ABB CL Series Applications Manual page 163

Wiring with the logic relay
160
Timing relay, flashing
You can set the mark-to-space ratio to 1:1 or k 1:1.
Time value I1: mark time
Time value I2: space time
Mark-to-space ratio = 1:1 flashing: S1 equals S2.
Mark-to-space ratio
k
1
2
3
4
t
t t t
s1 s1 s1
t t t
s2 s2 s2
A
Figure 71: Timing relay signal diagram, flashing
1: Trigger coil TTx
2: Stop coil HTx
3: Reset coil RTx
4: Switching contact (n/o contact) Tx
• Range A: The relay flashes for as long as the trigger coil is
activated.
• Range B: The stop coil interrupts the timing out of the set time.
• Range C: The reset coil resets the relay.
1SVC 440 795 M0100
1:1 flashing: S1 not equal S2.
t
t t
s1
s1 s1
t
t t + t = t
s2
s2 1 2 s2
B C