Mitsubishi Q2ASCPU - Page 41

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When constructing a failsafe circuit using ondelay timers only
Internal program
SM412
T1
On-delay timer
1s
M1
YB0
YB0
0.5s0.5s
CPU module Output module
L
L
MC
T1
24VDC
YB1
YBF
24V
0V
T2
On-delay timer
1s
M2
T2
M1
M1
M2
M2
MC
Externai load
YB0
*1
+-
to
to
*1: Use a solid state relay for the M1 relay.