The KB Electronics KBAC Adjustable Frequency Drive is a variable speed control housed in a rugged die cast NEMA-4X / IP-65 washdown and watertight enclosure. They are designed to operate 208-230 and 460 Volt 3-phase AC induction motors through 5 HP. The main features of the KBAC include adjustable Current Limit and I2t Motor Overload Protection. In addition, Adjustable Slip Compensation with auto-tune provides 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 and Adjustable Linear Acceleration and Deceleration make the drive suitable for soft-start applications. Also provided is a Horsepower Selection Jumper which enables the KBAC to be used on motors below its maximum rating without recalibrating Current Limit and Slip Comp. Standard front panel features of the KBAC include diagnostic LEDs, a Start/Stop Switch, and Main Speed Potentiometer. Run / Fault Relay output contacts are also provided. Optional accessories for the KBAC include a Power On/Off Switch, Forward-Brake-Reverse Switch, Signal Isolator, Multi-Speed Board and RFI Filters. The drive can be manually readjusted with trimpots and jumpers or digitally programmed with optional Drive-Link or DownLoad Module (DLM).