LNS QUICK LOAD SERVO S3 Troubleshooting And Spare Parts Manual page 41

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CAUTION
Alarm definitions and causes
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
AL.10 Undervoltage
AL.12 Memory error 1
AL.13 Clock error
AL.15 Memory error 2
AL.16 Encoder error 1
QUICK LOAD SERVO S3
•
When any alarm has occurred, eliminate its cause, ensure safety, then reset the 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 Alarms and warning list.
Definition
Power supply voltage 1. Power supply voltage is low.
dropped. 2. There was an instantaneous
MR-J2S- CP: control power failure of 60ms or
160V or less
longer.
MR-J2S- CP1:
3. Shortage of power supply
83V or less
capacity 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
Alarm (AL.10) occurs if power is
switched on after disconnection of
all cables but the control circuit
power supply cables.
RAM, memory fault Faulty parts in the servo amplifier
Printed board fault
EEP-ROM fault
Alarm (any of AL.11 to 13 and 15)
occurs if power is switched on after
disconnection of all cables but the
control circuit power supply cables.
Communication error 1. Encode connector (CN2)
occurred between disconnected.
encoder and servo
2. Encoder fault
amplifier.
3. Encoder cable faulty
(wire breakage or short)
4. Wrong combination of servo
amplifier and servo motor
Cause
Review the power supply.
Change the servo amplifier.
Checking method
Change the servo amplifier.
Checking method
Connect correctly.
Change the servo motor.
Repair or change the cable.
Use correct combination.
Chapter 1: Alarms
Action