Mitsubishi Electronics MR-J2S- CL Remedies for alarms, Troubleshooting, Point, 11, Display, Name

11. TROUBLESHOOTING

11.2.2 Remedies for alarms

When any alarm has occurred, eliminate its cause, ensure safety, then reset the

CAUTION alarm, and restart operation. Otherwise, injury may occur.

If an absolute position erase alarm (AL.25) occurred, always make home position setting again. Otherwise, misoperation may occur.

POINT

When any of the following alarms has occurred, always remove its cause and allow about 30 minutes for cooling before resuming operation. If operation is resumed by switching control circuit power off, then on to reset the alarm, the servo amplifier and servo motor may become faulty.

Regenerative error (AL.30) Overload 1 (AL.50) Overload 2 (AL.51)

The alarm can be deactivated by switching power off, then on press the "SET" button on the current alarm screen or by turning on the reset (RES). For details, refer to Section 11.2.1.

When an alarm occurs, the trouble (ALM) switches off and the dynamic brake is operated to stop the servo motor. At this time, the display indicates the alarm No.

The servo motor comes to a stop. Remove the cause of the alarm in accordance with this section. The optional servo configuration software may be used to refer to the cause.

Display	Name	Definition			Cause	Action
AL.10	Undervoltage	Power supply	1. Power supply voltage is low.			Review the power supply.
		voltage dropped.	2. There was an instantaneous
		MR-J2S- CL:		control power failure of 60ms or
		160VAC or less		longer.
		MR-J2S- CL1:	3. Shortage of power supply capacity
		83VAC or less		caused the power supply voltage to
				drop at start, etc.
			4. Power was restored after the bus
				voltage had dropped to 200VDC.
				(Main circuit power switched on
				within 5s after it had switched off.)
			5. Faulty parts in the servo amplifier			Change the servo amplifier.
					Checking method
				Alarm (AL.10) occurs if power is
				switched on after disconnection
				of all cables but the control
				circuit power supply cables.
AL.12	Memory error 1	RAM, memory fault	Faulty parts in the servo amplifier			Change the servo amplifier.
AL.13	Clock error	Printed board fault			Checking method
				Alarm (any of AL.11 and 13)
				occurs if power is switched on
				after disconnection of all cables
				but the control circuit power
				supply cables.
AL.15	Memory error 2	EEP-ROM fault	1. Faulty parts in the servo amplifier			Change the servo amplifier.
					Checking method
				Alarm (AL.15)
				occurs if power is switched on
				after disconnection of all cables
				but the control circuit power
				supply cables.

2.The number of write times to EEP- ROM exceeded 100,000.

AL.16	Encoder error 1	Communication	1.	Encode connector (CN2)	Connect correctly.
		error occurred		disconnected.
		between encoder	2.	Encoder fault	Change the servo motor.
		and servo amplifier.	3.	Encoder cable faulty	Repair or change the cable.
				(wire breakage or short)

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