Jumper J3 Position Vs Motor Horsepower; Relationship Of Ac Line Input And Motor Voltage With J1, J2 And J4 Positions; Ac Line Voltage Jumper Setting; Motor Armature Voltage Jumper Setting - KB Electronics KBRG-212D Installation And Operating Instructions Manual

B. J3 – Armature Current – Select the J3 position (1.7, 2.5, 3.3, 5, 7.5) closest to the rated
motor current. (Note the maximum output current is set to 150% of the J3 position, which
may be readjusted using the FWD CL and REV CL trimpots.)
TABLE 4 – JUMPER J3 POSITION vs MOTOR HORSEPOWER
J3
7.5A
5.0A
3.3A
2.5A
1.7A
C. J4 – Motor Armature Voltage – Select the desired armature voltage by placing J4 in the
proper position, "A90" or "A180." Note: For 115 volt AC Line input, the armature
voltage must be set to "90." For 230 input, the armature voltage is normally set for
"180." However, it is also possible to set the armature voltage to "90" for step-down
operation. (See fig. 2 and table 5.) Note: Jumper J4 is also used if tach-generator
feedback is to be used. (See fig. 2)
If a 7 volt per 1000 RPM tach-generator is used, place jumper J4 into the "T7" position.
For a 50 volt per 1000 RPM tach-generator, place the jumper into the "T50" position.
Note: When using tach-generator feedback, the IR Comp trimpot should be turned to a
minimum setting (full CCW).
FIG. 1 – AC LINE VOLTAGE
115VAC
TABLE 5 – RELATIONSHIP of AC LINE INPUT AND MOTOR
AC INPUT VOLTAGE
115
230
230
*A 90VDC motor can be used with a 230VAC line. However, speed range may be reduced and
motor derating may be required.
4
Jumper J3 Position
Motor Current
(DC Amps)
7.5A
5.0A
3.3A
2.5A
1.7A
JUMPER SETTING
230VAC
VOLTAGE with J1, J2 and J4 JUMPER POSITION
J1, J2 POSITION
115
230
230
Motor Horsepower
90VDC
3/4
1/2
1/3
1/4
1/6
FIG. 2 – MOTOR ARMATURE
VOLTAGE JUMPER SETTING
90VDC
J4 POSITION
90
180
90*
180VDC
1
1
3/4
1/2
1/3
180VDC
MOTOR VOLTAGE
90
180
90*