Troubleshooting For Each Alarm No - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
7 Troubleshooting

7.3.2 Troubleshooting for Each Alarm No.

Alarm No.
Insufficient voltage
10
Insufficient bus voltage was detected in main circuit.
Investigation details
1 Check the timing when the alarm occurs.
Did the external contactor turn ON at the READY
2
ON?
3 Check the wiring of contactor excitation circuit.
Check the input voltage of the drive unit by a tester.
4
(Voltage between L1 and L2, L2 and L3, L1 and L3)
Alarm No.
Axis selection error
11
The axis selection rotary switch is incorrectly set.
Investigation details
Check the setting of the axis selection switch (rotary
1
switch) on the top of the unit.
Alarm No.
Memory error 1
12
Hardware error (a CPU or an internal memory error was detected during the power ON self-check.
Investigation details
1 Check the repeatability.
Check if there is any abnormality in the unit's
2 ambient environment.
(Ex. Ambient temperature, noise, grounding)
Software processing error 1
Alarm No.
An error was detected in the software execution state.
13
Software processing has not finished within the specified time.
Investigation details
1 Check the repeatability.
Check if there is any abnormality in the unit's
2 ambient environment.
(Ex. Ambient temperature, noise, grounding)
Alarm No.
Software processing error 2
14
The current processor is not operating correctly.
Investigation details
1 Check the repeatability.
Check if there is any abnormality in the unit's
2 ambient environment.
(Ex. Ambient temperature, noise, grounding)
IB-1501229-F
Investigation results
The moment of READY ON
During operation
The external contactor did not turn ON.
The external contactor turned ON,
but the alarm occurred immediately.
The wiring is correct.
The wiring is not correct.
The input voltage is normal.
The input voltage is abnormal.
The measured voltage fluctuates.
Investigation results
The same axis No. is set for the L and M
axes.
The value is duplicated with other axis.
The axis No. is correctly set.
Investigation results
The error is always repeated.
The state returns to normal once, but occurs
sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient environment.
Investigation results
The error is always repeated.
The state returns to normal once, but occurs
sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient environment.
[1] Machine grounding check
Investigation results
The error is always repeated.
The state returns to normal once, but occurs
sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient environment.
388
Remedies
Check the investigation item No. 2.
Increase the power supply capacity (KVA).
Check the investigation item No. 3.
Check the investigation item No. 4.
Replace the contactor.
Rewire.
Replace the drive unit.
Increase the power supply capacity (KVA).
Replace the power supply.
Remedies
Correctly set the axis No.
0 = No. 1 axis, 1 = No. 2 axis, ...
Correctly set the axis No.
0 = No. 1 axis, 1 = No. 2 axis, ...
Replace the drive unit.
Remedies
Replace the drive unit.
Check the investigation item No. 2.
Remedies
Replace the drive unit.
Check the investigation item No. 2.
Remedies
Replace the drive unit.
Check the investigation item No. 2.
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