KB Electronics KBAC-27D Installation And Operation Manual

Kbac series. adjustable frequency drive for 3-phase ac motors nema 4x / ip65 variable speed / soft-start ac motor drive with electronic motor overload protection1 washdown and watertight for indoor and outdoor use rated for 208 – 230 and 400/460 volt 50

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INSTALLATION AND OPERATION MANUAL

Adjustable Frequency Drive for 3-Phase AC Motors

3-Phase and PSC

Operates from 115, 208/230, and 400/460 Volt 50/60 Hz AC Line Input

NOTE: The drive is factory set for

60 Hz motors. For 50 Hz motors,

see Section 10.4 on page 19.

KBAC-24D, 27D, 29, 29 (1P), 45, 48, 217, 217S, 217F, 217SF, 416, 416S, 416F, 416SF

The information contained in this manual is intended to be accurate.

However, the manufacturer retains the right to make changes in design which may not be included herein.

Notes: 1. UL approved as an electronic overload protector for motors. 2. Special software is available for PSC

motors – contact Technical Support. 3. Third Generation (3G) drives are jumper selectable (J12) for standard and sensitive

GFCIs. 4. Installation of a CE approved RFI (EMI) filter is required. 5. Third Generation (3G) drives KBAC-24D, 27D, 29,

29 (1P), 45, 48 are marked "(3G)" on the product label. All KBAC-217, 416 Series drives are Third Generation (3G).

(See Back Cover)

KBAC SERIES

NEMA 4X / IP65

Variable Speed / Soft-Start AC Motor Drive

With Electronic Motor Overload Protection

Washdown and Watertight for Indoor and Outdoor Use

Rated for 208 – 230 and 400/460 Volt 50 Hz and 60 Hz

AC Induction Motors from Subfractional thru 10 HP

See Safety Warnings on page 5.

This Manual Covers 2G and 3G Models

LISTED

IND. CONT.

EQ. – 70ZA

3,5

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Quick-Start Instructions

1.1 Mounting Instructions

Instructions for physically mounting the drive unit.

1.2 AC Line Input Fusing

Details on recommended fusing or circuit breaker for AC line input.

1.3 AC Line Input Connection

How to connect the AC power supply to the drive's terminal block.

1.4 Motor Connection

Instructions for wiring the AC motor to the drive's terminal block.

1.5 Ground Connection

Proper grounding procedures for the drive and motor.

1.6 60 Hz and 50 Hz Motor Operation

How to configure the drive for 50 Hz or 60 Hz motor operation.

1.7 Start/Stop Switch

How to use the drive's built-in start/stop switch for operation.

1.8 Jumper Settings

Overview of jumper settings for drive configuration and tailoring.

1.9 Trimpot Adjustments

Introduction to trimpot adjustments for tailoring drive performance.

1.10 Diagnostic LEDs

How to interpret the diagnostic LEDs for drive status.

Safety Warnings

Definition of Safety Warning Symbols

Explains the meaning of various safety warning symbols used in the manual.

Safety Warnings - Please Read Carefully

General critical safety precautions and installation requirements.

CE Compliance

Notes on CE compliance and RFI filter requirements.

Important Application Information

3.1 Motor with External Fan Cooling

Guidance on motor cooling when operating at reduced speeds.

3.2 Electronic Motor Overload Protection

Details on the drive's built-in overload protection features.

Introduction

4.1 Standard Features

Overview of the drive's key standard features and capabilities.

4.2 Performance Features

Details on performance-enhancing features like Power Start and Slip Compensation.

4.3 Protection Features

Explanation of the drive's various protection mechanisms.

Mounting

KBAC-24D Mechanical Specifications

Dimensions and mounting details for the KBAC-24D model.

AC Line Input Fusing

Electrical Connections

7.1 AC Line Input Connection

Instructions for connecting the AC power supply to the drive's terminal block.

7.2 Motor Connection

Instructions for connecting the AC motor to the drive's terminal block.

7.3 Ground Connection

Proper grounding procedures for the drive and motor.

7.4 Remote Main Speed Potentiometer Connection

How to connect an external speed potentiometer to the drive.

7.5 Remote Start/Stop Switch Connections

How to wire external start/stop switches to the drive.

7.6 Automatic Restart

Configuration for automatic restart after power interruption.

7.7 Voltage Following Connections

How to connect analog voltage signals for speed control.

7.8 Enable Circuit Connection

How to use an enable circuit to control drive operation.

7.9 Run/Fault Relay Connection

How to use the drive's run/fault relay output contacts.

Reconditioning the Bus Capacitors

Setting Selectable Jumpers

10.1 AC Line Input Voltage Selection (KBAC-24D, 27D Only) (J1)

How to set the AC line voltage selection jumper (J1).

10.2 Motor Horsepower Selection (J2)

How to set the motor horsepower selection jumper (J2).

10.3 Automatic Ride-Through or Manual Start Selection (J3)

How to select automatic ride-through or manual start mode using J3.

10.4 Motor Frequency Selection (J4 and J5)

How to set motor frequency based on nameplate rating using J4/J5.

10.4.1 Setting the Drive for 60 Hz or 50 Hz Motor Operation

Details for setting the drive for 50 Hz or 60 Hz motor operation.

10.4.2 Setting the Drive for Two Times the Rated Motor RPM

How to configure the drive for up to 2x rated motor RPM.

10.5 Boost Mode Selection (J6)

How to select boost mode using Jumper J6.

10.6 Braking Mode Selection (J7)

How to select braking mode (Regenerative or DC Injection) using J7.

10.7 Run/Fault Output Relay Operation Selection (J8)

How to configure the Run/Fault relay operation using Jumper J8.

10.8 Stop Contact Type Selection (J9)

How to set the stop contact type (Normally Open/Closed) using J9.

10.9 Torque Mode Selection (J10)

How to select torque mode (Constant or Variable) using J10.

10.10 Jumper J11

Information regarding Jumper J11 (factory use only).

10.11 Switching Frequency and GFCI Selection (J12)

How to set switching frequency and GFCI type using J12.

Drive Operation

11.1 Start-Up Procedure

Steps for properly starting up the drive after setup and wiring.

11.2 Restarting the Drive After a Fault Has Cleared

Procedures for restarting the drive after a fault condition is resolved.

Trimpot Adjustments

12.1 Minimum Speed Trimpot (MIN)

How to adjust the minimum speed setting using the MIN trimpot.

12.2 Maximum Speed Trimpot (MAX)

How to adjust the maximum speed setting using the MAX trimpot.

12.3 Acceleration Trimpot (ACCEL)

How to adjust the acceleration time using the ACCEL trimpot.

12.4 Deceleration Trimpot (DECEL)

How to adjust the deceleration time using the DECEL trimpot.

12.5 DC Injection Brake Trimpot (DECEL)

How to set DC injection braking time using the DECEL trimpot.

12.6 Slip Compensation Trimpot (COMP)

How to adjust slip compensation for speed regulation using the COMP trimpot.

12.7 Motor Overload (I2t) with RMS Current Limit Trimpot (CL)

How to set the current limit trimpot for motor overload protection.

12.8 Boost Trimpot (BOOST)

How to adjust motor boost voltage using the BOOST trimpot.

12.9 Jog Trimpot (JOG)

How to adjust the jog speed using the JOG trimpot.

Diagnostic LEDs

13.1 Power On LED (PWR)

Describes the function of the Power On (PWR) LED.

13.2 Status LED (ST)

Explains the function and status indications of the Status (ST) LED.

Optional Accessories

KB Electronics KBAC-27D Installation And Operation Manual

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