KB Electronics KBRG-255 User Manual

Page 11

FIG. 3 – AC LINE AND ARMATURE VOLTAGE

TABLE 4 – TERMINAL BLOCK WIRING INFORMATION

Terminal Block

Designation

Connection

Designation

Supply Wire Gauge*

Maximum

Tightening

Torque (lb inch)

Minimum

Maximu

TB1 (Power Board)

F+, F-

TB1 (Logic Board)

Logic Connections

3.5

TB2

L1, L2, M1, M2

*AWG, Cu wire only.

A. AC Line – Connect AC line to

terminals L1 and L2. (See fig

3.)

B. Ground – Be sure to ground

(earth) the control via green

screw located on chassis

C. Motor Armature – Connect

motor armature to terminal M1 and

M2. (See fig. 3)

D. Field (For Shunt Wound motors

only) – Do not use F+ and F-

terminals for any other motor type. Connect motor shunt field to terminals F+ and F- for

180VDC motors with 200VDC fields. For motors with half voltage fields, 180VDC motors

with 100VDC fields, connect field to terminals F+ and L1 (see fig 4A and 4B). See table

5 for summary of Field Connections.

CAUTION – Shunt-Wound motors may be damaged if field remains connected

without motor rotating for an extended period of time. To remove field voltage from

motor, disconnect AC line.

FIG. 4A – FULL VOLTAGE FIELD

FIG.4B – HALF VOLTAGE FIELD

TABLE 5 – FIELD CONNECTIONS (Shunt Wound Motors Only)

AC Line Voltage (VAC)

Motor Voltage

Field Voltage (VDC)

Field Connection

230

180

200

F+, F-

230

180

100

F+, L1

E. Main Speed Potentiometer – The main speed potentiometer can be connected in several

ways using terminals "10," "11," "12" and "13." ( A 5K ohm potentiometer is supplied with

control. A 10K potentiometer can also be used.) [WARNING: Terminals 10, 11, 12 and

13 are not isolated from AC line. Do not ground (earth).]

i. Unidirectional operation only – Connect potentiometer to terminals "10," "12," "13" for

forward direction. (To operate in reverse direction, connect to "11," "12," "13.")