ABB CL Series, Applications Manual

Page: 262 / 428

Function blocks
259
1SVC 440 795 M1100
Figure: 139: Operational diagram timing relay, pulse shaping 2
• Range D:
The reset coil resets the timing relay.
• Range E: The reset coil resets the timing relay. The trigger coil is
still activated after the reset coil has been deactivated and the
time is still running.
Timing relay, synchronous and asynchronous flashing
Time value >I1: Mark time
Time value >I2: Space time
Synchronous (symmetrical) flashing: >I1 equal >I2
Asynchronous flashing: >I1 not equal >I2
Figure: 140: Operational diagram: Timing relay, synchronous
and asynchronous flashing
t
D
E
t t
s
1
2
4
3
t
1
+ t
2
= t
s2
t
s1
t
s1
t
s1
t
s2
t
s2
t
s1
t
s1
t
s2
t
s2
A B
1
2
4
3
t
t
s1
t
s2
C