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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

2001

3AUA489002

Содержание ACH 400

Страница 1: ...User s Guide N2 Protocol ACS ACH 400 AC Drives ABB Drives ...

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Страница 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 3AUA489002 ...

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Страница 5: ...dditional 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 ...

Страница 6: ...strument 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 ca...

Страница 7: ...Safety Instructions ACS ACH 400 Direct N2 Bus Interface v More Warnings and Notes are printed throughout this manual where applicable ...

Страница 8: ...Safety Instructions vi ACS ACH 400 Direct N2 Bus Interface ...

Страница 9: ...uction 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 ...

Страница 10: ...ut 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 Commission...

Страница 11: ... and conventions used throughout the manual Chapter 2 Overview of the N2 Bus connection gives an overview of the direct N2 serial communication implementation for the ACS ACH 400 drives This chapter describes all the different services provided by the network Chapter 3 Installation describes planning for the network installation This chapter also includes the requirements and connections for the s...

Страница 12: ...ives for the N2 Bus installation The audience will also program and setup the ACS ACH 400 drives for the communication network Conventions Used In This Manual Listed below are terms and language conventions used in this manual These terms and conventions are defined here to help you understand their meanings and applications throughout this manual Analog Inputs Analog Input points are real number ...

Страница 13: ...and the subsequent returns back to normal N1LAN N1LAN is the communications backbone for Metasys It allows the functions of multiple Network Control Units and Operator Workstations to be integrated into a facility wide control and information network N2Bus The N2 Bus connects point interfaces and remote controllers within an equipment room or within occupied spaces of your facility to Network Cont...

Страница 14: ...ame of the terminal block for example X1 The number to the right of the colon represents the terminal connection for example 4 on the terminal block In this manual a terminal connection numbered 4 located on a terminal block named X1 is expressed as 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 k...

Страница 15: ...protocol is a master slave type serial communication protocol used by the Johnson Controls Metasys system In the Metasys architecture the N2 Bus connects point interfaces and remote controllers to Network Control Units NCUs Also the N2 Bus can be used to connect ACS ACH 400 drives to the Johnson Controls Companion product line This chapter is not intended to describe the protocol in detail it is i...

Страница 16: ...onnection 2 2 ACS ACH 400 Direct N2 Bus Interface Metasys Integration Figure 2 1 ABB and Metasys Integration shows the drives integration to the Johnson Controls Metasys system Figure 2 1 ABB and Metasys Integration N1LAN NCU N2 Bus ...

Страница 17: ...e of State COS monitoring alarm notification scheduling trend and totalization The ACS ACH 400 drive has a pre defined set of Analog and Binary I O points A complete list of these points is in Appendix A of this manual On one N2 Bus segment there can be up to 32 nodes while integrating ACS ACH 400 drives with Johnson Controls Metasys This is less than the 50 nodes which is the recommended maximum ...

Страница 18: ...Chapter 2 Overview of the N2 Connection 2 4 ACS ACH 400 Direct N2 Bus Interface DDL File To simplify the definition of points for the NCU unit the ACH400 DDL file is listed in Appendix B ...

Страница 19: ...the network Network planning should include the following topics Define the types and quantities of the devices which will be connected to the network Define what control information will be sent down to the drives Define what feedback information will be sent from the drives to the controlling system During the planning phase ensure that all NEC and local code restrictions are followed Controllin...

Страница 20: ...network while keeping the connections simple and affordable Wiring The N2 Bus should be wired using Belden 9842 or equivalent Belden 9842 is a dual twisted shielded pair cable with a wave impedance of 120 W One of these twisted shielded pairs is used for the RS 485 link One of the wires in the other pair is used for the logical ground leaving one wire unused For details see the diagram Figure 3 1 ...

Страница 21: ... connected to the drives On one end the shield should be connected to terminal one and on the other end to terminal five The shielding must not be made continuous by connecting the incoming and outgoing cable shields to the same terminals The proper shield connection is shown in Figure 3 1 The connections should be made only while the drive is disconnected from the power source Grounding and Termi...

Страница 22: ...ors are already resident on the ACS ACH 400 board To connect the termination resistors move jumpers on the switch box J1 on the control interface board to the terminate position Figure 3 2 RS 485 termination switches shows the position of the termination switches Figure 3 2 RS 485 termination switches The termination should not be done on the intermediate stations on the network Figure 3 3 Termina...

