Details Of Alarm 4D - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
7 Troubleshooting

7.3.6 Details of Alarm 4D

If dual signal error (4D) occurs, the sub-number and the axis name will appear on the NC Diagnosis screen as shown
below. Take measures for each sub-number referring to the following table.
S03 Servo error
Sub-
Name
No.
1 Power shutoff error
2 Illegal power shutoff error
3 STO signal mismatch error
Safety communication:
15
Communication error 1
Safety communication: Initial
16
communication error 1
17 Voltage diagnosis error
19 DRAM diagnosis error
21 Control process error
Safety encoder: Initial
23
communication error 1
24 PCB error
25 Synchronization error
26 Flash ROM diagnosis error
Safety encoder:
33
Communication error 1
Safety encoder: Diagnosis error
34
1
Safety encoder: Diagnosis error
35
2
Safety encoder: Diagnosis error
36
3
Safety encoder: Diagnosis error
37
4
Non-safety encoder: Position
39 feedback fixation diagnosis
error
40 Safety encoder: Thermal error
Safety communication:
53 Transmission interval mismatch
error
IB-1501229-F
004D. □□□ ○○
□□□ : Sub-number
○○ : Axis name
Alarm details
Either of the STO signals entered an
input state while the STO function is
disabled.
Either of the STO signals entered an
input state during servo ON
command or during deceleration and
stop with the STO function enabled.
Input states of two STO signals were
mismatched while the STO function
is enabled.
A receiving error was detected in the
safety communication.
A receiving error was detected in the
initial communication for the safety
communication.
A power error was detected in the
safety function.
A DRAM error was detected in the
safety function.
An error was detected in the status of
software execution for the safety
function.
An error was detected in the initial
communication with a safety
encoder.
A PCB error was detected in the
safety function.
A synchronization error was detected
in the safety function.
A Flash ROM error was detected in
the safety function.
An error was detected in the
communication with a safety
encoder.
An error was detected in the encoder.
An error was detected in the encoder.
An error was detected in the encoder.
An error was detected in the encoder.
The position feedback from the non-
safety encoder remains unchanged.
The safety encoder detected a
thermal error.
An error was detected in the
transmission interval setting sent
from the NC.
422
Investigation details
Check if the connector to disable
STO on the front of the drive unit is
loosened.
No abnormality is found in particular.
Check if the STO sequence on the
NC side (safety ladder side) issues
the STO command before the servo
OFF command.
No abnormality is found in particular.
Check if the two STO output timings
of the remote I/O unit are matched.
No abnormality is found in particular.
Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
No abnormality is found in particular.
Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
No abnormality is found in particular.
The alarm is on the drive unit side.
The alarm is on the drive unit side.
The alarm is on the drive unit side.
Turn the power OFF, and check the
encoder cable connection with a
tester.
No abnormality is found in particular.
The alarm is on the drive unit side.
Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
No abnormality is found in particular.
The alarm is on the drive unit side.
Turn the power OFF, and check the
encoder cable connection with a
tester.
No abnormality is found in particular.
The alarm is on the encoder side.
The alarm is on the encoder side.
The alarm is on the encoder side.
The alarm is on the encoder side.
Check the safety parameters.
The alarm is on the encoder side.
The alarm is on the encoder side.
Check the safety parameters.
Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
No abnormality is found in particular.
Remedies
Connect the connector to disable
STO correctly.
Replace the drive unit.
Set correctly.
Replace the drive unit.
Set correctly.
Replace the drive unit.
Take remedies according to the
causes of the abnormality in the
ambient environment.
Replace the drive unit.
Take remedies according to the
causes of the abnormality in the
ambient environment.
Replace the drive unit.
Replace the drive unit.
Replace the drive unit.
Replace the drive unit.
Replace the encoder cable.
Replace the encoder.
Replace the drive unit.
Take remedies according to the
causes of the abnormality in the
ambient environment.
Replace the drive unit.
Replace the drive unit.
Replace the encoder cable.
Replace the encoder.
Replace the encoder.
Replace the encoder.
Replace the encoder.
Replace the encoder.
Set correctly.
Replace the encoder.
Replace the encoder.
Set correctly.
Take remedies according to the
causes of the abnormality in the
ambient environment.
Replace the drive unit.