (It comes with Accura 2700D[C].)
Temperature Measurement
Number of the temperature measurement sensor on Accura 2750P[C]	1
Digital Input/Output(DIO)
Digital input	Accura 2750P	1 channel (external power input)
	Accura 2750PC	10 channels (external power input)
Digital output	Accura 2750P	Form-A 2 channels, Form-C 1 channel
	Accura 2750PC	Form-A 3 channels, Form-C 1 channel
Control Power Supply
Rating 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 and Accura 2750PC-ACB models, the measurement accuracy of ground current and residual
ground current is not ensured due to the error of external CTs in the wiring mode with 3 external CTs, and the ground current and residual ground
current are not measured in the wiring mode with 2 external CTs.
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 2750PC-ACB module is to trip the ACB by measuring the secondary current of the built-in CT in the ACB unit and operating protection relays. The Instantaneous Over Current Relay operates quickly 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. It is possible to select the Fault or MHT signal when performing the mapping of the digital output. It also measures various power characterisctics of the ACB unit based on the measured current data and the sampled voltage data recieved from Accura 2700M via communication. General specifications for the measurements and protection relays of Accura 2750PC-ACB module are the same as those of Accura 2750PC motor-unit protection[control] module. The features of Accura 2750PC-ACB module are as follows.

ACB-Unit Protection and Power Measurements
Operates the protection relay by measuring the secondary current of the CT installed in the ACB unit
Measures and analyzes various power characteristics based on 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 2750PC module
ACB Protection²
Base current setup	FLC setup
Time Over Current Relay	The relay operation mode can be configured during the motor starting interval.
Instantaneous Over Current Relay	The relay operates quickly when a large current flows. - It operates within 16 ms when the measured current value is 120 % of the set threshold. - It operates within 8 ms when the measured current value is 200 % of the set threshold.
Long Time Over Current Relay	The relay operates based on the inverse-time characteristic curve (cold curve of the THR).
Ground Fault Relay (ZCT)	The relay operates based on the values measured by the built-in ZCT of Accura 2750PC–ACB module¹
Digital Input/Output
Digital input	10 channels (external excitation)
	Externa excitation: AC 220 V or AC/DC 110 V can be selected when ordering the product.
Digital output	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 provided as the value converted into the primary current of the CT,
which includes the measurement error of the external CT.
2. When using external CTs with the module,the set current value is based on the module's input current value.

Terminal Block

As the rated current of the motor gets higher, a larger-diameter power cable should be used. You can install Accura 2750PC-160A/250A/400A models with high current ratings, using the terminal block (separately provided) or the through-hole busbar.
Easy Installation of Accura 2750PC-160A/250A, Accura 2750PC-400A
It is possible to install the terminal block on the load side or both sides without the need for a large-diameter power cable to directly penetrate the module.
Saves space when the MCCB of the motor-unit and the through-hole busbar are connected directly.
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 output voltage signal of the inverter is required to measure the inverter's output power in the motor-unit driven by the inverter. Accura 2750INV/VOL module processes the inverter output voltage with the Low Pass Filter(LPF) to generate voltage data and transmits it to Accura 2750PC module via communication. It also supports a separate RS-485 communication port to communicate with the inverter supporting RS-485 communication. By providing additional digital I/O channels, Accura 2750INV module allows for an easy-to-use, hardwired interface in connection with the inverter.

Output Voltage Measurement of the Inverter-unit
Provides voltage data by processing the inverter output voltage with the Low Pass Filter(LPF)
Frequency measurement range	5 - 180 Hz
Cut-off frequency of LPF	188 Hz
Connection with Accura 2750P[C]
Transmits the voltage data of the inverter-unit to Accura 2750P[C] via internal communication
Internal dedicated protocol	1 port (A2750PC)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat.5e FTP(F/UTP)
Communication cable length	3 m (It comes with Accura 2750INV/VOL.)
Connection with Motor-Unit HMI Module Accura 2750DCI
Internal dedicated protocol	1 port (DISPLAY A2750DCI)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat.5e FTP(F/UTP)
Communication cable length	2 m (It comes with Accura 2750DCI.)
Connection with 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	UL2919 RS-485 1P[2P] 24AWG
Digital Input/Output
Digital input	Accura 2750INV	5 channels (external excitation)
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 at the front of individual motor units, Accura 2750D[C/CI] is connected to Accura 2750P[C] using an Ethernet cable. When measuring the output power of the inverter in the inverter unit, Accura 2750INV/VOL module is installed to measure the inverter output voltage. Accura 2750DCI is connected to Accura 2750INV/VOL, and Accura 2750INV/VOL is connected to Accura 2750PC, respectively, using Ethernet cables. Accura 2750D[C/CI] module collects information on the measurement, protection and operational status of Accura 2750P[C] and Accura 2750LC[I] of the motor-unit via internal communication and provides various information for users 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. In addition to Accura 2750D's features, Accura 2750DC provides the RUN and STOP buttons on the front for motor start/stop controls. Along with the functions of Accura 2750DC,Accura 2750DCI provides the INVERTER/BYPASS and AUTO/MANUAL buttons on the front panel for the operation of the inverter.

