20
2021-06-09 / V1.0
Installation
Contactors CPP series – Installation and Maintenance Manual
Connecting the coil
ATTENTION
The value of the overvoltage limitation is part of the
magnetic system and must not be modified and in
particular not be short-circuited (e.g. by an external
diode).
X
Make sure that no such diode is used in your
control circuit.
ATTENTION
X
Mechanically secure the control wires to mi-
nimise feedback effects of forces caused by
the wires (e. g. shock, vibrations) acting on the
terminals.
Stand-alone versions
For stand-alone versions a spring clamp terminal block
is provided for the coil control wires. The control wires
for the coil connection must be stripped accordingly (if
necessary, fit with appropriate wire end sleeves).
X
Route the coil control wires (1) to the spring clamp
terminal block (2).
X
Connect the control wires (1).
The polarity (+/-) need not be observed.
X
Check that the coil control wires are correctly in-
stalled
X
Check the routing of the wiring. Wires must not be
squeezed or bent.
X
If applicable bundle and secure the wires using
cable ties.
2
1
Fig. 12: Connecting the coil (stand-alone versions)
Built-in versions
For built-in versions the coil control wires (1) are com-
pletely wired and can be connected directly to the des-
ignated spring clamp terminals on the CP main contac-
tor.
1
Fig. 13: Connecting the coil (built-in versions)
Connecting the earth/ground terminal
(only for stand-alone versions)
X
Connect an earthing cable (2) to the earth termi-
nal (1) which is provided on the mounting flange
of the CPP.
X
Screw the ring terminal of the earthing cable (2)
in place using the terminal screw (3) and suitable
screw locking elements.
-
Schaltbau recommends using Schnorr washers
(or similar).
X
Tighten the earth terminal screw (3) to a torque of
4 - 5 Nm
4 - 5 Nm
2
3
1
Fig. 14: Connecting the earth terminal (only for stand-alone
versions)
