Metalfab Model KBPC-240D- Motor User Manual

Page 12

FIG. 8 – CONNECTION DIAGRAM

FIG. 7A – CAPTIVE SCREW

TIGHTENED IN CASE

FIG. 7B – CAPTIVE SCREW

ENGAGED IN FRONT COVER

IV.

WIRING.

Warning! Read Safety Warning before attempting to use this control.

Warning! To avoid erratic operation do not bundle AC Line and motor wires with
potentiometer, voltage following, enable, inhibit or other signal wiring. Use shielded
cables on all signal wiring over 12" (30 cm) – Do not ground shield.

Wire control in accordance with the National Electric Code requirements, and other codes that
apply. Be sure to fuse each conductor which is not at ground potential. Do not fuse neutral
or grounded conductors. Note: See section V, Fusing, on page 13. A separate AC line
switch, or contactor, must be wired as a disconnect switch, so that the contacts open each
ungrounded conductor. An accessory ON/OFF AC Line Switch (KB P/N 9341) may be
installed in this control in lieu of, or in addition to, the Start/Stop Switch normally provided.
The switch can be wired for double pole or single pole operation. (See fig. 8, for AC Line and
Armature connection.)

To maintain the watertight integrity of the control, be sure to use suitable watertight connectors
and wiring, which are appropriate for the application. Two .875" (22.2 mm) knockout holes are
provided for a standard 1/2" knockout connector (not supplied) for wiring. A watertight plug
is provided if only one knockout is required.

A. AC Line – Connect AC Line to terminals L1 and L2. (Be sure jumpers J2A and J2B are

set to the correct position to match the AC line input voltage. See table 8 on page 11.

TABLE 7 – TERMINAL BLOCK WIRING INFORMATION

Terminal Block

Designation

Connection

Designation

Supply Wire Gauge*

Maximum Tightening

Torque (lbs inch)

Minimum

Maximum

TB1

A1, A2, L1, L2

TB2

F1, F2

3.5

TB3

T+, T–

3.5

*Use Cu wire only (AWG)

B. Motor Armature – Connect motor armature

to terminals A1 (+) and A2 (–). (Be sure
jumper J3 is set to closely match motor
voltage. See table 8, p. 11.) WARNING! Do
not wire switches or relays in series with the
armature. Armature switching can cause
catastrophic failure of motor and/or
control. Do not bundle AC and motor
wires with other wires (e.g.,
potentiometer, analog input, Forward-
Brake-Reverse, etc.).