User manual KB ELECTRONICS KBWM-120

[. . . ] INSTALLATION AND OPERATING INSTRUCTIONS VARI-DRIVE TM NEMA 1 / IP20 SCR Variable Speed DC Motor Controls Model KBWM-120 rated 1/100 - 1/3 HP (90 Volts DC) @ 115 Volts AC, 50/60 Hz Model KBWM-240 rated 1/50 - 3/4 HP (180 Volts DC) @ 208/230 Volts AC, 50/60 Hz VARI-DRIVE TM DC MOTOR SPEED CONTROL 40 30 20 10 0 50 60 70 80 90 100 ON OFF (%) SPEED TM See Page 2 ! See Safety Warning on Page 1 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. TM A COMPLETE LINE OF MOTOR DRIVES © 2001 KB Electronics, Inc. TABLE OF CONTENTS Section i. Page Simplified Operating Instructions . Trimpot Adjustments and Control Functions . [. . . ] After wiring the front cover, install the mating rear cover with the four (4) 6x32 screws previously removed from the top and bottom of enclosures. 90V 180V 90V 180V IV. WIRING Be sure the AC power is "off" before wiring control. Read Safety Warning on page 1 before attempting to use this control. TABLE 5 ­ TERMINAL BLOCK WIRING INFORMATION Terminal Block Designation TB1 Connection Designation L1, L2, A+, ASupply Wire Gauge Minimum 22 Maximum 14 Maximum Tightening Torque (in-lbs) 3. 5 WARNING!To avoid erratic operation, do not bundle AC line and motor wires with potentiometer, voltage following, enable, inhibit or other signal wiring. Use shielded cables on all signal wiring over 12" (30 cm) ­ The shield should be earth grounded on the control side only. Wire the control in accordance with the National Electrical Code requirements and other codes that may apply to your area. ! FIGURE 4 ­ AC LINE & ARMATURE CONNECTION TB1 SW6 BLU L1 L2 A+ + M - A- A. AC Line ­ Wire the AC power to terminals L1 and L2. Be sure that the control model corresponds to the correct AC line input voltage. Model KBWM­120 is for 115 VAC 50/60 Hz and model KBWM­240 is for 208/230 VAC 50/60 Hz. 6 AC LINE MOTOR Caution: If control is wired to a transformer, it is advisable to switch the secondary to disconnect power. If the primary is switched, additional snubber capacitors may have to be added across terminals L1 and L2 to prevent power bridge damage. Separate branch fusing or circuit breaker may be required on 208/230 VAC applications. Motor Armature ­ Wire the motor armature wires to terminals A+ and A-. Be sure the motor voltage corresponds to the control voltage rating. Note: If motor runs in opposite direction to what is required, turn power off and reverse armature leads. Do not wire a switch or relay in series with the armature leads. Armature switching can cause catastrophic failure of motor and/or control. If reversing or dynamic braking is required, consult the Sales Department. ! C. Ground (earth) ­ Be sure to ground motor and control to green ground stud located between the Bx knockouts. Field (Shunt motors only) ­ Do not use F+ and F- terminals for any other motor type. The KBWMTM control is primarily designed for permanent magnet (PM) motors. However, a shunt motor can also be controlled by wiring the shunt field directly to the 1/4" quick-disconnect terminals located on the main speed control module. [. . . ] (Do not exceed 2 times motor rating. ) Do not leave motor in locked rotor position for more than a few seconds or damage may occur. Note: The CL LED will illuminate when the control is in current limit. 9 Note: If only an AC ammeter is available, it can be installed in series with AC input line. Follow above instructions; however, set AC amperage at 0. 75 motor rating. [. . . ]