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Emerson PACSystems PAC8000 Instruction Manual
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Emerson PACSystems PAC8000 Instruction Manual

Emerson PACSystems PAC8000 Instruction Manual

I/o - 2/x i/o modules (2/1 application)
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Instruction Manual
INM-8200A
Mar 2020
TM
PACSystems
PAC8000
I/O - 2/X I/O MODULES (2/1 APPLICATION)
INSTRUCTION MANUAL

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Summary of Contents for Emerson PACSystems PAC8000

  • Page 1 Instruction Manual INM-8200A Mar 2020 PACSystems PAC8000 I/O - 2/X I/O MODULES (2/1 APPLICATION) INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    Instruction Manual Contents INM8200A Mar 2020 Contents Chapter 1: Introduction ..............5 Process I/O ........................5 1.1.1 General-purpose Applications ................5 1.1.2 Hazardous Area Applications................6 Application Code ......................1 Chapter 2: PAC8000 I/O Components ..........3 Bus Interface Modules and Controllers ................3 2.1.1 Bus Interface Modules..................
  • Page 3 Instruction Manual Contents INM-8200A Mar 2020 4.3.4 Earth leakage connections ................21 Field Terminals ......................21 4.4.1 Types ......................... 21 4.4.2 Compatibility of Field Terminal and I/O Module ..........21 4.4.3 Field Terminals - Installation and removal ............22 4.4.4 Tagging Strip ...................... 24 4.4.5 Field Circuit Wiring ....................
  • Page 4 Instruction Manual Contents INM-8200A Mar 2020 Appendix D: Glossary of Terms ............41 Bussed Field Power - BFP ....................41 Intrinsic Safety - IS ......................41 n+1 redundancy ......................41 Railbus .......................... 41 Railbus Isolator ......................41 Use of equipment in hazardous areas ......Error! Bookmark not defined. Appendix E: ATEX Information ............
  • Page 5 The information is supplied for informational purposes only, and Emerson makes no warranty as to the accuracy of the information included herein. Changes, modifications, and/or improvements to equipment and specifications are made periodically and these changes may or may not be reflected herein.
  • Page 6 Instruction Manual Appendix E INM-8200A Mar 2020 Chapter 1: Introduction PAC8000 I/O is a modular I/O system for the process industry that provides the important interface between the remote field sensors and actuators and the central host or controller. Designed to be in the field, close to the field devices, 8000 I/O allows the full benefit of distributed I/O to be realized.
  • Page 7 Emerson is a world leader in technology for the prevention of explosive hazards and that experience is of major value to users requiring process control equipment for such applications.

  • Page 8: Application Code

    Instruction Manual Chapter 1 INM-8200A Mar 2020 Application Code An application “code” has been adopted that helps users to identify the type of 8000 I/O Series equipment for their application. Figure 1-2: PAC8000 I/O Application Options As well as general purpose, three equipment applications are defined – “2/2”, “2/1” and “1/1”. Figure 1-3: Equipment Application Codes The two numbers and their usage have the following meaning: •...
  • Page 9 Instruction Manual Chapter 1 INM-8200A Mar 2020 This document applies to general-purpose and 2/1 applications ONLY; specifically, the types shown in d) and e) above. Note: Any component with direct connection into Div 1 or Zone 1/0 hazardous area must employ 2/1 products.

  • Page 10: Chapter 2: Pac8000 I/O Components

    A Bus Interface Module (BIM) is used to communicate with a host controller, such as a PLC. Figure 2-1: 8505-BI-MB, Modbus Bus Interface Module Different BIMs allow PAC8000 I/O to operate with popular fieldbus protocols and Emerson has approximate configuration software for each system.

  • Page 11: Controllers

    Instruction Manual Chapter 2 INM-8200A Mar 2020 Table 1: Available Carrier Types Carrier Model Numbers BIM only 8715-CA-BI BIM + Node Services Module (NSM) 8717-CA-NS BIM + DC/DC power supplies + 4 I/O modules 8711-CA-NS, 8712-CA-NS, 8718-CA-NS Figure 2-2: 8715-CA-BI BIM Carrier Details for installing BIMs and their carriers are provided in the manuals for the respective BIMs.

