Rockwell Automation 1794-ASBE User Manual

A " !

A

9 "A E

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Important User Information

Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen±Bradley publication SGI±1.1, Safety Guidelines for Application, Installation, and Maintenance of Solid±State Control (available from your local Rockwell Automation office), describes some important differences between solid±state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard. avoid a potential hazard, and recognize the consequences of a potential hazard.

Identifies information about practices or WARNING circumstances that can cause an explosion in a

hazardous environment, which may lead to personal

!injury or death, property damage, or economic loss.

Identifies information about practices or ATTENTION circumstances that may lead to personal injury or

death, property damage, or economic loss.

!

Identifies information that is critical for IMPORTANT successfulproduct. application and understanding of the

ATTENTION

!

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664±1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as ªopen typeº equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present, and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosures. Also, see the appropriate sections in this publication, as well as the Allen±Bradley publication 1770±4.1, (ªIndustrial Automation Wiring and Grounding Guidelinesº), for additional installation requirements pertaining to this equipment.

ATTENTION

!

FLEX I/O is grounded through the DIN rail to chassis ground. Use zinc plated, yellow chromated steel DIN rail to assure proper grounding. Using other DIN rail material (e.g. aluminum, plastic, etc.) which can corrode, oxidize or are poor conductors can result in improper or intermittent platform grounding.

Preventing Electrostatic Damage

ATTENTION This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal

!operation. Follow these guidelines when you handle this equipment.

•Touch a grounded object to discharge potential static.

•Wear an approved grounding wriststrap.

•Do not touch connectors or pins on component boards.

•Do not touch components inside the equipment.

•If available, use a static±safe workstation.

•When not in use, keep modules in appropriate static±safe packing.

mm n s

mm n s

New Information

The information below summarizes the changes to the Remote I/O Adapter User Manual, publication 1794-UM009D±EN±P, since the last release.

The series E adapter is capable of recognizing the safe state data for the FLEX Integra analog modules, and allows use of 32 point FLEX I/O modules. You must use a series D or later adapter when using FLEX Integra analog modules in your system.

The following new information is included in this version of the publication:

Corrected Switch Positions

Switch positions on S! and S2 were incorrectly identified in the previous version of this publication. Corrections have been made on page 2±11 of Chapter 2.

Additional FLEX I/O Modules

New modules available since the last version of this publication have been added.

Change Bars

The areas in this manual which are different from previous editions are marked with change bars (as shown to the right of this paragraph) to indicate the addition of new or revised information.

Publication 1794 UM009D-EN-P - April 2004

soc±ii

Summary of Changes

Publication 1794 UM009D-EN-P - April 2004

Preface

Using This Manual

Preface Objectives

Audience

Vocabulary

Read this preface to familiarize yourself with this manual and to learn how to use it properly and efficiently.

Important:

You must use a series D or later adapter to IMPORTANT communicate with FLEX Integra analog modules. You

must use a series E or later adapter to communicate with 32 point FLEX modules.

We assume that you have previously used an Allen±Bradley programmable controller, that you are familiar with its features, and that you are familiar with the terminology we use. If not, read the user manual for your processor before reading this manual.

In this manual, we refer to:

•the individual adapter module as the ªadapter.º

•the programmable controller as the ªcontrollerº or the ªprocessor.º

•input and output modules as the ªmodule.º

What This Manual

Contains

The contents of this manual are as follows:

Table P. A

What This Manual Contains

	Chapter	Title	What's Covered
	1	Overview of FLEX I/O and the Remote	Describes features, capabilities, and hardware
		I/O Adapter Module	components.
	2	Installing Your Remote I/O Adapter	Procedures and guidelines for installing the module
	3	Communicating with FLEX I/O Modules	Hardware addressing and configuration options
	4	Troubleshooting	Troubleshooting aids

