Mitsubishi Electronics Q172HCPU, Q173HCPU APPENDICES, Table 1.12 Servo error (2000 to 2899) list (Continued)

APPENDICES

Table 1.12 Servo error (2000 to 2899) list (Continued)

Error		Error cause	Error check	Error	Corrective action
code	Name	Description		processing
		• Encoder connector (CN2) disconnected.			• Connect correctly.
		• Encoder fault			• Replace the servomotor.
2016	Encoder error 1	• Encoder cable faulty			• Repair or replace the cable.
	(At power on)	(Wire breakage or shorted)			• Set the correct encoder type of
		• Encoder cable type (2-wire, 4-wire)
					servo parameter.
		selection was wrong in parameter
		setting.
		• Faulty parts in the servo amplifier			• Replace the servo amplifier.
		(CPU/parts fault)	• Servo amplifier
		[Checking method]
			power on.
2017	Board error	Servo error [2017] occurs if power is
			• Multiple CPU
		switched on after disconnection of all
			system power on.
		cables but the control circuit power
		supply cables.
		• Faulty parts in the servo amplifier
		(ROM memory fault)
	Memory error 3	[Checking method]		Immediate
2019	(Flash ROM)	Servo error [2019] occurs if power is		stop
		switched on after disconnection of all
		cables but the control circuit power
		supply cables.
		• Encoder connector (CN2) disconnected.			• Connect correctly.
2020	Encoder error 2	• Encoder fault			• Replace the servomotor.
		• Encoder cable faulty			• Repair or replace the cable.
		(Wire breakage or shorted)
		• Power input wires and servomotor			• Correct the wiring.
		power wires are in contact.
		[Checking method]	Any time during
		Servo error [2024] occurs if servo is	operation
2024	Main circuit	switched on after disconnecting the U, V
	error	and W power cables from the servo
		amplifier.
		• Sheathes of servomotor power cables			• Replace the cable.
		deteriorated, resulting in ground fault.
		• Main circuit of servo amplifier failed.			• Replace the servo amplifier.
		• Voltage drop in encoder			• After leaving the servo error
		(Battery of servo amplifier			[2025] occurring for a few
		disconnected.)		Immediate	minutes, switch power off, then
					on again. Always make home
				stop	position return again.
			• Servo amplifier
		• Battery voltage low			• Replace the battery.
	Absolute		power on.	Home
2025		• Battery cable or battery is faulty.			Always make home position
	position erase		• Multiple CPU	position
					return again.
			system power on.	return
		• Home position return not set. (Power			• After leaving the servo error
				request
		was switched on for the first time in the		ON	[2025] occurring for a few
		absolute position detection system.)			minutes, switch power off, then
					on again. Always make home
					position return again.

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