Spectrum Controls Micro800 2085-IR8-SC User Manual

ii Micro800TM 8-Channel RTD and Resistance Analog Input Module

User's Manual Pub. 0300321-01 Rev. A

Important Notes

1. Please read all the information in this owner’s guide before installing the

product.

2. The information in this owner's guide applies to hardware Series A and

firmware version 1.1, or later.

3. This guide assumes that the reader has a full working knowledge of the

relevant processor.

Notice

The products and services described in this owner's guide are useful in a wide variety of applications. Therefore, the user and others responsible for applying the products and services described herein are responsible for determining their acceptability for each application. While efforts have been made to provide accurate information within this owner's guide, Spectrum Controls, Inc. assumes no responsibility for the accuracy, completeness, or usefulness of the information herein.

Under no circumstances will Spectrum Controls, Inc. be responsible or liable for any damages or losses, including indirect or consequential damages or losses, arising out of either the use of any information within this owner's guide or the use of any product or service referenced herein.

No patent liability is assumed by Spectrum Controls, Inc. with respect to the use of any of the information, products, circuits, programming, or services referenced herein.

The information in this owner's guide is subject to change without notice.

Limited Warranty

Spectrum Controls, Inc. warrants that its products are free from defects in material and workmanship under normal use and service, as described in

Spectrum Controls, Inc.’s literature covering this product, for a period of 1 year.

The obligations of Spectrum Controls, Inc. under this warranty are limited to replacing or repairing, at its option, at its factory or facility, any product which shall, in the applicable period after shipment, be returned to the Spectrum Controls, Inc. facility, transportation charges prepaid, and which after examination is determined, to the satisfaction of Spectrum Controls, Inc. to be thus defective.

This warranty shall not apply to any such equipment which shall have been repaired or altered except by Spectrum Controls, Inc. or which shall have been subject to misuse, neglect, or accident. In no case shall the liability of Spectrum Controls, Inc. exceed the purchase price. The aforementioned provisions do not extend the original warranty period of any product which has either been repaired or replaced by Spectrum Controls, Inc.

Micro800TM 8-Channel RTD and Resistance Analog Input Module iii

Table of Contents

IMPORTANT NOTES ............................................................................................................................................ II

CHAPTER 1 MODULE OVERVIEW ..................................................................................................................... 1-1

SECTION 1.1 GENERAL DESCRIPTION .............................................................................................................................. 1-1

SECTION 1.2 INPUT SPECIFICATIONS ............................................................................................................................... 1-3

SECTION 1.3 DATA FORMATS ....................................................................................................................................... 1-7

SECTION 1.4 HARDWARE FEATURES .............................................................................................................................. 1-7

1.4.1 LED Blink Codes ......................................................................................................................................... 1-7

SECTION 1.5 SYSTEM OVERVIEW ................................................................................................................................... 1-8

CHAPTER 2 INSTALLATION AND WIRING .......................................................................................................... 2-1

SECTION 2.1 COMPLIANCE TO EUROPEAN UNION DIRECTIVES ............................................................................................. 2-1

2.1.1 EMC Directive ............................................................................................................................................ 2-1

SECTION 2.2 POWER REQUIREMENTS ............................................................................................................................ 2-1

SECTION 2.3 GENERAL CONSIDERATIONS ........................................................................................................................ 2-2

2.3.1 Hazardous Location Considerations .......................................................................................................... 2-2

2.3.2 Prevent Electrostatic Discharge ................................................................................................................ 2-2

2.3.3 Remove Power .......................................................................................................................................... 2-3

2.3.4 Selecting a Location .................................................................................................................................. 2-3

SECTION 2.4 MOUNTING ............................................................................................................................................. 2-3

2.4.1 Minimum Spacing ..................................................................................................................................... 2-4

2.4.2 Parts List ................................................................................................................................................... 2-4

2.4.3 Module Description ................................................................................................................................... 2-4

2.4.4 Insert Module Next to the Controller ........................................................................................................ 2-5

Wiring Diagram ................................................................................................................................................. 2-7

CHAPTER 3 CONFIGURING THE 2085-IR8-SC USING CCW .................................................................................. 3-1

SECTION 3.1 INTRODUCTION ........................................................................................................................................ 3-1

SECTION 3.2 IMPORTING A PROFILE INTO CCW SOFTWARE ................................................................................................ 3-2

SECTION 3.3 2085-IR8-SC TAB ON CCW ...................................................................................................................... 3-5

SECTION 3.4 SETTING CONFIGURATION PARAMETERS USING MCC .................................................................................... 3-7

SECTION 3.5 SOFTWARE INFORMATION ........................................................................................................................ 3-12

3.5.1 Software Versioning ................................................................................................................................ 3-12

3.5.2 Software Updates ................................................................................................................................... 3-12

3.5.3 Startup and Factory Default Conditions .................................................................................................. 3-12

3.5.4 PLC Interfaces ......................................................................................................................................... 3-12

3.5.5 Connection Types and Assembly Sizes .................................................................................................... 3-12

3.5.6 Configuration Table ................................................................................................................................ 3-13

3.5.7 Channel Configuration Bit Location Data ............................................................................................... 3-13

3.5.8 Channel Configuration Values ................................................................................................................ 3-14

3.5.9 Input Table .............................................................................................................................................. 3-15

3.5.10 Input Bit and Value Allocation .............................................................................................................. 3-15

3.5.11 Module and Channel Fault Bit and Value Description .......................................................................... 3-16

