Mitsubishi Electric Q Series Programming Manual page 481

APPENDICES
Error
code
Name
• Encoder connector (CN2) disconnected.
• Encoder fault
• Encoder cable faulty
Encoder error 1
2016
(Wire breakage or shorted)
(At power on)
• Encoder cable type (2-wire, 4-wire)
selection was wrong in parameter
setting.
• Faulty parts in the servo amplifier
(CPU/parts fault)
[Checking method]
Servo error [2017] occurs if power is
2017 Board error
switched on after disconnection of all
cables but the control circuit power
supply cables.
• Faulty parts in the servo amplifier
(ROM memory fault)
[Checking method]
Memory error 3
2019 Servo error [2019] occurs if power is
(Flash ROM)
switched on after disconnection of all
cables but the control circuit power
supply cables.
• Encoder connector (CN2) disconnected.
• Encoder fault
2020 Encoder error 2
• Encoder cable faulty
(Wire breakage or shorted)
• Power input wires and servomotor
power wires are in contact.
[Checking method]
Servo error [2024] occurs if servo is
switched on after disconnecting the U, V
Main circuit
2024
and W power cables from the servo
error
amplifier.
• Sheathes of servomotor power cables
deteriorated, resulting in ground fault.
• Main circuit of servo amplifier failed.
• Voltage drop in encoder
(Battery of servo amplifier
disconnected.)
• Battery voltage low
Absolute
2025
• Battery cable or battery is faulty.
position erase
• Home position return not set. (Power
was switched on for the first time in the
absolute position detection system.)
Table 1.13 Servo error (2000 to 2899) list (Continued)
Error cause
Description
Error check
processing
• Servo amplifier
power on.
• Multiple CPU
system power on.
Immediate
Any time during
operation
Immediate
• Servo amplifier
power on.
• Multiple CPU
system power on.
APP - 26
Error
Corrective action
• Connect correctly.
• Replace the servomotor.
• Repair or replace the cable.
• Set the correct encoder type of
servo parameter.
• Replace the servo amplifier.
stop
• Connect correctly.
• Replace the servomotor.
• Repair or replace the cable.
• Correct the wiring.
• Replace the cable.
• Replace the servo amplifier.
• After leaving the servo error
[2025] occurring for a few
minutes, switch power off, then
on again. Always make home
stop
position return again.
• Replace the battery.
Home
Always make home position
position
return again.
return
• After leaving the servo error
request
[2025] occurring for a few
ON
minutes, switch power off, then
on again. Always make home
position return again.