Rockwell Automation Allen-Bradley 160-AA02 Bedienungsanleitung

Installation Instructions

Wiring and Grounding

Guidelines for

Pulse Width Modulated

(PWM) AC Drives

Important User Information Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Safety Guidelines for the Application,

Installation and Maintenance of Solid State Controls (Publication SGI-1.1

available from your local Rockwell Automation sales office or online at http://

www.rockwellautomation.com/literature) describes some important differences

between solid state equipment and hard-wired electromechanical devices.

Because of this difference, and also because of the wide variety of uses for solid

state equipment, all persons responsible for applying this equipment must

satisfy themselves that each intended application of this equipment is

acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect

or consequential damages resulting from the use or application of this

equipment.

The examples and diagrams in this manual are included solely for illustrative

purposes. Because of the many variables and requirements associated with any

particular installation, Rockwell Automation, Inc. cannot assume responsibility

or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use

of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without

written permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual, when necessary we use notes to make you aware of

safety considerations.

Important: Identifies information that is critical for successful application and

understanding of the product.

PowerFlex is a registered trademark of Rockwell Automation, Inc.

DriveExplorer, DriveExecutive, and SCANport are trademarks of Rockwell Automation, Inc.

PLC is a registered trademark of Rockwell Automation, Inc.

WARNING: Identifies information about practices or

circumstances that can cause an explosion in a hazardous

environment, which may lead to personal injury or death, property

damage, or economic loss.

ATTENTION: Identifies information about practices or

circumstances that can lead to personal injury or death, property

damage, or economic loss. Attentions help you:

•identify a hazard

•avoid the hazard

•recognize the consequences

Shock Hazard labels may be located on or inside the equipment

(e.g., drive or motor) to alert people that dangerous voltage may be

present.

Burn Hazard labels may be located on or inside the equipment

(e.g., drive or motor) to alert people that surfaces may be at

dangerous temperatures.

Summary of Changes

The information below summarizes the changes to the Wiring and

Grounding Guidelines for Pulse Width Modulated AC Drives, publication

DRIVES-IN001, since the last release.

Manual Updates

Change Page

Revised guidelines for AC line impedance. 2-5

Revised guidelines for multi-drive protection 2-15

Revised guidelines for MOVs and common mode

capacitors

2-17

Added footnote 4. A-10

ii Summary of Changes

Notes:

Table of Contents

Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Summary of

Changes

Preface Overview

Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1

Recommended Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1

Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-2

General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-2

Chapter 1 Wire/Cable Types

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Input Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Motor Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Cable for Discrete Drive I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Analog Signal and Encoder Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Chapter 2 Power Distribution

System Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

AC Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

AC Line Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Surge Protection MOVs and Common Mode Capacitors . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Chapter 3 Grounding

Grounding Safety Grounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Noise Related Grounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Chapter 4 Practices

Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Conduit Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Wire Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Cable Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Shield Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Conductor Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Moisture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Chapter 5 Reflected Wave

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Effects On Wire Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Length Restrictions For Motor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Chapter 6 Electromagnetic Interference

What Causes Common Mode Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Containing Common Mode Noise With Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

How Electromechanical Switches Cause Transient Interference . . . . . . . . . . . . . . . . . . . 6-3

How to Prevent or Mitigate Transient Interference from Electromechanical Switches . . 6-4

Enclosure Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Appendix A Motor Cable Length Restrictions Tables

PowerFlex 4 and 40 Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

PowerFlex 400 Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Glossary

Index

Preface

Overview

The purpose of this manual is to provide you with the basic information

needed to properly wire and ground Pulse Width Modulated (PWM) AC

drives.

Who Should Use This

Manual

This manual is intended for qualified personnel who plan and design

installations of Pulse Width Modulated (PWM) AC drives.

Recommended

Documentation

The following publications provide general drive information.

Title Publication Available…

Installing, Operating and

Maintaining Engineered Drive

Systems (Reliance Electric)

D2-3115-2

Safety Guidelines for the

Application, Installation and

Maintenance of Solid State Control

SGI-1.1 www.rockwellautomation.com/

liiterature

IEEE Guide for the Installation of

Electrical Equipment to Minimize

Electrical Noise Inputs to

Controllers from External Sources

IEEE 518

Recommended Practice for

Powering and Grounding

Electronic Equipment - IEEE

Emerald Book

IEEE STD 1100

Electromagnetic Interference and

Compatibility, Volume 3

N/A RJ White - publisher

Don White Consultants, Inc., 1981

Grounding, Bonding and Shielding

for Electronic Equipment and

Facilities

Military Handbook 419

IEEE Recommended Practice for

Grounding of Industrial and

Commercial Power Systems

IEEE Std 142-1991

National Electrical Code (ANSI/

NFPA 70)

Articles 250, 725-5,

725-15, 725-52 and

800-52

Noise Reduction Techniques in

Electronic Systems

N/A Henry W. Ott

Published by Wiley-Interscience

Grounding for the Control of EMI N/A Hugh W. Denny

Published by Don White Consultants

Cable Alternatives for PWM AC

Drive Applications

IEEE Paper No.

