Installation
ElectricalConnections
Wire Connections at the Motor
(Motor Code A)
NOTE: Follow the instructions in the motor
manufacturer’s manual. Use a motor starter with
overload protection. Wire size, fuse size, and other
electrical devices must comply with all local codes
and regulations.
The motor must be wired to the VFD. Install the
wiring at the motor as follows:
1. Remove 4 bolts to open the motor’s electrical
box.
2. Install a strain relief in one of the ports at the
bottom of the junction box.
3. Connect the green ground wire to the ground
screw.
4. For 230 V motors: Bridge as shown, then
connect L1 to T1, L2 to T2, and L3 to T3.
T4
T5
T6
L2
L3
L1
T7
T8
T9
T1
T2
T3
Figure 3 Wire Connections for a 230 V Motor
5. For 460 V motors: Bridge as shown, then
connect L1 to T1, L2 to T2, and L3 to T3.
T4
T5
T6
L2
L3
L1
T7
T8
T9
T1
T2
T3
Figure 4 Wire Connections for a 460 V Motor
6. Close the motor electrical box. Torque the bolts
to 20 in-lb (2.2 N•m).
Wire Connections at the ATEX Motor
(Motor Code C)
Install the wiring at the motor as follows:
1. Open the motor’s electrical box.
2. Install wiring system with proper connections to
the motor electrical box.
3. Connect the green ground wire to the ground
screw.
4. For 400V Wiring: Bridge as shown, then connect
wire L1 to U1, L2 to V1, and L3 to W1.
W2
U2
V2
L2
L3
L1
U1 V1 W1
Figure 5 Connections for 400V Wiring
5. For 230V Wiring: Connect wire L1 to U1, L2 to
V1, and L3 to W1. Bridge as shown.
W2
U2
V2
L2
L3
L1
U1 V1 W1
Figure 6Connections for 230V Wiring
6. Torque terminals to 20 in-lb (2.3 N•m).
7. Close the motor electrical box. Torque the
screws to 20 in-lb (2.3 N•m).
8. Connect thermostat wires P1 and P2 to external
overload detection. Thermostat is NC (normally
closed).
16
3A5132F
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