Connection with Accura 2750P[C]¹
Collects information of Accura 2750P[C] and Accura 2750LC[I] through internal dedicated communication and provides various information for users through the LCD screen on the front side.
Configures all functions of Accura 2750P[C] and some functions of Accura 2750LC[I].
Internal dedicated protocol	2 ports with the same functions(DISPLAY1, DISPLAY2)
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP(F/UTP)
Communication cable length	2 m (It comes with Accura 27500D[C/CI].)
Power supplied from Accura 2750P[C] through communication cable
Display Specifications
2.7” Graphic 80x128 Dots(40.0 x 58.0mm) FSTN LCD
Front Buttons
4 muti-function buttons for changing directions(short-press)/ performing special functions (long-press)	Left(<)/ESC, Up(^)/SETUP, Down(∨)/EVENT, Right(>)/ENTER
1 Test/Fault reset button	TEST/RESET
3 Run/Stop of motor	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 input	Supplied from Accura 2750P[C]

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

Accura 2750LCG LOP Control Gateway

Accura 2750LCG performs two-way data transmission between Accura 2700M and Accura 2750LC[I]. Accura 2750LCG supports two ports to communicate with two Accura 2700M modules for redundancy. Accura 2750LCG supports two networks(2 ports per group) for communication with Accura 2750LC[I]. It supports communication redundancy via ring connection of Accura 2750LC[I] using 2 ports in a single group. Up to 15 Accura 2750LC[I] modules can be connected in a single ring connection, and up to 30 modules can be connected in two ring connections. Accura 2750LCG supplies 24V DC power to Accura 2750LC[I] through the communication cable. Due to the limit on the power supply of Accura 2750LCG, when the number of Accura 2750LC[I] modules exceeds 10 per network group, one Accura 2750LC POW module should be additionally connected to the rear of Accura 2750LC[I] to operate up to 15 modules per group.

Connection with Accura 2700M
Internal dedicated protocol	2 ports with the same functions(A2700M-1, A2700M-2)
2 ports: Connects 2 Accura 2700M modules	Accura 2700M device redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable length	Maximum 300 m for each port
Connection with Accura 2750LC[I]
Internal dedicated protocol	4 ports with the same 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 within a group: Ring connection	Communication redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable total length	Maximum 800 m per group
Power supply via the communication cable	24 V DC / 50 W power supply
Maximum number of connected Accura 2750LC[I] modules	15 per group(ring connection), 30 for 2 groups
Control Power Supply
Rating voltage(Us)	110—240 V AC 50/60 Hz, 110—300 V DC
Operating voltage range	0.8 x Us-1.1 x Us
Rating 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) that substitutes the existing LOPs consisting of the push button, lamp, selection switch, and current meter. Accura 2750LC performs motor control commands at the field and displays the operational status and measurement data on the motor via communication with Accura 2700M through Accura 2750LCG. Along with the functions of Accura 2750LC, Accura 2750LCI provides the INVERTER/BYPASS buttons on the front panel for the operation of the inverter. In the existing LOPs, once the RUN/STOP command is executed by pressing the push button, it is sent to Accura 2750PC through the signal cable connected with the contact point of the push button and the digital input of the corresponding Accura 2750PC. However, when pressing the RUN/STOP button on Accura 2750LC[I], the control command is sent to Accura 2700M through Accura 2750LCG. Accura 2700M performs the RUN/STOP command by sending the command to Accura 2750PC of the corresponding motor unit through communication. This communication method is beneficial since a single communication cable replaces multiple signal cables connecting the MCC to the LOP at the existing system. It allows users to easily identify the disconnection and short-circuit state of the cable. Accura 2750LCG supports communication redundancy through a ring connection using the two communication ports on Accura 2750LC[I].

Connection with Accura 2750LCG
Accura 2750LCG performs the gateway function between Accura 2700M and Accura 2750LC[I].
The command of the corresponding motor-unit at the LOP is transmitted to Accura 2750PC through Accura 2750LCG and Accura 2700M.
Current, power, and operational status data on the corresponding motor-unit are transmitted from Accura 2750PC toAccura 2750LC[I] through Accura 2700M and Accura 2750LCG
Internal dedicated protocol	2 ports with the same functions(LC/LM-A, LC/LM-B)
2 ports: ring connection	Communication redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Communication cable total length	Maximum 800 m for each network
Communication cable power supply	24 V DC supplied from Accura 2750LCG
Maximum number of connected Accura 2750LC[I] modules	15 per group (ring connection)
	(The POW module is additionally connected when the number of connected Accura 2750LC[I] modules exceeds 10.)
Motor Control Function
Transmits the motor start/stop control command and monitors the operational status of the motor at the field
Optional Module: LC Power Module (Accura 2750LC POW)
POW module can be added to the rear of Accura 2750LC[I] module.
LC power module (Accura 2750LC POW)	Rating voltage(Us)	110-240 V AC 50/60 Hz, 110-300 V DC
	Operating voltage range	0.8 x Us-1.1 x Us
	Rating output voltage/power	24 V DC / 20 W
Power Supply
Power for Accura 2750LC[I] is primarily supplied from Accura 2750LCG through the communication cable.
Power supply through	Accura 2750LCG: 24 V DC(Can supply power to 10 Accura 2750LC modules per group)
Additional power supply through LC power module	Accura 2750LC POW module: 24 V DC(Can supply power to 10 Accura 2750LC[I] modules)

Unit-Socket

One Accura 2700M module and multiple Accura 2750P[C] modules are connected through communication. The Category 5e FTP, STP, or SFTP Ethernet cable is used for high reliability and convenience. Accura 2700M should be connected to Accura 2750P[C] modules of individual motor units with the daisy-chain method. However, the Unit-Socket is provided for convenience in installing communication cables and withdrawing motor units. A single Ethernet cable is also used to connect the Unit-Socket and Accura 2750P[C]. It makes it easy to disconnect the communication line when withdrawing motor units.

Easy Connection of Internal Communication Cables
As Accura 2750P[C] modules are connected through the Unit-Socket with communication cables, it is easy to disconnect the cables when withdrawing a motor unit with Accura 2750P[C]. Even if the cable is disconnected, it does not affect communication of other motor units
Removes T-stub connections through the input/output structure of the communication cable
Communication Port
Number of ports	3 ports(RJ45A, A2750, RJ45B) (The RJ45A and RJ45B ports have the same 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.