Appendix	Title	What's Covered
A	Specifications	Module specifications

BDifferences Between Series A, B, C, D and E Remote I/O Adapters

CSafety Approvals

Publication 17945UM009D-EN-P - April 2004

P±2 Using This Manual

Conventions	We use these conventions in this manual:
	In this manual, we show:	Like this:
	that there is more information about a topic
	in another chapter in this manual

that there is more information about the

topic in another manual

More

For Additional Information

For additional information on FLEX I/O systems and modules, refer to the following documents:

						Publications
		Catalog
		Number	Voltage		Description	Installation	User
						Instructions	Manual
		1794		1794 FLEX I/O Product Data		179442.1
		17944ACN	24V dc	ControlNet Adapter		179445.8
		17944ACNR	24V dc	Redundant Media ControlNet Adapter		179445.18
		17944ACN15	24V dc	ControlNet Adapter		179445.47
		17944ACNR15	24V dc	Redundant Media ControlNet Adapter		179445.48
		17944ADN	24V dc	DeviceNet Adapter		179445.14	179446.5.5
		17944ASB/E	24V dc	Remote I/O Adapter		17944IN046	17944UM009
		17944ASB2/D	24V dc	24Slot Remote I/O Adapter		17944IN044	17944UM059
		17944APB	24V dc	Profibus Adapter		17944IN040	17944UM057
		17944IB8	24V dc	8 Sink Input Module		179445.30
		17944OB8	24V dc	8 Source Output Module		179445.31
		17944IB16	24V dc	16	Sink Input Module	17944IN072
		17944IB32	24V dc	16	Source Output Module	17944IN084
		17944OB16	24V dc	16	Source Output Module	179445.3
		17944OB16P	24V dc	16	Source Output Module	179445.45
		17944OB32P	24V dc	32	Electronically Fused Output Module	17944IN090
		17944IV16	24V dc	16	Source Input Module	179445.28
		17944OV16	24V dc	16	Sink Output Module	179445.29
		17944OB8EP	24V dc	8 Electronically Fused Output Module		179445.20
		17944OV16P	24V dc	16	Electronically Fused Output Module	179445.52
		17944IB8S	24V dc	Sensor Input Module		179445.7
		17944IB10XOB6	24V dc	10	Input/6 Output Module	179445.24
		17944IB16XOB16P	24V dc	16	Input/16 Output Module	17944IN083
					Table continued on next page

Publication 17944UM009D-EN-P - April 2004

				Using This Manual		P±3
					Publications
	Catalog	Voltage		Description
	Number				Installation	User
					Instructions	Manual
	17948OW8	24V dc	8	Relay Output Module	179485.19
	17948IE8	24V dc	Selectable Analog 8 Input Module		179485.6
	17948OE4	24V dc	Selectable Analog 4 Output Module		179485.5	179486.5.2
	17948IE4XOE2	24V dc	4	Input/2 Output Analog Module	179485.15
	17948OF4I	24V dc	4	Output Isolated Analog Module	179485.37
	17948IF4I	24V dc	4	Input Isolated Analog Module	179485.38	179486.5.8
	17948IF2XOF2I	24V dc	2	Input/2 Output Isolated Analog Module	179485.39
	17948IR8	24V dc	8 RTD Input Analog Module		179485.22	179486.5.4
	17948IT8	24V dc	8	Thermocouple Input Module	179485.21	179486.5.7
	17948IRT8	24V dc	8 Thermocouple/RTD Input Module		179485.50	179486.5.12
	17948IJ2	24V dc	2	Frequency Input Module	179485.49	179486.5.11
	17948ID2	24V dc	2	Channel Frequency Input Module	179485.63	179486.5.15
	17948IP4	24V dc	2	Channel Pulse Counter Module	179485.64	179486.5.16
	17948HSC	24V dc	High Speed Counter Module		179485.67	179486.5.10
	17948IC16	48V dc	48V dc 16 Input Module		179485.53
	17948OC16	48V dc	48V dc Output Module		179485.54
	17948IA8	120V ac	8	Input Module	179485.9
	17948OA8	120V ac	8	Output Module	179485.10
	17948IA8I	120V ac	Isolated 8 Input Module		179485.55
	17948OA8I	120V ac	Isolated Output Module		179485.56
	17948IA16	120V ac	16 Input Module		179485.60
	17948OA16	120V ac	16 Output Module		179485.61
	17948IM8	220V	8	Input Module	179485.57
		ac/dc
	17948OM8	220V	8	Output Module	179485.58
		ac/dc
	17948TB2		28wire Terminal Base		17948IN070
	17948TB3		38wire Terminal Base
	17948TBN		Terminal Base Unit		17948IN016
	17948TBNF		Fused Terminal Base Unit		179485.17
	17948TB3T		Temperature Terminal Base Unit		179485.41
	17948TB3S		Spring Clamp Terminal Base Unit		179485.42
	17948TB3TS		Spring Clamp Temperature Base Unit		179485.43
	17948TB3G		Terminal Base Unit		179485.51
	17948TB3GS		Spring Clamp Terminal Base Unit		179485.59
	17948TB32		Cage Clamp Terminal Base Unit		17948IN085
	17948TB32S		Spring Clamp Terminal Base Unit		17948IN085
				Table continued on next page

