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ABB ACS 400 User Manual

N2 protocol
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ABB Drives
User's Guide
N2 Protocol
ACS/ACH 400 AC Drives

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  • Page 1 ABB Drives User’s Guide N2 Protocol ACS/ACH 400 AC Drives...
  • Page 3 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.

  • Page 5: Safety Instructions

    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.

  • Page 6: Notes

    Safety Instructions Notes Readers are notified of the need for special attention or additional information available on the subject with the following symbols: CAUTION! Caution aims to draw special attention to a particular issue. Note: Note gives additional information or points out more information available on the subject.
  • Page 7 Safety Instructions More Warnings and Notes are printed throughout this manual where applicable. ACS/ACH 400 Direct N2 Bus Interface...
  • Page 8 Safety Instructions ACS/ACH 400 Direct N2 Bus Interface...

  • Page 9: Table Of Contents

    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...
  • Page 10 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 ............

  • Page 11: Chapter 1 - Introduction

    Chapter 1 – Introduction This chapter describes the purpose and contents of this manual, describes the intended audience, explains conventions used in this manual, and lists related publications. How To Use This The purpose of this manual is to provide you with the information necessary to install, start- Manual up, and program an ACS/ACH 400 Adjustable...

  • Page 12: Intended Audience

    • Previous experience in installing, operating, and programming the ACS 400 or ACH 400 drives. The audience for this manual will install, start- up, and diagnose the drives for the N2 Bus installation. The audience will also program and setup the ACS/ACH 400 drives for the communication network.

  • Page 13: Binary Outputs

    Chapter 1 – Introduction Binary Outputs Binary Output points are boolean values which are outputs from the Metasys. In the ACH 400 drive, the binary outputs include the drive control for start and stop, direction, and fault reset. Change of State (COS) On the N2 Bus it is possible to define High and Low Warning and Alarm limits to analog input points, and alarm states for binary Inputs.

  • Page 14: Terminal Block

    X1:4. Related Publications For related information about the drive, refer to the ABB User’s Manual for type ACS400 Frequency Cornverter from 2,2 to 37 kW or ACH 400 AC Drives for Speed Control of 3 to 40 Hp, 230 Volt and 3 to 50 Hp, 460 Volt AC Induction Motors User’s Manual.

  • Page 15: Chapter 2 - Overview Of The N2 Connection

    Chapter 2 – Overview of the N2 Connection This chapter describes the general features of the N2 Bus. For more detailed information on the use of the N2 Bus, please consult the appropriate Johnson Controls documentation. Introduction The N2 Bus protocol is a master - slave type serial communication protocol, used by the Johnson Controls Metasys system.

  • Page 16: Metasys Integration

    Chapter 2 – Overview of the N2 Connection Metasys Integration Figure 2-1 “ABB and Metasys Integration” shows the drives’ integration to the Johnson Controls Metasys system. N1LAN N2 Bus Figure 2-1 ABB and Metasys Integration ACS/ACH 400 Direct N2 Bus Interface...

  • Page 17: Device Type

    Johnson Controls Metasys Companion system. Panel Version/LTD PC-Version Converter N2 Bus Figure 2-2 ABB and Metasys Companion Integration On the N2 Bus each ACS/ACH 400 drive can be accessed by the full complement of Metasys FMS features, including Change-of-State (COS) monitoring, alarm notification, scheduling, trend, and totalization.

  • Page 18: Ddl File

    Chapter 2 – Overview of the N2 Connection DDL File To simplify the definition of points for the NCU ACH400.DDL unit, the file is listed in Appendix B. ACS/ACH 400 Direct N2 Bus Interface...

  • Page 19: Chapter 3 - Installation

    Chapter 3 – Installation This chapter describes the installation of the N2 network for the ACS/ACH 400 Drives using the RS-485 connection. It describes the planning of the network installation, required hardware wiring, and programming considerations for the drive. Introduction The N2 Bus connection to the ACS/ACH 400 drives is based on an industry standard RS-485 physical interface.

