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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 the RUN/STOP command is executed by pressing a push button, the signals are sent to Accura 2750PC through signal cable 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 allows users to easily detect cable disconnection and short-circuit conditions. Accura 2750LCG supports communication redundancy through a ring topology using two communication 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 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 communication cable	24 V DC supplied from Accura 2750LCG
Maximum number of connectable Accura 2750LC[I] modules	15 per group (ring topology)
	A 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 (Accura 2750LC POW)	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 module: 24 V DC (supplies power to up to 10 Accura 2750LC[I] modules)

Accura 2750LC[I] LOP Control Module

Power Supply
Power supply input	24 V DC power 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)
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 to the Module
Communication with 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 cable	24 V DC 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 operating status 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 stay 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 values
	kW	Green	Turns on when the FND display indicates power values
Motor operating status LED	RUN1	Red/Green/Orange	Indicates that the motor is operating in the normal direction or in Speed 1 mode
	RUN2	Red/Green/Orange	Indicates that the motor is operating in the reverse direction or in Speed 2 mode
	STOP	Red/Green/Orange	Indicates motor stop status
	TEST	Green	Turns on when the motor is in test mode
	RESET	Red/Orange	Turns on when a fault event occurs
Selected control mode LED (Accura 2750LC only)	LO	Green	Turns on when Local is selected as LOP control mode
	RE	Orange	Turns on when Remote is selected as LOP control mode
Inverter operation mode LED (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 (safety for on-site inspection, etc)
Button
Buttons for changing directions and performing special functions	Left(<)/ESC	Navigates to the left and performs the ESC function
	Up(^)/SETUP	Navigates upward and enters SETUP mode
	Down(∨)/EVENT	Navigates downward and enters EVENT mode
	Right(>)/ENTER	Navigates to the 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 when no events occur)
	RESET	Resets events on the motor unit (when an event occurs)
Motor control button	RUN1	Executes a run command in forward direction or speed 1 mode
	RUN2	Executes a run command in reverse direction or speed 2 mode
	STOP	Executes a stop command
Control mode button (Accura 2750LC only)	LOCAL	Selects Local as the MCC control mode.
	REMOTE	Selects Remote as the MCC control mode.
Inverter operation mode button (Accura 2750LCI only)	INVERTER	The motor operates in inverter mode.
	BYPASS	The motor operates in bypass mode.
Safety LOCK KEY	Unlock	Turns on when the safety LOCK KEY is unlocked³
	Lock	Turns on when the safety LOCK KEY is locked
Temperature Measurement
Temperature measurement range	0 - 100 °C
Accuracy	±2 % Full Scale (Full Scale: 100 °C)
LC POW 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 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 time	Typ. 50 ms

1. If the number of connected Accura 2750LC[I] modules exceeds 10 per group, an additional Accura 2750LC POW module must be 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) turns on and the green LED (UNLOCK) blinks to indicate that it is in the Locked state.
3. The motor can be started only when the locked status of other modules has been cleared.
4. FTP: Foiled Shielded Twisted Pairs, STP: Braided Shielded Twisted Pairs, SFTP: Braided Foiled Shielded Twisted Pairs

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
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

1. Short interruptions