Mitsubishi Electric Q172CPU - Page 592

APP - 31
APPENDICES
Table 2.13 Servo error (2000 to 2799) list
Error cause Error
code
Name Description
Error check
Error
processing
Corrective action
• The power supply voltage is 160VAC
or less. (320VAC or less for 400VAC
series servo amplifier.)
• Measure the input voltage (R, S,
T) with a voltmeter.
• Interruption of 15[ms] or longer
occurred.
• Monitor with an oscilloscope to
check whether a momentary
power interruption has occurred.
2010 Low voltage
• The power supply voltage dropped at
the start, etc. due to the insufficient
power capacity.
Any time during
operation
• Review the power capacity.
2012 Memory error 1
• Servo amplifier SRAM fault.
• Servo amplifier EPROM check sum
error.
• Servo amplifier
power on.
• Multiple CPU
system power on.
2013 Clock error
• Servo amplifier clock fault.
• Replace the servo amplifier.
2014 Watchdog
• Servo amplifier hardware fault.
• Multiple CPU system hardware fault.
Any time during
operation
• Replace the servo amplifier.
• Replace the Multiple CPU
system.
2015 Memory error 2 • Servo amplifier EEPROM fault. • Replace the servo amplifier.
2016 Encoder error 1
• Fault in communication with the
encoder.
• Check the encoder cable
connector for disconnection.
• Replace the servomotor.
• Replace the encoder cable.
• Check the combination of
encoder cable type (2-wire/4-
wire type) and servo parameter.
2017 PCB error
• Faulty device in the servo amplifier
PCB.
2019 Memory error 3
• Check sum error of the servo
amplifier flash ROM.
• Servo amplifier
power on.
• Multiple CPU
system power on.
`• Replace the servo amplifier.
2020 Encoder error 2
• Fault in communication with the
encoder.
• Check the encoder cable
connector for disconnection.
• Replace the servomotor.
• Replace the encoder cable.
2021
Converter RD
off (400VAC
series servo
only)
• The servo-on (SON) signal turned on
when the ready signal (RD) turned off
of the converter.
1. Bus voltage is low.
2. Alarm occurrence in Fault in
communication with the encoder
converter.
• Remove the cause of the
converter alarm.
• Release the alarm.
2021
(Note-1)
Axis set error
• The servo amplifier axis No. installed
the same base unit for the servo
amplifier overlapped.
Any time during
operation
Immediate
stop
• Set correctly so that the axis No.
does not overlap.