User Guide

FIG. 10A – FULL

VOLTAGE FIELD

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 90VDC motors with 100VDC fields and 180VDC

motors with 200VDC fields. For motors with half

voltage fields, 90VDC motors with 50VDC fields and

180VDC motors with 100VDC fields, connect field to

terminals F+ and L1. See table 7, p. 18 for summary

of field connections.

CAUTION – Shunt-Wound motors may be damaged due to

overheating if field remains powered without motor rotating

for an extended period of time.

FIG. 10B – HALF VOLTAGE FIELD

TABLE 7 – FIELD CONNECTIONS (Shunt Wound Motors Only)

AC Line Voltage

(VAC)

Motor Voltage

Field Voltage

(VDC)

Field Connection

115 90 100 F+, F–

115 90 50 F+, L1

230 180 200 F+, F–

230 180 100 F+, L1

230 90* 100 F+, L1

*Step Down operation (see sec. III C, p. 9).

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

several ways using terminals “COM,” “+15,” “SIG” and “–15.” A 5K ohm

potentiometer is supplied with control. (A 10K potentiometer can also be used.)

(Warning! Terminals “COM,” “+15,” “SIG” and “–15" are not isolated

from AC line.) Note: Jumper J4 must be in the “15V” position.

i. Unidirectional operation only – Connect potentiometer to terminals “COM,”

“+15,” “SIG" for forward direction. To operate in reverse direction, connect to

“COM,” “SIG,” and “–15.” See fig. 11, p. 19.

ii. Bidirectional operation only – Connect to terminals “COM,” “+15,” “SIG,” and

“–15" when using reversing contacts. To operate with a potentiometer, connect

to “+15," “SIG,” and “–15." See fig. 11.