KB Electronics KBIC-240DS - Manual (Page 13)

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WARNING! IF CONTROL IS WIRED TO A TRANSFORMER, DO NOT SWITCH THE
PRIMARY SIDE OF TRANSFORMER TO DISCONNECT POWER OR CATASTROPHIC FAILURE CAN
RESULT. ALWAYS DISCONNECT CONTROL FROM SECONDARY SIDE OF TRANSFORMER.
WARNING! ARMATURE SWITCHING. DO NOT SWITCH THE ARMATURE IN AND OUT OF
CIRCUIT OR CATASTROPHIC FAILURE WILL RESULT. IF ARMATURE SWITCHING IS REQUIRED
FOR DYNAMIC BRAKE OR REVERSING, USE MODEL KBRG, KBPB OR KBCC-R SUFFIX
CONTROLS.
CAUTION: Do not bundle potentiometer connections (P1, P2, P3) and Inhibit™ connections (I1, I2) with
AC line or motor wires.
Note: (Shunt motors only) For 90VDC motors with 50VDC fields and 180VDC motors with 100VDC fields,
use half voltage field connections F+ and L1. (See Table 1, on page 8).
5.3 Fusing (AC Line and Armature) – The AC line fuse protects the control against catastrophic
failure. If the fuse blows, the control is mis-wired, the motor is shorted or grounded, or the KBIC ®
control is defective. The armature fuse provides overload protection for the motor and control.
Choose the proper size armature fuse and AC line fuse by multiplying the maximum DC motor
amps by 1.7. (Armature and AC line fuse kits are available from your distributor). On domestic 230
Volt AC lines, separate branch circuit protection for each line must be used. All fuses should be
normal blow ceramic 3AG or MDA or equivalent. See Fuse Chart, Table 4, on page 9.
Note: Also available, the Barrier Terminal Kit (optional), which contains pre-wired AC line and
armature fuseholders. Contact your distributor.