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App. - 10
Appendix 4.4 Off delay timer
MELSEC-Q does not provide off delay timers. Configure an off delay timer as
follows.
(1) The timer T6 starts operating when X5 is turned off.
T6
Y70
0
T6
K8
Y70
X5
6
Y70
X5
Coil T6
Normally closed
contact T6
Set time limit
0.8sec.
X5
Y70
(2) Turning on X5 momentarily sets the operation ready.
The timer T8 starts operating when X6 is momentarily turned on.
Y71
X5
0
Y71
T8
T8
X6
4
M45
K41
M45
Y71
Coil T8, M45
Normally closed
contact T8
4.1sec
X6
Y71
X5
Set time limit
(Note) The above ladder operates as an off delay ladder by momentarily turning on
inputs X5 and X6.
M45 is equivalent to a momentary contact of T8.