ABB CL Series Applications Manual page 162

1SVC 440 795 M0100
Timing relay, single pulse
1
2
3
4
t t
s s
A B
Figure 69: Signal diagram of timing relay, single pulse 1
1: Trigger coil TTx
2: Stop coil HTx
3: Reset coil RTx
4: Switching contact (n/o contact) Tx
• Range A: The trigger signal is short and is lengthened
• Range B: The trigger signal is longer than the set time.
• Range C: The stop coil interrupts the timing out of the set time.
1
2
3
4
t
D
Figure 70: Signal 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 relays
t + t = t
1 2 s
C
t t
s
E
159