Mitsubishi Electric R60AD8-G User Manual page 234

12.
Checking LEDs on the SIL2 Process CPU side
Check that the LED status of each module is as follows. The CARD READY LED turns on or off depending on whether the SD
memory card is installed.
• Control system
*1
• Standby system
*1 For the redundant master station system, the MST LED of the standby system master/local module flashes.
The following LEDs turn on when an error occurs. Use the engineering tool to check details of the error and remove the error
cause.
• SIL2 Process CPU: ERROR LED ( MELSEC iQ-R CPU Module User's Manual (Startup))
• SIL2 function module: ERROR LED ( MELSEC iQ-R CPU Module User's Manual (Application))
• Redundant function module: ERR LED, L ERR LED ( MELSEC iQ-R CPU Module User's Manual (Application))
• Master/local module: ERR LED, L ERR LED ( MELSEC iQ-R Ethernet/CC-Link IE User's Manual (Startup))
Enabling modules
1.
Safety module operation
Check that the system is powered on the SIL2 Process CPU side and the remote head module side, and use "Safety Module
Operation" of the engineering tool to enable the modules set to SIL2 mode. ( Page 258 Safety module operation)
2.
Powering off the system
After enabling the modules, power off the system on the SIL2 Process CPU side and the remote head module side.
3.
Restarting the system
Set the RUN/STOP/RESET switch for the SIL2 Process CPU in both systems and for the remote head module to RUN, and
turn the power of the systems on.
7 PROCEDURES BEFORE OPERATION
232