Страница 23: ...cal programming panel The operation of the panel is described in detail in the ACS ACH programming manual Supported Features An ACS ACH 400 drive looks for the N2 Bus protocol as a virtual object shown in Figure 4 1 ACS ACH 400 Virtual Object A virtual object is made up of Analog Inputs Binary Inputs Analog Outputs Binary Outputs Internal values for Floating point Integer and Byte values Figure 4 ...

Страница 24: ... Alarms and Warnings Change of State COS enabled Alarm Enabled Warning Enabled Override value is received but there is no action taken Binary Input The binary input points support the following features Binary Input actual value Normal Alarm state specification Alarm Enabled Change of State COS enabled Override value is received but there is no action taken Analog Output The analog output points s...

Страница 25: ... Bus communication there are new setup parameters on the drive These are located in the group 53 OEM APPLICATION These parameters are shown in Table 4 1 Group 53 OEM APPLICATION Table 4 1 Group 53 OEM APPLICATION Parameter Panel Text Range Unit Description 1 OEM Applica tion ID and Revision 5301 OEM APP PAR1 1010 1099 N2 Software ID and revision 2 Drive ID num ber 5302 OEM APP PAR2 1 255 Drive N2 ...

Страница 26: ...This parameter selects what is being done when there is a communication loss from the Metasys system down to the drive The communication loss is defined so that if there are no messages to the drive within a time period defined in the parameter 8 TIME OUT SELECT a communication loss is generated The possible selections are 0 NOT SELECTED Ignore The communication loss is ignored 1 FAULT Stop the Dr...

Страница 27: ... the power must be disconnected from the drive until the drive panel is blank 5 Good Message Counter This counter calculates the received good messages from the Metasys system If this counter is advancing the ACS ACH 400 is on line on the N2 Bus and the Metasys is communicating to the drive 6 Bad Message Counter This counter counts the communication errors on the N2 Bus If there are no errors no d...

Страница 28: ...e This will mean that to use output points to control the drive the drive must also be configured to receive commands from a Communication port Before any control commands can be given through the direct N2 connection parameter 5006 COMM COMMANDS value must be set to OEM APPLIC 3 Required setups for each individual point are listed below Analog Outputs Below is a list of all the analog output poin...

Страница 29: ...UN ENABLE for stopping the drive by coast 2 FORWARD REVERSE Set Parameter 1003 to REQUEST Also depending on the selected reference setup the following Parameter Set Parameter 1103 EXT REF1 SELECT to COMM when using Reference R1 Set Parameter 1104 EXT REF2 SELECT to COMM when using Reference R2 3 PANEL LOCK No setup is necessary 4 RUN ENABLE No setup is necessary Note that this point must always be...

Страница 30: ...amming 4 8 ACS ACH 400 Direct N2 Bus Interface 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 ...

Страница 31: ...s Code Message Description FL 1 OVERCURRENT Overcurrent Possible mechanical problem Acceleration and or deceleration times may be too short Power supply disturbances FL 2 DC OVERVOLTAGE DC overvoltage Input voltage too high Deceleration time may be too short FL 3 ACS400 or ACH400 OVERTEMP ACS ACH 400 overtemperature Ambient temperature too high Severe overload FL 4 SHORT CIRCUIT Fault current Shor...

Страница 32: ...MUM AI2 MAXIMUM AI2 parameters 1304 and 1305 MINIMUM FREQ MAXIMUM FREQ parameters 2007 and 2008 FL12 MOTOR STALL Motor stall See parameter 3009 STALL FUNCTION FL13 SERIAL COMM LOSS Serial communication loss FL14 EXTERNAL FAULT SIGNAL External fault is active See parameter 3003 EXTERNAL FAULT FL15 OUTPUT EARTH FAULT Output ground fault FL16 DC BUS RIPPLE DC bus ripple too high Check power supply fo...

Страница 33: ...al Network problems can be caused by multiple sources Some of these include Loose connections Incorrect wiring including swapped wires Bad grounding Duplicate station numbers Incorrect programming and setup for drives or other devices on the network The major diagnostic features for fault tracing on the network include Group 53 OEM APPLICATION parameters 6 GOOD MESSAGE COUNTER and 7 BAD MESSAGE CO...

