Kb Electronics KBLF User Manual.pdf

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Installation & Operation Manual

 

 

 

 

 

 

 

 

 

KBVF SERIES

U

 

 

 

 

 

 

 

COMP

Chassis / IP-20 AC Drives

 

MOTOR

 

115V

 

 

 

 

 

V

 

B–

 

 

 

 

ACC

Variable Speed / Soft-Start

 

 

230V

 

 

 

 

 

 

 

 

 

J1

 

 

 

DEC/B

with Electronic Motor Overload Protection*

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIN

Rated for 208-230 Volt 50 & 60 Hz

L1

LINE AC

 

 

 

 

 

 

MAX

3-Phase & PSC** AC Induction Motors

 

 

 

 

 

 

 

 

CL

from Subfractional thru 112 HP

L2

 

 

 

ST

 

P3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B+

PWR

 

P2

 

 

Operates from 115 and 208/230 Volt

 

 

 

50/60Hz

 

 

 

 

 

 

 

 

J1

P1

 

 

50/60 Hz AC Line Input***

 

 

 

CON3

 

X1 X2

CON1

CON2

F - S - R

 

 

 

 

J2

A/M

See Safety Warning,

 

 

 

 

 

 

 

 

 

on pages 8 and 9.

 

 

 

 

 

 

 

 

 

This manual covers Models

****

Note: The drive is factory set for

 

 

 

 

60 Hz motors. For 50 Hz motors,

 

 

 

 

KBVF-21D, 22D, 13, 23, 23D, 14, 24, 24D, 26D

 

 

see Section 6.2, on page 25.

 

 

 

 

 

 

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.

*UL approved as an electronic overload protector for motors. **Custom software is required for PSC motors. See PSC Motor Addendum (Part No. A42142). ***Do not use this drive with GFCIs. Special software is required — Contact our Sales Department. ****Requires CE approved RFI /Filter. See RFI Filters & Chokes Selection Guide D-321

(Part No. A42027) for selection of filters to meet the Industrial or Residential Standard.

A Complete Line of Motor Drives

© 2006 KB Electronics, Inc.

 

(see back cover)

 

TABLE OF CONTENTS

 

 

Section

Page

1

Quick-Start Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

6 – 8

2

Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

8 – 9

3

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

– 20

4

Important Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

– 22

5

Finger-Safe Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22

– 23

6

Setting Selectable Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

– 27

7

Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

– 28

8

Recommended High Voltage Dielectric Withstand Testing (Hi-Pot Testing) . . . . . . . . . . . . . .

28

– 30

9

Wiring Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30

– 35

10

AC Line Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 35

11

Drive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

– 37

12

Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37

– 38

13

Trimpot Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38

– 43

 

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 44

Table

Page

1

Electrical Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 14

2

General Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 15

3

Fault Recovery and Resetting the Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 36

4

Drive Operating Condition and Status LED Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. 38

Figure

Page

1

Quick-Start Connection Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

. . 5

2A

Models KBVF-21D, 22D, 13, 23, 23D Mechanical Specifications and Control Layout. . . . . . .

. .

. 16

2B

Models KBVF-21D, 22D, 13, 23, 23D Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . .

. .

. 17

ii

 

TABLE OF CONTENTS (Continued)

 

Figure

Page

3A

Models KBVF-14, 24, 24D, 26D Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 18

3B

Models KBVF-14, 24, 24D, 26D Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 19

4

Expanded View of Jumpers and Trimpots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 20

5

Maximum Allowed Motor Torque vs. Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 21

6

Open Ventilated Motor with External Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 21

7

Models KBVF-21D, 22D, 23D, 24D AC Line Input Voltage Selection . . . . . . . . . . . . . . . . . . . . .

. 24

8

Model KBVF-26D AC Line Input Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 24

9

Removing Jumper J1 on Model KBVF-26D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 25

10

60 Hz and 50 Hz Motor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 25

11

Available Torque vs. Output Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 26

12

120 Hz and 100 Hz Drive Output Frequency Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 26

13

Automatic Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 27

14

Forward/Reverse Speed Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 27

15

Typical Hi-Pot Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 29

16

AC Line Input, Motor, and Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 31

17

Main Speed Potentiometer Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 32

18

Voltage Following Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 33

19

Manual Start Switch Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 34

20

Forward-Stop-Reverse Switch Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 34

21

Enable Switch connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 35

22

Minimum Speed Trimpot (MIN) Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 39

23

Maximum Speed Trimpot (MAX) Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 39

24

Acceleration Trimpot (ACC) Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 39

25

Deceleration Trimpot (DEC/B) Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 40

26

Slip Compensation Trimpot (COMP) Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 40

 

 

iii

 

TABLE OF CONTENTS (Continued)

 

Figure

Page

27

Boost Trimpot (DEC/B) Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 40

28

Model KBVF-21D Current Limit Trimpot (CL) Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 43

29

Model KBVF-22D Current Limit Trimpot (CL) Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 43

30

Models KBVF-13, 23, 23D Current Limit Trimpot (CL) Range . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 43

31

Models KBVF-14, 24, 24D Current Limit Trimpot (CL) Range . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 43

32

Model KBVF-26D Current Limit Trimpot (CL) Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 43

Items Included in this Package:

KBVF Adjustable Frequency Drive, KBVF Series Installation and Operation Manual, Main Speed Potentiometer Kit with Insulator and Mounting Hardware, Main Speed Potentiometer Terminals

(3 Orange), Motor and AC Line Terminals (5 Blue), 2-Wire and 3-Wire Connector Kit, Status Indicator Label, Trimpot Adjustment Tool, CE Approved Product Information Card, Warranty Registration Card.

iv

 

 

FIGURE 1 – QUICK-START CONNECTION DIAGRAM

Ground (Earth):

 

 

 

 

 

 

 

 

 

AC Line Input Voltage Selection

see Section 9.2,

Chassis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Dual Voltage Models Only):

on page 31.

 

 

 

 

 

 

 

 

 

see Section 6.1, on page 24.

 

U

 

 

 

 

 

 

 

 

Adjustable Trimpots:

 

 

 

 

 

 

 

 

 

see Section 13, on pages 38 – 43.

 

 

 

 

 

 

 

 

 

COMP

 

 

MOTOR

 

115V

 

 

 

 

 

Motor

V

 

B-

 

 

 

 

ACC

Main Speed Potentiometer (5 KΩ)

 

 

230V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Supplied) (Front View):

 

 

 

 

 

J1

 

 

 

DEC/B

Motor Connection:

W

 

 

 

 

 

 

see Section 9.4, on pages 31 and 32.

 

 

 

 

 

 

 

 

see Section 9.3,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIN

 

on page 31.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L1

LINE AC

 

 

 

 

 

 

MAX

 

 

 

 

 

 

 

 

 

 

CL

High

 

L2

 

 

 

 

 

P3

 

 

 

 

 

 

 

 

 

 

Wiper

 

 

 

 

 

ST

 

 

 

 

Single-Phase, 50/60 Hz

 

B+

 

PWR

 

P2

 

 

Low

 

 

 

50/60Hz

 

 

 

 

 

 

 

 

J1

P1

 

 

AC Line Input:

 

 

 

 

CON2

 

 

on page 30.

 

 

 

CON3

J2

X2X1

CON1

-S-FR

see Section 12, on pages 37 and 38.

 

 

 

A/M

see Section 9.1,

 

 

 

 

 

 

 

 

 

Diagnostic LEDs:

 

 

 

 

 

 

 

 

 

 

Voltage Following Signal Input

 

 

 

 

 

 

 

 

 

 

in Lieu of Main Speed Potentiometer:

 

 

 

 

 

 

 

 

 

 

see Section 9.5, on pages 32 and 33.

Communication Port for Accessories and Programming:

 

 

 

 

 

 

 

 

see Section 3.5, on page 13.

 

 

 

 

 

 

 

 

Forward/Reverse Speed Selection:

 

 

 

 

 

 

 

 

 

 

see Section 6.4, on page 27.

For 60 Hz or 50 Hz Motor Operation:

Automatic Start:

Forward-Stop-Reverse Switch Connection:

see Section 6.2.1, on page 25.

see Section 6.3, on page 26.

see Section 9.7, on page 34.

For Two Times the Rated Motor RPM:

Manual Start Switch Connection:

Enable Switch Connection,

see Section 6.2.2, on pages 25 and 26.

see Section 9.6, on page 33.

see Section 9.8, on pages 34 and 35.