  • Page 12: Chapter 1: Introduction

    Instruction Manual Chapter 2 INM-8200A Mar 2020 Figure 2-3: Controller type 8521 The controller uses one type of carrier, which will accommodate two controllers in order to provide redundancy. Carrier type Model numbers Dual controller + Power Supply Monitor 8750-CA-NS Figure 2-4 8750-CA-NS Carrier PAC8000 I/O Components...

  • Page 13: Hazardous Area Applications

    This carrier can also accommodate a Power Supply Monitor module (8410-NS-PS), which monitors the “health” signals available from power supplies, such as the 8913 and 8914 models available from Emerson. Details on installing this carrier are provided in the controller manual. See the section “Related documents”...

  • Page 14: Carrier Extenders

    Instruction Manual Chapter 2 INM-8200A Mar 2020 Carriers provide a mounting for the 8000 I/O modules. They support the I/O modules, the field terminals, and carry the address, data and power lines of the internal bus (‘Railbus’). Most carriers can be fitted to standard T-section or G-section DIN rail or may be surface mounted on a flat panel.

  • Page 15: Railbus Isolator

    Instruction Manual Chapter 2 INM-8200A Mar 2020 2.2.2 Railbus Isolator The 8922-RB-IS Railbus Isolator provides protective isolation between the IS and non-IS sections of the internal bus (‘Railbus’), i.e. between the carrier carrying the BIM, or the Controller, and the 2/1/ I/O modules. The carrier reverses the gender arrangement of the carrier end connectors, permitting only carriers for 2/1 I/O modules can be added subsequently in the chain of modules.

  • Page 16: Field Terminal Assemblies

    Instruction Manual Chapter 2 INM-8200A Mar 2020 Figure 2-9: 8724-CA-PS 2/1 Power Supply Carrier 2.2.4 Field terminal assemblies Field terminal assemblies (one per I/O module) snap onto the carrier. These accept field wiring without the need for additional terminals or connections and may be changed easily if damaged in the field.

  • Page 17: Enclosures

    Enclosures for this purpose can be supplied on request by Emerson, but any enclosure that is designed to provide an adequate level of ingress protection and is capable of withstanding physical damage appropriate to the environment will be satisfactory.

  • Page 18: Tools Required

    Instruction Manual Chapter 2 INM-8200A Mar 2020 6. Trim field wiring cable-ends and connect into the field terminals (this could also be done after the modules are fitted). Cable-ends should be tagged to identify the associated instrument/actuator. 7. Trim cable ends of power supplies and connect to the relevant terminals. 8.

  • Page 19: Chapter 3: The 2/1 System Types

    Instruction Manual Chapter 3 INM-8200A Mar 2020 Chapter 3: The 2/1 System Types Before assembling the system the user must be aware of the type of system that is being installed. The assembly process is a little different for each of the following types of installation. a) 2/1 system with intrinsically safe field wiring b) Combined 2/2 and 2/1 systems There follows a brief description of the key elements required to implement these types.

  • Page 20: Combined 2/2 And 2/1 Systems

    Instruction Manual Chapter 3 INM-8200A Mar 2020 Where required, carrier extenders are used to continue the module carriers on a separate DIN rail. Specific 2/1 carrier extenders and multicore cables must be used for this purpose – 2/2 versions are not compatible. Power for the 2/1 I/O modules is provided normally by the 8920-PS-DC power supply units.
  • Page 21 Instruction Manual Chapter 3 INM-8200A Mar 2020 If carrier extenders are required (see above), the appropriate extenders (2/2 or 2/1) must be used to suit the carriers involved. There is no possibility of using the wrong ones as the system is designed to prevent this.

  • Page 22: Chapter 4: The Installation Process

    Instruction Manual Chapter 4 INM-8200A Mar 2020 Chapter 4: The Installation Process The carriers can be installed directly to a flat panel or to T- or G-section DIN rail. Figure 4-1: Recommended minimum clearance between carrier and cable trunking Fitting Cable Trunking Cable trunking is recommended for management of the power supply and field wiring.

  • Page 23: Flat Panel Mounting

    Instruction Manual Chapter 4 INM-8200A Mar 2020 After the Railbus Isolator carrier (shown dotted in Figure 4-2), the carriers (8924) for the IS module power supplies can be located anywhere in the 2/1 section to satisfy power requirements. They should be distributed throughout the chain of module carriers, not grouped together, as the illustration above shows.