Страница 34: ...cycle the drive s input power Duplicate station How to diagnose Two or more drives cannot be addressed Every time there is a read or write to one given station the BAD MESSAGE COUNTER advances How to correct Verify the station numbers of all stations Change conflicting station numbers Swapped wires How to diagnose The GOOD MESSAGE COUNTER is not advancing The BAD MESSAGE COUNTER is advancing Proto...

Страница 35: ...K to NO SAVE position When you have adjusted all needed parameters save your changes with parameter 1607 PARAM SAVE Note that while saving you may loose communication from drive for a short period Metasys Commissioning Verify that the N2 Bus has been installed as described in the N2 Communications Bus Manual from Johnson Controls Also verify that all the commissioning steps are completed according...

Страница 36: ...Chapter 5 Fault Tracing 5 4 ACS ACH 400 Direct N2 Bus Interface ...

Страница 37: ...CS 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 For each point the following information is provided The Point type The Point number Engineering units Allowable range of values ...

Страница 38: ...KILOWATT kWh 0 9999 9 MEGAWATT MWh 0 999 10 RUN TIME h 0 9999 11 DC BUS VOLT V 0 999 12 PID CTRL ACT 0 100 13 LAST FAULT fault code 14 PREV FAULT fault code 15 OLDEST FAULT fault code 16 AI 1 ACTUAL 0 100 17 AI 2 ACTUAL 0 100 18 AO 1 ACTUAL mA 0 20 Binary Inputs 1 STOP RUN 0 Stop 1 Drive Run 2 FORWARD 0 Forward 1 Reverse 3 OK FAULT 0 OK 1 Drive Faulted 4 RELAY OUTPUT 1 0 off 1 on 5 RELAY OUTPUT 2 ...

Страница 39: ...Parameters ACS ACH 400 Direct N2 Bus Interface A 3 8 DIGITAL INPUT 3 0 off 1 on 9 DIGITAL INPUT 4 0 off 1 on 10 DIGITAL INPUT 5 0 off 1 on Numb Point Units Range ...

Страница 40: ...utput Set parameter 1501 to 133 SERIAL LINK DATA 3 and set parameter 1503 to 255 Analog Outputs 1 REFERENCE 1 0 100 2 REFERENCE 2 0 100 3 CURRENT LIMIT A 0 5 In 1 66 In 4 ACCEL TIME 1 s 0 1 1800 5 DECEL TIME 1 s 0 1 1800 6 PID CONT GAIN 0 1 100 7 PID CONT I TIME s 0 1 320 8 PID CONT D TIME s 0 10 9 PID CONT D FIL s 0 10 10 COMMAND AO 1 0 100 Binary Outputs 1 STOP START 0 Stop 1 Start to 2 FORWARD ...

Страница 41: ...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 AOTITLE Analog Outputs BOTITLE Binary Outputs CSAI AI1 N N FREQ ACT Hz CSAI AI2 N N PCT ACT CSAI AI3 N N SPEED RPM CSAI AI4 N N CURRENT A CSAI AI5 N N TORQUE CSAI AI6 N N POWER kW CSAI AI7 N N DRV TEMP C CSAI AI8 N N ENERGY k kWh CSAI AI9 N N ENERGY M Mwh ...

Страница 42: ...BI8 N N DI 3 OFF ON CSBI BI9 N N DI 4 OFF ON CSBI BI10 N N DI 5 OFF ON CSAO AO1 Y Y REF 1 CSAO AO2 Y Y REF 2 CSAO AO3 Y Y CURR LIM A CSAO AO4 Y Y ACCEL 1 s CSAO AO5 Y Y DECEL 1 s CSAO AO6 Y Y PID GAIN CSAO AO7 Y Y PID ITIM s CSAO AO8 Y Y PID DTIM s CSAO AO9 Y Y PID DFIL s CSAO AO10 Y Y CMD AO 1 CSBO BO1 Y Y START STOP START CSBO BO2 Y Y REVERSE FWD REV CSBO BO3 Y Y PAN LOCK OPEN LOCKED CSBO BO4 Y ...

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Страница 44: ...0 ABB Inc Drives 16250 West Glendale Drive New Berlin WI 53151 USA Telephone 262 785 3416 800 243 4384 Fax 262 785 8525 Internet www abb drives com ABB Oy AC Drives P O Box 184 FIN 00381 Helsinki FINLAND Telephone 358 10 2211 Fax 358 10 222 2681 Internet www abb com motors drives ...

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