5

1 QUICK-START INSTRUCTIONS

Important – You must read these simplified instructions before proceeding. These instructions are to be used as a reference only and are not intended to replace the details provided herein. You must read the Safety Warning on, pages 8 and 9, before proceeding.

See Figure 1 on page 5. Also see Section 4 – Important Application Information, on pages 20 – 22.

WARNING! Disconnect main power when making connections to the drive.

1.1AC Line Connection – Wire the single-phase AC line input to Terminals “L1” and “L2”, as shown in Figure 16, on page 31. See Section 9.1, on pages 30 and 31.

Application Note: Do not wire this drive to a GFCI. If operation with a GFCI is required, contact our Sales Department.

Models KBVF-13, 14 – Rated for 115 Volt AC line input only.

Models KBVF-23, 24 – Rated for 208/230 Volt AC line input only.

Models KBVF-21D, 22D, 23D, 24D, 26D* – Rated for 208/230 Volt AC line input with Jumper J1 (on upper PC board) set to the “230V” position (factory setting). Rated for 115 Volt AC line input with Jumper J1 (on upper PC board) set to the “115V” position ).

*On Model KBVF-26D, Jumper J1 is labeled “115VAC” and “230VAC”.

1.2Ground Connection – Connect the ground wire (earth) to the ground screw, as shown in Figure 16, on page 31. See Section 9.2, on page 31.

Note: Model KBVF-21D, due to its double insulated design, does not contain a ground screw.

6

1.3AC Line Fusing – It is recommended that a fuse(s) or circuit breaker be installed in the AC line. Fuse each conductor that is not at ground potential. For the recommended fuse size, see Table 1, on page 14. Also see Section 10, on page 35.

1.4Motor Connection – Wire the motor to quick-connect Terminals “U”, “V”, “W”, as shown in Figure 16, on page 31. (Special reactors may be required for cable lengths over 100 ft. (30 m)

– consult our Sales Department.) See Section 9.3, on page 31.

Note: The drive is programmed to operate 3-phase AC induction motors. For PSC motors,

optional software is required – contact our Sales Department.

1.560 Hz and 50 Hz Motor Operation (Jumpers J1 and J2 On the Lower PC Board) – The drive is factory set for 60 Hz motor operation (Jumper J1 set to the “60Hz” position and Jumper J2 set to the “X1” position). For 50 Hz motor operation, set Jumper J1 to the “50Hz” position and be sure Jumper J2 is set to the “X1” position. See Section 6.2.1, on page 26.

1.6Trimpot Settings – All trimpots have been factory set for most applications, as shown in Figure 4, on page 20. Some applications require adjustment of the trimpots in order to tailor the drive for a specific requirement. See Section 13, on pages 38 – 43.

1.7Main Speed Potentiometer Connection – For unidirectional speed operation, wire the 5 kΩ potentiometer (supplied) to Terminals “P1” (low), “P2” (wiper), “P3” (high). See Section 9.4, on pages 31 and 32.

1.8Voltage Following – An isolated* 0 – 5 Volt DC analog signal input can be used to control motor speed in lieu of the Main Speed Potentiometer. The drive output will linearly follow the analog signal input. Connect the signal input positive lead (+) to Terminal “P2” and the negative lead (–) to Terminal “P1”. See Section 9.5, on pages 32 and 33.

*If a non-isolated signal is used, install the SIVFR — Signal Isolator (Part No. 9597). The SIVFR

accepts voltage (0 to ±2.5 thru 0 to ±25 Volts DC) or current (4 – 20 mA DC) signal inputs.

See Section 3.5, on page 13.

7

Note: For signal following operation, the Minimum Speed Trimpot (MIN) must be set fully counterclockwise.

WARNING! The signal input must be isolated from the AC line. Earth grounding signal wiring will damage the drive and void the warranty. It is recommended that

the SIVFR — Signal Isolator and Run/Fault Relay (Part No. 9597) be installed when using signal following.

2SAFETY WARNING

Definition of Safety Warning Symbols

Electrical Hazard Warning Symbol – Failure to observe this warning could result in electrical shock or electrocution.

Operational Hazard Warning Symbol – Failure to observe this warning could result in serious injury or death.

8

This product should be installed and serviced by a qualified technician, electrician, or electrical maintenance person familiar with its operation and the hazards involved. Proper installation, which includes installation of the Finger-Safe Cover, wiring, mounting in proper enclosure, fusing or other current protection, and grounding can reduce the chance of electrical shocks, fires, or explosion in this product or products used with this product, such as electric motors, switches, coils, solenoids, and/or relays. Eye protection must be worn and insulated adjustment tools must be used when working with drive under power. This product is constructed of materials (plastics, metals, carbon, silicon, etc.) which may be a potential hazard. Proper shielding, grounding, and filtering of this product can reduce the emission of radio frequency interference (RFI) which may adversely affect sensitive electronic equipment. It is the responsibility of the equipment manufacturer and individual installer to supply this Safety Warning to the ultimate end user of this product. (SW/FSC 5/2005) Be sure to follow all instructions carefully. Fire and/or electrocution can result due to improper use of this product.

This product complies with all CE directives pertinent at the time of manufacture. Contact our Sales Department for Declaration of Conformity. Installation of a CE approved RFI filter is

required. See RFI Filters & Chokes Selection Guide D-321 (Part No. A42027) for selection of filters to meet the Industrial or Residential Standard. Additional shielded cable and/or AC line cables may be required along with a signal isolator (SIVFR (Part No. 9597)).

3INTRODUCTION

Thank you for purchasing the KBVF Adjustable Frequency Drive. KB Electronics, Inc. is committed to providing total customer satisfaction by producing quality products that are easy to install and operate. The KBVF is manufactured with surface mount components incorporating advanced circuitry and technology. A Finger-Safe Cover is included for added liability protection.

9

The KBVF Adjustable Frequency Drives provide variable speed control for standard 3-phase and Permanent Split Capacitor (PSC)1 AC induction motors from subfractional thru 112 HP. This manual covers models with single-phase AC line input only. The sine wave coded Pulse Width Modulated (PWM) output 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 KBVF AC drive is easy to install and operate. Tailoring to specific applications is accomplished with selectable jumpers and trimpots, which eliminate the computerlike 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 I2 t Motor Overload Protection.2 In addition, Adjustable Slip Compensation with Static Auto-Tune and Boost provides high torque and 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.3 The drive is suitable for machine or variable torque (HVAC) applications. With optional Drive-Link™ software, the drive can be programmed for DC Injection Braking.

For AC line and motor wiring, quick-connect terminals are provided. Other features include: adjustable trimpots (MIN, MAX, ACC, DEC/B4, COMP CL), customer selectable jumpers (AutomaticManual Start, Motor Frequency, Frequency Multiplier, Forward/Reverse, and Line Voltage (dual voltage models only)). Diagnostic LEDs are provided for power (PWR) and drive status (ST). A 5 kΩ Main Speed Potentiometer is also included.

A Signal Isolator is optional on all models, which can be used for single-ended or bidirectional speed control and accepts voltage or current signal input. Other optional accessories include: Class “A” and “B” AC Line Filters, Dynamic Brake Module, Multi-Speed Board, Programming Kit, and Modbus Communication Module. A connector is provided for easy installation of accessories.

10

Notes: 1. Optional software is required for PSC motors — contact our Sales Department. 2. UL approved as an electronic overload protector for motors. 3. Models KBVF-21D, 22D contain ICL in lieu of EICL™. 4. In 50 Hz Mode, the DEC/B Trimpot automatically becomes Adjustable Boost.

3.1Standard Features

Simple to Operate – Does not require programming. Uses trimpots and jumpers, which are factory set for most applications.

Diagnostic LEDs – Power on (PWR) and drive status (ST). See Sec. 12, on pgs. 37 & 38.

Jumper Selection of Drive Output Frequency – Increases the motor speed up to two times the rated RPM. See Section 6.2, on pages 25 and 26.

Industry Standard Mounting. See Section 7, on pages 27 and 28.

Finger-Safe Cover – Meets IP-20 standard. See Section 5, on pages 22 and 23.

Note: GFCI Operation – This control can operate with GFCIs (optional software required).

3.2Performance 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

3.3Protection Features

Motor Overload (I2 t) with RMS Current Limit – Provides motor overload protection which prevents motor burnout and eliminates nuisance trips. UL approved as an electronic overload protector for motors. See Section 4.2, on pg. 22, and Section 13.7, on pgs. 42 & 43.

