Products > Motor, Geared Motor, Motion Control > DC drive > KB Electronics, Inc.

SCR DC drive
IP40 (Nema-1), 0.1 - 0.75 HP | KBWM Series KB Electronics, Inc.

The KBWM™Vari-Drive™adjustable speed SCR control for DC motors offers proven reliability in a rugge all-metal NEMA-1 enclosure.The Vari-Drives are equipped wit the ultimate KBMM™speed control module.They are specificall designed for fractional horsepower permanent magnet (PM DC motors.Two models are offered.The KBWM-120 i designed for 115 VAC input and is rated 1/100 - 1/3Hp at 9 VDC.For motors rated 1/50 - 3/4 Hp at 180 VDC use Mode KBWM-240.
KB's exclusive Plug-in Horsepower Resistor ®
automatically presets the drive's IR Comp and CL circuits fo safe operation on various motors.Although factor calibrated, internal trimpots for Min, Max, IR, CL, Accel an Decel can be used to fine-tune the KBWM™for specifi applications.Connections to the control are via a barrie terminal block.By changing the orientation of the front cove the wiring can be brought in either from the bottom or the to of the control.
Motor failure due to demagnetization is eliminated by th patented ultra-fast Direct-Fed™current limit circuit.Th controls contain AC line and armature* fusing, which provid protection against catastrophic failure.Auto-Inhibit ®, a KB
exclusive, allows the drive to be turned on and off rapidly usin the AC line without damage to the control and/or motor.Th internal CL LED is a diagnostic indicator that lights when th motor is overloaded.
A conveniently located front panel lighted rocker switc controls ACline input power to the drive.