User Guide

Installation and operating instructions Wilo-Stratos /-D/-Z 17

English

7.2.1 Electrical pump connection (fig. 5)

• 230 V~, : Mains voltage, single-phase current 1~230 VAC ±10%, 60 Hz

Voltage across terminals “230V~” must be total 230 volt

either

• 230 volt “hot” lines and neutral line

• 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 VAC, 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.

NOTE: If a single motor in a parallel pump installation is switched off-load, the

built-in double-pump management is deactivated.

• Switching frequency:

• On-/Off switching by mains supply d 20 times / 24 h

• On-/Off switching by Ext. Off or 0...10 V Signal d 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

FC / 0...10 V / Ext.Min

DP-management

Cable type 3x14 AWG

3x14 AWG

multicore control

cable, number of cores

in acc. with number of

circuits, if nec. shielded

2-core cable (l d 2.5 m)