Mitsubishi Electric MDS-EX-CV Series Specifications And Instruction Manual page 82

MDS-EX-CV/CVH Series Specifications and Instruction Manual
11 Troubleshooting
11.3 Troubleshooting
Power supply: H/W error/AD error
Alarm No.
6E
An error was detected in the internal memory or A/D converter.
Investigation details
1 Check if the alarm repeats.
2 Check if there is any abnormality in the unit's am-
bient environment.
(Ex. Noise, grounding, etc.)
Power supply error:
Alarm No.
No power supply is connected to the drive unit, or a communication error was detected. Or, incorrect wiring of
6F
the power supply wire was detected.
Investigation details
1 Check the time it takes for the unit power to
change from OFF to ON.
2 Check the LED display on the power supply unit. "F" is flickering.
3 Check the rotary switch setting.
4 Check the communication cable (CN4) connect-
ed with the drive unit.
(*) Alarm 6F is detected at the same time other power supply alarms occur.
Power supply: External emergency stop error
Alarm No.
70
A mismatch of the external emergency stop input and NC emergency stop input continued for 30 seconds.
Investigation details
1 Check the connection between external emer-
gency stop and NC emergency stop.
2 Check if there is any abnormality in the unit's am-
bient environment.
Investigation results
The alarm occurs each time READY is
turned ON.
The alarm occurs occasionally.
Take remedies according to the causes of the abnormality in the ambient environment.
Investigation results
Within 3 seconds
More than 3 seconds
Another alarm code is flickering.
"0" is displayed.
"F" is displayed.
"8" is displayed.
"b", "C", "d" is displayed.
Something else is displayed.
0 or 4 is set.
A value other than the above is set.
There is a problem with the wiring or shield. Replace the cable.
There is no problem.
Investigation results
Not wired correctly.
No abnormality is found in particular.
The grounding is incomplete.
63
Remedies
Replace the unit.
Check the investigation item No. 2.
Remedies
Ensure that there are 3 seconds or more
for the power to change from OFF to ON.
Check the investigation item No. 2.
An A/D converter error has occurred.
Check the alarm No. "6E" items.
Check items of each alarm No.
Check the investigation item No. 3.
Check the investigation item No. 3.
Check the alarm No. "68" items.
Check the investigation item No. 4.
Check the alarm No. "68" items.
Check the investigation item No. 4.
Correctly set the rotary switch.
Replace the unit.
Remedies
Correctly wire the external emergency stop
and NC emergency stop.
Replace the drive unit.
Take remedies according to the causes of
the abnormality. Additionally ground and
review.
IB-1501700-A