Publication 17948UM009D-EN-P - April 2004

		P±4	Using This Manual
								Publications
					Catalog	Voltage	Description
					Number			Installation	User
								Instructions	Manual
					1794;CE1, ;CE3		Extender Cables	1794;5.12
					1794;NM1		Mounting Kit	1794;5.13
					1794;PS13	24V dc	Power Supply	1794;5.35
					1794;PS3	24V dc	Power Supply	1794;5.71
							FLEX Ex
					1797;IBN16	See note	16 NAMUR Digital Input Module	1794;IN072
					1797;OB4D	See note	4 NI, Ex Source Digital Output Module	1794;5.6
					1797;IE8	See note	8 Selectable Input Module	1794;5.5
					1797;IE8NF	See note	8 Selectable Filter Analog Input Module	1794;5.31
					1797;OE4	See note	Selectable Analog 4 Output Module	1794;5.3
					1797;IRT8	See note	8 Thermocouple/RTD Input Module	1794;5.4
					1797;IJ2	See note	2 Frequency Input Module	1794;5.9
					1797;TB3		3;wire Screw Clamp Terminal Base	1797;5.1
					1797;TB3S		3;wire Spring Clamp Terminal Base	1797;5.2
					1797;BIC	See note	I.S. Bus Isolator	1797;5.13
					1797;CEC	See note	FLEX Ex Bus Connector	1797;5.13

Note: Intrinsically Safe Voltage

ATTENTION

!

FLEX I/O is grounded through the DIN rail to chassis ground. Use zinc plated, yellow chromated steel DIN rail to assure proper grounding. Using other DIN rail materials (e.g. aluminum, plastic, etc.) which can corrode, oxidize or are poor conductors can result in improper or intermittent platform grounding.

Publication 1794;UM009D-EN-P - April 2004

Using This Manual

P±5

ATTENTION Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic

!discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

•Touch a grounded object to discharge potential static.

•Wear an approved grounding wriststrap.

•Do not touch connectors or pins on component boards.

•Do not touch circuit components inside the equipment.

•If available, use a static±safe workstation.

•When not in use, keep modules in appropriate static±safe packaging.

WARNING Remove field-side power before removing or inserting this module. This module is designed so

!you can remove and insert it under backplane power. When you remove or insert a module with field-side power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:

•sending an erroneous signal to your system's field devices causing unintended machine motion

•causing an explosion in a hazardous environment Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

Publication 1794 UM009D-EN-P - April 2004

P±6	Using This Manual

Summary

This preface gave you information on how to use this manual efficiently. The next chapter introduces you to the remote I/O adapter module.

