MDS-E/EH Series Instruction Manual
7 Troubleshooting
407
IB-1501229-F
Alarm No.
61
Power supply: Power module overcurrent
Overcurrent protection function in the power module of power supply has started its operation.
Investigation details
Investigation results
Remedies
CV
1
Check the state of the operation when the alarm
occurs, and check the repeatability.
The alarm occurs immediately after 200VAC
is supplied or after READY is turned ON.
Replace the unit.
◯
The alarm occurs occasionally during
READY ON.
Check the investigation item No. 3.
The alarm occurs after continuous operation
for a long time.
The unit is hot.
Check the investigation item No. 2.
2
Check the load state of all motors (during stopped).
The total load of all motors exceeds the rated
capacity of the power supply unit.
Lower the motor load and operation
frequency.
◯
The total does not exceed the capacity.
Check the investigation item No. 3.
3
Check the power capacity of the facility.
Check the capacity of the step-down transformer
(KVA).
The power capacity of the facility is
insufficient.
Increase the power capacity of the facility.
◯
The specified power capacity is secured.
Check the investigation item No. 4.
4
Measure the voltage across wires.
Is the voltage 170V or more even when the motor is
accelerating?
The voltage drops to 170V or less
occasionally.
Increase the power capacity of the facility.
◯
The difference of the voltage across wires is
10V or more.
Improve the power phase balance.
The difference of the voltage across wires is
less than 10V.
Check the investigation item No. 5.
5
Check whether there is any device (machine)
causing the power distortion.
Abnormal noise is heard from an AC reactor
when stopping at the servo ON.
Improve the source of the distortion.
For example, when abnormal noise is heard
from another machine that is in operation,
move the wiring to the power which is far
from the machine's power supply.
◯
Abnormal noise is not heard.
Check the investigation item No. 6.
6
Check if there is any abnormality in the unit's
ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
Alarm No.
62
Power supply: Frequency error
The input power supply frequency increased above the specification range.
Investigation details
Investigation results
Remedies
CV
1
Check the state of the operation when the alarm
occurs, and check the repeatability.
The alarm occurs each time immediately
after the power is turned ON. Or, the alarm
occurs occasionally regardless of the
operation state.
Check the investigation item No. 2.
◯
The alarm occurs only while the motor is
accelerating/decelerating.
Check the investigation item No. 3.
2
Measure the power voltage waveform during
normal operation.
The frequency is deviated from 50Hz±3% or
60Hz±3%.
Review the power facilities.
◯
The voltage waveform dips at some sections.
Improve the source of the distortion.
Install an AC reactor.
There is no problem.
Check the investigation item No. 4.
3
Measure the power voltage when the motor is
accelerating/decelerating.
The frequency greatly fluctuates during
acceleration/deceleration.
Review the power facilities.
◯
The voltage waveform during deceleration
dips in some sections.
Improve the source of the distortion.
Install an AC reactor.
There is no problem.
Check the investigation item No. 4.
4
Check if there is any abnormality in the unit's
ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
Alarm No.
66
Power supply: Process error
An error occurred in the process cycle.
Investigation details
Investigation results
Remedies
CV
1
Check the repeatability.
The alarm occurs each time after the power
is turned ON.
Replace the unit.
The alarm occurs occasionally.
Check the investigation item No. 2.
2
Check if there is any abnormality in the unit's
ambient environment.
(Ex. Noise, grounding, etc.)
Take remedies according to the causes of the abnormality in the ambient environment.
Alarm No.
67
Power supply: Phase interruption
An open-phase condition was detected in input power supply circuit.
Investigation details
Investigation results
Remedies
CV
1
Check the voltage for each input phase.
There are phases with no voltage.
Correct the power supply.
◯
There is no problem.
Check the investigation item No. 2.
2
Check the alarm No. "71" items.
◯
Summary of Contents for MDS-E
Page 1: ......
Page 3: ......
Page 15: ......
Page 17: ......
Page 19: ......
Page 21: ......
Page 31: ......
Page 32: ...1 IB 1501229 F 1 Installation ...
Page 76: ...45 IB 1501229 F 2 Wiring and Connection ...
Page 132: ...101 IB 1501229 F 3 Safety Function ...
Page 142: ...111 IB 1501229 F 4 Setup ...
Page 277: ...MDS E EH Series Instruction Manual 4 Setup 246 IB 1501229 F ...
Page 278: ...247 IB 1501229 F 5 Servo Adjustment ...
Page 351: ...MDS E EH Series Instruction Manual 5 Servo Adjustment 320 IB 1501229 F ...
Page 352: ...321 IB 1501229 F 6 Spindle Adjustment ...
Page 404: ...373 IB 1501229 F 7 Troubleshooting ...
Page 455: ...MDS E EH Series Instruction Manual 7 Troubleshooting 424 IB 1501229 F ...
Page 456: ...425 IB 1501229 F 8 Maintenance ...
Page 475: ...MDS E EH Series Instruction Manual 8 Maintenance 444 IB 1501229 F ...
Page 476: ...445 IB 1501229 F 9 Power Backup System ...
Page 494: ...463 IB 1501229 F 10 Appx 1 Cable and Connector Assembly ...
Page 504: ...473 IB 1501229 F 11 Appx 2 D A Output Specifications for Drive Unit ...
Page 514: ...483 IB 1501229 F 12 Appx 3 Protection Function ...
Page 523: ...MDS E EH Series Instruction Manual 12 Appx 3 Protection Function 492 IB 1501229 F ...
Page 524: ...493 IB 1501229 F 13 Appx 4 Compliance to EC Directives ...
Page 528: ...497 IB 1501229 F 14 Appx 5 EMC Installation Guidelines ...
Page 540: ...509 IB 1501229 F 15 Appx 6 Higher Harmonic Suppression Measure Guidelines ...
Page 550: ......
Page 554: ......