When The S Mode Led Flashes Or Turns Off - Mitsubishi Electric R60AD8-G User Manual

When the S MODE LED flashes or turns off

When flashing (1s cycles)
Check item
Check whether the remote head module is in the STOP state.
Check whether [Import Setting] was performed to the project written to the
remote head module, by using "Safety Communication Setting" of the SIL2
Process CPU project.
Check whether the status is in "Safety station interlock status".
Check whether the R60AD8-G is in safety module disabled state.
Check whether the wiring between the master station and the remote head
module is correct.
Check whether momentary power failure has occurred in the remote head
module.
(Check whether power failure (error code: 1000H) has occurred in the remote
head module. ( MELSEC iQ-R CC-Link IE Field Network Remote Head
Module User's Manual (Application)))
*1 For details on the safety special register (2nd module or later), refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
Changing the module parameter of the R60AD8-G and writing it to the remote head module causes a change
in the safety parameter, and thus the R60AD8-G automatically shifts to the safety module disabled state. To
set the R60AD8-G to the safety module enabled state again, it is required to perform [Import Setting] to the
changed project of the remote head module by using "Safety Communication Setting" of the CPU module
project, and then to enable the safety module.
When flashing (400ms cycles)
Check item
Check whether the module position check has been executed.
When turning off
Check item
Check whether the R60AD8-G in the module configuration diagram is SIL2
mode.
Check whether the project was written to the remote head module.
Corrective action
Check the RUN/STOP/RESET switch for the remote head module and if it is
set to STOP, change it to RUN.
Save the project that was written to the remote head module. In addition,
follow the steps below again starting from "Safety communication setting".
Page 230 Procedure on the SIL2 Process CPU side
Monitor the 'Interlock status of each safety connection (1st module)'
*1
(SA\SD1232 to SA\SD1239) , and check the interlock status of the R60AD8-
G.
When the interlock status is in "Interlocked", use the 'Interlock release request
for each safety connection (1st module)' (SA\SD1240 to SA\SD1247)
corresponding to the R60AD8-G to clear the interlock status of the R60AD8-G.
For details on the safety special register, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
Enable the safety module. If enabling the safety module fails, follow the steps
below again starting from "Safety communication setting".
Page 230 Procedure on the SIL2 Process CPU side
Check the wiring between the master station and the remote head module.
When momentary power failure occurs in the remote head module, safety
communications may stop if the value of "Transmission interval monitoring
time" of the master station or the R60AD8-G is smaller than the value stated in
the precautions regarding momentary power failure of the remote head
module.
Follow the procedure below as necessary.
• Take measures against momentary power failure. ( MELSEC iQ-R
Module Configuration Manual)
• Check "Transmission interval monitoring time" of the R60AD8-G. (
Page 278 "Transmission interval monitoring time")
• Check "Transmission interval monitoring time" of the master station. (
MELSEC iQ-R CC-Link IE Field Network User's Manual (Application))
For precautions regarding momentary power failure of the remote head
module, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network Remote Head Module User's
Manual (Application)
Corrective action
With "Safety Module Operation" in the engineering tool, select the relevant
module and click [S MODE LED Stop Flashing] button.
Corrective action
In the module configuration diagram of GX Works3, check that the two
R60AD8-G modules are "R60AD8-G (S2M)" and "R60AD8-G (S2S)".
If no project was written to the remote head module, follow the steps below
again starting from "Writing to the remote head module".
Page 229 Procedure on the remote head module side
14.3 Troubleshooting by Symptom
*1
14 TROUBLESHOOTING
309
14