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4 Wiring  with
4.10 Timing Relay
Operating instructions 05/10 MN05013003Z-EN www.eaton.com
129
4.10.5.3 Timing relay, on delayed and off delayed with and without random switching
Time value I1: on-delay time
Time value I2: off-delay time
Operating mode with Random switching: The contact of the timing relay
switches randomly within the setpoint value ranges.
Figure 67: Operational diagrams timing relay, on and off delayed 1
1: trigger coil TTx
2: Stop coil HTx
3: Reset coil RTx
4: Switch contact (N/O) Tx
ts1
: pick-up time
ts2
: drop-out time
• Range A: The relay processes the two times without any interruption.
• Range B: The trigger coil drops out before the on-delay is reached.
• Range C: The stop coil stops the timeout of the on-delay.
• Range D: The stop coil has no effect in this range.
The description of the retriggering during the on-delay is provided on
￫ Chapter 4 "Wiring  with“, page 127
Figure 68: Operational diagrams timing relay, on and off delayed 2
• Range E: The stop coil stops the timeout of the off-delay.
• Range F: The Reset coil resets the relay after the on delay has elapsed
• Range G: After the reset coil is activated, the internal time counter is reset. The switching contact
remains switched off. The function relay waits for a new trigger pulse.
A B
C
1
2
4
3
D
t t
s1
t
s2
t
s2
t
s1
t
s2
t
1
+ t
2
= t
s1
E F
t
1
+ t
2
= t
s2
G
1
2
4
3
t t
s1
t
s1