Redundancy
As two Accura 2700M modules share Accura 2750P[C]’s network, it allows for redundancy of Accura 2700M modules.
As two Accura 2750LCG modules share Accura 2750LC[I]’s network, it allows for redundancy of Accura 2750LCG modules.
Communication Port
Number of ports	3 ports(CH_A, COM, CH_B)
	(The CH_A and CH_B ports have the same functions)
Connector type	RJ45 connector

Accura 2700M Integrated Incoming-Unit Module

Power Supply
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal(pluggable)
Wire specifications	2.1 — 3.5 mm² (14 — 12 AWG)
Rating voltage(Us)	110 — 240 V AC 50/60 Hz, 110 — 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rating consumption power	Maximum 17 VA(AC 220 V, 25°C) in connection with Accura 2700D with the charged super capacitor
Rating insulation voltage(Ui)	300 V (at pollution degree 2)
Rating impulse withstand voltage(Uimp)	4 kV
Inrush current	Peak 31 A, under duration 1msec (AC 220 V)
	Peak 11 A, under duration 200usec (DC 110 V)
External input fuse capacity	2 A, 500 V
Accepted instantaneous power outage time	Minimum 10 seconds(built-in super capacitor)
Voltage Input
Connector name	V1, V2, V3, VN
Connector type	Terminal block M4
Wire specifications	2.1 — 5.0 mm² (14 — 10 AWG)
Measuring range (Accuracy guaranteed)	AC 65 - 300 V direct L-N ( line-to-neutral voltage)	Accuracy IEC 61557-12 Class 0.5
	AC 110 — 520 V direct L-L ( line-to-line voltage)
Minimum measured value	AC 5V direct L-N (line-to-neutral voltage)
Rated voltage	520 V
Rated insulation voltage(Ui)	520V (Overvoltage category III, pollution degree 2)
Rated impulse voltage(Uimp)	8 kV
Frequency measurement	42 — 69 Hz
Impedance	6 MΩ(L-N: V1/V2/V3-Vn)
Burden	0.01 VA/Phase @220 V
Current Input
Connector name	I1, I2, I3, IN
Connector type	Terminal block M4 (Internal Busbar)
Wire specifications	2.1 — 5.0 mm² (14 — 10 AWG)
Rated current	5 A @ CT 5A
	1 A @ CT 1A
Maximum input current	10 A @ CT 5A (twice the rated current)
	2 A @ CT 1A (twice the rated current)
Measuring range (Accuracy guaranteed)	50 mA – 10 A @ CT 5A	Accuracy IEC 61557-12 Class 0.2
	50 mA – 2 A @ CT 1A
Minimum measured value	20 mA @ CT 5 A (The minimum settable value is 5 mA.)
	5 mA @ CT 1 A (The minimum settable value is 5 mA.)
Sampling	256 samples/cycle
Amount of overcurrent	1,000 % of rated current, for 1 second	200 % of rated current, continuous
Burden	Maximum 0.01 VA/phase @ 10 A
Communication with the Host System
Ethernet communication	100 Base-TX(100 Mbps/Full Duplex)	2 ports(ETHERNET1, ETHERNET2) (Function of each ports are same)
	Modbus TCP Protocol
	Accura 2700M device redundancy supported
	2ports: Ethernet switching¹, RSTP²	Support for communication redundancy by ring setup
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP ³
	Communication cable length	Maximum 100m
	Communication cable connection method	Star, Daisy-chain, Ring
	Max. number of connected devices(Daisy-chain)	20
RS-485 communication	1,200 - 115,200 bps, Modbus RTU Protocol	1 port(Ta, Tb)
	Connector type	Screw-type terminal(pluggable)
	Communication cable	UL 2919 RS-485 1P[2P] 24AWG
	Communication cable length	Maximum 1,219 m(4,000 ft)
	Maximum connecting device	32 per Bus⁴
Connection with Modules
Connection with Accura 2700D, the HMI module	100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol	1 port(DISPLAY A2700D)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP(F/UTP)⁵
	Communication cable length	3 m
	Power supply via the communication cable
Connection with Accura 2750P[C] the motor protection[control] module through the Unit-Socket	Internal dedicated protocol	2 ports with the same functions (UNIT1, UNIT2)
	2 ports: UNIT1 / UNIT2 ring connection	Support for communication redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP³
	Number of connected Accura 2750P[C] modules	Maximum 30(ring connection)
	Cable length between Accura 2700M and Unit-Socket or between Unit-Sockets	Average 3m⁶
	Total cable length in ring connection	Maximum 120 m
	Cable length between unit-socket and Accura 2750P[C]	Maximum 3 m
Connection with Accura 2750LCG	Internal dedicated protocol	2 ports with the same functions(A2750LCG-1, A2750LCG-2)
	2 ports used to connect 2 Accura 2750LCG modules	Support for Accura 2750LCG device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP, STP, SFTP³
	Communication cable length	Maximum 300 m per port
Management Function
Management of Accura 2750P[C]	Maximum number of connectable modules in a ring connection: 30 units
	Management function	Performs the server function of the MCC for the host system's requests
		Automatic Unit ID assignment, automatic recognition of the withdrawal and insertion of the motor-unit
		Transmits the Incoming-unit voltage data
		Collects the measurement and operational status data of each module
		Provides module setup information via Accura 2700D and communication
		Sends the DO control commands of the module
		Transmits Accura 2750PC's control logic data through communication
		Supports the re-insertion of Accura 2750PC after power outage/recovery
Management of Accura 2750LC[I]	Maximum number of modules connected through Accura 2750LCG: 30 units (15 units per ring connection, support for 2 ring connections)
	Management function	Transmits the current, power and operational status data of the motor-unit
		Transmits the control commands of the motor-unit
Event	Monitoring Item	Voltage dip/swell

1. The built-in Ethernet switch allows Ethernet connection between Accura 2700M modules without a separate external 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, and the maximum distance between the master and the slave is 600 m.
5. It is provided with the product. FTP(F/UTP): Foiled Shield Twisted Pair
6. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.

