Negation (Coil) - ABB CL Series Applications Manual

1SVC 440 795 M0100
I1-------ÅQ1
---------ÄQ1
I1-I2-I3-ÄQ1
i1-i2-i3-ÄQ2

Negation (coil)

Negation means in this case that the coil opens when the
n/o contact is actuated (NOT circuit).
In the CL circuit diagram example, you only change the coil
function
Table 15: Negation
I1 Q1
1 0
0 1
Maintained contact
To energize a relay coil continuously, make a connection of
all contact fields from the coil to the leftmost position.
Table 16: Maintained contact
--- Q1
... 1
Series circuit
Q1 is controlled by a series circuit consisting of three
n/o contacts (AND circuit).
Q2 is controlled by a series circuit consisting of three
n/c contacts (NOR circuit).
In the CL circuit diagram, you can connect up to three n/o or
n/c contacts in series within a rung. Use M marker relays if
you need to connect more than three n/o contacts in series.
Basic circuits
177