KB Electronics KBAC-48 - Manual (Page 7)

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• Start/Stop Switch – Provides electronic start and stop functions.
• Barrier Terminal Block – Facilitates wiring of motor, AC line, and Run/Fault Relay Output Contacts.
• Jumper Selection of Drive Output Frequency – Increases the motor speed up to two times the
rated RPM.
• Ride-Through – Provides smooth recovery to the previous set speed during a momentary power
loss (of less than 2 seconds).
• Holding Torque at Zero Speed – Resists motor shaft rotation when the drive is in Stop Mode.
Note: GFCI Operation – This drive can operate with GFCIs (optional software required) – contact our
Sales Department.
3.2 Performance Features
• Power Start™ – Provides more than 200% starting torque which ensures startup of high frictional loads.
• Slip Compensation with Static Auto-Tune and Boost – Provides excellent load regulation over
a wide speed range.
• Speed Range – 60:1
3.3 PROTECTION FEATURES
• Motor Overload (I 2 t) with RMS Current Limit* – Provides motor overload protection which
prevents motor burnout and eliminates nuisance trips.*
• Electronic Inrush Current Limit (EICL™) – Eliminates harmful Inrush AC line current during startup.
• Short Circuit – Shuts down the drive if a short circuit occurs at the motor (phase-to-phase).
• Regeneration – Eliminates tripping due to high bus voltage caused by rapid deceleration of high
inertial loads.
• Undervoltage and Overvoltage – Shuts down the drive if the AC line input voltage goes above
or below the operating range.
• MOV Input Transient Suppression – Protects the drive components against damaging voltage
spikes on the AC line.
• Microcontroller Self Monitoring and Auto Reboot.
*UL approved as an electronic overload protector for motors.
3.4 TRIMPOT ADJUSTMENTS
• Minimum Speed (MIN) – Sets the minimum speed of the motor. See Section 13.1 on page 24.
• Maximum Speed (MAX) – Sets the maximum speed of the motor. See Section 13.2 on page 24.
• Acceleration (ACCEL) – Sets the amount of time for the motor to accelerate from zero speed to
full speed. See Section 13.3 on page 24.
• Deceleration (DECEL) – Sets the amount of time for the motor to decelerate from full speed to
zero speed. See Section 13.4 on page 24.
• DC Injection Brake (DECEL) – When the drive is set for DC Injection Braking (Jumper J7 set to
the “INJ” position), the DECEL trimpot is used to set the DC Injection Brake voltage and time.
See Section 13.5 on page 24.
• Slip Compensation (COMP) – Maintains set motor speed under varying loads. See Section 13.6
on pages 24 - 25.
• Current Limit (CL) – Sets the current limit (overload) which limits the maximum current to the
motor. See Section 13.7 on page 25.
• Boost (BOOST) – Sets the amount of Boost which can be used to obtain maximum low speed
performance. See Section 13.8 on page 26.
• Jog (JOG) – Sets the “jog” speed of the motor. Must be used with the optional Run-Stop-Jog
Switch Kit (Part No. 9340). See Section 13.9 on page 26.