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70 WILO SE 01/2013
NOTE:
The maximum number of switching operations per
hour specified in the table for each power is deter-
mined by the pump motor and must not be
exceeded (adapt the parameter settings of the
connection accordingly; see follow-up times, for
example).
• Fuse on mains side in accordance with the infor-
mation in the wiring diagram
• Feed the ends of the mains cable through the
cable screw fittings and cable inlets and wire them
according to the markings on the terminal strips.
• The 4-wire cable (L1, L2, L3, PE) is to be provided
onsite. The connection is established at the main
switch (Fig. 1a-e, item 1) or for systems of higher
power at the terminal strips in accordance with
the wiring diagram, the PE is connected to the
earth bar
Pump mains connections
Observe the installation and operating instruc-
tions for the pumps!
Power connection
The pumps must be connected to the terminal
strips in accordance with the wiring diagram, the
protective conductor must be connected to the
earth bar. Use shielded motor cables.
Connecting cable shields to the EMC threaded
cable connections
(SC-FC FM)
(1) or
(2)
(3)
Connecting cable shields to the shield clamps
(SC-FC ... BM)
The length of the cut (cut '3')
must be adapted precisely to the
width of the clamps used!
(1)
(2)
(3)
(4)
NOTE
If the pump connection cables are extended
beyond the dimension supplied ex-works, it is
necessary to comply with the EMC note in the
operating manual of the frequency converter
(only SC-FC version).
Connection of overtemperature protection/
pump fault
The thermal winding contacts (WSK) or fault signal
contacts (SCe version) of the pumps can be con-
nected to the terminals in accordance with the
wiring diagram.
Do not connect any external voltage to the ter-
minals!
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