ABB ACS 400 User manual

User’s Guide
N2 Protocol
ACS/ACH 400 AC Drives
A
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
Copyright © 2001 ABB Inc. All Rights Reserved.
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