Table of Contents
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Section 1
General Information
Electrical Installation
Overload Protection
Power Disconnect
Protection Devices
Catalog Number
SD29M1A02-PR
SD29M1A05-PR
SD29M2A02-PR
SD29M2A05-PR
Note: All wire sizes based on 75 C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be
used per NEC and local codes. Recommended fuses/breakers are based on 25 C ambient, maximum
continuous control output current and no harmonic current.
MN1230
All external wires for the control should be run in conduit that is separate from power
wiring. The use of shielded wire is recommended for all control wiring.
When interconnecting wires from power source, control, motor, host controller and other
devices it is important to make proper electrical connections. A connection must ensure
that proper electrical connection and mechanical bond of conductors. Use only UL (cUL)
listed connectors for the wire gauge and type being connected. Connectors are to be
installed using the crimp tool specified by the connector manufacturer. Wire with Class 1
wiring.
Baldor Controls feature motor overload protection suitable for motors that consume at
least 50% of the output rating of the control. Other governing agencies such as NEC
(National Electric Code) may require separate over current protection. The installer of this
equipment is responsible for complying with NEC guidelines and CE directives
(Conformite Europeene) and applicable local codes that govern wiring protection,
grounding, disconnects and other current protection.
A power disconnect should be installed between the input power service and the control
for a fail safe method to disconnect power. The control will remain in a powered-up
condition until all input power is removed from the control and the internal bus voltage is
depleted.
The control must have a suitable input power protection device installed. Input and
output wire size is based on the use of copper conductor wire rated at 75 C. Use the
recommended circuit breaker or fuse types as follows:
Circuit Breaker:
1 phase, thermal magnetic.
Equal to GE type THQ or TEB for 115 or 230 VAC
Fast Action Fuses: Buss KTN on 115 or 230 VAC.
Time Delay Fuses: Buss
Buss FRN on 115 or 230 VAC.
Table 3-2 describes the wire size to be used for power connections and the ratings of the
protection devices.
Table 3-2 Wire Size and Protection Devices
Input
Input
Inp t
Maximum
Maximum
M
i
Breaker
Continuous
Amps
2.5
18
5
35
2.5
18
5
35
Input Fuse
Inp t F se
Fast
Time Delay
Acting
4
4
8
8
4
4
8
8
Wire Ga ge
Wire Gauge
2
AWG
mm
#14
2.5
#14
2.5
#14
2.5
#14
2.5
Installation 3-3
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Troubleshooting
