Mitsubishi Electric A173UHCPU - Page 339

APPENDICES
APP − 22
Table 2.12 Servo Amplifier Error List (2000 to 2799)
Error Cause
Error
Code
Amplifier
Type
Name Description
When Error Checked Error Processing Corrective Action
A
P-N non-wiring
• P-N of the servo power supply
module are not wired to P-N of the
ADU.
• Reconsider wiring.
• The power supply voltage is less
than 160 VAC. (320VAC or less for
400VAC series servo)
• Measure the input voltage (R, S, T) with
a voltmeter.
• A momentary power, interruption of
15ms or longer has occurred.
• Monitor with an oscilloscope to check
whether a momentary power
interruption has occurred.
2010
M
Low voltage
• The power supply voltage dropped,
for example when motion control
started, due to insufficient power
capacity.
At any time during operation.
• Review the power capacity.
A
Internal memory
alarm
• ADU's SRAM fault. • At power-on of servo
amplifier
• Change the ADU.
2012
M
Memory error 1
• Servo amplifier SRAM is faulty.
• Servo amplifier EPROM check sum
error.
• When the servo amplifier
power is turned ON
• At the leading edge of the
PLC READY flag (M2000)
• When a servo error is reset
• When the power to the
servo system CPU is
turned ON
• Replace the servo amplifier.
2013
M
Clock error
• Servo amplifier clock fault. • Replace the servo amplifier.
• Servo control system fault • Reset and recheck the servo system
CPU.
A
• ADU fault • Change the ADU.2014
M
Watchdog
• Servo amplifier hardware fault
• Servo system CPU hardware fault
At any time during operation
• Replace the servo amplifier.
• Replace the servo system CPU.
A
2-port memory
alarm
• ADU's 2-port memory fault. • At power-on of servo
amplifier
• At servo error reset
• Reset and recheck the servo system
CPU.
• Change the ADU.
2015
M
Memory error 2
• Servo amplifier EEPROM fault • When the servo amplifier
power is turned ON
• At the leading edge of the
PLC READY flag (M2000)
• When a servo error is reset
• When the power to the
servo system CPU is
turned ON
• Replace the servo amplifier.
A
• At initialization, communication with
encoder is not normal.
• The encoder type (ABS/INC) set in
system settings differs from the
actual encoder type.
• At power-on of servo
amplifier
• At servo error reset
• Reset and recheck the servo system
CPU.
• Change the servo motor (encoder).
• Reconsider the system settings.
2016
M
Position sensor
error 1
• Fault in communication with the
encoder
• When the servo amplifier
power is turned ON
• At the leading edge of the
PLC READY flag (M2000)
• When a servo error is reset
• When the power to the
servo system CPU is
turned ON
• Check the encoder cable connector for
disconnection.
• Change the servo motor.
• Change the encoder cable.
• Check the combination of encoder
cable type (2-wire/4-wire type) and
servo parameter.
A
• ADU's analog-to-digital converter is
faulty.
• At power-on of servo
amplifier
• At servo error reset
• Reset and recheck the servo system
CPU.
• Change the ADU.
2017
M
PCB error
• Faulty device in the servo amplifier
PCB.
• When the servo amplifier
power is turned ON
• At the leading edge of the
PLC READY flag (M2000)
• When a servo error is reset
• When the power to the
servo system CPU is
turned ON
• Replace the servo amplifier.
2019
M
Memory error 3
• Servo amplifier flash ROM check
sum error
• When the servo amplifier
power is turned ON
• At the leading edge of the
PLC READY flag (M2000)
• When a servo error is reset
• When the power to the
servo system CPU is
turned ON
Immediate stop
• Replace the servo amplifier.