  • Page 20: Feedback From The Drive

    Chapter 3 – Installation Feedback from the The Metasys can read any Analog and Digital drive Input point back from the drive. Each one of the Input points on the drive has a predefined meaning, which is described in Chapter 4 – Programming in this manual.

  • Page 21: Grounding And Termination

    Chapter 3 – Installation Figure:3-1Communication wiring for ACS/ACH 400 Drives 1 SRC 2 B=N2+ 3 A=N2- 4 AGND 5 SRC The RS-485 connection is made using one of the twisted pairs in the cable. The B terminals are all connected together, and the A terminals are all connected together.
  • Page 22 Chapter 3 – Installation As always, the grounding wires should not make any closed loops, and all the devices should be grounded into common ground. The N2 Bus must be terminated using 120 W resistors at both ends of the network. These resistors are already resident on the ACS/ACH 400 board.

  • Page 23: Chapter 4 - Programming

    Chapter 4 – Programming This chapter describes the programming of the ACS/ACH 400 drives for communications on the N2 Bus. The reader should be familiar with the ACS/ACH 400 drive and the Johnson Controls Metasys system. Programming of The ACS/ACH 400 drives are programmed through the local programming panel.

  • Page 24: Analog Input

    Chapter 4 – Programming The ACS/ACH 400 drive does not have any internal values for the N2 Bus communication. A complete list of the Analog and Binary I/O points is shown in the Appendix A. Analog Input The analog input points support the following features: •...

  • Page 25: Binary Output

    Chapter 4 – Programming Binary Output The binary output points support the following features: • Binary Output value • Override value is used to change the Binary Output value. It is not possible to return to the previous value by removing the override.
  • Page 26 Chapter 4 – Programming Range/ Parameter Panel Text Description Unit 7 Framing Error 5307 OEM 0 – Number of detected Counter APP PAR7 65535 framing errors 8 Overrun 5308 OEM 0 – Number of detected Counter APP PAR8 65535 overrun errors 9 Protocol Soft- 5309 OEM 0 –...
  • Page 27 Chapter 4 – Programming 2 = CONSTANT SPEED 7 Drive keeps on running The drive will show the fault on the panel and will continue running at the constant speed set by parameter 1208 CONST SPEED 7. The drive will also go to the Off-Line state on the N2 Bus.

  • Page 28: Output Point Configuration

    Chapter 4 – Programming 9 Protocol Software Error This parameter shows the protocol software error code. The possible codes are: 0 = NO FAULT 1 = NO ADDRESS N2 node address of the drive has to be set and the drive has to be powered down and back up for the setting to take effect.

  • Page 29: Binary Outputs

    Chapter 4 – Programming 8 PID-CONT D-TIME No setup is necessary. 9 PID-CONT D-FILTER No setup is necessary. 10 COMMAND AO 1 Set the parameter 1501 AO CONTENT to 133 (SERIAL LINK DATA 3) and set the parameter 1503 AO CONTENT MAX to 255. Binary Outputs Below is a list of all the analog output points for the N2 Bus interface for the ACS/ACH 400...
  • Page 30 Chapter 4 – Programming 8 COMMAND RO 2 Set Parameter 1402 RELAY OUTPUT 2 to 9 “SUPERV2 OVER”, set Parameter 3204 SUPERV 2PARAM to 132 “SERIAL LINK DATA 2” and set Parameter 3206 SUPERV 2 LIM HI to 1. ACS/ACH 400 Direct N2 Bus Interface...

  • Page 31: Fault Queue

    Chapter 4 – Programming Fault Queue The ACS/ACH 400 has a fault queue which records the latest three faults. This queue can be read using the Analog Input points 13 - 15. Faults Faults are abnormal situations detected by the drive, which cause the drive to fault.
  • Page 32 Chapter 4 – Programming FL10 PANEL LOSS Panel loss. Panel is disconnected when Start/Stop/Dir or reference is coming from panel. See parameter 3002 and APPENDIX. Note! If FL10 is active when the power is turned off, the ACS/ACH 400 will start in remote control (REM) when the power is turned back on.

