Incoming Power And Motor Connections - Baldor VS1GV21-1B Installation & Operating Manual

4.8 Incoming Power and Motor Connections

Figure 4-3 shows the layout of the terminals on the power connectors for each size drive. All cables must be in conduits
or shielded and the conduits or shields must be grounded at the cable entrance. The brake resistor and cable must be in a
conduit or shielded if installed outside the enclosure.
Frame Size AA 1-Phase Input Drives
L1 L2 N GND
R1/B+
Frame Size B and C Drives
L1 L2 L3
Frame Size E Drives
L1 L2 L3
B+/R1 R2
Input AC Power
Ground
See recommended tightening torques in Table A-2.
*Remove TH1 to TH2 jumper if Motor Thermal Leads are connected.
Note: An open circuit between TH1 and TH2 will cause an overtemperature fault.
Refer to fault/troubleshooting information in Chapter 9.
1. Access the Power and Motor Terminals (see Cover Removal procedure).
2. Feed the power supply and motor cables into the drive through the cable entrance.
3. Connect the line L1, L2, L3 and GND to the power terminal connectors, Figure 4-4.
4. Connect motor leads to T1, T2, T3 and GND motor terminal connectors.
Note: H2E-Frame Size, 250HP and 300HP (575V) drives utilize studs for power terminations.
4-6 Power Wiring
Figure 4-3 Power Connections
R2 B- T1 T2 T3 TH1 TH2 GND
R2 B- T1 T2 T3 TH1 TH2
B+/R1
T2 T3
T1
B- TH1 TH2 GND
Frame Size AA 3-Phase Input Drives
Motor
L1 L2
Chassis
Ground
GND
L2
L1
TH1 TH2
Motor Thermal
Leads
L3 GND R2 B- T1 T2 T3 TH1
R1/B+
Frame Size D Drives
L3
B+/R1
TH1 TH2 GND
Ground
Motor Thermal
Leads
Frame Size F Drives
Note: Thermal lead terminal block mounted
on left side wall.
GND
R1
R2
L1 L2 L3
Motor
TH2 GND
Chassis
Ground
R2 B-
T2 T3
T1
T1 T2 T3
Ground
MN765