Table of Contents
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Section 1
General Information
2-4 General Information
Caution:
Disconnect motor leads (T1, T2 and T3) from control before you
perform a "Megger" test on the motor. Failure to disconnect motor
from the control will result in extensive damage to the control. The
control is tested at the factory for high voltage / leakage resistance
as part of Underwriter Laboratory requirements.
Caution:
Suitable for use on a circuit capable of delivering not more than the
RMS symmetrical short circuit amperes listed here at rated voltage.
Horsepower
1–50
51–200
201–400
401–600
601–900
Caution:
Do not supply any power to the External Trip (motor thermostat)
leads at J1-16 and 17. Power on these leads can damage the
control. Use a dry contact type that requires no external power to
operate.
Caution:
Do not connect AC power to the Motor terminals T1, T2 and T3.
Connecting AC power to these terminals may result in damage to
the control.
Caution:
Baldor recommends not using "Grounded Leg Delta" transformer
power leads that may create ground loops. Instead, we recommend
using a four wire Wye.
Caution:
If the DB hardware mounting is in any position other than vertical,
the DB hardware must be derated by 35% of its rated capacity.
Caution:
If an M-Contactor is installed, the control must be disabled for at
least 20msec before the M-Contactor is opened. If the M-Contactor
is opened while the control is supplying voltage and current to the
motor, the control may be damaged.
Caution:
Do not connect any shields to the motor frame. At a minimum,
resolver signal integrity will be compromised and damage to the
control may result. The resolver shields must be connected at
J1-28 only.
rms Symmetrical Amperes
5,000
10,000
18,000
30,000
42,000
MN723
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Table of Contents
Troubleshooting
