Baldor VS1MXS51, Installation & Operating Manual

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Power Wiring 4-3 MN762S
Figure 4-2 Wiring Locations
L1/L L2/N L3
Frame B
(VS1MXS51 shown
as an example)
Frame B
U V W + BR
See Recommended Tightening
Torques in Table 4-1.
4.4.4 Optional Dynamic Brake Hardware Frame B Controls
If optional DB resistor is to be used, connect it to the + and BR terminals, (see Figure 4-2). Dynamic
Brake (DB) Hardware must be installed on a flat, non-flammable, vertical surface for effective cooling
and operation. The DB Resistors get extremely hot during normal operation and must be mounted
away from flammable surfaces and unsafe atmosphere.
Table 4-1 Fuse & Wire size / Terminal Torque Specifications
Hp kW
Nominal
Input
Current
Fuse
or
MCB
Supply
Cable Size
Nominal
Output
Current
Motor Cable
Size
Max Motor
Cable Length
Min
Brake
Resistor
Value
amps amps AWG mm2 Amps AWG mm2 Feet Meters Ohms
500-600V +/-10% 3-Phase Input
1 0.75 2.2 3 15 1 1.7 15 1 164 50 47
2 1.5 4.1 6 15 1 3.1 15 1 328 100 47
3 2.2 5.4 6 15 1 4.1 15 1 328 100 47
5 4 7.6 10 15 1.5 6.1 15 1.5 328 100 47
7.5 5.5 11.7 16 14 2.5 9 14 2.5 328 100 47
Control Terminal Torque Settings of 4.5 lb-in (0.5 Nm)
Power Terminal Torque Settings of 9 lb-in (1 Nm)
For UL compliance Motor Cable to be Copper 75°C and Fuse current rating defined by ratings marked
( )*.
Wire size is based on 40°C surrounding and fuses are based on 45°C surrounding, max continuous
output and no harmonic current.
4.4.5 Motor Connections
All cables must be shielded and the shields must be grounded at the enclosure cable entrance.
1. Remove covers. Cover removal is described in Chapter 3 of this manual.
2. Connect the Motor leads to terminals U, V and W (See Figure 4-2 for location).
3. Connect the motor ground wire to the ground terminal (See Figure 4-2).