Publication 1794 UM009D-EN-P - April 2004

Table of Contents

Overview of FLEX I/O and your Remote I/O Adapter Module

Installing Your Remote I/O

Adapter Module

Communicating with FLEX I/O Modules

Chapter 1

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-1
The FLEX I/O System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-1
How FLEX I/O Modules Communicate with Programmable Controllers	1-2
Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-3
Diagnostic Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-3
Reset Pushbutton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-4
Remote I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-4
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-4
Address Switch Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-4
Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1-4

Chapter 2

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-1
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-3
Mounting the Remote I/O Adapter . . . . . . . . . . . . . . . . . . . . . . . . .	2-3
Mounting on a DIN Rail before installing the terminal base units . .	2-3
Mounting (or Replacing) the Adapter on an Existing System . . . .	2-4
Mounting on a Wall or Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-5
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-7
Setting the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-8
Starting I/O Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-8
I/O Rack Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-8
Hold Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-8
Rack Fault Select Switch (RFS) . . . . . . . . . . . . . . . . . . . . . . . .	2-9
Addressing Mode Selection Switches . . . . . . . . . . . . . . . . . . . .	2-9
Communication Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-10
Processor Restart Lockout (PRL) . . . . . . . . . . . . . . . . . . . . . . .	2-10
Hold Last State (HLS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-10
Setting the Mode Selection Switches . . . . . . . . . . . . . . . . . . . . . . .	2-12
Setting the Address Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-13
Setting the Address Switches for Complementary I/O . . . . . . . . . . .	2-15
Primary Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-15
Complementary Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-15
Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2-15

Chapter 3

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-1
FLEX I/O Module Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-1
Addressing I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-2
Analog (Block Transfer) Modules . . . . . . . . . . . . . . . . . . . . . . . . .	3-5

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ii	Table of Contents

Troubleshooting

Specifications

Differences Between

Remote I/O Adapter Series

A, B, C, D and E

Safety Approvals

Standard Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-6
Standard - 32 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-7
Compact Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-8
Compact Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-8
Complementary Addressing Mode . . . . . . . . . . . . . . . . . . . . . . . .	3-12
Complementary Mode - 168point . . . . . . . . . . . . . . . . . . . . . . .	3-12
Complementary Mode - 88point . . . . . . . . . . . . . . . . . . . . . . . .	3-13
Complementary - 32 Addressing . . . . . . . . . . . . . . . . . . . . . . . . .	3-15
Mapping Data into the Image Tables . . . . . . . . . . . . . . . . . . . . . . .	3-16
Determining Rack Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-16
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-18
Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3-18

Chapter 4

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4-1
Fault Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4-1
Troubleshooting with the Indicator Lights . . . . . . . . . . . . . . . . . . . .	4-1
Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4-3

Appendix A

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A-1

Appendix B

Differences Between Remote I/O Adapter Series A, B, C, D and E . .

B-1

Appendix C

Safety Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C-1

Publication 17948UM009D-EN-P - April 2004

Ch pt r 1

Chapter Objectives

The FLEX I/O System

Adapter

Overview of FLEX I/O and your Remote I/O Adapter Module

In this chapter, we tell you about:

•what the FLEX I/O system is and what it contains

•how FLEX I/O modules communicate with programmable controllers

•the features of your adapter module

FLEX I/O is a small, modular I/O system for distributed applications that performs all of the functions of rack-based I/O. The FLEX I/O system contains the following components shown below:

Terminal Base

I/O Module

20125

•adapter/power supply ± powers the internal logic for as many as eight I/O modules

•terminal base ± contains a terminal strip to terminate wiring for twoor three-wire devices

•I/O module ± contains the bus interface and circuitry needed to perform specific functions related to your application

Publication 1794 UM009D-EN-P - April 2004

1±2	Overview of FLEX I/O and your Remote I/O Adapter Module

How FLEX I/O Modules Communicate with Programmable Controllers

Data transfer to and from the remote I/O adapter/power supply and discrete I/O modules occurs every flexbus scan. This provides the controller with updated data.

The remote I/O adapter/power supply transfers data to the analog I/O module (block transfer write) and from the analog I/O module (block transfer read) using BTW and BTR instructions in your ladder diagram program. These instructions let the adapter obtain input values and status from the I/O module, and let you send output values to establish the module's mode of operation. The communication process is described in the following illustration.