Accura 2700D Integrated Incoming-Unit HMI Module

Power Supply
power supply input	Supplied from Accura 2700M through the communication cable
LCD
LCD properties	8.5”(184.8 x 110.88 mm) VGA Transmissive Color TFT
	LED Backlight & Touch Panel
LED
Number of front LED	6
	EVENT	Orange	Turned On when a Caution event occurs in the module(can be set to blink)
	ALARM	Orange	Turned On when an Alarm event occurs in the module(can be set to blink)
	FAULT	Red	Turned On when a Fault event occurs in the module(can be set to blink)
	ETHERNET	Green	Blinks when communicating with the host system via Ethernet connection(can be set to On)
	RS-485	Green	Blinks when communicating with the host system via the RS-485 network(can be set to On)
	COMM	Green	Blinks when Accura 2700M communicates with Accura 2750P[C](can be set to On)
Button
Number of front buttons	4(Specific functions are performed by tapping on the LCD screen)
	HOME	Used to navigate to the HOME TOP screen or measurement screen of the unit
	SETUP	Used to navigate to the SETUP TOP screen or setup screen of the unit
	EVENT	Used to navigate to the EVENT TOP screen or event screen of the unit
	BACK	Used to navigate to the previous screen

USB
	High Speed USB 2.0 OTG (Host/Device)	Micro USB port
Connection with Module
Connection with Accura 2700M	100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol	2 ports with the same functions(DISPLAY1, DISPLAY2)
	2 communication ports	Support for Accura 2700M device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP(F/UTP)¹
	Communication cable length	3 m
	Power supply through the communication cable

1. It is provided with the product. FTP(F/UTP): Foiled Shield Twisted Pair

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

Power supply
Power supply input	Supplied from Accura 2750P[C] via the communication cable
LCD
LCD features	2.7” Graphic 80x128 Dots(40.0 x 58.0mm) FSTN LCD, LED Backlight
LED
Module operating state LED	EVENT	Orange	Turned 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 be turned on)
	ALARM	Orange	Turned On when an Alarm event occurs (can be set to blink)
	FAULT¹	Red	Turned On when a Fault event occurs (can be set to blink)
	MCCB TRIP²	Red	Turned On when the MCCB Trip status of the motor-unit is entered (can be set to blink)
Motor operating state LED	RUN1	Red	Turned On when the motor rotates in normal direction or speed 1 is selected as the operation mode
	RUN2	Red	Turned On when the motor rotates in reverse direction or speed 2 is selected as the operation mode
	STOP	Green	Turned On when the motor is stopped
Selected control mode LED (Accura 2750DC[I] only)	LO	Green	Turned On when Local is selected as the control mode
	RE	Orange	Turned On when Remote is selected as the control mode
Inverter operation mode LED (Accura 2750DCI only)	INV	Green	Turned On when inverter mode is selected as motor-unit operation mode
	BPS	Orange	Turned On when bypass mode is selected as motor-unit operation mode
	AUTO	Green	Turned On when AUTO is selected as inverter operation mode
	MANU	Orange	Turned On when MANUAL is selected as inverter operation mode
Button
Buttons for changing directions and performing special functions	4 multi-function buttons for changing directions(short press) and performing special functions(long press)
	Left(<)/ESC		Used to navigate to the left and perform the ESC function
	Up(^)/SETUP		Used to navigate upwards and enter SETUP mode
	Down(∨)/EVENT		Used to navigate downwards and enter EVENT mode
	Right(>)/ENTER		Used to navigate to the right and perform the ENTER function
Test / Reset multi-function buttons	TEST		Generates current data in Accura 2750P[C] ,Performs the measurement/ protection function and DIO test(The function operates when no event occurs)
	RESET		Event reset on the motor-unit(The function operates when an event occurs)
Motor control button (Accura 2750DC[I] only)	RUN1		Run command of normal direction and speed 1 mode
	RUN2		Run command of reverse direction and speed 2 mode
	STOP		Stop command
Control mode button (Accura 2750DC[I] only)	LOCAL		Selects Local as the MCC control model
	REMOTE		Selects Remote as the MCC control mode
Inverter operation mode button (Accura 2750DCI Only)	INVERTER		Motor driven by the inverter(inverter mode)
	BYPASS		Motor operation without using the inverter(bypass mode)
	AUTO		Operates at variable frequency in inverter mode
	MANUAL		Operates at fixed frequency in inverter mode
Connection with Module
Communication with Accura 2750P[C]	Internal dedicated protocol		2 ports with the same functions(DISPLAY1, DISPLAY2)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat 5e FTP(F/UTP)³
	Communication cable length		2 m
	Power supplied from Accura 2750P[C]

1. Accura 2750DCI module provides two separate INVERTER/BYPASS LEDs, as well as separate LEDs that indicate the MCCB Trip status.
2. It is available only in Accura 2750DCI module, and two separate INVERTER/BYPASS LEDs indicate the MCCB Trip status.
3. It is provided with the product. FTP(F/UTP): Foiled Shielded Twisted Pairs

