Mitsubishi Electric A173UHCPU Programming Manual page 339

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