PCIC-99-23

EMI Emissions of Modern PWM

AC Drives

N/A IEEE Industry Applications

Magazine, Nov./Dec. 1999

EMC for Product Designers N/A Tim Williams

Published by Newnes

p-2 Overview

Manual Conventions The following words are used throughout the manual to describe an action:

General Precautions

Application Guide for AC

Adjustable Speed Drive Systems

N/A NEMA

www.nema.org

IEC 60364-5-52 Selection &

Erection of Electrical Equipment -

Wiring systems

N/A IEC

www.iec.ch

Don’t Ignore the Cost of Power

Line Disturbance

1321-2.0 www.rockwellautomation.com/

liiterature

Title Publication Available…

Word Meaning

Can Possible, able to do something

Cannot Not possible, not able to do something

May Permitted, allowed

Must Unavoidable, you must do this

Shall Required and necessary

Should Recommended

Should Not Not recommended

ATTENTION: To avoid an electric shock hazard, verify that the

voltage on the bus capacitors has discharged before performing

any work on the drive. Measure the DC bus voltage at the +DC &

–DC terminals of the Power Terminal Block. The voltage must be

zero.

Chapter 1

Wire/Cable Types

AC drive installations have specific requirements for cables. Wire or cable

selection for a drive application must consider a variety of criteria.

The following section covers the major issues and proper selection of cable.

Recommendations are made to address these issues. Cable materials and

construction must consider the following:

•Environment including moisture, temperature and harsh or corrosive

chemicals.

•Mechanical needs including geometry, shielding, flexibility and crush

resistance.

•Electrical characteristics including cable capacitance/charging current,

resistance/voltage drop, current rating and insulation. Insulation may be

the most significant of these. Since drives can create voltages well in

excess of line voltage, the industry standard cables used in the past may

not represent the best choice for customers using variable speed drives.

Drive installations benefit from using cable that is significantly different

than cable used to wire contactors and push buttons.

•Safety issues including electrical code requirements, grounding needs

and others.

Choosing incorrect cable can be costly and may adversely affect the

performance of your installation.

1-2 Wire/Cable Types

General Material

Use Copper wire only. The wire clamp type terminals in Allen-Bradley

drives are made for use with copper wire only. If you use aluminum wire the

connections may loosen.

Wire gauge requirements and recommendations are based on 75 degrees C.

Do not reduce wire gauge when using higher temperature wire.

Exterior Cover

Whether shielded or unshielded, the cable must be chosen to meet all of the

application requirements. Consideration must be given to insulation value

and resistance to moisture, contaminants, corrosive agents and other

invasive elements. Consult the cable manufacturer and the chart below for

proper selection.

Figure 1.1 Wire Selection Flowchart

Selecting Wire to Withstand Reflected Wave Voltage for New and Existing Wire Installations

in Conduit or Cable Trays

Conductor

Environment

Conductor

Insulation

Thickness

XLPE

PVC

OK for < 600V AC

System

No RWR or

Terminator required

20 mil or > (1)

230V 400/460V

15 mil

RWR or

Terminator

No RWR or

Terminator

Cable

Length

# of

Drives in Same

Conduit or Wire

Tray

> 50 ft.

< 50 ft.

Single Drive,

Single Conduit

or Wire Tray

Multiple Drives

in Single Conduit

or Wire Tray

575V

No RWR

or Terminator

Reflected Wave

Reducer?

Reflected Wave

Reducer?

RWR or

Terminator

XLPE (XHHW-2)

Insulation for

<600V AC

System

No RWR or

Terminator

Required

15 mil PVC

Not

Recommended

USE XLPE

or > 20 mil

15 mil PVC

Not

Recommended

USE XLPE

or > 20 mil

See NEC Guidelines (Article 310

Adjustment Factors) for Maximum

Conductor Derating and Maximum

Wires in Conduit or Tray

(1) The mimimum wire size for PVC cable with 20 mil or greater insulation is 10 gauge.

DRY (Per

NEC Article 100)

WET (Per

NEC Article 100)

Dieses Handbuch passt für folgende Modelle

255

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