User manual KB ELECTRONICS KBWD-15

[. . . ] MODEL KBWD-15 Pulse Width Modulated (PWM) DC MOTOR SPEED CONTROL WHISPER DRIVETM INSTALLATION AND OPERATING INSTRUCTIONS See Safety Warning on Page 1 and Application Note Warning on Page 2 The information contained in this manual is intended to be accurate. However, the manufacturer retains the right to make changes in design which may not be included herein. Model KBWD-15 Rated 5. 0 ADC @ 115 VAC 50/60 Hz KB Part No. 8600 A COMPLETE LINE OF MOTOR DRIVES © 1999 KB ELECTRONICS, INC. TABLE OF CONTENTS Section Page i. Simplified Setup and Operating Instructions . [. . . ] Motor Armature ­ Connect motor armature to terminals A+ and A-. Be sure motor voltage corresponds to control output voltage range (90 ­ 130 VDC). It is recommended that a fuse be installed in series with the armature; choose a fuse rating equal to the motor rating. 7 C. Field ­ For Shunt Wound Motors Only. Do not use terminals F+ and F- for any purpose other than to power the field on a shunt wound motor. Connect motor shunt field to terminals F+ and F- for 90VDC motors with 100VDC fields. For motors with half voltage fields, 90VDC motors with 50VDC fields, connect field to terminals F+ and L1. See table 4 for summary of field connections. See figures 4A and 4B for field wiring diagrams. CAUTION ­ Shunt-Wound motors may be damaged if field remains powered without motor rotating for an extended period of time. FIG. 4B ­ HALF VOLTAGE FIELD TABLE 4 ­ FIELD CONNECTIONS (Shunt Wound Motors Only) AC Line Voltage (VAC) 115 115 Motor Voltage (VDC) 90 90 Field Voltage (VDC) 100 50 Field Connection F+, FF+, L1 D. Main Potentiometer ­ The control can be operated from a remote potentiometer, or from an isolated analog voltage for voltage following. Remote Potentiometer ­ Connect remote potentiometer wires to terminals P1, P2 and P3, so that the "high" side of the potentiometer connects to P3, the "wiper" to P2 and the "low" side to P1. Analog Input ­ An isolated 0-10 VDC analog voltage can also be used to drive the control. Note: If an isolated signal voltage is not available, an optional signal isolator can be installed (Model KBSI240D, P/N 9431). Connect the isolated input voltage to terminal P2 (positive) and P1 (negative). Microprocessor Input ­ An isolated PWM signal from a microprocessor can be used to operate the control. The output frequency should be 200 Hz or greater and should be derived from an optocoupler with a transistor or operational amplifier signal output. 5 ­ REMOTE POTENTIOMETER CONNECTION FIG. 7 ­ MICROPROCESSOR CONNECTION V. DC TACHOMETER INPUT. If tachometer feedback is required, an analog tach signal must be connected to terminal block TB3. Note: For tachometer feedback, Jumper J1 must be set for the proper tach voltage, and the IR COMP must be set to minimum (CCW) position. [. . . ] Control is now compensated so that minimal speed change will occur over a wide range of motor load. Note: Too much IR Comp will cause unstable (oscillatory) operation. Timed Current Limit (TCL) ­ This trimpot determines the approximate amount of time the drive will stay in Current Limit before "timing out. " The trimpot has an adjustment range of 1 ­ 7 seconds and is factory set for three (3) seconds. The trimpot can be reset according to the desired trip time. [. . . ]