Allen Bradley

		ADAPTER						24VDC
						LOCAL		POWER SUPPLY
PWR	ACTIVE			FAULT		FAULT
								RIO ADAPTER

1794=ASB

1

The adapter transfers your configuration data to the module using a BTW.

Flexbus

2

External devices transmit analog signals to the module.

Allen Bradley

1794-IE8

ANALOG INPUT

2

4
	INPUT 0 INPUT 1		INPUT 2 INPUT 3	INPUT 4	INPUT 5	INPUT 6	INPUT 7
Your ladder program instructs the	I V	I V	I V I V	I V	I V	I V	I V
adapter to perform a BTR of the values
and stores them in a data table.
5							3

The adapter and module determine that the transfer was made without error and input values are within specified range.

6

Your ladder program can use and/or move the data (if valid) before it is written over by the transfer of new data in a subsequent transfer.

7

Your ladder program performs BTWs to the module when you power it up, and any time you wish to reconfigure the module.

The module converts analog signals into binary format and stores these values until the adapter requests their transfer.

Publication 1794=UM009D-EN-P - April 2004

Overview of FLEX I/O and your Remote I/O Adapter Module

1±3

Hardware Components

The adapter module consists of the following major components:

•diagnostic indicators

•reset pushbutton

•remote I/O wiring connections

•24V dc power wiring connections

•address/group switch assemblies

		Allen6Bradley
			24 VDC
	ADAPTER	LOCAL	POWER SUPPLY
PWR	ACTIVE FAULT	FAULT	RIO ADAPTER
Diagnostic Indicators			1794-ASB
Reset Pushbutton
			24V dc Common Wiring Connections
Address/Group Switches
			+24V dc Wiring Connections
			Remote I/O Wiring Connections (connector part no. 942029-03)

Diagnostic Indicators

Diagnostic indicators are located on the front panel of the adapter module. They show both normal operation and error conditions in your remote I/O system. The indicators are:

•Power ON (green)

•Adapter ACTIVE (green)

•Adapter FAULT (red)

• LOCAL FAULT (red)

A complete description of the diagnostic indicators and how to use them for troubleshooting is explained in chapter 4.

Publication 17946UM009D-EN-P - April 2004

1±4	Overview of FLEX I/O and your Remote I/O Adapter Module

Flip open
cover	8	8
	7	7

6	6
5	5
4	4
3	3
2	2
1	1
ON	ON

S1 S2

Chapter Summary

Reset Pushbutton

Use the reset pushbutton to reset the adapter module and resume communication when a communication error occurs. (The adapter's processor restart lockout switch (PRL) must be in the ªlocked outº position.) If the adapter is not locked out by the PRL switch, it

will be automatically reset via special commands sent over the communication link.

Important: Do not cycle power to the adapter to clear a fault. All queued block transfer instructions will be lost.

Remote I/O Wiring

The remote I/O wiring termination is made to a plug-in connector on the front of the adapter module. Refer to Chapter 2 for information on wiring the connector.

Power Wiring

Connections are provided for connecting the required 24V dc power to the front of the module. The power wiring can be daisy-chained to the terminal base unit located next to the adapter to supply power to the module installed in that base unit. Wiring information is shown in Chapter 2.

Address Switch Assemblies

Multi-position switches are provided for:

•starting I/O group

•I/O rack number

•hold inputs

•mode switches for mode 0, mode 1, mode 2, mode 3 and mode 4

•rack fault

•communication rate

•processor restart lockout (PRL)

•hold last state (outputs)

These switches are accessed by lifting the hinged cover on the front of the module. Refer to Chapter 2 for switch settings.

In this chapter you learned about the FLEX I/O system and features of the remote I/O adapter module.

Publication 1794 UM009D-EN-P - April 2004

Ch pt r 2

Installing Your Remote I/O

Adapter Module

Chapter Objectives

This chapter describes the procedures for installing your remote I/O adapter module. These include:

•power requirements

•mounting the remote I/O adapter

•setting the module switches

ATTENTION

!