Electronic Inrush Current Limit (EICL™) – Eliminates harmful inrush AC line current

during startup. Models KBVF-21D, 22D contain ICL in lieu of EICL™.

11

Short Circuit – Prevents drive failure if a short circuit occurs at the motor (phase-to-phase).

Motor Filter – Reduces harmful voltage spikes to the motor.

Regeneration – Eliminates nuisance tripping due to bus overvoltage 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.

Microcontroller Self Monitoring and Auto-Reboot.

3.4Trimpot Adjustments

Minimum Speed (MIN) – Sets the minimum speed of the motor. See Sec. 13.1, on pg. 39.

Maximum Speed (MAX) – Sets the maximum speed of the motor. See Sec. 13.2, on pg. 39.

Acceleration (ACC) – Sets the amount of time for the motor to accelerate from zero speed to full speed. See Section 13.3, on page 39.

Deceleration (DEC/B) – Sets the amount of time for the motor to decelerate from full speed to zero speed. See Section 13.4, on pages 39 and 40.

Slip Compensation (COMP) – Maintains set motor speed under varying loads. See Section 13.5, on pages 40 and 41.

Boost (DEC/B) – In 50 Hz mode, the trimpot automatically becomes Adjustable Boost, which can be used to set the Volts/Hz Curve for 50 Hz motors to obtain maximum performance. In 50 Hz Mode, the deceleration time is automatically set to the same as the acceleration time. See Section 13.6, on pages 41 and 42.

Current Limit (CL) – Sets the current limit (overload) which limits the maximum current (torque) to the motor. See Section 13.7, on pages 42 and 43.

12

3.5Optional Accessories

SIVFR — Signal Isolator and Run/Fault Relay (Part No. 9597) – Provides isolation between a non-isolated signal voltage (0 to ±2.5 thru 0 to ±25 Volts DC) or current source (4 – 20 mA DC) and the drive. Can be used in single-ended or bidirectional mode. Run/Fault Relay Output Contacts are also 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 a fault has occurred. Mounts on the end of the drive.

DBVF — Dynamic Brake Module (Part No. 9598) – Provides up to 25% continuous braking and 200% instantaneous braking torque (maximum 1 HP (.75 kW)).

Multi-Speed Board (Part No. 9503) – Provides multi-speed operation using external contacts or a PLC. Mounts on the end of the drive.

Programming Kit (Part No. 9582) – Includes DownLoad Module™ (DLM) handheld programming device which uploads and downloads drive programs, PC to DLM serial communication cable, DLM to inverter communication cable, and PC Windows® based DriveLink™ communication software.

DIVF — Modbus Communication Module (Part No. 9568) – Allows the drive to communicate with PLCs, PCs, and HMIs with Modbus RTU protocol utilizing a serial communication cable. If a USB communication cable is required, purchase Part No. 19008.

RFI Filters and Chokes – Provide RFI and EMI Suppression. They comply with CE Council Directive 89/336/EEC relating to the Class A Industrial and Class B Residential Standards. See RFI Filters and Chokes Selection Guide Publication No. D-321 (Part No. A42027).

Custom Software – All models can be factory programmed for applications that require special switching, timing, PLC functions, and GFCI operation — contact our Sales Department.

13

TABLE 1 – ELECTRICAL RATINGS

 

 

AC Line Input

 

 

Drive Output

 

Fuse or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

Maximum

 

Circuit

Net Wt.

 

 

 

 

Maximum

Range

Continuous

Maximum

Breaker

 

 

 

Phase

 

 

 

Part

Volts AC

Current

(Nominal)

Load Current

Horsepower

Rating

 

 

Model

No.

(50/60 Hz)

(φ)

(Amps AC)

(Volts AC)

(RMS Amps/Phase)

(HP (kW))

(Amps)

lbs

kg

 

 

 

 

 

 

 

 

 

 

 

KBVF-21D

9581

115

1

4.0

0 – 230

1.0

1/10 (.07)

5

0.7

0.3

 

 

 

208/230

1

2.5

 

 

 

 

 

 

 

 

KBVF-22D

9572

115

1

6.0

0 – 230

1.5

1/4 (.18)

10

1.3

0.6

 

 

 

 

 

 

208/230

1

3.8

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KBVF-13

9957

115

1

11.0

0 – 230

2.4

1/2 (.37)

15

1.3

0.6

 

 

 

 

 

 

 

 

 

 

 

KBVF-23

9958

208/230

1

7.0

0 – 230

2.4

1/2 (.37)

10

1.3

0.6

 

 

 

 

 

 

 

 

 

 

 

KBVF-23D

9959

115

1

11.0

0 – 230

2.4

1/2 (.37)

15

1.3

0.6

 

 

 

 

208/230

1

7.0

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KBVF-14

9977

115

1

16.0

0 – 230

4.0

1 (.75)

20

2.2

1.0

 

 

 

 

 

 

 

 

 

 

 

KBVF-24

9978

208/230

1

10.0

0 – 230

4.0

1 (.75)

15

2.2

1.0

 

 

 

 

 

 

 

 

 

 

 

KBVF-24D

9979

115

1

16.0

0 – 230

4.0

1 (.75)

20

2.2

1.0

 

 

 

 

208/230

1

10.0

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KBVF-26D*

9496

115

1

22.0

0 – 230

5.5

11⁄2 (1.13)

25

2.9

1.3

208/230

1

14.0

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Model KBVF-26D is rated 2 HP (1.5 kW) for most Premium Efficient motors.

Note: All models contain Motor Filter and Quick-Connect Terminals for AC line and motor wiring. The Signal Isolator and Run/Fault Relay is optional on all models.

14

TABLE 2 – GENERAL PERFORMANCE SPECIFICATIONS

 

 

 

 

Factory

Description

Specification

Setting

 

 

 

 

115 Volt AC Line Input Voltage Operating Range (Volts AC)

115

(±15%)

 

 

 

208/230 Volt AC Line Input Voltage Operating Range (Volts AC)

208 (–15%) / 230 (+15%)

 

 

 

 

Maximum Load (% Current Overload for 2 Minutes)

 

150

 

 

 

Carrier, Switching Frequency (kHz)

16, 8

 

 

 

 

Signal Following Input Voltage Range1 (Volts DC)

0

– 5

Output Frequency Resolution (Bits, Hz)

10, .06

 

 

 

 

Minimum Speed Trimpot (MIN) Range (% Frequency Setting)

0

– 40

0

Maximum Speed Trimpot (MAX) Range (% Frequency Setting)

70

– 110

100

 

 

 

Acceleration Trimpot (ACC) and Deceleration Trimpot (DEC/B) Range (Seconds)

.3 – 20

1.5

Boost Trimpot (DEC/B) Range (50 Hz Only) (Volts/Hz)

0

– 30

5

 

 

 

 

Slip Compensation Trimpot (COMP) Range at Drive Rating (Volts/Hz)

0

– 3

1.5

Current Limit Trimpot (CL) Range (Amps AC): KBVF-21D

.65

– 1.8

1.6

 

 

 

 

KBVF-22D

1.0

– 2.8

2.4

 

 

 

 

KBVF-13, 23, 23D

1.5

– 4.5

3.8

 

 

 

 

KBVF-14, 24, 24D

2.5

– 7.5

6.4

 

 

 

 

KBVF-26D

3.5

– 10.5

8.8

 

 

 

Motor Frequency Setting (Hz) (Jumper J1)

50, 60

60

 

 

 

 

Output Frequency Multiplier (X1, X2) (Jumper J2)2

 

1, 2

1

Minimum Operating Frequency at Motor (Hz)

 

 

1

 

 

 

Speed Range (Ratio)

60:1

Speed Regulation (30:1 Speed Range, 0 – Full Load) (% Base Speed)3

 

2.5

Overload Protector Trip Time for Stalled Motor (Seconds)

 

 

6

AC Line Input Undervoltage/Overvoltage Trip Points for 115 Volt AC Line (±5%) (Volts AC)4

76

– 141

AC Line Input Undervoltage/Overvoltage Trip Points for 208/230 Volt AC Line (±5%) (Volts AC)4

151

– 282

Operating Temperature Range (°C / ºF)

0 – 45 / 32 – 113

 

 

 

 

 

Notes: 1. If a non-isolated signal is used, install the SIVFR – Signal Isolator (Part No. 9597). 2. Allows the motor to operate up to two times the rated RPM. Constant motor horsepower will result when operating the drive in the “X2” mode above the motor rated frequency. 3. Dependent on motor performance. 4. Do not operate the drive outside the specified AC line input voltage operating range.

