Baldor BC142 - Plug-In Horsepower Resistor and Armature Fuse Kit

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each line must be used. The optional Barrier Terminal Board (Catalog No. BC147) contains prewired AC line and
armature fuse holders, as described in Section 14.2, on page 30.
The AC Line Fuse protects the control against catastrophic failure. If the AC Line Fuse blows, the control is mis-
wired, the motor is shorted or grounded, or the control is defective.
Note: Fuse each AC line conductor that is not at ground potential.
9 PLUG-IN HORSEPOWER RESISTOR® & ARMATURE FUSE KIT
The appropriate Plug-In Horsepower Resistor® and Armature Fuse are supplied as a prepackaged kit as shown
in Table 5, on page 22. Choose the Catalog No. containing the appropriate Plug-In Horsepower Resistor® and
Armature Fuse based on motor horsepower and voltage.
9.1 Plug-In Horsepower Resistor® – A Plug-In Horsepower Resistor® (supplied separately) must be installed
to match the control to the motor horsepower and voltage. Install the Plug-In Horsepower Resistor® as
shown in Figure 1, on page 10. Select the correct Plug-In Horsepower Resistor® as shown in Table 5, on
page 22.
Application Notes: 1. The Plug-In Horsepower Resistor® is used to calibrate the IR Compensation and
Current Limit based on motor horsepower and voltage. The Plug-In Horsepower Resistor® eliminates the
need to recalibrate IR Compensation and Current Limit in most applications. 2. Be sure the Plug-In
Horsepower Resistor® is inserted completely into the mating sockets.
9.2 Armature Fuse – It is recommended that an Armature Fuse (supplied separately) be installed in the arma-
ture fuse holder as shown in Figure 1, on page 10. Select the correct fuse as shown in Table 5, on page 22.
Fuses should be normal blow ceramic 3AG, MDA, or equivalent. The optional Barrier Terminal Board
(Catalog No. BC147) contains prewired AC line and armature fuse holders, as described in Section 14.2, on
page 30.
The Armature Fuse provides overload protection for the motor and control. The Armature Fuse required can
be calculated by multiplying the maximum DC Motor Current times 1.7.