User Guide

1
I. INTRODUCTION
Thank you for purchasing the KBPW-240D. KB Electronics, Inc. is committed to providing total
customer satisfaction by producing quality products that are easy to install and operate. The
KBPW-240D is manufactured with surface mount components incorporating advanced circuit-
ry and technology.
The KBPW-240D is a Pulse Width Modulated (PWM) control in a NEMA-4X / IP-65 watertight
and washdown enclosure designed to operate PWM and SCR rated Permanent Magnet and
Shunt Wound motors ranging from 0.2 Amps DC to 7.5 Amps DC. It operates at a switching
frequency greater than 16kHz to provide high motor efficiency and quiet operation.
Special cir-
cuitry automatically accepts AC line input voltages of 115 Volts AC to 208/230 Volts AC
(±10%, 50/60Hz) without having to make a jumper selection.
Standard panel mounted features include diagnostic LEDs (power on, stop, and overload),
Start/Stop switch, and speed potentiometer. Other features include barrier terminal blocks
(facilitate wiring of AC line, motor armature, motor field, tach-generator and run relay connec-
tions), adjustable trimpots (acceleration, deceleration, maximum speed, minimum speed, jog
speed [used with optional Run/Jog switch], current limit, timed current limit and IR Comp.)
i. SAFETY WARNING! Please read carefully
This product should be installed and serviced by a qualified technician, electrician, or electrical
maintenance person familiar with its operation and the hazards involved. Proper installation, which
includes wiring, mounting in proper enclosure, fusing or other overcurrent protection, and grounding
can reduce the chance of electrical shocks, fires, or explosion in this product or products used with this
product, such as electric motors, switches, coils, solenoids, and/or relays. Eye protection must be worn
and insulated adjustment tools must be used when working with control under power. This product is
constructed of materials (plastics, metals, carbon, silicon, etc.) which may be a potential hazard.
Proper shielding, grounding, and filtering of this product can reduce the emission of radio frequency
interference (RFI) which may adversely affect sensitive electronic equipment. If further information is
required on this product, contact the factory. It is the responsibility of the equipment manufacturer and
individual installer to supply this Safety Warning to the ultimate end user of this product. (SW effective
11/1992.)
This control contains electronic Start/Stop circuits that can be used to start and stop the control.
However these circuits are never to be used as safety disconnects since they are not fail-safe. Use
only the AC line for this purpose.
Be sure to follow all instructions carefully. Fire and/or electrocution can result due to improper use
of this product.
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PWM Safety Warning! This control contains a safety circuit which is designed to prevent
full speed runaway in the event the main power transistor fails. However, this safety cir-
cuit is not infallible and may itself fail to operate and therefore allow a full speed runaway con-
dition to exist. The installer of this product should take proper precautions to include other
means to protect the operator or the machine involved (such as mechanical disconnects, warn-
ing notices, etc.).
!
This product complies with all CE directives pertinent at the time of manufacture. Contact the
Sales Department for detailed installation and Declaration of Conformity. Installation of a CE
approved RFI filter (KBRF-200A [P/N 9945C] or equivalent) is required. Additional shielded motor cable
and/or AC line cables may be required along with a signal isolator (KBSI-240D [P/N 9431] or equivalent).
Electrical Hazard Warning Symbol: Failure to observe this warning could result in
electrical shock or electrocution.
Operational Hazard Warning Symbol: Failure to observe this warning could result in
serious injury or death.
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