Troubleshooting For Each Servo Alarm - Mitsubishi Electric MELDAS MDS-B Series Instruction Manual

11-7 Troubleshooting for each servo alarm

[Alarm/warning check timing]
f1: When servo driver power is turned ON
f2: When CNC power supply is turned ON (emergency stop ON)
f3: During normal operation (servo ON)
f4: During axis removal (ready ON, servo OFF)
(Note) Note that warning "93" could occur even when the axis is reinstalled after removal.
Memory error:
Alarm No.
Error in drive unit memory IC (SRAM, FROM)
12
Investigation details
1 Check the repeata bility.
2 Check if there is any abnormality in the
unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Software process error:
Alarm No.
The driver's software processing time did not end within the specified time, or an
13
illegal IT process was carried out.
Investigation details
1 Check whether the servo software
version was changed recently.
2 Check the repeatability.
3 Check if there is any abnormality in the
unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Software processing error 2:
Alarm No.
The current loop process, of the driver software processing times, did not end within
14
the specified time.
Investigation details
1 Check whether the servo software
version was changed recently.
2 Check the repeatability.
3 Check if there is any abnormality in the
unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Chapter 11 Troubleshooting
Investigation results
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Investigation results
The version was changed.
The version was not changed.
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Investigation results
The version was changed.
The version was not changed.
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
11–9
Alarm check timing
f1 f2
–
Remedies
Replace the drive unit.
Investigate item 2.
Replace the drive unit.
Take remedies according to the causes of
the abnormality.
Ex. High
temperature ... Check the
cooling
fan.
Incomplete grounding .... Additionally
Alarm check timing
f1 f2
–
Remedies
Try replacing with the drive unit containing
the original software version.
Investigate item 2.
Replace the drive unit.
Investigate item 3.
Replace the drive unit.
Take remedies according to the causes of
the abnormality.
Ex. High
temperature ... Check the
cooling
fan.
Incomplete grounding .... Additionally
Alarm check timing
f1 f2
–
Remedies
Try replacing with the drive unit containing
the original software version.
Investigate item 2.
Replace the drive unit.
Investigate item 3.
Replace the drive unit.
Take remedies according to the causes of
the abnormality.
Ex. High
temperature ... Check the
cooling
fan.
Incomplete grounding .... Additionally
f3 f4
– –
ground.
f3 f4
ground.
f3 f4
ground.