Wilo Stratos 1.25x3-20 Notice De Montage Et De Mise En Service page 21

7.2.1 Electrical pump connection (fig. 5)
• 230 V~,
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~,
2.2 lb inch
• 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.
Function
Cable type
Function
Cable type
Function
Cable type
Installation and operating instructions Wilo-Stratos /-D/-Z
: Mains voltage, single-phase current 1~230 V AC ±10%, 60 Hz
Cable gland ½"
Mains cable FC
5x14 AWG
Mains cable
3x14 AWG
3x14 AWG
Mains cable
3x14 AWG
3x14 AWG
3x14 AWG
Cable gland ¼"
FC
2-core cable
FC / Ext.Off / SBM
or
FC / 0...10 V / Ext.Min
multicore control
cable, number of cores
in acc. with number of
circuits, if nec. shielded
, FC):
Cable gland PG 7
DP-management
2-core cable (l d 2.5 m)
English
17