Instruction manual

Troubleshooting Alarms and Warnings
9 - 6
Display Error Definition Cause Action
32 Overcurrent Current that flew is
higher than the
permissible current
of the servo
amplifier.
1. Short occurred in servo amplifier
output phases U, V and W.
Correct the wiring
2. Transistor of the servo amplifier
faulty.
Checking method: Alarm (32) occurs if
power is switched on after U, V and W
are disconnected.
Change the servo
amplifier
3. Low impedance ground fault
occurred in servo amplifier output
phases U, V and W.
Eliminate earth fault
4. External noise caused the
overcurrent detection circuit to
misoperate.
Take noise
suppression
measures.
33 Overvoltage Converter bus
voltage exceeded
400V (servo
amplifier 200V) and
800V (servo
amplifier 400V)
respecively.
1. Lead of built-in regenerative brake
resistor or regenerative brake option is
open or disconnected.
1. Change lead
2. Connect
correctly
2. Regenerative transistor faulty Change servo
amplifier
3. Wire breakage of built-in
regenerative brake resistor or
regenerative brake option
1. Change servo
amplifier
2. Change
regenerative brake
option
4. The regenerative transistor is
broken.
Change servo
amplifier
5. Power supply voltage high Connect the units to
the correct power
supply
34 CRC error Bus cable is faulty. 1. Bus cable disconnected Connect bus cable
correctly
2. Bus cable fault Change the bus
cable
3. Noise entered bus cable Ensure correct
cable laying and
screening
4. Termination connector disconnected Connect
termination
connector
5. The same No. exists in the servo
amplifier side station setting
Set station number
correctly
35 Command
frequency error
Input frequency of
command pulse is
too high.
1. Command given is greater than the
maximum speed of the servo motor
Review operation
program.
2. Noise entered bus cable Ensure correct
cable laying and
screening
3. Servo system controller failure Change the servo
system controller
36 Transfer error Bus cable or printed
board is faulty
1. Bus cable is disconnected. Connect the
connector of the
bus cable
2. Bus cable fault Change the bus
cable
3. Printed board is faulty Change the servo
amplifier
4. Termination connector
disconnected
Connect
termination
connector
Tab. 9-2: Failure corrective action (3)