Mitsubishi Electric A173UHCPU Programming Manual page 351

APPENDICES
Table 2.13 Servo Power Supply Module Error (2800 to 2999) List
Error Cause
Error
Code
Name
• The power supply voltage of the servo
power supply module fell below
170VAC.
2810 Undervoltage
• Instantaneous power failure occurred.
• Load is too large.
• High-duty operation or continuous
regenerative operation caused the max.
load capacity of the regenerative brake
resistor to be exceeded.
• Regenerative power transistor was
Excessive
2830
damaged.
regeneration
• Regenerative brake resistor setting
mistake in system settings
• Regenerative brake resistor wiring
mistake.
• Regenerative brake resistor connection
mistake.
• Regenerative power transistor was
2833 Overvoltage
damaged.
• Regenerative brake resistor is dead.
• Power supply voltage is high.
• The servo power supply module fan is at
a stop.
Amplifier power
• The continuous output current of the
2847
supply overheat
servo power supply module is exceeded.
• Thermal sensor fault.
• 80% level of the excessive regeneration
Excessive
2940
regeneration error (2830) was detected.
warning
(2) Servo power supply module errors (2800 to 2999)
The servo power supply module errors are detected by the servo amplifier and
assigned error codes 2800 to 2999.
When any of the servo errors occurs, the servo error detection signal
(M2408+20n) turns ON. Eliminate the error cause and turn ON the servo error
reset (M3208+20n) to reset the servo error, and make a restart. (However, the
servo error detection signal will not turn ON for any of the error codes 2900 to
2999 as they are warning.)
(Note-1): For regenerative alarm protection (error code 2830), the status when
the protective circuit was activated is still retained in the servo
amplifier after activation. The data stored is cleared when the external
power is switched OFF, but is not cleared by the RESET signal.
(Note-2): If the external power is switched OFF repeatedly to reset the error
code 2830, overheat may lead to damage to the devices. Therefore,
resume operation after removing the cause without fail.
The servo power supply module error definitions are given in Table 2.13.
Description
At any time during operation
Error
When Error Checked
Processing
Immediate stop
Operation
continues
APP − 34
Corrective Action
• Reconsider the power supply equipment.
• Reconsider the power supply capacity.
• Reconsider the operation pattern, e.g. decrease
the acceleration/deceleration frequencies or
reduce the speed.
• Change the servo power supply module.
• Reconsider the system settings.
• Correct the wiring.
• Correct the wiring.
• Change the servo power supply module.
• Change the regenerative brake resistor.
• Reconsider the power supply equipment.
• Change the fan.
• Reduce the load.
• Change the servo power supply module.
• Refer to details of the excessive regeneration
error (2830).