SICK MITSUBISHI ELECTRIC MELSEC iQ-F Series - Page 128

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10 TROUBLESHOOTING
10.4 List of Error Codes
3801H to
38FFH
Each of the following bits indicate an error.
38H
Lower bits: Overvoltage/undervoltage monitoring (0: no error, 1: with
error)
• b0: Bit for undervoltage I/O error
• b1: Bit for undervoltage power supply error
• b2: Bit for overvoltage I/O error
• b3: Bit for overvoltage power supply error
Upper bits: Power supply monitoring (0: no error, 1: with error)
• b4: Bit for power supply monitoring and flag monitoring error
• b5: Bit for power supply monitoring error
•b6: 
• b7: Bit for master restarting error due to low voltage power supply
and I/O error
Check the power supply voltage, and reset the power of the whole
system.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
representative.
3901H Module discrepancy
error
Module discrepancy is detected. Check the module version and system requirements.
3902H Configuration change
detected
A configuration change is detected. Review the configuration of the safety extension module.
If the configuration has not been applied (press the ENTER button)
after changing the configuration, apply the configuration.
3909H Setting and diagnostic
error
Setting and diagnostic error occurred. Check the setting and wiring, and reset the power of the whole
system.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
representative.
390AH to
390BH
Setting and diagnostic
error
Setting and diagnostic error occurred. Check the setting and wiring, and reset the power of the whole
system.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
representative.
390CH Module detection error The module cannot be detected. Review the system configuration, and reset the power of the whole
system.
If the error occurs after the power of the whole system is reset, review
the configuration of the safety extension module.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
representative.
390EH Rotary switch setting
error
The setting of the rotary switch is invalid. Check the setting of the rotary switch.
390FH Rotary switch setting
error
The setting of the rotary switch is invalid. Check the setting of the rotary switch.
3910H to
3912H
Setting and diagnostic
error
Setting and diagnostic error occurred. Reset the power of the whole system.
3914H Setting and diagnostic
error
An error occurred in a safety expansion
module.
For details, refer to the error codes of the safety expansion module.
3915H Setting and diagnostic
error
An error occurred in a safety main module. For details, refer to the error codes of the safety main module.
3917H Extension module
configuration error
The configuration of the extension module
is incorrect.
Check the setting, wiring, and system configuration, and reset the
power of the whole system.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
representative.
3919H Setting and diagnostic
error
Setting and diagnostic error occurred. Check the setting, wiring, and system configuration, and reset the
power of the whole system.
If the error is not resolved, there is a possibility that the module is
malfunctioning.
Please contact your local Mitsubishi Electric sales office or
re
presentative.
391AH ENTER button holding
down period excess
error
When applying a setting, the duration for
holding down the ENTER button was too
long.
Apply the setting again. Note that, release the ENTER button within
three seconds after the ERROR LED flashes.
Error code Error name Description Corrective action