KB Electronics KBAC-48 - Manual (Page 6)

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This product complies with all CE directives pertinent at the time of manufacture. Contact our
Sales Department for Declaration of Conformity. Installation of a CE approved RFI filter is
required. See RFI Filters & Chokes Selection Guide D-321 (Part No. A42027) for selection of filters that
meet the Industrial or Residential Standard. Additional shielded cable and/or AC line cables may be
required along with a signal isolator (SIAC - Part No. 9600).
3 INTRODUCTION
Thank you for purchasing the KBAC Adjustable Frequency Drive. KB Electronics, Inc. is committed to pro-
viding total customer satisfaction by producing quality products that are easy to install and operate. The
KBAC is manufactured with surface mount components incorporating advanced circuitry and technology.
The drives are variable speed controls housed in a rugged NEMA-4X / IP-65 washdown and watertight
die-cast aluminum enclosure. They are designed to operate 208 – 230 and 400/460 Volt 50 & 60 Hz
3-phase AC induction motors from subfractional thru 5HP. The sine wave coded Pulse Width Modulated
(PWM) output operates at a carrier frequency of 16 kHz which provides high motor efficiency and low
noise. Adjustable Linear Acceleration and Deceleration are provided, making the drive suitable for
soft-start applications.
Due to its user-friendly design, the KBAC AC drive is easy to install and operate. Tailoring to specific
applications is accomplished with selectable jumpers and trimpots, which eliminate 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 I 2 t Motor Overload Protection.* 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
start-up 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 equipment on or off , to signal a
warning if the drive is put into the Stop Mode, or if a fault has occurred. The drive is suitable for machine
or variable torque (HVAC) applications. Also, a jumper is provided for selection of Regenerative or
DC Injection Braking.
Standard front panel features include Diagnostic LEDs for “Power On” and “Drive Status”, a Start/Stop
Switch, and a Main Speed Potentiometer. Other features include a Barrier Terminal Block to facilitate
wiring of the AC line and motor, adjustable trimpots (MIN, MAX, ACCEL, DECEL, COMP, CL, JOG, BOOST),
customer selectable jumpers (Line Voltage - dual voltage models only), Motor Horsepower, Automatic
Ride-Through / Manual Start, Motor Frequency, Frequency Multiplier, Fixed/Adjustable Boost, Regenera-
tive / Injection Braking, “Run” or “Fault” Output Relay Operation, NO/NC Stop Contact, Constant/Variable
Torque and I 2 t Overload Selection).
Optional accessories include: Forward-Stop-Reverse Switch, On/Off AC Line Switch, Run-Stop-Jog Switch,
Signal Isolator, Auto/Manual Switch, Class ”A” AC Line Filter, Multi-Speed Board and Liquidtight Fittings.
A connector is provided for easy installation of accessories. Custom software: all models can be factory
programmed for applications which require special timing, PLC functions, and GFCI operation – contact
our Sales Department.
*UL approved as an electronic overload protector for motors.
3.1 Standard Features
• Industrial Duty Die-Cast Aluminum Case with Hinged Cover – Available in Dark Gray finish or
FDA approved White finish.
• Simple to Operate – Does not require programming. Uses trimpots and jumpers, which are
factory set for most applications.
• Motor HP Selection Jumper – Allows the drive to be used on a wide range of motors without
recalibration.
• Diagnostic LEDs – Power on (POWER) and drive status (STATUS).
• Run/Fault Relay Output Contacts – Can be used to turn equipment on or off, to signal a warning
if the drive is put into the Stop Mode, or a fault has occurred.