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

Power Supply
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal(Pluggable)
Wire specifications	2.1 — 3.5 mm² (14 — 12 AWG)
Rating voltage(Us)	110 — 240 V AC 50/60 Hz, 110 — 300 V DC
Operating voltage range	0.8 x Us — 1.1 x Us
Rating consumption power	Maximum 13 VA(AC 220 V, 25°C) @Super Capacitor charging and full digital output operating
Rating insulation voltage(Ui)	300 V(at pollution degree 2)
Rating impulse withstand voltage(Uimp)	4 kV
Inrush current	Peak 40 A, Under duration 400 usec (AC 220 V)
	Peak 18 A, Under duration 200 usec (DC 110 V)
Input external fuse capacity	2 A, 500 V
Accepted instantaneous power outage time	Minimum 10 seconds(built-in super capacitor)
Voltage Input
Voltage input	Receives voltage data from Accura 2700M through communication
	Receives the inverter output voltage data from Accura 2750INV/VOL through communication for the motor-unit driven by the inverter
Current Input
Connector type	Through-hole type
Sampling	64 samples/ cycle
Outer hole diameter	Accura 2750P[C]-5A/30A	Ø12 mm
	Accura 2750P[C]-100A	Ø19 mm
	Accura 2750PC-160A/250A	Ø25 mm
	Accura 2750PC-400A	Ø30 mm
Rated current	Accura 2750P[C]-5A	5 A
	Accura 2750P[C]-30A	30 A
	Accura 2750P[C]-100A	100 A
	Accura 2750PC-160A	160 A
	Accura 2750PC-250A	250 A
	Accura 2750PC-400A	400 A
Motor FLC Setup Range	Accura 2750P[C]-5A	0.50 — 5 A
	Accura 2750P[C]-30A	3.0 — 30 A
	Accura 2750P[C]-100A	10.0 — 100 A
	Accura 2750PC-160A	16.0 — 160.0 A
	Accura 2750PC-250A	25.0 — 250.0 A
	Accura 2750PC-400A	40.0 — 400.0 A
Digital Input
Number of channels	Accura 2750P	1 channel(external excitation)
	Accura 2750PC	10 channels(external excitation)
Connector type	Screw-type terminal(pluggable)
Wire specification	0.21 — 3.5 mm² (24 — 12AWG)
Insulation method	Insulated between groups, uninsulated within a group
	Group 1: channel 1-5 (1DI₁- 1DI₅) 1DI_G common
	Group 2: channel 6-10 (2DI₆- 2DI₁₀) 2DI_G common
Minimum pulse width	50 msec
Input type	External excitation
External Power Supply Options	AC220 V	AC/DC110 V	Note
Input Impedance	66 kΩ	Not applicable	for Accura 2750P¹
	405 kΩ	225 kΩ	for Accura 2750PC
Low voltage range	0 — 140 Vac	0 — 55 Vac/Vdc	-
High voltage range	165 — 240 Vac	78 — 130 Vac/Vdc	-
Digital Output
Number of channels / Output form	Accura 2750P	3 channels(Form-A 2 channels, Form-C 1 channel)
	Accura 2750PC	4 channels(Form-A 3 channels, Form-C 1 channel)
Connector type	Screw-type terminal(pluggable)
Wire specification	1.5 — 3.5 mm²(16 — 12AWG)
Insulation	AC 2,000 V/for 1 minute.
Output rating	Form-A: 5 A/250 Vac, 5A/30 Vdc(DO1 – DO3)
	Form-C: 3 A/250 Vac, 3A/30 Vdc(DO4)
LCD
LCD features	1.2”(24.5 x 21.0mm) Customized Mono LCD, LED Backlight
Connection with Module
RS-485 communication with motor protection[control] module using Unit-Socket	Internal dedicated protocol	1port(UNIT-SOCKET)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP, STP, SFTP¹
	Communication cable length	Maximum 3 m
RS-485 communication with Accura 2750D[C] HMI module	Internal dedicated protocol	1 port(DISPLAY)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP(F/UTP)²
	Communication cable length	2 m
Temperature Measurement⁴
Temperature measurement range	-20 – 100°C
Accuracy	±2% Full Scale (Full Scale: 100°C)

Motor Protection Relay
Thermal Relay (THR)	IEC 60255-149
Overcurrent Relay (OCR)	Definite time
Phase Out Current Relay(POCR)	Instantaneous characteristic(in 200ms)
Phase Sequence Relay (PSR)	Definite time
Unbalance Current Relay (UBCR)	Definite time
Long Start Relay (LSR)	Definite time
Jam Relay (JAM)	Definite time
Ground current fault Relay (GR) by ZCT Current	Definite time
Residual Ground current fault Relay (GR) by sum of 3-phase current	Definite time
Under Current Relay (UCR)	Definite time
Instantaneous Over Current Relay(I.OCR)	Instantaneous or Definite time
Magnetic Contactor Supervision(MCS)	Definite time
Long Time Over Current Relay(LT.OCR)	Long time

Control Function (only supported in Accura 2750PC)
Motor start/stop	Overload Protection(Overload Relay): The start/stop function unavailable
	Direct Starter
	Reversing Starter
	2-Speed starter
	2-Step starter
Auto restart	Power outage/ Power Recovery	Power outage occurring in the control module of the motor-unit for control power supply⁵
		Power outage occurring in the incoming-unit for measured voltage
	Outage for the control power on the motor-unit	Power outage threshold	AC 140 V
		Power recovery threshold	AC 165 V
	Outage for voltage measured on the Incoming-unit	Power outage threshold	40% of reference voltage
		Power recovery threshold	60% of reference voltage
	Auto-restart Enable Time	0.1 — 2.0 sec
	Auto-restart Disable Time	0.1 — 10.0 sec
	Auto-restart Delay	1 — 600 sec
Management Function
Motor management	Operating state	Checks the operating state of the motor by analyzing the change in current values(start, run, stop)
	Preventive maintenance	Change in the magnitude of the starting current, Change in the starting time
		Accumulated Run/Stop time
	Diagnoses the motor through data such as the number of starts and the average load ratio
Event⁶	Monitoring item	Operation state of each protection relay function
		Start inhibit
		Change in DO state
		Change in DI state(can be used for the status input of CB or MC)
		Redundancy error
		Control command error check
		Operation limit
		Self-diagnosis
		Auto restart

1. Accura 2750P only supports AC 220 V as the input voltage of an external power supply.
2. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
3. It is provided with the product. FTP(F/UTP): Foiled Shielded Twisted Pairs
4. It is not for fire monitoring, but for reference only.
5. Connect the power supply to the DI port and set it to "Control Power Monitoring" in the corresponding DI input setting.
6. Events are divided into Fault, Alarm, Caution, and General events according to their importance.
Fault, Alarm, and Caution events support the notification function.

