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18 Subject to technical alterations! WILO SE 03/2016
7.2.1 Electrical pump connection (fig. 6)
• 230 V~, : Power supply, single-phase current 1~230 V AC ±10%, 60 Hz
Voltage across terminals “230V~” must be total 230 volt
either
• 230 volt “hot” lines and neutral line
or
• two 230 volt “hot” lines.
• FC: A built-in collective fault signal is available on the FC (fault contact)
terminals as a potential-free closed contact.
Permissible contact load:
• minimum: 12 V DC, 10 mA,
• maximum: 250 V AC, 1 A.
Max. tightening torque of the connecting terminal screws (230 V~, , FC):
2.2lbinch
• Twin-head pumps or two single pumps as double pump:
Both motors in the parallel pump installation are to be provided with a separate
mains cable and a separate mains fuse protection.
• Switching frequency:
• On-/Off switching by mains supply ≤ 20 times / 24 h
• On-/Off switching by Ext. Off or 0...10 V Signal ≤ 20 times/ h
• Assignment of supply terminals: The following table shows the possibilities for
which combinations of circuits the individual cable glands in a cable can be
assigned.
Cable gland ½” Cable gland ¼” Cable gland PG 7
Function
Mains cable FC
Cable type 5x14 AWG
Function Mains cable FC
Cable type 3x14 AWG
3x14 AWG
2-core cable
Function Mains cable FC / Ext.Off / SBM
or
FC / 0...10 V / Ext.Min
DP-management
Cable type
3x14 AWG
3x14 AWG
3x14 AWG
multicore control
cable, number of cores
in acc. with number of
circuits, if nec. shielded
2-core cable (l ≤ 2.5 m)
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