Mitsubishi Electric MELSEC iQ-RX40NC6B Application User's Manual page 203

Error code Error name
1500H Safety I/O HOLD time exceeded
error
2002H Output read-back error
2003H Output dark test error
3001H Hardware error
3010H External power supply error
3020H Safety mutual monitoring error
3050H Safety parameter error
3060H Module configuration error
Error description and cause
Duration of I/O HOLD state exceeded the set
time.
The discrepancy between an output read-back
value and an output value was detected.
During an output dark test, test pulses were not
detected.
A hardware error was detected.
An error was detected on the external power
supply.
An error was detected in the counterpart device
of mutual monitoring.
An error of safety parameter was detected at
the startup of the system.
An error was detected in the module
configuration.
Action
• Check that no error occurred on the switching of
systems incorporating SIL2 Process CPUs.
• Check whether an error occurred in communications
with a SIL2 Process CPU.
• Set "Not used" for "Wiring output selection" of an
unused output terminal.
• Check for a terminal with the error using Output
read-back error detection state (Un\G1536), and
review and adjust connected devices and wiring.
(Page 215 Output read-back error detection
state)
• If the same error occurs again, there may be an
influence from noise or a hardware error. Please
consult your local Mitsubishi representative.
• Set "Not used" for "Wiring output selection" of an
unused output terminal.
• Check for a terminal with the error using Output dark
test error detection state (Un\G1540), and review
and adjust connected devices and wiring.
(Page 215 Output dark test error detection
state)
• If the same error occurs again, there may be an
influence from noise or a hardware error. Please
consult your local Mitsubishi representative.
There may be an influence from noise or a hardware
error. If the same error occurs again even after
measures have been taken against noise, the module
may be in failure. Please consult your local Mitsubishi
representative.
• Review and adjust connected devices, wiring, and
voltage.
• Power on the external power supply at the same
timing of power-on of the module power supply.
• If the same error occurs again, the possible cause is
a module failure. Please consult your local
Mitsubishi representative.
A moderate error was detected in the counterpart
device of mutual monitoring. Check the error code on
the counterpart device side, and take an action
according to the error code.
The possible cause is a failure of safety parameter
write. Write the safety parameter to the module again
with GX Works3. If the same error occurs again, the
possible cause is a module failure. Please consult
your local Mitsubishi representative.
• Check that the mounting position of each module is
correct.
• The I/O module with diagnostic functions not
supporting SIL2 mode may be mounted as a pair.
Mount the I/O module that supports SIL2 mode.
• If the same error occurs again, the possible cause is
a module failure. Please consult your local
Mitsubishi representative.
13 TROUBLESHOOTING
13.5 List of Error Codes
13
201