15

FIGURE 2A – MODELS KBVF-21D, 22D, 13, 23, 23D MECHANICAL SPECIFICATIONS &

CONTROL LAYOUT (Inches/mm) – (Model KBVF-22D Shown)

(See Figure 4, On Page 20, for Expanded View of Jumpers and Trimpots)

 

 

 

 

 

3.90

 

 

 

 

 

 

 

 

99.0

 

 

 

0.25

 

 

 

3.00

 

 

 

 

 

6.4

 

 

 

76.2

 

 

 

 

 

(2 Places)

1.25

 

 

 

 

 

 

 

0.5

31.8

 

 

 

 

 

 

 

 

 

 

 

0.2

(10 Places)

 

 

12.7

 

 

 

 

5.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

L1

 

W

V

U

 

 

 

 

 

ACLINE

 

 

 

MOTOR

4.30

 

 

 

 

 

 

 

 

 

109

 

 

 

 

 

 

 

 

 

3.80

 

 

B+

 

 

 

 

 

 

96.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-B

 

CON3

 

PWR

ST

 

 

230V

115V

 

 

 

 

 

 

 

J2

 

50/60Hz

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

X1

X2

J1

 

 

 

 

 

 

 

 

CON1

P1

P2

P3

 

 

 

 

 

A/M

CON2

 

 

 

 

 

 

 

 

F - S - R

 

 

CL

MAX

MIN

DEC/B

ACC

COMP

16

Top View Shown without Finger-Safe Cover Installed

FIGURE 2B – MODELS KBVF-21D, 22D, 13, 23, 23D MECHANICAL SPECIFICATIONS

(Inches/mm) – (Model KBVF-22D Shown)

(See Figure 4, On Page 20, for Expanded View of Jumpers and Trimpots)

FINGER-SAFE COVER RETAINING CLIPS*

0.2

5.1

(2 Places)

See

Chart

3.80

96.5

0.95

24.1

Side View Shown with Finger-Safe Cover Installed

Maximum Height

Model KBVF-21D

Models KBVF-22D, 13, 23, 23D

2.302.75

59

70

* Model KBVF-21D contains internal retaining clips.

17

FIGURE 3A – MODELS KBVF-14, 24, 24D, 26D MECHANICAL SPECIFICATIONS (INCHES/MM) (Model KBVF-26D Shown with Finger-Safe Cover Installed)

(See Figure 4, On Page 20, for Expanded View of Jumpers and Trimpots)

3.90

 

0.4

(2 Places)

0.08

99.0

10.2

2.0

 

 

 

 

 

(2 Places)

FINGER-SAFE COVER RETAINING CLIPS

 

 

 

 

 

1.32

 

 

 

 

33.5

 

 

 

 

 

3.07

 

 

 

77.9

 

 

 

 

3.82

 

 

 

 

97.0

 

DO NOT USE

 

 

 

See

THESE FOUR

 

 

 

RETAINING CLIPS

 

 

 

Chart A

 

 

 

 

on page 19

 

0.2

(6 Places)

 

 

5.1

 

 

 

 

 

FINGER-SAFE COVER RETAINING CLIPS

 

 

 

 

18

FIGURE 3B – MODELS KBVF-14, 24, 24D, 26D MECHANICAL SPECIFICATIONS (INCHES/MM)

(Model KBVF-26D Shown with Finger-Safe Cover Installed)

(See Figure 4, On Page 20, for Expanded View of Jumpers and Trimpots)

Chart A - Maximum Length

Chart B - Maximum Height

Models KBVF-14, 24, 24D

Model KBVF-26D

Models KBVF-14, 24, 24D

Model KBVF-26D

4.30

5.70

5.00

4.50

109

145

127

114

 

 

4.70

 

 

 

119

 

See

 

 

 

Chart B

 

 

 

4.40

 

 

 

112

 

 

 

FINGER-SAFE COVER RETAINING CLIPS

19

 

FIGURE 4 – EXPANDED VIEW OF JUMPERS AND TRIMPOTS

CON3

J2 50/60Hz

X1

X2

 

J1

 

 

CON1

P1

 

 

 

 

 

A/M

 

CON2

 

 

 

 

 

 

 

 

F - S - R

230V 115V

ST

PWR

J1

P2

P3

 

 

 

 

 

 

CL

MAX

MIN

DEC/B

ACC

COMP

Jumpers and Trimpots

Line Voltage Selection Jumper J1

(Shown in Factory Setting)

(Located on Upper PC Board)

(Located on Lower PC Board)

(Models KBVF-21D, 22D, 23D, 24D, 26D Only)

4IMPORTANT APPLICATION INFORMATION

4.1Motor with External Fan Cooling – Most totally enclosed fan-cooled (TEFC) and open ventilated 3-phase AC induction motors will overheat if used beyond a limited speed range at full torque. Therefore, it is necessary to reduce motor load as speed is decreased.

Note: Some fan-cooled motors can be used over a wider speed range. Consult the motor manufacturer for details.

WARNING! Some motors have low speed characteristics which cause overheating and winding failure under light load or no load conditions. If the motor is operated in this

manner for an extended period of time, it is recommended that the unloaded motor current be checked from 2–15 Hz (60 – 450 RPM) to ensure motor current does not exceed the nameplate rating. Do not use motor if the motor current exceeds the nameplate rating.

20

It is recommended that the drive be

used with Inverter Duty or TENV motors.

Inverter duty and most totally enclosed nonventilated (TENV) motors can provide full rated torque over an extended speed range without overheating. See Figure 5.

If external fan cooling is provided, open ventilated motors can also achieve an extended speed range at full rated torque. A box fan or blower with a minimum of 100 CFM is recommended. Mount the fan or blower so the motor is surrounded by the airflow. See Figure 6.

FIGURE 5 – MAXIMUM ALLOWED MOTOR TORQUE VS. SPEED

 

100

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

Maximum Allowed

60

 

 

 

 

 

 

 

 

 

 

 

 

 

Inverter Duty

 

 

 

 

Fan Cooled

 

 

40

 

 

and TENV Motors

 

TEFC and Open Ventilated Motors

 

 

 

 

 

 

 

 

 

 

 

TorqueMotor(%)

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

0

10

20

30

40

50

60

70

80

90

100

 

0

Motor Speed (%)

FIGURE 6 – OPEN VENTILATED MOTOR WITH EXTERNAL COOLING

 

Airflow

Open Ventilated Motor

Fan or Blower

(100 CFM Min.)

 

 

21

4.2Electronic Motor Overload Protection – The drive contains Modified I2 t Overload Protection.* Part of this function consists of a Current Limit (CL) circuit, which limits the drive current to a factory preset level of 160% of the rated drive current. The CL Trimpot is used to recalibrate the drive current from 60% thru 200%. The Power Start™ circuit provides an overshoot function that allows most motors to develop more than 200% of starting torque and breakdown torque.

Standard I2 t is undesirable because it causes nuisance tripping. It allows a very high motor current to develop and will turn the drive off after a short period of time. KB’s RMS Current Limit Circuit avoids this nuisance tripping while providing maximum motor protection.

If the motor is overloaded to 120% of full load (75% of the CL setting), the I2 t Timer starts. If the motor continues to be overloaded at the 120% level, the timer will shut down the drive after 30 minutes. If the motor is overloaded to 160% of full load, the drive will trip in 6 seconds.

*UL approved as an overload protector for motors.

5FINGER-SAFE COVER

The drive is designed with an IP-20 Finger-Safe Cover which provides protection against accidental contact with high voltage.

WARNING! Disconnect main power when removing or installing the Finger-Safe Cover.

WARNING! To prevent accidental contact with high voltage, it is required that the Finger-Safe Cover be properly installed onto the drive after all wiring and setup is complete. It offers protection against electric shock which limits the potential liability to the equipment manufacturer and installer.

22

5.1Removing the Finger-Safe Cover – The Finger-Safe Cover may have to be removed before wiring the drive or setting selectable jumpers. All trimpots can be readjusted with the FingerSafe Cover installed. Notice the orientation of the Finger-Safe Cover before removing it.

Note: The Finger-Safe Cover (except that of the KBVF-21D) is designed with a removable panel (on the trimpots side) which must be removed for installation of optional accessories SIVFR Signal Isolator and Run/Fault Relay (Part No. 9597) or Multi-Speed Board (Part No. 9503). Complete instructions are provided with the accessories.

