ABB ACS 400 User manual

User’s Guide

N2 Protocol

ACS/ACH 400 AC Drives

BB Drives

Direct N2 Bus Interface

For ACS/ACH 400 AC Drives

User’s Guide

ACH400-N2-US-04

3AUA489002B5856 R0101 Rev B

Effective: 11/1/01

Supersedes: 6/30/00

3AUA489002

ACS/ACH 400 Direct N2 Bus Interface iii

Safety Instructions

Overview This chapter states the safety instructions that

must be followed when installing into a network

and operating the direct N2 Bus interface.

The material in this chapter must be studied

before attempting any work on, or with, the unit.

Warnings and Notes This manual incorporates two types of safety

instructions. Warnings are used to inform of

conditions which can, if proper steps are not

taken, lead to a serious fault condition, physical

injury and death. Notes are used when the

reader is required to pay special attention or

when there is additional information available

on the subject. Notes are less crucial than

Warnings, but should not be disregarded.

Warnings Readers are informed of situations that can

result in serious physical injury and/or serious

damage to equipment with the following

symbols:

Dangerous Voltage Warning: warns of

situations in which a high voltage can cause

physical injury and/or damage equipment. The

text next to this symbol describes ways to

avoid the danger.

General Warning: warns of situations which

can cause physical injury and/or damage

equipment by means other than electrical. The

text next to this symbol describes ways to

avoid the danger.

Electrostatic Discharge Warning: warns of

situations in which an electrostatic discharge

can damage equipment. The text next to this

symbol describes ways to avoid the danger.

Safety Instructions

iv ACS/ACH 400 Direct N2 Bus Interface

Notes Readers are notified of the need for special

attention or additional information available on

the subject with the following symbols:

General Safety

Instructions WARNING! All electrical installation and

maintenance work on the drive should be

carried out by qualified electricians.

The drive and adjoining equipment must be

properly grounded.

Do not attempt any work on a powered drive.

After switching off the main power, always

allow the intermediate circuit capacitors 5

minutes to discharge before working on the

frequency converter, the motor or the motor

cable. It is good practice to check (with a

voltage indicating instrument) that the drive is

discharged before beginning work.

The motor cable terminals of the drive are at a

dangerously high voltage when main power is

applied, regardless of motor operation.

There can be dangerous voltages inside the

drive from external control circuits even when

the drive’s main power is shut off. Exercise

appropriate care when working with the unit.

Neglecting these instructions can cause

physical injury and death.

WARNING! There are several automatic

reset functions in the drive. If selected, they

reset the unit and resume operation after a

fault. These functions should not be selected

if other equipment is not compatible with this

kind of operation, or if such action can create

a dangerous situation.

CAUTION! Caution aims to draw special attention to a

particular issue.

Note: Note gives additional information orpoints out

more information available on the subject.

Safety Instructions

ACS/ACH 400 Direct N2 Bus Interface v

More Warnings and Notes are printed

throughout this manual where applicable.

Safety Instructions

vi ACS/ACH 400 Direct N2 Bus Interface

ACS/ACH 400 Direct N2 Bus Interface vii

Table of Contents

Safety Instructions

Overview.............................................................................iii

Warnings and Notes ...........................................................iii

Warnings........................................................................iii

Notes............................................................................. iv

General Safety Instructions................................................ iv

Chapter 1 – Introduction

How To Use This Manual.................................................1-1

Intended Audience...........................................................1-2

Conventions Used In This Manual...................................1-2

Analog Inputs ..............................................................1-2

Analog Outputs............................................................1-2

Binary Inputs ...............................................................1-2

Binary Outputs.............................................................1-3

Change of State (COS)...............................................1-3

N1LAN.........................................................................1-3

N2Bus..........................................................................1-3

On-Line / Off-Line........................................................1-3

Terminal Block.............................................................1-4

Related Publications........................................................1-4

Chapter 2 – Overview of the N2 Connection

Introduction......................................................................2-1

Metasys Integration..........................................................2-2

Device Type.....................................................................2-3

DDL File......................................................................2-4

viii ACS/ACH 400 Direct N2 Bus Interface

Chapter 3 – Installation

Introduction......................................................................3-1

Controlling the drive....................................................3-1

Feedback from the drive.............................................3-2

Hardware Installation.......................................................3-2

Wiring..........................................................................3-2

Connections................................................................3-2

Grounding and Termination........................................3-3

Chapter 4 – Programming

Programming of the Drive................................................4-1

Supported Features.........................................................4-1

Analog Input................................................................4-2

Binary Input.................................................................4-2

Analog Output.............................................................4-2

Binary Output..............................................................4-3

Communication Setup.....................................................4-3

Output Point Configuration ..............................................4-6

Analog Outputs...........................................................4-6

Binary Outputs............................................................4-7

Fault Queue.....................................................................4-8

Faults..........................................................................4-8

Chapter 5 – Fault Tracing

Fault Diagnostics.............................................................5-1

Normal operation ........................................................5-1

No Metasys station on line..........................................5-2

Duplicate station .........................................................5-2

Swapped wires............................................................5-2

Oem Application Fault.................................................5-2

Intermittent off-line occurrences..................................5-3

Metasys Commissioning.............................................5-3

Summary .........................................................................5-3

Appendix A – I/O Point List

Parameters......................................................................A-1

Appendix B – DDL File for NCU

ACH_400.DDL.................................................................B-1

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