KB Electronics 8402

The KBPW-240D is a 115/230vac, Full-Wave PWM Variable Speed DC Drive in a NEMA-4X / IP-65 washdown and watertight casing. It is made to operate 90 and 180 Volt Permanent Magnet and Shunt Wound DC motors. .The efficient PWM waveform,operating at a switching frequency greater than 16kHz,provides almost pure DC to the motor (form factor 1.05).This provides high motor efficiency, whisper quiet operation along with less motor heating. This allows for a smaller, less costly motor to be used in most applications. Motor overload protection (I x t) will cease operating control if the motor is overloaded for a predetermined amount of time. The exclusive Auto-Inhibit circuit allows harmless, smooth starting during rapid cycling of the AC line. The KBPW-240D Variable Speed DC Drive can be controlled from a two or three wire start/stop circuit or can be started from the AC line. A set of dedicated normally open or normally closed relay contacts are included, which are started via the start/stop