Accura 2750PC-ACB Protection & Control Module

Power Supply	Same as that of Accura 2750PC
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	Max. Measured Current
	Ø12 mm	5 A	0.50 — 5 A	240 A
Digital Input	Same as that of Accura 2750PC
Number of channels	10 channels (external excitation)
Input type	External excitation
External Power Supply Options	AC220V		AC/DC110V
Input Impedance	405 kΩ		225 kΩ
Low voltage range	0 — 140 Vac		0 — 55 Vac/Vdc
High voltage range	165 — 240 Vac		78 — 130 Vac/Vdc
Digital Output	Same as that of Accura 2750PC
Number of channels/output type	4 channels (3 Form-A channels, 1 Form-C channel)
Output rating¹	Form–A: AC–15 5A/250Vac, DC–13 5A/30Vdc (DO1 – DO3)
	Form–C: AC–15 3A/250Vac, DC–13 3A/30Vdc (DO4)
Measurement Parameters²	Same as those of Accura 2750PC
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
	Primary current range of the CT		1.0 — 9,999.9 A (default: 5.0 A)
	Secondary current range of the CT		1.0 — 5.0 A (default: 5.0 A)
ACB Protection Relay³
ACB Trip signals⁴	Fault signal		Latch cleared by fault reset
	MHT signal		Pulse with a pulse width of 12 ms
Over Current Relay (OCR)	Trip characteristics		Definite time when outputting alarm signals
			Inverse time and definite time when outputting fault signals
	Operating condition		While the motor is starting and running(starting interval selectable)
	Input		RMS current value 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 sec
	Fault TMS		0.05 — 10.00
	Alarm Threshold		90 — 1000 % FLC
	Alarm Time Delay		0.05 — 99.99 sec
	Startup Blocking		Disable/Enable
	Accuracy		Operation threshold: ±5 % operation time: a greater value out of±5 % or ±35 ms
Instantaneous Over Current Relay (I.OCR)	Trip characteristics		Instantaneous
	Operating condition		While the motor is starting and running
	Input		RMS current value for each phase
	Fault Threshold⁵		200 — 1600 % FLC
	Accuracy		Operation threshold: ±5 %
			Operation time:–It operates within 16 ms when the measured current value is 120 % of the set threshold. –It operates within 8 ms when the measured current value is 200 % of the set threshold
Over Current Relay (OCR)	Trip characteristics		Inverse time
	Operating condition		While the motor is starting and running
	Input		RMS current value for each phase
	Fault Threshold		80 — 110 % FLC
	Fault Time Delay		0.5 — 30.0 sec
	Accuracy		Operation time: a greater value out of ±5 % or ±35 ms

1. Check the rating and characteristics of the shunt trip coil used to trip the ACB, and determine whether to control the
shunt trip coil directly or control it using additional relays.
2. When using external CTs with the module, the measured value is displayed as the value converted into the primary current of the CT.
Set values should be entered based on the module's input current values.
3. The set values of the ACB protection relay should be entered based on the module's input current values.
4. All protection relays of Accura 2750PC-ACB module generates Fault and MHT(Magnetic Holding Trigger) signals as ACB trip signals.
It is possible to select the Fault or MHT signal when performing the mapping of the digital output.
5. The threshold value is set based on the rms value, and the relay operates based on instantaneous peak values calculated by multiplying by √2.

