Wiring Diagrams For Smg And Sfg - Grundfos SMD Series Installation And Operating Instructions Manual

6.4 Wiring diagrams for SMG and SFG

Three-phase motors
For starting method 1H, wire the motor using the delta connection
and for starting method 0H, wire the motor using the star
connection. Connection methods are shown in fig. 24. See also
section 9.2.2 Nameplate, fig. 37, position 1, and section
9.2.1 Type key to determine the voltage and starting method of
your mixer or flowmaker.
Delta
W2 U2 V2
U1 V1 W1
L1 L2 L3
Fig. 24 Schematic drawing of delta and star connection
U1 V1 W1
U2 V2 W2
M3~
Fig. 25 Three thermal switches (PTO)
Terminals Description
Ends of the three stator windings
1, 2, 3, 4, 5, 6
(U1, U2, V1, V2, W1, W2)
11, 12 Thermal switches (F6)
21, 22 Leakage sensor in gearbox (B)
Star
W2 U2 V2
U1 V1 W1
L1 L2 L3
F6
F6
F6
B
U1 V1 W1
U2 V2 W2
M3~
Fig. 26 Three PTC sensors
Terminals Description
Ends of the three stator windings
1, 2, 3, 4, 5, 6
(U1, U2, V1, V2, W1, W2)
PTC sensors according to DIN 44081
31, 32
(ϑ1, ϑ2, ϑ3)
21, 22 Leakage sensor in gearbox (B)
B
17