Model KBVF-21D – Designed with three “push-ins” (instead of retainer clips) located where the Finger-Safe Cover aligns with the base. To remove the cover, gently press at the three push-ins until the cover disengages from the base.

Models KBVF-22D, 13, 23, 23D, 14, 24, 24D, 26D – To remove the Finger-Safe Cover, gently lift up on the four retainer clips until the cover disengages from the base. See Figures 2B and 3A, on pages 17 and 18.

Note: On Model KBVF-26D, the inner bus capacitor support bracket should not be removed.

5.2Installing the Finger-Safe Cover – To install the Finger-Safe Cover, be sure to properly align the retainer clips or push-ins. Gently push the Finger-Safe Cover onto the base until the retainer clips or push-ins are fully engaged with the base.

6SETTING SELECTABLE JUMPERS

The drive has customer selectable jumpers which must be set before the drive can be used. For the location of jumpers, see Figure 4, on page 20.

23

6.1 AC Line Input Voltage Selection

 

 

 

 

 

FIGURE 7 – MODELS KBVF-21D, 22D, 23D, 24D

(Jumper J1 (Models KBVF-21D,

 

 

 

 

 

 

 

AC LINE INPUT VOLTAGE SELECTION

22D, 23D, 24D, 26D Only)) –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

230 Volt AC Line Input

 

 

 

 

 

 

 

 

 

 

 

 

 

Jumper J1 is factory set to the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Factory Setting)

115 Volt AC Line Input

 

 

 

 

 

 

 

 

 

“230V” position for 208/230 Volt

 

 

 

(J1 Installed in “230V” Position)

(J1 Installed in “115V” Position)

AC line input. For 115 Volt AC line

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

input, set Jumper J1 to the

 

 

 

 

 

 

 

230V 115V

 

 

 

 

 

 

230V 115V

“115V” position. Jumper J1 is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

located on the upper PC board.

 

 

 

 

J1

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

See Figures 7 and 8.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For 115 Volt AC line input, on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model KBVF-26D, the jumper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

must be removed and

FIGURE 8 – MODEL KBVF-26D AC LINE INPUT VOLTAGE SELECTION

installed onto the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

230 Volt AC Line Input

 

 

 

 

 

 

 

 

 

 

 

 

 

“115VAC” position. Using

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Factory Setting)

 

 

115 Volt AC Line Input

pliers, gently rock the

 

 

(J1 Installed in “230VAC” Position)

(J1 Installed in “115VAC” Position)

female terminal back and

 

 

 

 

 

 

230VAC

 

 

 

 

 

 

230VAC

forth vertically while

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pulling it upward. See

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 9, on page 25.

 

 

J1

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

115VAC

 

 

 

 

 

 

 

 

115VAC

 

 

 

For 115 Volt AC Line Input,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

remove this terminal and

Do not remove

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

install it onto the "115VAC" position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

this terminal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24

6.260Hz and 50 Hz Motor Operation and Drive Output Frequency Selection (Jumpers J1 and J2) – Both jumpers must be set for the appropriate motor nameplate frequency rating. Jumpers J1 and J2 are located on the lower PC board.

6.2.1Setting the Drive for 60 Hz or 50 Hz Motor Operation – The drive is factory set to operate 60 Hz motors. Jumper J1 is factory set to the “60Hz” position and Jumper J2 is factory set to the “X1” position. For 50 Hz motors, set Jumper J1 to the “50Hz” position, and be sure Jumper J2 is set to the “X1” position. Jumpers J1 and J2 are located on the lower PC board. See

Figure 10.

FIGURE 9 – REMOVING JUMPER J1

ON MODEL KBVF-26D

Terminal

Removed

Terminal

Installed

6.2.2Setting the Drive for Two Times the Rated Motor RPM – The drive can also be used to operate the motor up to two times the rated RPM. However, constant horsepower will result when operating the drive in the “X2” mode above the motor rated frequency. See Figure 11, on page 26.

FIGURE 10 – 60 Hz & 50 Hz MOTOR SELECTION

 

60 Hz Motor Operation

 

 

 

 

 

 

 

(Factory Setting)

 

50 Hz Motor Operation

(J1 Installed in “60Hz” Position)

(J1 Installed in “50Hz” Position)

(J2 Installed in “X1” Position)

(J2 Installed in “X1” Position)

 

 

 

 

 

 

 

 

 

 

J2

50/60Hz

 

 

J2

50/60Hz

 

 

 

 

 

 

 

 

 

 

 

X1

X2

J1

 

X1

X2

J1

 

 

 

 

 

 

 

 

 

 

25

For 120 Hz output with 60 Hz motor, be sure Jumper J1 is set to the “60Hz” position and set Jumper J2 to the “X2” position. For 100 Hz output with 50 Hz motor, set Jumper J1 to the “50Hz” position and set Jumper J2 to the “X2” position. See Figure 12.

6.3Automatic Start (CON1) –

The drive is factory set for Automatic Start (jumper installed onto CON1), as shown in Figure 13, on page 27. CON1 is located on the lower PC board. The drive will automatically start when power

is applied and a run command is given. The drive will automatical-

ly restart after a recovered fault due to undervoltage, overvoltage, or short circuit.

FIGURE 11 – AVAILABLE TORQUE vs. OUTPUT FREQUENCY

 

100

 

Torque

50

 

%

 

 

 

0

 

 

0

2

50/60

100/120

Output Frequency (Hz)

FIGURE 12 – 120 Hz & 100 Hz

DRIVE OUTPUT FREQUENCY SELECTION

120 Hz Output with 60 Hz Motor

100 Hz Output with 50 Hz Motor

(J1 Installed in “60Hz” Position)

(J1 Installed in “50Hz” Position)

 

(J2 Installed in “X2” Position)

 

(J2 Installed in “X2” Position)

 

 

 

 

 

 

 

 

 

 

J2

50/60Hz

 

 

J2

50/60Hz

 

 

 

 

 

 

 

 

 

 

 

X1

X2

J1

 

X1

X2

J1

 

 

 

 

 

 

 

 

 

 

26

For an I2 t Trip, due to a prolonged overload, the drive must be manually restarted. See Section 11.2, on page 36. Also see Section 12.2, on pages 37 and 38.

For Manual Start, a momentary contact must be installed onto CON1, as described in Section 9.6, on pages 33 and 34.

FIGURE 13 – AUTOMATIC START

(Jumper Installed)

CON1

A/M

6.4Forward/Reverse Speed Selection (CON2) – The drive is factory set for Forward Speed Operation (jumper installed in the “F” position of CON2). CON2 is located on the lower PC board. For Reverse Speed Operation, install the jumper in the “R” position. See Figure 14.

FIGURE 14 – FORWARD/REVERSE SPEED SELECTION

Forward Speed Operation

 

 

 

 

(Factory Setting)

Reverse Speed Operation

(Jumper Installed in “F” Position)

(Jumper Installed in “R” Position)

 

 

 

 

 

 

 

 

CON2

 

 

CON2

 

 

 

 

 

F - S - R

 

F - S - R

 

 

 

 

 

 

To wire a Forward-Stop-Reverse Switch, see Section 9.7, on page 34.

7 MOUNTING INSTRUCTIONS

WARNING! This drive must be mounted in an enclosure. Care should be taken to avoid extreme hazardous locations where physical damage to the drive can occur due to moisture, metal chips, dust, and other contamination, including corrosive atmosphere that may be harmful. See Safety Warning on pages 8 and 9. To prevent accidental contact with high voltage, it is required that the Finger-Safe Cover be properly installed onto the drive after all wiring and set up is complete. Do not use this drive in an explosionproof application.

27

Application Note – The enclosure should be large enough to allow for proper heat dissipation so that the ambient temperature does not exceed 45 °C (113 °F). Leave enough room to allow for AC line, motor connection, and other wiring that is required. See Figures 2A, 2B, 3A and 3B, on pages 16 –19.

When mounting the Main Speed Potentiometer, be sure to install the insulating disc between the potentiometer and the panel.

8RECOMMENDED HIGH VOLTAGE DIELECTRIC WITHSTAND TESTING (HI-POT TESTING)

Testing agencies such as UL, CSA, etc., usually require that equipment undergo a hi-pot test. In order to prevent catastrophic damage to the drive, which has been installed in the equipment, the following procedure is recommended. A typical hi-pot test setup is shown in Figure 15, on page 29.

