A Variable Speed Drive with a difference

The KB electronics KBMA Adjustable Frequency drive simplifies small VSDs mounting and commissioning, so there is no need to be a specially trained technician.

The KBMA are designed to operate at 115/230v AC input, 50 & 60 Hz. It will control 3-phase AC induction motors from .09kw through 0.75kw. The sine wave coded Pulse Width Modulated (PWM) output operates at a carrier frequency 8 or 16 kHz, which provides high motor efficiency and low noise. Adjustable Linear Acceleration and Deceleration make the drive suitable for soft-start applications.

The Motor Horsepower Selection Jumper allows the drive to be used on a wide range of motor Kilowatt (.09, 0.18, 0.37, 0.55, 0.75kw) without recalibration or programming. 
Model KBMA-24DF contains a built-in AC line Class A RFI (EMI) filter which meets the CE Council Directive 89/336/EEC Industrial Requirement.

Its user-friendly design makes the KBMA easy to install and operate. Setting the drive to specific applications is accomplished with selectable jumpers and trimpots, which eliminates the computer-like programming required on other drives. However, for most applications no adjustments are necessary. For more advanced programming, PC based Drive-Link™ software is available.

Main features include adjustable RMS Current Limit and I2t Motor Overload Protection.1 In addition, Adjustable Slip Compensation with Static Auto-Tune and Boost provides high torque and excellent load regulation over a wide speed range. 
Power Start™ delivers over 200% motor torque to ensure startup of high frictional loads. Electronic Inrush Current Limit (EICL™) eliminates harmful AC line inrush current. A Run/Fault Relay is provided, which can be used to turn on or off equipment or to signal a warning if the drive is put into the Stop Mode or a fault has occurred.

Standard front panel features include an On/Off AC Line Switch, a Pilot Light for power on, and a Main Speed Potentiometer. Other features include PC board mounted diagnostic LEDs (Power On (ON), Drive Status (ST) and Overload (OL)), Barrier Terminal Blocks to facilitate wiring (AC line, motor, ground (earth), and Run/Fault Relay Output Contacts), adjustable trimpots (MIN, MAX, ACCEL, DECEL, COMP, CL), customer selectable jumpers (AC Line Input Voltage Selection, Motor Horsepower, Automatic or Manual Start and Reset5, Motor Frequency, Frequency Multiplier, “Run” or “Fault” Output Relay Operation).
Optional accessories include: Forward-Stop-Reverse Switch, AC Line Filter and Programming Kit.