KB Electronics KBPC-240D User Manual
Page 14
11
FIG. 10 – TACH-GENERATOR
CONNECTION DIAGRAM
TABLE 8 – RELATIONSHIP of AC LINE INPUT AND MOTOR
VOLTAGE with J2 and J3 JUMPER POSITION
AC INPUT VOLTAGE
J2A, J2B POSITION
J4 POSITION
MOTOR VOLTAGE
115
115
90
90
230
230
180
180
230
230
90*
90*
*A 90VDC motor can be used with a 230VAC line. However, speed range may be reduced and
motor derating may be required.
C. Field – For Shunt Wound Motors Only. Do not use terminals F1 and F2 for any other
purpose than to power the field on a shunt wound motor. Connect motor shunt field to
terminals F1 and F2 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 F1 and L1. See table 9 for
summary of Field Connections. See figures 9A and 9B for field wiring diagrams.
CAUTION – Shunt-Wound motors may be damaged if field remains powered without
motor rotating for an extended period of time.
TABLE 9 – 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 section II C, p. 7).
FIG. 9A – FULL VOLTAGE FIELD
FIG. 9B – HALF VOLTAGE FIELD
D. Ground – Be sure to ground (earth) the
control by connecting a ground wire to the
Green Ground Screw located to the right of
the terminal block. (See fig. 1, p. 3)
E. DC Tach-generator Input – If tach-
generator feedback is required, an analog
tach signal must be connected to the
terminal block TB3. (Note: For tach-
generator feedback Jumper J3 must be set
to the "T" position, jumper J6 must be set for the proper tach voltage, and the IR COMP
must be set to minimum (ccw) position.) (See section II F, p. 9.) Connect the tach-
generator so that when the motor rotates the positive tach voltage lead is connected to
T+ and the negative tach lead is connected to T– (See figure 10).
TACHOMETER WIRES MUST BE CONNECTED SO THAT
CORRECT POLARITY IS ACHIEVED WHEN TACH ROTATES