All drives have been factory hi-pot tested in accordance with UL requirements.

Warning! All equipment AC line inputs must be disconnected from the AC power.

8.1Connect all equipment AC power input lines together and connect them to the H.V. lead of the Hi-Pot Tester. Connect the RETURN of the Hi-Pot Tester to the frame on which the drive and other auxiliary equipment are mounted.

8.2The Hi-Pot Tester must have an automatic ramp-up to the test voltage and an automatic ramp-down to zero voltage.

Note: If the Hi-Pot Tester does not have automatic ramping, then the hi-pot output must be manually increased to the test voltage and then manually reduced to zero. This procedure must be followed for each machine being tested. A suggested Hi-Pot Tester is Slaughter Model 2550.

CAUTION! Instantly applying the hi-pot voltage will cause irreversible damage to the drive,

which will void the warranty.

28

 

 

 

FIGURE 15 – TYPICAL HI-POT SETUP

 

High Voltage Dielectric Withstand Tester (Hi-Pot Tester)

 

 

 

 

 

1

2

 

 

 

LEAKAGE

0

 

3

 

 

 

 

 

AC KILOVOLTS

 

 

 

0mA

10mA

 

 

 

 

RETURN

 

TEST

VOLTAGE

 

 

 

H. V.

 

RESET

 

 

 

Connect All Drive Terminals Together

 

 

 

 

 

 

 

 

ZERO

MAX

 

 

(Main Power Disconnected)

 

 

 

 

 

 

 

 

 

Adjustable Frequency Drive

 

AC Line Input

 

 

 

L1

U

 

 

 

 

 

 

 

 

 

 

L2

V

Motor Wires

 

 

 

 

 

 

 

 

 

 

W

Frame

Connect Hi-Pot

 

Auxiliary Equipment

 

 

 

Signal Inputs

 

 

to Both AC Line Inputs

 

 

 

 

 

 

 

 

 

 

 

(Main Power Disconnected)

 

 

L1

P1

 

 

 

 

 

L2

P2

 

 

 

 

 

Chassis

P3

Chassis

 

Machine Equipment or Frame

 

 

 

 

 

29

9 WIRING INSTRUCTIONS

WARNING! Read Safety Warning, on pages 8 and 9, before using the drive. Disconnect main power when making connections to the drive. To avoid electric

shock, be sure to properly ground the drive.

Application Note – To avoid erratic operation, do not bundle the AC line and motor wires with each other or with wires from signal following, start/stop contacts, or any other signal wires. Also, do not bundle motor wires from multiple drives in the same conduit. Use shielded cables on all signal wiring over 12” (30 cm). The shield should be earth grounded on the drive side only. Wire the drive in accordance with the National Electrical Code requirements and other local codes that may apply.

Be sure to properly fuse each AC line conductor that is not at ground potential. Do not fuse neutral or grounded conductors. A separate AC line switch or contactor must be wired as a disconnect so that each ungrounded conductor is opened. For fuse or circuit breaker selection, see Table 1, on page 14. Also see section 10, on page 35.

9.1AC Line Connection – Wire the single-phase AC line input to Terminals “L1” and “L2”. The terminals are located on the upper PC board. See Figure 16, on page 31.

GFCI Operation – Do not connect this drive to an AC power source controlled by a Ground Fault Circuit Interrupter. Special software is available for GFCI operation — contact our Sales Department.

Models KBVF-13, 14 – Rated for 115 Volt AC line input only.

Models KBVF-23, 24 – Rated for 208/230 Volt AC line input only.

Models KBVF-21D, 22D, 23D, 24D, 26D* – Rated for 208/230 Volt AC line input with Jumper J1 set to the “230V” position (factory setting). Rated for 115 Volt AC line input with Jumper J1 set to the “115V” position . Jumper J1 is located on the upper PC board.

30 Note: Be sure Jumper J1 is set to the correct AC line input voltage.

*Note: On Model KBVF-26D, Jumper J1 is labeled “115VAC” and “230VAC”.

9.2Ground Connection –

Connect the ground wire (earth) to the green ground screw. The ground screw is located on the heat sink. See Figure 16.

Note: Model KBVF-21D, due to its double insulated design, does not contain a ground screw.

FIGURE 16 – AC LINE INPUT, MOTOR, & GROUND CONNECTIONS

 

MOTOR

 

AC LINE

 

U

V

W

L1

L2

Chassis

 

 

 

Motor

115, 208/230 Volt *

Ground (Earth)

Single-Phase, 50/60 Hz

 

 

 

 

AC Line Input

9.3Motor Connection – Wire the motor to Terminals “U”, “V”, “W”. The terminals are located on the upper PC board. See Figure 16. Motor cable length should not exceed 100 ft. (30 m) – special reactors may be required – consult our Sales Department.

Note: The drive is programmed to operate 3-phase AC induction motors. For PSC motors, optional software is required – contact our Sales Department.

9.4Main Speed Potentiometer Connection – The drive is supplied with a 5 kΩ Main Speed Potentiometer to control motor speed. Wire the Main Speed Potentiometer to Terminals “P1” (low), “P2” (wiper), “P3” (high). The terminals are located on the lower PC board. See Figure 17, on page 32.

31

WARNING! Do not

FIGURE 17 – MAIN SPEED POTENTIOMETER CONNECTION

earth ground any Main

 

Speed Potentiometer terminals.

Main Speed Potentiometer

 

Note: When mounting the Main

(Supplied) (Front View)

 

Speed Potentiometer, be sure to

 

install the insulating disc (supplied)

 

between the potentiometer and the

P1 P2 P3

panel.

 

9.5 Voltage Following Connection –

Low

An isolated* 0 – 5 Volt DC analog

Wiper

signal input can be used to control

High

motor speed in lieu of the Main

 

Speed Potentiometer. The drive

 

output will linearly follow the analog

signal input. Connect the signal input positive lead (+) to Terminal “P2” and the negative lead

(–) to Terminal “P1”. The terminals are located on the lower PC board. With external circuitry, a 0 – 10 Volt DC analog signal can also be used. See Figure 18, on page 33.

*If a non-isolated signal is used, install the SIVFR — Signal Isolator (Part No. 9597). The SIVFR accepts voltage (0 to ±2.5 thru 0 to ±25 Volts DC) or current (4 – 20 mA DC) signal inputs. See Section 3.5, on page 13.

Note: For signal following operation, the Minimum Speed Trimpot (MIN) must be set fully counterclockwise.

32

WARNING! The signal input must be isolated from the AC line. Earth grounding signal wiring will damage the drive and void the warranty. It is recommended that the SIVFR — Signal Isolator and Run/Fault Relay (Part No. 9597) be installed when using signal following.

9.6

Manual Start Switch

FIGURE 18 – VOLTAGE FOLLOWING CONNECTION

 

Connection (CON1) – The

0 – 5 Volts DC (Isolated)

0 – 10 Volts DC (Isolated)

 

Manual Start Mode is used to

 

 

 

 

 

 

 

 

 

 

manually start the drive or

P1

P2

P3

P1

P2

P3

 

 

 

restart the drive (reset) if a fault

 

 

 

 

 

 

 

 

 

 

 

 

has occurred. To operate the

 

 

 

 

 

 

 

 

 

drive in the Manual Start Mode,

 

+

0 - 5

 

 

10k

+

0 - 10

 

remove the factory installed

 

10k

 

 

 

V

Volts DC

 

 

V

Volts DC

 

jumper on CON1 and install the

 

-

 

 

 

-

 

 

 

 

 

 

 

 

 

 

2-wire connector (supplied).

 

 

 

 

 

 

 

 

 

CON1 is located on the lower

 

 

 

 

 

 

 

 

 

PC board. The connector must be wired to a momentary switch or contact, as shown in

 

Figure 19, on page 34.

 

 

 

 

 

 

 

 

In the Manual Start Mode, the drive will trip due to all faults (Overvoltage, Undervoltage, Short Circuit, and I2 t) and remain tripped even when the fault is cleared. To Start/Reset the drive, the switch or contact must be manually closed. Also, the drive must be restarted each time the AC line is interrupted.

For Automatic Start, see Section 6.3, on pages 26 and 27.

Notes: 1. See Section 11.2, on page 36. Also see Section 12.2, on pages 37 and 38. 2. The drive can be factory programmed for Run/Stop operation with momentary contacts.

