Mitsubishi Q2ACPU User Manual page 298

19. LOADING AND INSTALLATION
When constructing a fail-safe circuit using on delay timers only
Internal program
SM412
YB0
YB0
0.5s 0.5s
CPU module
*4 Use a solid state relay for the M1 relay.
19 - 6
YB0
M1
M1
M2
T2
External load
YB1
L
YBF L
24V
- +
0V
T1
Output
module
ON delay timer
T1
1s
*4
M1
ON delay timer
T2
1s
M2
MC
24VDC
M2
MC