Mitsubishi Electric MDS-E Series User Manual

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

Mitsubishi Electric MDS-E Series Specifications

General

Brand	Mitsubishi Electric
Model	MDS-E Series
Category	Control Systems
Language	English