Grounding Procedure; Motor Connections; Optional Dynamic Brake Hardware - Baldor VS1SM Installation & Operating Manual

Note 1
Note 2 *Optional
Load
Reactor
Note 1
See Recommended Tightening
Torques in table 4‐1.
4.4.1

Grounding Procedure

1. Remove covers. Cover removal is described in Chapter 3 of this manual.
2. Connect the power ground wire to the ground terminal G (see Figure 3‐2).
3. Connect the motor ground wire to the ground terminal G (see Figure 3‐2).
4.4.2

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).
Long Motor Leads
The wire leads that connect the motor to the control are critical in terms of sizing, shielding and the cable
characteristics. Short cable runs are usually trouble free but fault-monitoring circuitry can produce
numerous faults when long cables (over 100 feet) are used.
100+ ft (30m). Baldor recommends adding an optional load reactor to the output of the control.
250+ ft (75m). Baldor recommends adding an optional load reactor and common mode choke to the
control.
The load reactor and/or common mode choke should be placed in close physical proximity to the control.
Unexpected faults may occur due to excessive charging current required for motor cable capacitance.
If you use long motor leads and experience unexpected trips due to current overload conditions and are
not sure how to correctly size and connect the optional load reactors, please contact your Baldor
representative. Baldor is always glad to assist.
4.5

Optional Dynamic Brake Hardware

Refer to MN763DB for DB resistor connections.
Dynamic Brake (DB) Hardware must be installed on a flat, non‐flammable, vertical surface for effective
cooling and operation.
4-4 Power Wiring
Figure 4‐4 Motor Connections
Baldor Control
U V W
A1 B1 C1
A2 B2 C2
V W
U G
Notes:
1. Metal conduit should be used. Connect
conduits so the use of Load Reactor or RC
Device does not interrupt EMI/RFI shielding.
2. See Line/Load Reactors described
previously in this section.
3. Use same gauge wire for ground as for U, V
and W.
Note 3
* AC Motor
See Figure 3‐2 for ground location.
* Optional components not
provided with control.
MN761