  • Page 33: Chapter 5 - Fault Tracing

    Chapter 5 – Fault Tracing This chapter describes troubleshooting procedures for the N2 Bus installation using diagnostics counters, fault queues, and drive status displays. Possible fault origins are also addressed. Fault Diagnostics This chapter concentrates on the problems and possible remedies for the serial communication connection for the ACS/ACH 400 N2 Bus.

  • Page 34: No Metasys Station On Line

    Chapter 5 – Fault Tracing If problems exist, the BAD MESSAGE COUNTER will advance whenever a bad message packet is received, and the GOOD MESSAGE COUNTER will advance for each good message packet received. No Metasys station on How to diagnose: Neither the GOOD line MESSAGE COUNTER nor the BAD MESSAGE COUNTER increases on any of the...

  • Page 35: Intermittent Off-Line Occurrences

    Chapter 5 – Fault Tracing It is also possible that the time-out selection for the drive is too short for the given installation. The Metasys is not polling the drive within the time-out delay time given in the parameter 5303 TIME-OUT TIME.
  • Page 36 Chapter 5 – Fault Tracing ACS/ACH 400 Direct N2 Bus Interface...

  • Page 37: Appendix A - I/O Point List

    Appendix A – I/O Point List This chapter lists all the I/O points defined for the ACS/ACH 400 drive. This chapter is intended for reference purposes. All the numbers read and written to the drive are in engineering units. Parameters The following table lists all of the I/O points.

  • Page 38: Parameters

    Parameters Table A-1 I/O point list Numb Point Units Range Analog Inputs: OUTPUT FRE- 0 - 250 RATED SPEED 0 – 100 SPEED 0 – 9999 CURRENT 0 – 9999 RATED TORQUE -300 – 300 RATED POWER 0 -9999 ° DRIVE TEMPERA- 0 –...
  • Page 39 Parameters Numb Point Units Range DIGITAL INPUT 3 0 = off, 1 = on DIGITAL INPUT 4 0 = off, 1 = on DIGITAL INPUT 5 0 = off, 1 = on ACS/ACH 400 Direct N2 Bus Interface...
  • Page 40 Parameters Numb Point Units Range Analog Outputs: REFERENCE 1 0 - 100 REFERENCE 2 0 – 100 CURRENT LIMIT 0.5*In - 1.66*In ACCEL TIME 1 0.1 – 1800 DECEL TIME 1 0.1 – 1800 PID-CONT GAIN 0.1 – 100 PID-CONT I-TIME 0.1 –...

  • Page 41: Appendix B - Ddl File For Ncu

    I/O points of the ACS/ACH 400 drive to the Network Controller Units. ACH_400.DDL Below is the listing of the ACH_400.DDL file. ********************************************** ABB Drives, ACH 400 Variable Frequency Drive ********************************************** CSMODEL "ACH_400","VND" AITITLE "Analog Inputs" BITITLE "Binary Inputs"...
  • Page 42 Appendix B – DDL File for NCU CSAI "AI15",N,N,"1ST FLT","Code" CSAI "AI16",N,N,"AI 1","%" CSAI "AI17",N,N,"AI 2","%" CSAI "AI18",N,N,"AO 1","mA" CSBI "BI1",N,N,"STATUS","STOP","RUN" CSBI "BI2",N,N,"DIRECT.","FWD","REV" CSBI "BI3",N,N,"FAULT","OK","FLT" CSBI "BI4",N,N,"RO 1","OFF","ON" CSBI "BI5",N,N,"RO 2","OFF","ON" CSBI "BI6",N,N,"DI 1","OFF","ON" CSBI "BI7",N,N,"DI 2","OFF","ON" CSBI "BI8",N,N,"DI 3","OFF","ON" CSBI "BI9",N,N,"DI 4","OFF","ON"...
  • Page 44 ABB Inc. ABB Oy Drives AC Drives 16250 West Glendale Drive P.O.Box 184 New Berlin, WI 53151 FIN-00381 Helsinki FINLAND Telephone: 262 785-3416 Telephone: +358 10 2211 800 243-4384 Fax: +358 10 222 2681 Fax: 262 785-8525 Internet: www.abb.com/motors&drives Internet:...

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