Mitsubishi MELSEC-A A1SCPUC24-R2, User Manual

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36
When constructing a failsafe circuit using ondelay timers only
*2 Since YB0 turns ON and OFF alternatively at 0.5 second
intervals, use a contactless output module (a transistor is used in
the above example).
*3 If an offdelay timer (especially miniature timer) is not available,
construct the failsafe circuit using an ondelay timer shown on the
next page.
*1 Use a solid state relay for the M1 relay.
to to
- +
*1
0 B Y
Externai load
C M
2 M
2 M
M1
M1
2 T
2 M
s 1
On-delay timer
2 T
0V
24V
F B Y
1 B Y
24VDC
T1
MC
L
L
Output module CPU module
s 0.5 s 0.5
0 B Y
0 B Y
M1
s 1
On-delay timer
T1
2 M903
Internal program