10 - 6
10. TROUBLESHOOTING
10.2.2 Remedies for alarms
CAUTION
When any alarm has occurred, eliminate its cause, ensure safety, then reset the
alarm, and restart operation. Otherwise, injury may occur.
As soon as an alarm occurs, turn off Servo-on (SON) and power off the power
supply.
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 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 signal (RES). For
details, refer to section 10.2.1.
When an alarm occurs, the trouble signal (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. Use the
optional MR Configurator (servo configuration software) to refer to the cause of the alarm.
Display Name
Definition
Cause
Action
1. Power supply voltage is low.
2. There was an instantaneous control
power failure of 60ms or longer.
3. Shortage of power supply capacity
caused the power supply voltage to
drop at start, etc.
4. The bus voltage dropped to
200VDC.
Check the power supply.
AL.10 Undervoltage Power
supply
voltage dropped to
160VAC or less.
5. Faulty parts in the servo amplifier
Change the servo amplifier.
AL.12
Memory error 1 RAM, memory fault
AL.13
Clock error
Printed board fault
Faulty parts in the servo amplifier
Change the servo amplifier.
1. Faulty parts in the servo amplifier
AL.15
Memory error 2 EEP-ROM fault
2. The number of write times to EEP-
ROM exceeded 100,000.
Change the servo amplifier.
1. Encoder connector (CN2)
disconnected.
Connect correctly.
2. Encoder fault
Change the servo motor.
AL.16
Encoder error 1 Communication error
occurred between
encoder and servo
amplifier.
3. Encoder cable faulty
(Wire breakage or shorted)
Repair or change cable.
CPU/parts fault
1. Faulty parts in the servo amplifier
Change the servo amplifier.
AL.17 Board
error
The output terminals
U, V, W of the servo
amplifier and the
input terminals U, V,
W of the servo motor
are not connected.
2. The wiring of U, V, W is
disconnected or not connected.
Correctly connect the output terminals U, V,
W of the servo amplifier and the input
terminals U, V, W of the servo motor.
AL.19
Memory error 3 ROM memory fault
Faulty parts in the servo amplifier
Change the servo amplifier.
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Summary of Contents for EZMOTION MR-E Super MR-E-10A-QW003
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