LNS Quick Load Servo 65 Troubleshooting Manual page 33

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Display Name
AL.17 Board error
AL.19 Memory error 3
AL.1A Motor
combination
error
AL.20 Encoder error 2
AL.24 Main circuit
error
AL.25 Absolute
position erase
AL.30 Regenerative
alarm
QUICK LOAD SERVO 65/80
Definition
CPU/parts fault Faulty parts in the servo amplifier
ROM memory fault
Alarm (A.17 or A.18) occurs if
power is switched on after
disconnection of all cables but the
control circuit power supply
cables.
Wrong combination Wrong combination of servo
of servo amplifier amplifier and servo motor
and servo motor. connected.
Communication 1. Encoder connector (CN2)
error occurred disconnected.
between encoder
2. Encoder fault
and servo amplifier.
3. Encoder cable faulty(wire
breakage or shorted)
Ground fault 1. Power input wires and servo
occurred at the motor output wires are in contact
servomotor outputs at main circuit terminal block
(U, V and W (TE1).
phases) of the
2. Sheathes of servo motor power
servo amplifier.
cables deteriorated, resulting in
ground fault.
3. Main circuit of servo amplifier
failed.
AL.24 occurs if the servo is
switched on after disconnecting
the U, V, and W power cables
from the servo amplifier.
Absolute position 1. Reduced voltage of super
data in error capacitor in encoder
2. Battery voltage low
3. Battery cable or battery is
faulty.
Power was 4. Super capacitor of the absolute
switched on for the position encoder is not charged
first time in the
absolute position
detection system.
Permissible 1. Wrong setting of parameter No.
regenerative power 0
of the built-in
2. Built-in regenerative brake
regenerative brake
resistor or regenerative brake
resistor or
option is not connected.
regenerative brake
3. High-duty operation or
option is exceeded.
continuous regenerative operation
caused the permissible
regenerative power of the
regenerative brake option to be
exceeded.
Call the status display and check
the regenerative load ratio.
4. Power supply voltage is
abnormal. MR-J2S-
more
MR-J2S-
5. Built-in regenerative brake
resistor or regenerative brake
option faulty.
Regenerative 6. Regenerative transistor faulty.
transistor fault
1) The regenerative brake option
has overheated abnormally.
2) The alarm occurs even after
removal of the built-in
regenerative brake resistor or
regenerative brake option.
Cause
Change the servo amplifier.
Checking method
Use correct combination.
Connect correctly.
Change the servo motor.
Repair or change the cable.
Connect correctly.
Change the cable.
Change the servo amplifier.
Checking method
After leaving the alarm occurring for a
few minutes, switch power off, then on
again. Always make home position
setting again.
Change battery.
Always make home position setting
again.
After leaving the alarm occurring for a
few minutes, switch power off, then on
again. Always make home position
setting again.
Set correctly.
Connect correctly
1. Reduce the frequency of positioning.
2. Use the regenerative brake option of
larger capacity.
3. Reduce the load.
Checking method
Review power supply
CP:260V or
Change servo amplifier or regenerative
CP1:135V or more
brake option.
Change the servo amplifier.
Checking method
CHA PTER 1: ALAR MS
Action