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Troubleshooting By Symptom - Mitsubishi Electric MELSEC iQ-R Series User Manual

Cc-link ie field network waterproof/dustproof remote i/o module (with safety functions).
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10.5

Troubleshooting by Symptom

This section describes troubleshooting for each phenomenon.
Perform the troubleshooting by symptom when the safety remote I/O module does not operate properly with no error. If an
error occurs in the safety remote I/O module, identify the cause of the error using the engineering tool.
Check the following items in the order from the top.
When the ON/OFF status of an external input cannot be read
Check item
Is the SAFETY LED on?
Is the corresponding I/O LED of the safety
remote I/O module on when an external input
device is on?
Is the setting of the refresh device correct?
Is there any incorrect setting in the wiring
selection of input?
When the ON/OFF status of an external output cannot be changed
Check item
Is the SAFETY LED on?
Is the corresponding I/O LED of the safety
remote I/O module on?
Is the setting of the refresh device correct?
Is there any incorrect setting in the wiring
selection of output?
When External output ON signal intermittently turns off
Check item
Is an output dark test being executed?
Action
When the SAFETY LED is not on, the safety module validation has not been performed or the Safety CPU
is in the safety station interlock status. Take the following actions.
• Perform the safety module validation. For the safety module validation, refer to the following.
Page 67 Module parameter setting procedure
• Fully check the wiring and connection, and cancel the safety station interlock of the Safety CPU. For the
safety station interlock, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
If the LED does not turn on, there is a problem on the input wiring. Check the wiring confirming that the
input wiring is not disconnected or short-circuited, or the voltage of the input signal is correct. For the rated
input voltage range, refer to the following.
Page 20 Performance Specifications
Refer to the following as well.
Page 91 Troubleshooting for input circuit
Check and correct the device setting of the safety communication setting so that the setting of the refresh
device matches the setting in the program. For details on the device setting of the safety communication
setting, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
 MELSEC iQ-R Simple Motion Module User's Manual (Network)
Review the settings in the wiring selection of input.
Page 45 Input wiring selection function
Action
When the SAFETY LED is not on, the safety module validation has not been performed or the Safety CPU
is in the safety station interlock status. Take the following actions.
• Perform the safety module validation. For the safety module validation, refer to the following.
Page 67 Module parameter setting procedure
• Fully check the wiring and connection, and cancel the safety station interlock of the Safety CPU. For the
safety station interlock, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
If the LED turns on, there is a problem on the output wiring. Check the wiring confirming that the output
wiring is not disconnected or short-circuited. Refer to the following as well.
Page 93 Troubleshooting for output circuit
Check and correct the refresh parameter so that the setting of the refresh device matches the setting in the
program. For the setting of the refresh parameter, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
 MELSEC iQ-R Simple Motion Module User's Manual (Network)
Review the settings in the wiring selection of output.
Page 50 Output wiring selection function
Action
Check the specifications of the safety devices used, and review the setting of the output dark test pulse
OFF time.
Page 57 Output dark test function
10 TROUBLESHOOTING
10.5 Troubleshooting by Symptom
10
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