Working with contacts and relays
For more information visit:
www.EatonElectrical.com
MN05013005E
153
A coil is automatically switched off if the power fails and if
STOP mode is active. Exception: Retentive coils retain signal
1 (see
Section “Retention”, Page 378).
“Set”
S
and “Reset”
R
coil function
The “Set”
S
and “Reset”
R
coil functions are normally used
in pairs.
The relay picks up when the coil is set (A) and remains in this
state until it is reset (B) by the coil function.
The supply voltage is switched off (C), the coil does not have
a retentive effect.
Figure 91: Signal diagram of “Set” and “Reset”
If both coils are triggered at the same time, priority is given to
the coil in the circuit diagram with the higher rung number.
This is shown in the above signal diagram in section B.
Figure 92: Simultaneous triggering of
Q 01
In the example above, the reset coil has priority with
simultaneous triggering of the set and reset coils.
on
on
S
R
on
A
B
C
I 05---------------------------S Q 01
I 10---------------------------R Q 01
