User manual KB ELECTRONICS KBWM-240

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Manual abstract: user guide KB ELECTRONICS KBWM-240

Detailed instructions for use are in the User's Guide.

[. . . ] 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. 11 ii i. KBWM-120, 240 SIMPLIFIED OPERATING INSTRUCTIONS IMPORTANT ­ You must read these simplified operating instructions before proceeding. These instructions are to be used as a reference only and are not intended to replace the detailed instructions provided herein. [. . . ] The maximum allowable ambient temperature at full rating is 50 ºC (122 ºF). Note: The KBWMTM can be oriented so that the AC power and motor wiring can be brought in from the top of the control. Mount the rear cover so that the Bx knockouts are located on the top by rotating the rear cover 180º. The front cover is then installed right side up using the four (4) 6x32 screws previously removed from the top and bottom of the enclosure. 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. 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. 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-. Note: If motor runs in opposite direction to what is required, turn power off and reverse 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. [. . . ] For moderate changes in the maximum speed, there will only be a slight effect on the minimum speed setting. FIGURE 6A ­ ACCEL TRIMPOT ADJUSTMENT FACTORY SETTING 2 SEC. RAPID 0. 2 SEC. 5 SEC. 8 SEC. ACCEL FIGURE 6B ­ DECEL TRIMPOT ADJUSTMENT FACTORY SETTING 2 SEC. RAPID 0. 2 SEC. 5 SEC. Current Limit (CL/Torque Adjustment) ­ CL circuitry is provided to protect the motor and control against overloads. The CL is factory set to approximately 1. 5 times the full load rating of the motor. [. . . ]

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