salmson SIL Series, Installation And Starting Instructions

Page: 55 / 152

English
Installation and operating instructions SIL, DIL, PBS 45
• When pumps are used in systems with water temperatures above
90 °C, a suitably heat-resistant mains connection cable must be used.
• Check the current type and voltage of the mains connection.
• Observe the rating plate information for the pump. The current type
and voltage of the mains connection must correspond to the details
on the rating plate.
• Fuse protection on mains side: Dependent on rated motor current.
• Take additional earthing into account!
• The motor must be secured against overloading using a motor pro-
tection switch or the PTC thermistor tripping unit (see chapter 5.4
"Accessories" on page 36).
NOTE:
The connection diagram for electrical connections is in the cover of
the terminal box cover (see also Fig. 17).
Adjusting the motor protection
switch
• Adjust according to the rated motor current specified on the rating
plate of the motor, Y- ǧ starting: If the motor protection switch is
switched in the supply line to a Y- Ĵ contactor combination, set the
switch as for direct starting. If the motor protection switch is switched
in a thread of the motor supply line (U1/V1/W1 or U2/V2/W2), set the
motor protection switch to 0.58 x rated motor current.
• The special version of the motor is equipped with PTC thermistor sen-
sors. Connect the PTC thermistor sensors to the PTC thermistor trip-
ping unit.
CAUTION! Risk of property damage!
Risk of damage due to incorrect handling.
• Only a maximum voltage of 7.5 V DC may be applied to the
PTC thermistor sensor terminals. A higher voltage will destroy
the PTC thermistor sensor.
• The mains connection is dependent on the motor power P
2
, the mains
voltage and the activation type. The recommended switching
arrangement of the connection bridges in the terminal box should be
taken from the following list "Table 4: Connection terminal assign-
ment" on page 45 and Fig. 17.
• When connecting automatic switchgears, observe the relevant
installation and operating instructions.
NOTE:
Use of soft starters is recommended to limit the starting current and
preventing tripping of excess current protection devices.
Fig. 17: Mains connection
L1 L2 L3
W2 U2 V2
U1 V1 W1
L1 L2 L3
W2 U2 V2
U1 V1 W1
W2 U2 V2
U1 V1 W1
Activation type Motor power P
2
Ǭ 3 kW Motor power P
2
ǭ 4 kW
Mains voltage 3~ 230 V Mains voltage 3~ 400 V Mains voltage 3~ 400 V
Direct ǧ -connection (Fig. 17 top) Y-connection (Fig. 17 centre) ǧ -connection (Fig. 17 top)
Y- ǧ starting Remove connection bridges
(Fig. 17 below) not possible Remove connection bridges
(Fig. 17 below)
Table 4: Connection terminal assignment