KB Electronics KBAC-27D User Manual

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 Protection
1
Washdown and Watertight for Indoor and Outdoor Use
Rated for 208 – 230 and 400/460 Volt 50 Hz and 60 Hz
3-Phase and PSC
2
AC Induction Motors from Subfractional thru 10 HP
Operates from 115, 208/230, and 400/460 Volt 50/60 Hz AC Line Input
3
NOTE: The drive is factory set for
60 Hz motors. For 50 Hz motors,
see Section 10.4 on page 19.
See Safety Warnings on page 5.
LISTED
IND. CONT.
EQ.
–
70Z
A
4
RoHS
This Manual Covers 2G and 3G Models
3,5
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).
Copyright © 2017 KB Electronics, Inc.
(See Back Cover)
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KB Electronics KBAC-27D Specifications

General

Brand	KB Electronics
Model	KBAC-27D
Category	DC Drives
Language	English

Summary

Installation and Operation Manual KBAC Series

KBAC Series Overview

General introduction to the KBAC series drives, NEMA 4X/IP65 rated for washdown use.

Quick-Start Instructions

AC Line Input Fusing

Recommendation for installing a fuse or circuit breaker in the AC Line for protection.

AC Line Input Connection

Procedure for connecting the AC Line input to the drive's terminal block.

Safety Warnings

General Safety Precautions

Crucial safety information for installation, servicing, and operation by qualified personnel.

Electronic Motor Overload Protection

Explanation of the drive's built-in overload protection and current limit features.

Introduction to KBAC Drives

Protection Features

Outlines built-in protective functions like motor overload, inrush current limit, and short circuit protection.

Mounting Instructions

Explosion-Proof Warning

Explicit warning against using the drive in explosion-proof applications.

AC Line Input Fusing

Fuse and Circuit Breaker Requirements

Details requirements for protecting ungrounded AC line conductors.

Electrical Connections

General Wiring Precautions

Emphasizes safety, proper grounding, and using liquidtight fittings for watertight integrity.

AC Line Input Connection

Guides connecting AC line input to TB1, noting voltage selection and GFCI operation.

Motor Connection

Ground Connection

High Voltage Dielectric Withstand Testing (Hi-Pot Testing)

Hi-Pot Test Procedure

Recommended procedure to prevent damage during hi-pot testing.

Setting Selectable Jumpers

AC Line Input Voltage Selection (J1)

How to select the AC line input voltage (115V or 208/230V) using Jumper J1.

Motor Horsepower Selection (J2)

Setting Jumper J2 for the correct motor horsepower rating.

Automatic Ride-Through or Manual Start Selection (J3)

Motor Frequency Selection (J4 and J5)

Drive Operation

Start-Up Procedure

Steps to follow for initial drive start-up after setup and wiring.

Restarting After a Fault

How to restart the drive after a fault condition has been cleared.

Trimpot Adjustments

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

Adjusting the CL trimpot for motor overload protection and current limiting.