Function blocks
For more information visit:
www.EatonElectrical.com
MN05013005E
265
Figure 136: Signal diagram of off-delayed timing relay
(with/without random switching, with/without
retriggering)
• Range E:
The Trigger coil drops out twice. The set time
t
s
consists of
t
1
plus
t
2
(switch function not retriggerable).
• Range F:
The Trigger coil drops out twice. The actual time t
1
is cleared and
the set time t
s
elapses completely (retriggerable switch function).
Timing relay, on-delayed and off-delayed with and
without random switching
Time value >I1: On-delayed time
Time value >I2: Off-delayed time
Random switching
The contact of the timing relay switches randomly within the
setpoint value range.
E
t
1
+
t
2
=
t
s
1
2
4
3
t
s
F
t
1