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Accura 2750LM Main 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
Power supply (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 bps ¹	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 bus ¹
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, SFTP ²
	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

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

Accura 2750LD HMI Module

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 Modules

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, SFTP ¹
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 ℃
	Accuracy	±0.5 % of full scale (full scale: 200 ℃)

1. FTP: Foiled Shielded Twisted Pairs, STP: Braided Shielded Twisted Pairs, SFTP: Braided Foiled Shielded Twisted Pairs

Accura 2750PS Module

Power Supply ¹
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 rating ²	2 A, 500 V
Output power supply	Port name	RJ45A, RJ45B: Used to supply power to Accura 2750IO modules
		+24V, -: 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. To ensure proper operation at power-up, Accura 2750LM and Accura 2750PS modules should be powered on simultaneously using a single switch.
2. 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.

General Specifications

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
Operating environment	Pollution degree 2
General
Warranty period	2 years
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 and LCD screen of Accura 2750LD	V2	UL 94
	650 °C	IEC 60695-2-12
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 immunity	±2 kV / 5 kHz (power)	IEC 61000-4-4
	±1 kV / 5 kHz (signal)
Surge immunity	±1 kV (line-earth)	IEC 61000-4-5
	±0.5 kV (line-line)
Immunity to conducted disturbances induced by radio-frequency field	3 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 %, 0.5 cycles	IEC 61000-4-11
	40 %, 10/12 cycles
	70 %, 25/30 cycles
	80 %, 250/300 cycles ¹
EMC Emission	EN 55011
Conducted emission and radiated emission	Group1 Class A

1. Short interruptions

Accura 2750LM Main Module
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
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
Accura 2750LD HMI Module
Description	4 buttons and a 5-inch color TFT LCD with a touch panel
	Setup, control, and status monitoring
Accura 2750IO IO Modules
Accura 2750IO-DI1
Description	Digital inputs: 11 channels
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
Accura 2750IO-DI2
Description	Digital inputs: 22 channels
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
Accura 2750IO-DIO
Description	Digital inputs and outputs: 11 DI channels and 6 DO channels
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
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
Accura 2750PS Module
Description	Supplies additional power to Accura 2750IO modules