  • Page 24: Din Rail Mounting

    Instruction Manual Chapter 4 INM-8200A Mar 2020 4.2.2 DIN rail mounting Carriers may be mounted on T-section or G-section DIN rail. Distance between rail fixings The following table gives fixing dimensions for a fully loaded rail. Rail Type Distance between fixings (max.) G –...
  • Page 25 Instruction Manual Chapter 4 INM-8200A Mar 2020 Figure 4-6: DIN rail fixing positions Important BEFORE MOUNTING A CARRIER ON THE DIN-RAIL Give each of the required screws two 360° turns, anti-clockwise, with a screwdriver. (This ensures the nuts on the underside of the carrier have swung out of the way and are sufficiently retracted.) NOTICE Maximum torque for swing-nut fixing screws is 10 Nm (7.5 ft-lb)

  • Page 26: 2/1 Carrier Extenders

    Instruction Manual Chapter 4 INM-8200A Mar 2020 2/1 Carrier Extenders Carrier extenders maintain the internal signal and power bus connections between the carriers when space does not allow the current line of carriers to be continued. Figure 4-7: Carrier extender 4.3.1 Right-hand and Left-hand versions Different carrier extenders must be used for 2/2 and 2/1 sections to accommodate the different...

  • Page 27: Fitting Carrier Extender Railbus Cables

    Instruction Manual Chapter 4 INM-8200A Mar 2020 0.35 m 8032-CC-35 8011-CC-35 + 8016-CC-35 0.85 m 8033-CC-85 8012-CC-85 + 8017-CC-85 1.2 m 8034-CC-12 8013-CC-12 + 8018-CC-12 CAUTION Ensure that no undue strain is placed on extender cables/wiring when installed and the extender cables/wiring are secured with suitable cable clips or routed through adjacent trunking.

  • Page 28: Fitting Carrier Extender D.c. Power Cables

    Instruction Manual Chapter 4 INM-8200A Mar 2020 4.3.3 Fitting carrier extender D.C. power cables The 2/1 Railbus 12V supply extension is carried on a prepared cable that has 6-way connectors (see previous page). • Select one of the standard cable lengths to interconnect the two extenders. •...

  • Page 29: Rotary Keys

    Instruction Manual Chapter 4 INM-8200A Mar 2020 The following two mechanical methods are employed to prevent a module being fitted to a field terminal assembly that is unsuitable for it. Rotary keys This method protects modules and field circuits from the application of voltages and currents incompatible with their function and uses a pair of ‘D-shaped’, rotatable keys (see Figure 4-9).
  • Page 30 Instruction Manual Chapter 4 INM-8200A Mar 2020 The Field Terminals must be fitted onto the carrier before the modules are installed. It is recommended that the position of each module is defined before fitting the field terminals. The key code of each field terminal can then be set prior to fitting. To fit a field terminal to the carrier •...

  • Page 31: Tagging Strip

    Instruction Manual Chapter 4 INM-8200A Mar 2020 4.4.4 Tagging Strip A tagging strip is supplied with the field terminal assembly to assist with the identification of the field circuit connections. The strip has a ‘dovetail’ fitting tab to attach it to the field assembly, and once fitted it may be raised to obtain access to any field wiring fuses, or lowered and latched, to display the wiring identities.

  • Page 32: Cable Termination

    Instruction Manual Chapter 4 INM-8200A Mar 2020 4.4.6 Cable Termination Field wiring is usually organised in pairs and a pair of cable ends will be wired into the Terminal Block one above the other. If I/O connections do not conform to this refer to the module datasheet.

  • Page 33: Vacant I/O Module Slots

    Instruction Manual Chapter 4 INM-8200A Mar 2020 • Push the module onto the connectors until it is fully seated • Lock in place with the retaining screw. Do not overtighten otherwise damage could occur. The maximum torque is shown here (left). Figure 4-14: Fitting an I/O module NEVER attempt to force a module into place on the carrier or field terminal.

  • Page 34: Chapter 5: Wiring And Cabling Guidelines

    Instruction Manual Chapter 5 INM-8200A Mar 2020 Chapter 5: Wiring and cabling guidelines Installation and cable routing guidelines 5.1.1 Inside a building To avoid interaction of signals and the influence of power spikes when laying cables and wiring inside a building, EMC rules for minimum clearances between adjacent cabling should be observed.

