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

Three-phase motors
U2
W2 V2
W1
V1
U1
L1 L2
L3
Schematic drawing of delta and star connection
Pos. Description
Δ Delta
Y Star

6.1 Wiring diagrams for SMG and SFG

U1 V1 W1 W2 U2 V2
(1) (2) (3) (4)
(5) (6) (11) (12) (21) (22)
U1 V1 W1
U2 V2 W2
M3~
Three thermal switches
26
U2 V2
W2
W1
V1
U1
L1 L2
L3
PTO LS PE
11
F6
F6
F6
B
Terminals Description
Ends of the three stator windings,
1, 2, 3, 4, 5, 6
(U1, V1, W1, W2, U2, V2)
11, 12 Thermal switches (F6)
21, 22 Leakage sensor in gearbox (B)
U1 V1 W1 W2 U2 V2
Three PTC sensors
Terminals Description
Ends of the three stator windings,
1, 2, 3, 4, 5, 6
(U1, V1, W1, W2, U2, V2)
PTC sensors according to DIN
31, 32
44081 (ϑ1, ϑ2, ϑ3)
21, 22 Leakage sensor in gearbox (B)
PTC LS PE