Incoming Power And Motor Connections - Baldor VS1SD Installation & Operating Manual

4.9 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 R2
R1/B+
Frame Size B and C Drives
L1 L2 L3
B+/R1
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.
*Optional components not provided with control.
Notes:
1. See "Protective Devices" described previously in this section.
2. Use same gauge wire for Earth ground as is used for L1, L2
and L3 for AA, B, C frame drives. For D frame drives, size the
grounding conductor per the local electrical codes.
3. Metal conduit should be used. Connect conduits so the
use of a Reactor or RC Device does not interrupt EMI/RFI
shielding.
4. See Line/Load Reactors described previously in this section.
4-6 Power Wiring
Figure 4-3 Power Connections
B- T1 T2 T3 TH1 TH2 GND
R2 B- T1 T2 T3 TH1 TH2 GND
Figure 4-4 3 Phase Input Power Connections
Frame Size AA 3-Phase Input Drives
Motor
L1 L2 L3 GND
R1/B+
Chassis
Ground
L2 L3
L1
Ground
Note 1
Note 3
Note 4
Note 3
R2 B- T1 T2 T3 TH1 TH2 GND
Frame Size D Drives
B+/R1 R2 B-
TH1 TH2 GND
Motor Thermal
Leads
L1 L2
*Fuses
A1 B1 C1
*Optional
Line
Reactor
A2 B2 C2
L1 L2
Baldor
Control
Motor
Chassis
Ground
T2 T3
T1
Earth
L3
Note 2
L3
GND
MN766