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

MDS-E/EH Series Instruction Manual
9 Power Backup System

9.4.4 Troubleshooting for Each Alarm No.

Alarm No.
Watchdog :
8
The system does not operate correctly.
Investigation details
Check whether the PFU software version was
1
changed recently.
2 Check the reproducibility.
Check if there is any abnormality in the unit's
3 ambient environment. (Ex. Ambient temperature,
noise, grounding)
Alarm No.
Memory error 1 :
10
An internal memory error was detected during the power ON self-check.
Investigation details
1 Check the reproducibility.
Check if there is any abnormality in the unit's
2 ambient environment. (Ex. Ambient temperature,
noise, grounding)
Alarm No.
Memory error 2 :
11
An error was detected in the internal clock signal.
Investigation details
1 Check the investigation items of the alarm No. 10.
Alarm No.
Unit ID error :
12
An error was detected in the internal hardware ID.
Investigation details
1 Check the investigation items of the alarm No. 10.
Alarm No.
A/D converter error:
13
An error was detected in the A/D converter, which is used for detecting current and voltage.
Investigation details
1 Check the investigation items of the alarm No. 10.
Alarm No.
Function selection error :
18
An error was detected in the settings of DIP or rotary switches.
Investigation details
Check the settings of switches on the upper part of
1
the unit.
Alarm No.
External emergency stop setting error :
19
The external emergency stop cancel state was detected although the external emergency stop input is set as disabled.
Investigation details
Check for a wiring error in connection to the DI1
1
terminal of CN43.
2 Check the reproducibility.
Check if there is any abnormality in the unit's
3 ambient environment. (Ex. Ambient temperature,
noise, grounding)
IB-1501229-F
Investigation results
Changed.
Not changed.
The error is always repeated.
The state returns to normal once, but the error
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 the error
occurs sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient environment.
Investigation results
Investigation results
Investigation results
Investigation results
The switch setting is wrong (disabled setting).
The switch settings are correct.
Investigation results
There is an error in wiring.
There is no error in wiring.
The error is always repeated.
The state returns to normal once, but the error
occurs sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient environment.
458
Remedies
Change the S/W version back to the original.
Check the investigation item No. 2.
Replace the power backup unit.
Check the investigation item No. 3.
Remedies
Replace the power backup unit.
Check the investigation item No. 2.
Remedies
Remedies
Remedies
Remedies
Set the switches correctly.
Replace the power backup unit.
Remedies
Perform wiring correctly.
Check the investigation item No. 2.
Replace the power backup unit.
Check the investigation item No. 3.