Hitachi J300U Series instruction manual Other displays, For error contents, see, 12-16

12.4Protection function display list when the remote operator is used

There are protection functions for overcurrent, overvoltage, and undervoltage provided to protect the inverter. When one of the functions is performed, the output is cut off, and the motor is put into the free run state, and the status is kept until the inverter is forced to reset.

		Remote operator(DOP)
Name	Digital operator display	copy unit(DRW)display
		ERR1 ✽ ✽ ✽ ✽
	Constant speed	OC.Drive
Overcurrent	Deceleration	OC.Decel
protection
	Acceleration	OC.Accel
Overload		Over.L
protection
Braking resistor		OL.BRD
overload
Overvoltage		Over.V
protection
EEPROM error		EEPROM
Undervoltage		Under.V
protection
CT error		CT
CPU error		CPU
External trip		EXTERNAL
USP error		USP
Ground fault		GND.Flt
protection

Other displays

		Remote operator(DOP)
Name	Digital operator display	copy unit(DRW)display
		ERR1 ✽ ✽ ✽ ✽
Input overvoltage		OV.SRC
Instantaneous		Inst.P-F
power failure
Option connec-	Option 1	NG.OP1
tion error	Option 2	NG.OP2
Option PCB	Option 1	OP1
error
(NOTE 2)	Option 2	OP2
Phase failure	(NOTE 1)	PH.Fail
protection error
	Constant speed	PM.Drive
Power module	Deceleration	PM.Decel
protection	Acceleration	PM.Accel
	Stop	PM.ERR
Undervoltage		UV.WAIT
standby

For error contents, see page 8-1.

	Display	Cause	Description
		Communication error	This is displayed when an error occurs between the inverter and remote operator.
		*=1. Protocol error	When the STOP key or another key is pressed, the original display appears.
R-ERROR COMM<✽>
		=2. Time-out error	When the original display does not appear, turn the power off and then on once
			again. Check whether any connectors are loose.
		During inverter running	If one of the displays on the left occurs when the copy unit is used to read or copy,
R-ERROR INV.RUN
			take the corresponding countermeasure.
			• INV. RUN: Stop the running.
R-ERROR INV.TRIP		Under inverter trip
			• INV. TRIP: Press the STOP key to release the trip.
			• INV. TYPE: The inverter type of the copy source is different from that of the
		Inverter type mismatch
R-ERROR INV.TYPE			copy destination. Use the same type of inverter to read or copy.
		Inverter read lock	The fourth switch of the DIP switch on the back of the remote operator is ON.
R-ERROR RD LOCK
			When reading data, turn the switch OFF.
		Instantaneous power	This indicates that the instantaneous power failure restart function is being performed.
RESTART	✽ ✽ ✽ .✽ s
		failure restart function in	• RESTART: 0 start is in execution.
ADJUST	✽ ✽ ✽ .✽ s	operation	• ADJUST: Frequency matching is in execution.
		Undervoltage	The supply voltage is lowered to the undervoltage level. When this display
UV WAIT
			appears, turn the power on once again.
		Power OFF	The undervoltage after the power is turned off is displayed.
POWER OFF
			This is displayed after the autotuning measurement is finished.
Tuning OK		Autotuning function end
			• Tuning OK: The measurement terminates normally.
		display
Tuning NG			• Tuning NG: The measurement fails.
NOTE 1: Power OFF during motor deceleration may cause an input phase failure error.
NOTE 2: When the J-FB is installed, an error is display for each factor as shown below.
			Digital operator	DOP, DRW
			display

Encoder line break: Overspeed: Positioning error: Thermistor line break: Motor overheat:

Malfunction or abnormality on built-in CPU of the option:

12-16

OP1 0 OP1 1 OP1 2 OP1 4 OP1 5 OP1 7