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664±1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as ªopen typeº equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present, and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosures. Also, see the appropriate sections in this publication, as well as the Allen±Bradley publication 1770±4.1, (ªIndustrial Automation Wiring and Grounding Guidelinesº), for additional installation requirements pertaining to this equipment.

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2±2	Installing Your Remote I/O Adapter Module

ATTENTION

!

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

•Touch a grounded object to discharge potential static.

•Wear an approved grounding wriststrap.

•Do not touch connectors or pins on component boards.

•Do not touch circuit components inside the equipment.

•If available, use a static±safe workstation.

•When not in use, keep modules in appropriate static±safe packaging.

ATTENTION

!

Remove field-side power before removing or inserting this module. This module is designed so you can remove and insert it under backplane power. When you remove or insert a module with field-side power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:

•sending an erroneous signal to your system's field devices causing unintended machine motion

•causing an explosion in a hazardous environment

Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

ATTENTION

!

FLEX I/O is grounded through the DIN rail to chassis ground. Use zinc plated, yellow chromated steel DIN rail to assure proper grounding. Using other DIN rail materials (e.g. aluminum, plastic, etc.) which can corrode, oxidize or are poor conductors can result in improper or intermittent platform grounding.

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Installing Your Remote I/O Adapter Module

2±3

Power Requirements

Mounting the Remote I/O

Adapter

A

The Remote I/O adapter module requires a current of 450mA at 24V dc from an external power supply for flexbus operation. This is sufficient to support the flexbus current requirements of 8 modules. Remember to add this amount to current requirements for other modules using the same 24V supply.

The remote I/O adapter module can be DIN rail or wall/panel mounted. Refer to the specific method of mounting below.

Mounting on a DIN Rail before installing the terminal base units

B

C

C

1.Position the remote I/O adapter module A on a 35 x 7.5mm DIN rail B (A-B pt. no. 199-DR1; 46277-3; EN 50022) at a slight angle.

2.Rotate the adapter module onto the DIN rail with the top of the rail hooked under the lip on the rear of the adapter module.

3.Press the adapter module down onto the DIN rail until flush. Locking tab (C) will snap into position and lock the adapter module to the DIN rail.

If the adapter module does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter module flush onto the DIN rail and release the locking tab to lock the adapter module in place. If necessary, push up on the locking tab to lock.

4.Connect the adapter wiring as shown under ªWiringº later in this document.

Make certain that the DIN rail is properly IMPORTANT grounded to the panel. Refer to ªIndustrial

Automation Wiring and Grounding Guidelines,º publication 1770-4.1.

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2±4	Installing Your Remote I/O Adapter Module

Mounting (or Replacing) the Adapter on an Existing System

ATTENTION

!

If you connect or disconnect wiring while the field side power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

1.Remove the RIO plug-in connector from the front of the adapter.

2.Disconnect any wiring connected to the adjacent terminal base.

3.Using a screwdriver or similar tool, open the lock and remove the module from the base unit to which the adapter will be attached.

4.Push the flexbus connector toward the right side of the terminal base to unplug the backplane connection.

ATTENTION

!

Make certain that the flexbus connector is completely clear of the adapter. The slide must be completely to the right and the raised spot on the slide visible.

5.Release the locking tab and remove the adapter.

6.Before installing the new adapter, notice the notch on the right rear of the adapter. This notch accepts the hook on the terminal base unit. The notch is open at the bottom. The hook and adjacent connection point keep the terminal base and adapter tight together, reducing the possibility of a break in communication over the backplane.

ATTENTION

!

Make certain that the hook on the terminal base is properly hooked into the adapter. Failure to lock the hook into the adjacent base/adapter can result in loss of communication on the backplane.

7.Place the adapter next to the terminal base unit and push down to mate the hook into slot.

Publication 1794 UM009D-EN-P - April 2004