  • Page 35: Cross Reference Table

    Instruction Manual Chapter 5 INM-8200A Mar 2020 5.1.4 Cross reference table See key below. 5.1.5 Cable laying method in common bundles or ducts In separate bundles or ducts (no minimum clearance specified) Inside a cabinet - in separate bundles or ducts (no minimum clearance specified) Outside a cabinet - (on separate tracks with a clearance of at least 10 cm) 5.1.6 Outside a building...

  • Page 36: Cable Types And Their Termination

    Instruction Manual Chapter 5 INM-8200A Mar 2020 Cable types and their termination The following table gives guidelines on cables and terminations for field wiring, bussed field power and system power. Cable Types and Field Cables Bussed Field Power System Power Preparation Solid Not recommended...

  • Page 37: Chapter 6: Earthing / Grounding Practice

    Instruction Manual Chapter 6 INM-8200A Mar 2020 Chapter 6: Earthing / grounding practice A few precautions in earthing/grounding are necessary when installing the 8000 I/O equipment. Consult the diagram on the following page for further details. Earthing / Grounding in field enclosure A field enclosure normally has a metal backplane to which the contents are attached and which has a good, low impedance connection to ground.
  • Page 38 Instruction Manual Chapter 7 INM-8200A Mar 2020 Mounting Dimensions...
  • Page 39 Instruction Manual Chapter 7 INM-8200A Mar 2020 Mounting Dimensions...
  • Page 40 Instruction Manual Chapter 7 INM-8200A Mar 2020 Mounting Dimensions...

  • Page 41: Chapter 7: Maintenance

    Instruction Manual Chapter 7 INM-8200A Mar 2020 Chapter 7: MAINTENANCE Fuses The only user-replaceable fuses in 8000 I/O Series products are those used in the fused Field Terminals. These fuses are marked with their rating and only replacements of the same rating may be used.

  • Page 42: Appendix A: Mounting Dimensions

    Instruction Manual Appendix A INM-8200A Mar 2020 Appendix A: Mounting Dimensions Mounting Dimensions...
  • Page 43 Instruction Manual Appendix A INM-8200A Mar 2020 Mounting Dimensions The width (W) of the carrier depends upon the type chosen. Part No. Carrier type L (mm) 8727-CA-08 8-way IS I/O module carriers 336.0+0.2 8720-CA-04 4-way IS I/O module carriers 168.0+0.2 8723-CA-RB Railbus Isolator 86.0+0.2...

  • Page 44: Appendix B: Trunking Options

    Instruction Manual Appendix B INM-8200A Mar 2020 Appendix B: Trunking Options Appendix B 1: All I/O Modules in Same Direction Notes: • 2/1 (IS) carrier extender cables may be run in either IS or non-IS trunking (as shown). • 2/2 Carrier extender cables should not be routed in IS trunking. •...

  • Page 45: Appendix C: Field Terminal Connections

    Instruction Manual Appendix C INM-8200A Mar 2020 Appendix C: Field Terminal Connections Identify the terminal type in the table, then refer to the appropriate diagram for connection details. Terminal type Diagram No. 8621-FT-IS a or c* 8622-FT-IS a or c* 8623-FT-IS 8624-FT-IS 8625-FT-IS...
  • Page 46 Instruction Manual Appendix C INM-8200A Mar 2020 Diagram c Diagram d Diagram e Field Terminal Connections...
  • Page 47 Instruction Manual Appendix C INM-8200A Mar 2020 Diagram f Diagram g Field Terminal Connections...

  • Page 48: Appendix D: Glossary Of Terms

    Instruction Manual Appendix E INM-8200A Mar 2020 Appendix D: Glossary of Terms Some of the terms used in this manual may be unfamiliar to the reader. The following glossary is intended as a very brief introduction to some of them. Bussed Field Power - BFP Some field circuits, located in safe areas, Division 2 or Zone 2 hazardous areas, require electrical power for them to operated correctly.

  • Page 49: Appendix E: Atex Information

    Instruction Manual Appendix E INM-8200A Mar 2020 Appendix E: ATEX Information The Essential Health and Safety Requirements (Annex II) of the EU Directive 94/9/EC [the ATEX Directive - safety of apparatus] requires that the installation manual of all equipment used in hazardous areas shall contain certain information.

