ABB CL Series, Applications Manual

Page: 256 / 428

Function blocks
253
1SVC 440 795 M1100
Figure: 132: Signal diagram of timing relay, on-delayed
(with and without random switching)
• Range D:
The stop coil is inoperative after the time has elapsed.
• Range E:
The reset coil resets the relay and the contact.
• Range F:
The reset coil resets the time during the timeout sequence.
After the reset coil drops out, the time elapses normally.
Timing relay, off-delayed with and without random
switching
Random switching, with and without retriggering
The contact of the timing relay switches randomly within the
setpoint value range.
Retriggering
When the time is running and the trigger coil is reactivated
or deactivated, the actual value is reset to zero. The set time
of the timing relay is timed out once more.
t
F
D E
t
s
1
2
4
3
t
s
F
t
s