Mitsubishi Electric C70, Руководство по установке

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Appendix 2 Explanation of Alarms
MITSUBISHI CNC
580
(Note) Alarm 6F is detected at the same time other power supply alarms occur.
Alarm No.
6C
Power supply: Main circuit error
An error was detected in charging operation of the main circuit capacitor.
Investigation details Investigation results Remedies CV
1
Check the CHARGE lamp state when the
alarm occurs.
[1] The light of the lamp becomes faint.
[2] An alarm occurs when ready is turned
ON again.
Replace the power supply unit.
The lamp turns ON instantly, but when the
alarm occurs and the contactor turns OFF,
the lamp turns OFF immediately.
Check the investigation item No. 2.
The lamp never turns ON.
Check the investigation item No. 2.
Then replace the unit.
2
Disconnect the power supply unit's PN
terminal block wiring, and measure the
resistance value at 1) and 2) shown
below.
(
Note)
When disconnecting the PN wiring, turn
OFF the power, make sure the CHARGE
lamp has turned OFF at contactor OFF and
then wait at least fifteen minutes before
disconnecting. Do not disconnect
immediately after the power OFF.
1)The power supply unit side is abnormal. Replace the power supply unit.
2)The drive unit side is abnormal.
Disconnect the PN wiring, and then check
the drive unit side.
1) and 2) are both
normal.
Replace the power supply unit.
Alarm No.
6D
Parameter setting error
An error was detected in the parameter sent from the drive unit.
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.
6E
Power supply: Memory error/AD error
An error was detected in the internal memory or A/D converter.
Investigation details Investigation results Remedies CV
1 Check the repeatability.
The alarm occurs each time READY 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.
6F
Power supply error
No power supply is connected to the drive unit, or a communication error was detected.
Investigation details Investigation results Remedies CV
1
Check the LED display on the power supply
unit.
"F" is flickering.
An A/D converter error has occurred.
Check the alarm No. "6E" items.
Another alarm code is flickering. Check items of each alarm No.
"0" is displayed. Check the investigation item No. 2.
"F" is displayed. Check the investigation item No. 2.
"8" is displayed. Check the alarm No. "68" items.
"b", "C", "d" is displayed. Check the investigation item No. 3.
Something else is displayed. Check the alarm No. "68" items.
2 Check the rotary switch setting.
0 or 4 is set. Check the investigation item No. 3.
A value other than the above is set. Correctly set the rotary switch.
3
Check the communication cable (CN4)
connected with the drive unit.
There is a problem with the wiring or shield. Replace the cable.
There is no problem. Replace the unit.
Drive unit
Power supply
unit
P
N
2)
1)
Tester
measure-
ment point
Polarity
Normal
Abnormal
Several 100Ω
Several 100Ω
Short-circuit/∞Ω
Several 100Ω
Several 100Ω
Short-circuit/∞Ω
2)
1)
∞Ω
∞Ω
+
-
P
N
P N
P N
P
N