Parallel Circuit Operating Like A Series Connection Of N/C Contacts - ABB CL Series Applications Manual

Wiring with the logic relay
I1u------ÅQ1
I2s
I3s
I4s
I5k
I1-i2u---ÄQ1
i1-I2k
180
Parallel circuit operating like a series connection of
n/c contacts
A series circuit with more than three contacts (n/c contacts)
can be implemented with a parallel connection of
n/o contacts on a negated coil.
In the CL circuit diagram you can switch as many rungs in
parallel as you have rungs available.
Table 20: Parallel connection of n/o contacts on a negated coil
I1 I2 I3
0 0 0
0 0 0
0 0 0
0 0 0
0 0 1
0 0 1
0 0 1
0 0 1
0 1 0
0 1 0
... ... ...
... ... ...
1 1 1
Two-way circuit
A two-way circuit is made in the logic relay using two series
connections that are combined to form a parallel circuit
(XOR).
An XOR circuit stands for an "Exclusive Or" circuit. The coil
is only energized if one contact is activated.
1SVC 440 795 M0100
I4 I5 Q1
0 0 1
0 1 0
1 0 0
1 1 0
0 0 0
0 1 0
1 0 0
1 1 0
0 0 0
0 1 0
... ... 0
... ... 0
1 1 0