User Guide

6
3 INTRODUCTION
T
hank you for purchasing the KBAC Adjustable Frequency Drive. KB Electronics, Inc. is committed to pro-
v
iding total customer satisfaction by producing quality products that are easy to install and operate. The
K
BAC 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 1 HP thru 5 HP. The sine wave coded Pulse Width Modulated (PWM) out-
put 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 applica-
tions 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 reg-
ulation 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 on or off equipment or 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), cus-
tomer selectable jumpers (Line Voltage (dual voltage models only), Motor Horsepower, Automatic Ride-
Through / Manual Start, Motor Frequency, Frequency Multiplier, Fixed/Adjustable Boost,
Regenerative/Injection Braking, “Run” or “Fault” Output Relay Operation, NO/NC Stop Contact,
Constant/Variable Torque, 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, Programming Kit, Modbus
Communication Module, 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 black 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 (ST
A
TUS).
• Run/Fault Relay Output Contacts – 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.
T
his product complies with all CE directives pertinent at the time of manufacture. Contact our Sales
D
epartment for Declaration of Conformity. Installation of a CE approved RFI filter is required. See RFI
F
ilters & Chokes Selection Guide D-321 (Part No. A42027) for selection of filters to meet the Industrial or
R
esidential Standard. Additional shielded cable and/or AC line cables may be required along with a signal
i
solator (SIAC (Part No. 9488)).