33

 

9.7 Forward-Stop-Reverse

 

 

FIGURE 19 – MANUAL START SWITCH CONNECTION

 

Switch Connection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connector Installed for

 

(CON2) – To operate the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Jumper Removed

 

 

 

 

 

 

 

Manual Start Switch

 

 

 

 

 

 

 

 

 

 

 

drive using a Forward-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop-Reverse Switch,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

remove the factory

 

 

 

 

 

 

 

 

 

 

 

 

CON1

Manual Start Switch

 

installed jumper on CON2

 

 

 

CON1

 

 

 

 

 

 

 

 

 

 

(Push to Run)

 

and install the 3-wire con-

 

 

A/M

 

 

 

 

 

 

 

Black

(Momentary Contacts)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nector (supplied). CON2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is located on the lower

 

 

 

 

 

 

 

 

 

 

 

 

White

 

 

 

 

 

 

 

 

 

PC board. The connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

must be wired to a “main-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tained” switch or contact.

 

FIGURE 20 – FORWARD-STOP-REVERSE SWITCH CONNECTION

 

See Figure 20. Also see

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward/Reverse Speed

 

Jumper Removed

 

 

 

 

 

 

 

Connector Installed for

 

Selection, in Section 6.4,

 

 

 

 

Forward-Stop-Reverse Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

on page 27.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CON2

 

 

 

 

 

 

 

 

 

Note: The drive can be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward-Stop-Reverse

 

factory programmed for

 

 

 

 

CON2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Red

 

 

 

Switch

 

momentary contact

 

 

F - S - R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reverse

 

 

 

 

 

 

 

 

 

 

 

Black

 

 

 

 

 

 

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

White

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward

 

9.8 Enable Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connection (CON2) –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The drive can be started and stopped with an Enable Switch (close to run, open to stop).

 

Remove the factory installed jumper on CON2 and install the 3-wire connector (supplied).

 

CON2 is located on the lower PC board. The connector must be wired to a “maintained”

34

switch or contact. See Figure 21, on page 35.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For Forward Enable Operation, wire the switch to the white and black wires. For Reverse Enable Operation, wire the switch to the red and black wires. When the switch is closed, the drive will run. When the switch is opened, the drive will stop.

FIGURE 21 – ENABLE SWITCH CONNECTION

 

Connector Installed for

Connector Installed for

Jumper Removed

Forward Enable Switch

Reverse Enable Switch

 

 

 

 

Reverse

 

CON2

Forward

CON2

Enable Switch

 

(Close to Run)

 

CON2

Enable Switch

 

 

 

(Open to Stop)

 

(Close to Run)

 

F - S - R

Red*

Red

 

Black

(Open to Stop)

 

 

 

Black

 

 

 

 

 

White

 

White*

 

*For Forward Enable Switch connection, the red wire is not used. For Reverse Enable Switch connection, the white wire is not used. The unused wire must be insulated or it may be cut off at the connector.

10AC LINE FUSING

This drive does not contain AC line fuses. Most electrical codes require that each ungrounded conductor contain circuit protection. Do not fuse neutral or ground connections. It is recommended to install a fuse (Littelfuse 326, Buss ABC, or equivalent) or a circuit breaker in series with each ungrounded conductor. Do not fuse motor leads. For the recommended fuse size, see Table 1, on page 14. Wire the drive in accordance with the National Electrical Code requirements and other local codes that may apply to the application.

35

11DRIVE OPERATION

11.1Start-Up Procedure – After the drive has been properly setup (jumpers and trimpots set to the desired positions) and wiring completed, the startup procedure can begin. If the AC power has been properly brought to the drive, the power (PWR) LED will be illuminated green. The status (ST) LED will indicate drive status, as described in Section 11.2. To remove and install the Finger-Safe Cover, see Section 5, on pages 22 and 23.

11.2Fault Recovery – The drive monitors four faults (Undervoltage, Overvoltage, Short Circuit at the motor (phase-to-phase), I2 t). Table 3, describes how the drive will automatically start (factory setting) after the fault has cleared.

Application Note: In Manual Start Mode, the drive must be manually reset for any fault. Use the Manual Start Switch, as described in Section 9.6, on pages 33 and 34. Also see Section 12.2, on pages 37 and 38.

 

TABLE 3 – FAULT RECOVERY AND RESETTING THE DRIVE*

 

 

Fault

Automatic Start Mode (Factory Setting)

 

 

Undervoltage

Drive will automatically start after the bus voltage returns to the operational level or when the

drive is first turned on (power up).

 

 

 

Overvoltage

Drive will automatically start after the bus voltage returns to the operational level.

 

 

Short Circuit

Drive will automatically start after the short circuit is removed.

 

 

I2 t

Drive must be manually restarted.

 

 

*The fault must be cleared before the drive can be reset.

36

11.3Restarting the Drive After an I2 t Fault Has Cleared – The drive can be restarted after an I2 t Fault has cleared by any of the following methods.

Note: If an I2t Fault occurs, the motor may be overloaded. Check the motor current with an AC RMS responding ammeter. Also, the CL setting may be set too low. See Section 13.7, on pages 42 and 43.

1Disconnect and reconnect the AC power (approximately 15 seconds). The “ST” LED must change from quick flashing red to flashing red/yellow.

2Set the Main Speed Potentiometer to zero (fully counterclockwise).

Note: In order to be able to reset the drive by setting the Main Speed Potentiometer to zero, it is necessary to have the MIN Trimpot set to zero (fully counterclockwise).

3Open and close the Enable switch or contact. See Section 9.8, on pages 34 and 35.

12DIAGNOSTIC LEDS

The drive contains two diagnostic LEDs to display the drive’s operational status. See Figure 4, on page 20, for the location of the “PWR” and “ST” LEDs.

12.1Power On (PWR) – The “PWR” LED will illuminate green when the AC line is applied to the drive.

12.2Status LED (ST) – The “ST” LED is a tricolor LED which provides indication of a fault or abnormal condition. The information provided can be used to diagnose an installation problem such as incorrect input voltage, overload condition, and drive output miswiring. It also provides a signal which informs the user that all drive and microcontroller operating parameters are normal. Table 4, on page 38, summarizes the “ST” LED functions.

37

Notes: 1. Slow Flash = 1 second on and 1 second off. Quick Flash = 0.25 second on and 0.25 second off. 2. In Manual Start Mode, when the Overload is removed, before the I2 t times out and trips the drive, the “ST” LED will flash green. 3. In Manual Start Mode, when the Undervoltage or Overvoltage condition is corrected, the “ST” LED will flash Red / Yellow / Green.

Note: The drive is factory set to the Automatic Start Mode. For Manual Start/Rest, see Section 9.6, on pages 33 and 34.

13TRIMPOT ADJUSTMENTS

The drive contains trimpots which are factory set for most applications. See Figure 4, on page 20, for the

TABLE 4 – DRIVE OPERATING CONDITION & STATUS LED INDICATOR

Drive Operating Condition

Flash Rate1 and LED Color

Normal Operation

Slow Flash Green

 

 

Overload (120% – 160% Full Load)

Steady Red2

I2 t (Drive Timed Out)

Quick Flash Red

 

 

Short Circuit

Slow Flash Red

 

 

Undervoltage

Quick Flash Red / Yellow3

Overvoltage

Slow Flash Red / Yellow3

Stop

Steady Yellow

 

 

location of the trimpots and their approximate factory calibrated positions. Some applications may require readjustment of the trimpots in order to tailor the drive for

a specific requirement. The trimpots may be readjusted as described below.

WARNING! If possible, do not adjust trimpots with the main power applied. If adjustments are made with the main power applied, an insulated adjustment tool must be used and safety glasses must be worn. High voltage exists in this drive. Fire and/or electrocution can result if caution is not exercised. Safety Warning, on pages 8 and 9, must be read and understood before proceeding.

38

13.1Minimum Speed (MIN) – Sets the minimum speed of the motor. The MIN Trimpot is factory set to 0% of frequency setting. For a higher minimum speed setting, rotate the MIN Trimpot clockwise. See Figure 22.

13.2Maximum Speed (MAX) – Sets the maximum speed of the motor. The MAX Trimpot is factory set to 100% of frequency setting. For a higher maximum speed setting, rotate the MAX Trimpot clockwise. For a lower maximum speed setting, rotate the MAX Trimpot counterclockwise. See Figure 23.