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

Power supply¹
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal (Pluggable)
Wire specifications	2.1 — 3.5 mm² (14 — 12 AWG)
Rating 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) @Super Capacitor charging and full digital output operating
Rating insulation voltage(Ui)	300 V (at pollution degree 3)
Rating impulse withstand voltage(Uimp)	4 kV
Inrush current	Peak 31 A, duration less than 1 msec (AC 220 V)
	Peak 12 A, duration less than 200 usec (DC 110 V)
External input fuse capacity	2 A, 500 V
Accepted instantaneous power outage time	Minimum 10 sec (built-in super capacitor)
Voltage Input
Connector name	V1, V2, V3, VN²
Connector type	Screw-type terminal(pluggable)
Wire specifications	0.21 — 3.5 mm² (24 — 12AWG)
Measuring range	AC 5 — 300 V direct L-N (Line-to-Neutral)
	AC 8 — 520 V direct L-L (Line-to-Line)
Minimum measured value	AC 5 V direct L-N (Line-to-Neutral)
Rating usage voltage	520 V
Rating insulation voltage(Ui)	520 V (Overvoltage category III, pollution degree 2)
Rating impulse voltage(Uimp)	8 kV
Measurement frequency range	5 — 180 Hz
Impedance	6 MΩ (L-N: V1/V2/V3?Vn)
Burden	0.01 VA/Phase @220 V
Digital Input¹
Number of channels/forms	5 channels (external power supply)
Connector type	Screw-type terminal(pluggable)
Wire specifications	0.21 — 3.5 mm² (24 — 12AWG)
Insulation method	Uninsulated within a group
	Group 3: channel 11–15 (3DI₁₁ – 3DI₁₅) 3DI_G common
Input impedance	405 kΩ
Input type	Connection of external power supply
Maximum input voltage	AC 240 V
Low voltage range	AC 0 – 140 V
High voltage range	AC 165 – 240 V
Minimum pulse width	50 msec
Digital Output
Number of channels/ output form	9 channel(Form-A), channel 5 - channels 13			@ Accura 2750INV
	1 channel (Form-C), channel 5			@ Accura 2750VOL
Connector type	Screw-type terminal(Pluggable)
Wire specifications	0.21 — 3.5 mm² (24 — 12AWG)
Insulation	AC 2,000 V/ for 1min
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(TRX+), Tb(TRX-), SG(Shield-Ground)
Connector	Screw-type terminal(pluggable)
Protocol	1,200 — 115,200 bps³ , Modbus RTU
Communication cable	UL 2919 RS-485 1P[2P] 24AWG
Communication cable length	Maximum 1,219 m(4,000 ft)
LED
Front LED	POWER	Green	Turned On when control power operates normally
	DEVICE	Green	Blink, when the device operates normally(can be set to be turned on)
Connection with Module
Communication with Accura 2750PC the motor protection & control module	Internal dedicated protocol		1 port(A2750PC)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat.5e FTP(F/UTP)³
	Communication cable length		3 m
Communication with Accura 2750DCI the HMI module	Internal dedicated protocol		1 port(A2750DCI)
	Connector type		RJ45 connector
	Communication cable		Ethernet cable Cat.5e FTP(F/UTP)³
	Communication cable length		2 m
Measurement Specification
Voltage wiring method	3-phase 3-wire
Measurement data	Inverter output voltage wave
Frequency measurement	5 — 180 Hz
Number of samples per signal cycle	64 samples /Cycle
Voltage measurement method	True RMS measure(Low-pass filter cut-off frequency :188 Hz)
Voltage	Accuracy	IEC 61557-12 Class 0.5
	Measuring range	Line-to-line voltage	AC 9 — 520 V	AC 110 — 520 V (Accuracy guaranteed)
		Line-to-neutral voltage	AC 5 — 300 V	AC 65 — 300 V (Accuracy guaranteed)
	Minimum measurement	Line-to-neutral voltage	AC 5 V
	Measurement information	Line-to-line voltage (each phase / average, Maximum of each average/average)
		Line-to-neutral voltage (each phase/average)
		Fundamental line-to-line voltage (each phase / average)
		Unbalance(Negative, Positive, Maximum)

1. It is not available in Accura 2750VOL module.
2. The VN port is connected to the V3 port.
3. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master and the slave is 600 m.
4.FTP(F/UTP): Foiled Shield Twisted Pair

Accura 2750LCG LOP Control Gateway

Power Supply
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal(pluggable)
Wire specification	2.1 - 3.5 mm² (14 - 12 AWG)
Rating voltage(Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rating output voltage/power	24 V DC / 50 W
Rating consumption power	Maximum 60 VA(AC 220 V, 25°C) when 30 Accura 2750LC[I] modules are connected
Rating insulation voltage(Ui)	300 V (at pollution degree 2)
Rating impulse voltage(Uimp)	4 kV
Inrush current	Peak 40 A, duration less than 1.5 msec (AC 220 V)
	Peak 18 A, duration less than 300 usec (DC 110 V)
External input fuse capacity	2 A, 500 V
Allowable instantaneous power outage time	Typ. 50 ms
Connection with Module
Communication with Accura 2700M	Internal dedicated protocol	2 ports with the same functions(A2700M-1, A2700M-2)
	2 ports: connects 2 Accura 2700M modules	Accura 2700M device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP²
	Communication cable length	Maximum 300 m for each port
Communication with Accura 2750LC[I]	Internal dedicated protocol	4 ports with the same functions (LC/LM-1,LC/LM-2,LC/LM-3,LC/LM-4)
		Group1 2 ports: LC/LM-1,LC/LM-2
		Group2 2 ports: LC/LM-3,LC/LM-4
	2 ports within a group: ring connection	Communication redundancy¹
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP²
	Total communication cable length	Maximum 800m per group
	Communication cable power supply	24V DC/ 50 W available³
	Number of Accura 2750LC[I] connected	Maximum 15 per group, Maximum 30 for two groups(2 ring connections )
LCD
LCD features	1.2” (24.5 x 21.0mm) Customized Mono LCD with LED Backlight
Button
Number of front buttons	1(state check and SET button)

1. Ring connection should be made between two ports in the same group, and ring connections across two groups are not supported.
2. FTP: Foiled Shield Twisted Pair, STP: Braided Shield Twisted Pair, SFTP: Braided Foiled Shield Twisted Pair.
3. If the number of Accura 2750LC[I] modules per group exceeds 10, an Accura 2750LC POW module should be additionally connected.

