KB Electronics KBRG-212D User Manual

Page 14

FIGURE 3 – AC LINE AND ARMATURE CONNECTION

F+ F-

TB3

(EARTH)

GND

AC LINE
INPUT

L1 L2 M2 M1

ARMATURE

FUSE

TB2

See Table 6, for Torque Requirements.

6.3 Fusing

AC Line Fuse – The KBRG-212D does not contain an AC line fuse or Armature

fuse. It is recommended that a 20 Amp fuse or circuit breaker be

installed on

each AC line conductor not at ground potential. In addition, refer to Table

for

recommended Armature Fusing.

CAUTION: Most electrical codes require that each ungrounded conductor contain
fusing. Separate branch circuit fusing may be required. Check local electrical codes.

6.4 Motor

Armature

– Connect motor armature to terminals M1 and M2. Be sure that

jumper J2 matches the motor being used. (See Figure 3).

TABLE 7 – ARMATURE FUSE CHART

Motor Horsepower

90 VDC

180 VDC

Approx. DC Motor

Current Amps

Fuse Rating

(AC Amps)

1/8

1.3 2

1/6 1/3

1.7 2

¼ ½

2.5 4

1/3 ¾

3.3

½ 1

5.0 8

7.5 12

1 2 10.0 20

6.5

Field (For Shunt Wound Motors Only) –

Connect motor armature leads as above.

Connect full voltage shunt field leads (90 volt motors with 100 volt fields and 180 volt
with 200 volt fields) to F+ and F-. Connect half voltage field leads (90 volt motors
with 50 volt fields and 180 volt motors with 100 volt fields) to F+ and L1. See Table
8, Figures 4 and 5, on page 15, for field connection diagrams.

CAUTION! Shunt-Wound motors may be damaged if field remains connected without
motor rotating for an extended period of time.

Note: Do not connect motor armature leads to F+ and F- terminals. Do not use F+ and F-

terminals for PM motors.