13.3Acceleration (ACC) – Sets the amount of time for the motor to accelerate from zero speed to full speed. The ACC Trimpot is factory set to 1.5 seconds. For longer acceleration time, rotate the ACC Trimpot clockwise. For more rapid acceleration, rotate the ACC Trimpot counterclockwise. See Figure 24.

Note: Rapid acceleration settings may cause the current limit circuit to activate, which will extend the acceleration time.

13.4Deceleration (DEC/B) – Sets the amount of time for the motor to decelerate from full speed to zero speed. The DEC/B Trimpot is factory set to 1.5 seconds. For longer deceleration time, rotate the DEC/B Trimpot clockwise. For more rapid deceleration, rotate the DEC/B Trimpot counterclockwise. See Figure 25, on page 40.

FIGURE 22 – MINIMUM SPEED

TRIMPOT (MIN) RANGE

 

30

15

35

0

40

% Frequency Setting (Shown Factory Set to 0%)

FIGURE 23 – MAXIMUM SPEED TRIMPOT (MAX) RANGE

 

80

75

90

 

100

70

110

% Frequency Setting (Shown Factory Set to 100%)

FIGURE 24 – ACCELERATION TRIMPOT (ACC) RANGE

10

3

17

1.5

.3

20

Seconds

(Shown Factory Set to 1.5 Seconds)

39

Application Note – On applications with high inertial loads, the deceleration may automatically increase in time. This will slow down the rate of speed of decrease to prevent the bus voltage from rising to the Overvoltage Trip point. This function is called Regeneration Protection. It is recommended that for very high inertial loads that both the ACC and DEC/B Trimpots should be set to greater than 10 seconds.

For rapid stopping, install the optional DBVF — Dynamic Brake Module (Part No. 9598). See Section 3.5, on page 13.

13.5Slip Compensation (COMP) – Sets the amount of Volts/Hz to maintain set motor speed under varying loads. The COMP Trimpot is factory set to 1.5 Volts/Hz, which provides excellent speed regulation for most motors. To increase the slip compensation, rotate the COMP Trimpot clockwise. To decrease the slip compensation, rotate the COMP Trimpot counterclockwise. See Figure 26.

The slip compensation may be adjusted as follows:

1.Wire an AC RMS ammeter in series with one motor phase.

2.Run the motor and set the unloaded speed to approximately 50% (900 RPM on 4-pole 1500/1725 RPM motors).

3.Using a tachometer, record the unloaded speed.

4.Load the motor to the nameplate rated current (Amps AC).

FIGURE 25 – DECELERATION TRIMPOT (DEC/B) RANGE

10

3

17

1.5

.3

20

Seconds

(Shown Factory Set to 1.5 Seconds)

FIGURE 26 – SLIP COMPENSATION

TRIMPOT (COMP) RANGE

1.5

.8 2.3

0

3

Volts/Hz

(Shown Factory Set to 1.5 Volts/Hz)

FIGURE 27 – BOOST TRIMPOT

(DEC/B) RANGE

 

15

8

23

5

 

0

30

Volts/Hz

(Shown Factory Set to 5 Volts/Hz)

40

5.Adjust the COMP Trimpot until the loaded RPM is equal to the unloaded RPM.

6.The motor is now compensated to provide constant speed under varying loads.

13.6Boost (DEC/B) – When the drive is set for 50 Hz Motor Operation (Jumper J1 installed in the “50Hz” position), the DEC/B Trimpot automatically becomes the adjustable BOOST Trimpot.

Most 60 Hz motors conforming to NEMA standards can operate from a preset Volts/Hz curve.

50Hz motors, however, generally differ widely in their characteristics. Therefore, it is necessary to have adjustable Boost to obtain maximum motor performance.

To increase the boost, rotate the BOOST Trimpot clockwise. To decrease the boost, rotate the BOOST Trimpot counterclockwise. See Figure 27, on page 40.

In order for the 50 Hz motor to run properly, the boost must be adjusted. If the application does not require full torque below 10 Hz, the Boost (DEC/B) Trimpot can be conservatively set at 8% (9 o’clock position).

Note: In 50 Hz motor operation, the deceleration time is automatically set to the same as the Acceleration Trimpot (ACC) setting.

WARNING! To avoid motor winding heating and failure, do not overboost the motor.

The Boost (DEC/B)Trimpot may be adjusted as follows:

1.Wire an AC RMS ammeter in series with one motor phase.

2.Run the motor unloaded at approximately 4 Hz (or 120 RPM).

Note: An unloaded motor with excessive boost will draw more current than a partially loaded motor.

41

3.Increase the boost until the ammeter reaches the nameplate rated current (Amps AC).

4.Using the Main Speed Potentiometer, slowly adjust the motor speed over a 0 – 15 Hz (0 – 450 RPM) range. If the motor current exceeds the nameplate rating, decrease the boost setting.

13.7Motor Overload (I2 t) with RMS Current Limit (CL)* – Sets the current limit (overload), which limits the maximum current to the motor, prevents motor burnout, and eliminates nuisance trips. The CL Trimpot is factory set to 160% of the drive rating. To increase the current limit, rotate the CL Trimpot clockwise. To decrease the current limit, rotate the CL Trimpot counterclockwise. See Figures 28 – 32, on page 43.

*UL approved as an electronic overload protector for motors.

In order to ensure that the motor is properly protected with the I2 t feature, it is required that the CL Trimpot be set for 160% of the motor nameplate rating. This is accomplished as follows:

Note: This adjustment must be made within 6 seconds or the I2t Trip will occur.

1.Wire an AC RMS ammeter in series with one motor phase.

2.Set the CL Trimpot fully counterclockwise.

3.Adjust the speed setting to 30% of full speed.

4.Lock the motor shaft and adjust the CL Trimpot to 160% of the motor nameplate rating.

Example: A 1/2 HP motor has a full load current rating of 1.8 Amps. Set the CL Trimpot to 1.8 X 160% = 2.9 Amps.

42

FIGURE 28 – MODEL KBVF-21D CURRENT LIMIT TRIMPOT (CL) RANGE

 

1.3

.95

1.6

.65

1.8

Amps AC

(Shown Factory Set to 1.6 Amps)

FIGURE 30 – MODELS KBVF-13, 23, 23D CURRENT LIMIT TRIMPOT (CL) RANGE

 

3

2.3

3.8

1.5

4.5

Amps AC

(Shown Factory Set to 3.8 Amps)

FIGURE 29 – MODEL KBVF-22D CURRENT LIMIT TRIMPOT (CL) RANGE

 

1.9

1.5

2.4

1

2.8

Amps AC

(Shown Factory Set to 2.4 Amps)

FIGURE 31 – MODELS KBVF-14, 24, 24D CURRENT LIMIT TRIMPOT (CL) RANGE

 

5

3.8

6.4

2.5

7.5

Amps AC

(Shown Factory Set to 6.4 Amps)

FIGURE 32 – MODEL KBVF-26D CURRENT LIMIT TRIMPOT (CL) RANGE

 

7

5.3

8.8

3.5

10.5

Amps AC

(Shown Factory Set to 8.8 Amps)

43

LIMITED WARRANTY

For a period of 18 months from the date of original purchase, KB Electronics, Inc. will repair or replace without charge, devices which our examination proves to be defective in material or workmanship. This warranty is valid if the unit has not been tampered with by unauthorized persons, misused, abused, or improperly installed and has been used in accordance with the instructions and/or ratings supplied. The foregoing is in lieu of any other warranty or guarantee, expressed or implied. KB Electronics, Inc. is not responsible for any expense, including installation and removal, inconvenience, or consequential damage, including injury to any person, caused by items of our manufacture or sale. Some states do not allow certain exclusions or limitations found in this warranty and therefore they may not apply to you. In any event, the total liability of KB Electronics, Inc. under any circumstance, shall not exceed the full purchase price of this product. (rev 2/2000)

COPYRIGHT © 2005 KB Electronics, Inc.

All rights reserved. In accordance with the United States Copyright Act of 1976, no part of this publication may be reproduced in any form or by any means without permission in writing from KB Electronics, Inc. (8/2002)

KB ELECTRONICS, INC.

12095 NW 39th Street, Coral Springs, FL 33065-2516 • (954) 346-4900 • FAX (954) 346-3377 Outside Florida Call Toll Free (800) 221-6570 • info@kbelectronics.com www.kbelectronics.com

(A40288) – Rev. G – 7/2006

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