Mitsubishi Electric MELSEC iQ-R Series Safety Manual page 136

(0) to (5) This is a circuit to release the interlock when a communication or I/O error occurs on the safety remote I/O station.
(8) This is a circuit to convert the reset input bit of M+SF_EDM_R.
(16) to (22) This is a circuit to convert the i_bMutingEnable input bit of M+SF_MUTES_R.
(31) This is a circuit to control muting. The safety FB is enabled by activating the reset switch after the system is powered on or after the light curtain
is blocked and the safety output is turned off.
(77) This is a circuit to monitor the contact welding in the electromagnetic contactors. The safety output of the safety FB is turned on again by
activating the start switch after the enable status is confirmed. Activate the reset switch to clear an error occurred in the safety FB.
For details on the safety FBs, refer to the following.
 MELSEC iQ-R Safety Function Block Reference
In this example, an error occurs on the safety remote station when a disconnection occurs in the muting lamp wiring.
To avoid an error in the safety remote station due to this kind of error, perform the following: Set the output dark test execution
setting as "1: Do not perform" for the output where the muting lamp is connected: Use a muting lamp that can output its status
(turns on at normal and turns off if an error occurs): Connect a state output signal to the input of the safety FB,
i_bS_MutingLamp.
This is an example for performing sequential muting with four muting sensors. To perform parallel muting, use
M+SF_MUTE2_R or M+SF_MUTEP_R instead of M+SF_MUTES_R.
5 SAFETY APPLICATION CONFIGURATION EXAMPLES
134
5.1 System Configured by a Safety CPU