Error Code List - Mitsubishi Electric MELSEC QS SERIES User Manual

9
TROUBLESHOOTING

9.5 Error Code List

The safety remote I/O module sends the error information to the safety CPU module via a
safety master module when the moderate error
of the programmable controller.
The error codes that the safety remote I/O module sends are listed in Table9.6.
For reading an error code, refer to Section 9.4.
*1
9
- 18 9.5 Error Code List
Safety remote I/O module error codes are classified into minor, moderate, and
major errors as shown below.
However, minor error is not applied to the safety remote I/O module status.
Minor error: Errors that may allow the safety remote I/O module to maintain the
•
safety functions.
Moderate Errors that may cause the safety remote I/O module to stop the
•
error: safety functions with error detection enabled.
Major error: Errors that may cause the safety remote I/O module to stop the
•
safety functions with error detection disabled.
All output points will be OFF when moderate errors or major errors occur.
POINT
If an error 450 not described in Table 9.6 Error code list occurs, the following items
may have a problem:
• Operating ambient environment
• Power supply voltage
• Installing or wiring condition
• Module
Refer to Table 9.5 below to check if there are problems with the items above.
Table9.5 Checking the error cause
Item to check
Check if the operating ambient environment meets the general specifications.
Operating ambient
environment
(
Check if the power supply voltage supplied for the safety remote I/O module is
within the range described in the module power supply voltage in the
Power supply voltage
performance specifications. (
Check if:
Installing or wiring
condition
If the same error persists even after the troubleshooting, the safety remote I/O
module may be in failure.
Module
Replace the module. (
Follow the troubleshooting instructions above according to the error cause. If the
module is in failure or the cause is not clear, consult your local Mitsubishi service
center or representative, explaining a detailed description of the problem.
*1
Section 3.1)
• the module mounting screws are not loosen.
• the two-piece terminal block mounting screws are not loosen.
• there is no dust or foreign matter in the terminal block.
• the terminal screws are not loosen.
• the solderless terminals are not positioned too close.
Section 9.1, Section 9.2)
occurs at power ON or during operation
Description
Section 3.2)