  • Page 50: Inspection And Maintenance

    Instruction Manual Appendix E INM-8200A Mar 2020 Inspection and maintenance a) Inspection and maintenance should be carried out in accordance with European, national and local regulations which may refer to the IEC standard IEC 60079-17. In addition, specific industries or end users may have specific requirements which should also be met. b) Access to the internal circuitry must not be made during operation.
  • Page 51 Instruction Manual Appendix E INM-8200A Mar 2020 8-channel AO, 4-20mA with HART® BAS01ATEX7185U Special conditions of use: 1. Each group of circuits, forming an output channel, must be considered as a separate intrinsically safe circuit which must be segregated from all other circuits by the requirements of Table 4 of EN 50020:1994.
  • Page 52 Instruction Manual Appendix E INM-8200A Mar 2020 8205-TI-IS 8-channel THC/mV input BAS98ATEX7316U Special conditions of use: 1 Each group of circuits, forming an output channel, must be considered as a separate intrinsically safe circuit which must be segregated from all other circuits by the requirements of Table 4 of EN 50020:1994.
  • Page 53 Instruction Manual Appendix E INM-8200A Mar 2020 2 Plugs and sockets for external connection must be designed such that incorrect connections or interchangeability with inappropriate field connections is prevented. 3 This module must be segregated from any other Non-IS or IS circuits, by the Requirements of Table 4 of EN 50020:1994.
  • Page 54 Instruction Manual Appendix E INM-8200A Mar 2020 Special conditions of use: 1. Each group of circuits, forming an output channel, must be considered as a separate intrinsically safe circuit which must be segregated from all other circuits by the requirements of Table 4 of EN 50020:1994.

  • Page 55: Field Terminals

    Instruction Manual Appendix E INM-8200A Mar 2020 II (1) G [EEx ia] IIC Um = 18 V, Uo = 15.75 V, Io = 20 mA, Po = 0.315W, Ci = 0, Li = 0 –40 to +70°C Special conditions of use: 1.

  • Page 56: Railbus Isolator

    Instruction Manual Appendix E INM-8200A Mar 2020 1. The maximum input/output voltage for the terminals must not exceed 30V. 2. When the 8625-FT-IS Thermocouple Field Terminals and the 8626-FT-IS RTD Field Terminals are used, the effect of segregation limitations for 30V within the terminals, should be considered on the combined output parameters for the assembly.

  • Page 57: Carriers

    Instruction Manual Appendix E INM-8200A Mar 2020 Schedule of Limitations: 1. The 8920-PS-DC, IS System Power Supply Module output voltage requires further voltage and current limitation before it can be connected within an Intrinsically Safe Circuit. 2. The 8920-PS-DC, IS System Power Supply Module and the 8724-CA-PS IS Module Power Supply Carrier must be mounted with suitable connection facilities such that the external connections are provided with a degree of protection of at least IP20.

  • Page 58: Carrier Extenders

    Instruction Manual Appendix E INM-8200A Mar 2020 Schedule of Limitations: 1. The 8922-RB-IS Railbus Isolator output voltage requires further voltage and current limitation before it can be connected within an Intrinsically Safe Circuit. 2. This module must be segregated from any other Non-IS circuits, by the requirements of Table 4 of EN50020: 1994.

  • Page 59: Extender Cables

    Instruction Manual Appendix E INM-8200A Mar 2020 1. The 87XX Module Carriers must be installed with either a complete set of I/O modules or 8420-BK-MO Module Blanking Covers such that the carrier has a degree of protection of at least IP20.

  • Page 60: Appendix F: Related Documents

    The following documents are related to the instructions provided in this manual and are available upon request, downloaded from website: https://www.emerson.com/Industrial-Automation-Controls/support. Process Connections Catalogue Instruction Manuals INM8455 BIM Configuration Software INM8502 Profibus-DP BIM INM8505 Modbus BIM INM8521 Controller – System manual...
  • Page 61 Note: If the product is purchased through an Authorized Channel Partner, please contact the seller directly for any support. Emerson reserves the right to modify or improve the designs or specifications of the products mentioned in this manual at any time without notice. Emerson does not assume responsibility for the selection, use or maintenance of any product.