Accura 2750LC[I] LOP Control Module

Power supply
Control power supply input	24V DC power supplied from Accura 2750LCG through the communication cable (Accura 2750LCG can supply power to 10 Accura 2750LC[I] modules per group)¹
Rated power consumption	Maximum 1 W(DC 24 V, 25°C)
function
Starts and stops the motor
Displays current and power values for each phase
Inhibits the operation of the motor when checking it
Displays event data and resets events
Connection with the Module
Communication with Accura 2750LCG	Internal dedicated protocol	2 ports with the same functions(LC/LM-A, LC/LM-B)
	2 ports: ring connection	Support for 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 through the cable	24 V DC supplied from Accura 2750LCG¹
	Number of Accura 2750LC[I] modules	Maximum 15 per group(ring connection)
FND
FND	10.0 mm (0.39") digit height seven-segment display(3-row 4-digit)
LED
Module operating status LED	EVENT	Orange	Turned 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 be turned on)
	ALARM	Orange	Turned On when an Alarm event occurs(can be set to blink)
	FAULT	Red	Turned On when a Fault event occurs(can be set to blink)
FND data LED	A	Green	Turned On when the FND data indicate current values
	kW	Green	Turned On when the FND data indicate power values
Motor operating status LED	RUN1	Red/Green/Orange	Turned On when the motor operates in normal direction or speed 1 mode
	RUN2	Red/Green/Orange	Turned On when the motor operates in reverse direction or speed 2 mode
	STOP	Red/Green/Orange	Turned On when the motor is stopped
	TEST	Green	Turned On when the motor is in Test mode
	RESET	Red/Orange	Turned On when a Fault event occurs
Selected control mode LED (Accura 2750LC only)	LO	Green	Turned On when Local is selected as LOP control mode
	RE	Orange	Turned On when Remote is selected as LOP control mode
Inverter operation mode LED (Accura 2750LCI only)	INV	Green	Turned On when inverter mode is selected as motor-unit operation mode
	BPS	Orange	Turned On bypass mode is selected as motor-unit operation mode
Safety LOCK KEY state LED	UNLOCK	Green	Turned On when the Safety LOCK KEY is unlocked²
	LOCK	Red	Turned On when the Safety LOCK KEY is locked (safety for on-site inspection, etc)
Button
Buttons for changing directions and performing special functions	Left(<)/ESC	Used to navigate to the left and perform the ESC function
	Up(^)/SETUP	Used to navigate upwards and enter SETUP mode
	Down(∨)/EVENT	Used to navigate downwards and enter EVENT mode
	Right(>)/ENTER	Used to navigate to the right and perform the ENTER function
Test/Reset multi-function button	TEST	Checks the connected Accura 2750P[C] module(It operates when no event occurs)
	RESET	Resets events on the motor-unit(when an event occurs)
Motor control button	RUN1	Run command in forward direction and speed 1 mode
	RUN2	Run command in reverse direction and speed 2 mode
	STOP	Stop command
Control mode button (Accura 2750LC only)	LOCAL	Local is selected as LOP control mode
	REMOTE	Local is selected as LOP control mode
Inverter operation mode (Accura 2750LCI Only)	INVERTER	Motor-unit operated by the inverter
	BYPASS	Motor-unit operated by the inverter
Safety LOCK KEY	Unlock	Normal operation state³
	Lock	Motor start inhibit state
Temperature Measurement
Temperature measurement range	0 – 100°C
Accuracy	±2% Full Scale (Full Scale: 100°C)
LC POW Module: Optional module which can be additionally connected to the rear of Accura 2750LC[I]
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal(pluggable)
Wire specifications	2.1 – 3.5 mm² (14 – 12 AWG)
Rating voltage(Us)	110 – 240 V AC 50/60 Hz, 110 – 300 V DC
Operating voltage range	0.8 x Us – 1.1 x Us
Rating output voltage/power	24 V DC / 20 W
Rating insulation voltage(Ui)	300 V (at pollution degree 2)
Rating impulse withstand voltage(Uimp)	4 kV
Inrush current	Peak 31 A, under duration 1.5 msec(AC 220 V)
	Peak 11 A, under duration 300 usec(DC 110 V)
External input fuse capacity	2 A, 500 V
Allowable instantaneous power outage time	Typ. 50 ms

1. If the number of Accura 2750LC[I] modules exceeds 10, an Accura 2750LC POW module should be additionally connected.
2. When the safety lock key status is changed from Locked to Unlocked, if the safety lock status of other modules is Locked,
the red LED (LOCK) is turned on and the green LED (UNLOCK) blinks to indicate that it is in the Locked state.
3. It is possible to start the motor only when the locked status of other modules is released.
4. FTP: Foiled Shield Twisted Pair, STP: Braided Shield Twisted Pair, SFTP: Braided Foiled Shield Twisted Pair

Unit-Socket

Function
Connection of communication cables per unit	The Unit-Socket is used to connect Accura 2750P[C] modules, enabling easy separation of cables when the unit with Accura 2750P[C] module is withdrawn. This does not affect communication of other units.
	Removes T-stub connections through the input and output structure of communication cables
Communication
Port	Number of ports	3 ports(RJ45A, A2750, RJ45B) (The RJ45A and RJ45B ports have the same functions)
	Connector type	RJ45 connector
RJ45A, RJ45B Port	Used to connect with Accura 2700M or an adjacent Unit-socket
	Supports communication redundancy through ring connection
	Communication cable length between Unit-Sockets	Average 3m¹
	Total communication cable length	Max.120 m (30 modules in a ring topology with unit-sockets)
Accura 2750 Port	Used to connect with Accura 2750P[C]
	Communication cable length	Max. 3 m

1. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.

Bridge-Socket

Function
Support for redundancy	2 Accura 2700M modules share the communication network of Accura 2750P[C] for redundancy
	2 Accura 2750LCG modules share the communication network of 2750LC[I] for redundancy
Communication
Port	Number of ports	3 ports(CH_A, COM, CH_B) (CH_A/CH_B ports have the same functions )
	Connector type	RJ45 Connector
Accura 2750P[C] Network Sharing
CH_A, CH_B Port	Used to connect Accura 2700M modules
	Communication cable length	3m¹
COM Port	Used to connect with the Unit-Socket
	Communication cable length	3m¹
Accura 2750LC[I] Network Sharing
CH_A, CH_B Port	Used to connect Accura 2750LCG modules
	Communication cable length	3m²
COM Port	Used to connect with Accura 2750LC[I] module
	Total communication cable length	Max. 800 m per group (15 Accura 2750LC[I] modules in a ring connection)

1. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.
2. If the total cable length in a ring topology does not exceed 800 m, the maximum allowable cable length between units is 20 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 — 65 °C (-4 — 149 ℉)
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
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
	4kV / 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 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
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