3.5.12 Software Revision ................................................................................................................................. 3-16

3.5.13 Channel Status ...................................................................................................................................... 3-16

3.5.14 Channel Data ........................................................................................................................................ 3-17

3.5.15 Output Table ......................................................................................................................................... 3-17

3.5.16 Output Bit Allocation ............................................................................................................................ 3-18

3.5.17 Output Bit Description .......................................................................................................................... 3-18

SECTION 3.6 PRODUCT FEATURES ................................................................................................................................ 3-18

User's Manual Pub. 0300321-01 Rev. A

iv Micro800TM 8-Channel RTD and Resistance Analog Input Module

3.6.1 Data Format ............................................................................................................................................ 3-18

3.6.2 Input Type ............................................................................................................................................... 3-18

3.6.3 Channel Bias ........................................................................................................................................... 3-21

3.6.4 Channel Temperature ............................................................................................................................. 3-22

3.6.5 Connection Method ................................................................................................................................ 3-22

3.6.6 Input ADC Filter ....................................................................................................................................... 3-24

3.6.7 Open Circuit Detection ............................................................................................................................ 3-24

3.6.8 Stimulus/Response Sequences ................................................................................................................ 3-24

3.6.9 Process Alarm and Latching .................................................................................................................... 3-26

3.6.10 Under/Over Range Alarms .................................................................................................................... 3-27

3.6.11 ADC Alarm ............................................................................................................................................. 3-28

3.6.12 Channel Scan Rate ................................................................................................................................ 3-28

3.6.13 Module Specific Hardware Errors ......................................................................................................... 3-29

3.6.14 Module Specific Configuration Errors ................................................................................................... 3-29

SECTION 3.7 TECHNICAL ASSISTANCE ........................................................................................................................... 3-31

SECTION 3.8 DECLARATION OF CONFORMITY ................................................................................................................ 3-31

APPENDIX A MANUALLY IMPORTING AN AOP ................................................................................................. A-1

INDEX ............................................................................................................................................................. I-1

User's Manual Pub. 0300321-01 Rev. A

Preface

NOTE

Before you access any equipment or begin to install any IO modules, review all safety material and warnings in the Micro830, Micro850, and Micro870 Programmable Controllers User Manual. Be sure to review the warnings provided in this document before you start installing a module in a system.

For

Refer to this Document

Allen-Bradley Pub. No.

Product outline

Micro850 Programmable Logic Controller Product Profile

2080-PP003

Selection information

Micro800 Programmable Controllers Family Selection Guide

2080-SG001

General instructions for using

Micro800 Programmable Controllers General Instructions

2080-RM001

Installing an external power supply

Micro800 External AC Power Supply Installation Instructions

2080-IN001

Micro870 24V DC Expansion Power Supply Installation Instructions

2085-IN008

Who Should Use This Manual

Micro800TM 8-Channel RTD and Resistance Analog Input Module v

Read this preface to familiarize yourself with the rest of the manual. This preface covers the following topics:

• Who should use this manual

• How to use this manual

• Related documentation

• Technical support

• Documentation

• Conventions used in this manual

Use this manual if you are responsible for designing, installing, programming, or troubleshooting control systems that use the Micro800TM 8-Channel RTD and Resistance Analog Input Module.

How to Use This Manual

Chapter 1 Module Overview

This chapter describes the following topics:

• General description

• Input specifications

• Data formats

• Hardware features

• System overview

The Micro800™ 2085-IR8-SC is an isolated. 8-channel RTD/Resistance module designed to expand the local I/O capability of Rockwell Automation Micro850 and Micro870 Systems over its Expansion I/O buses. The minimum system requirement in which an Expansion I/O Module can be installed is a Micro850 or Micro870 Controller and a controller power supply.

The number of 2085-IR8-SC modules that can be installed with a Micro850/870 PLC is based on the current controller firmware revision and CCW software revision.

Section 1.1 General Description

1-2 Chapter 1: Module Overview

User's Manual Pub. 0300321-01 Rev. A

The module provides up to eight, concurrent channels of 2-, 3-, or 4-wire RTD and resistance measurements. It provides RTD types Pt 385, Pt 3916, Cu 426, Ni 618, Ni 672, Ni-Fe 518, and direct ohm (0-150, 0-500, 0-1000, 0-3000) measurements.

The module provides:

• 8 input channels of RTD and resistance measurements.

• Four data formats.

• Range scaling of input data.

• Four filter frequencies.

• Units in Degrees Centigrade and Fahrenheit.

• Channel bias adjustment.

• Alarm notification on each channel status:

- Over or under range detection (from user-defined values).

- Process alarm and latching.

- Open wire detection.

- ADC communication fault.

All inputs have fault tolerance and ESD protection to avoid damage to circuitry on the board. The modules use 50 VAC working Reinforced Insulation between the inputs and the backplane.

The 2085-IR8-SC module uses a 20-bit Sigma-Delta analog-to-digital converter to achieve 16-bit resolution.

Each input channel is individually configurable via Rockwell-provided Connected Component Workbench (CCW) software for the Micro850 and Micro870 family controllers or with the Module Configuration Converter (MCC) utility from Spectrum Controls, Inc.

The module is factory calibrated and tested before shipping. After installation, the modules begin operation in a default, usable condition without user parameters first being set up or defined. During power startup, all inputs are disabled and off until a valid configuration has been received. The default configuration is for all channels enabled in the 3-wire, 100PT385 range with the 17 Hz filter in Engineering ×1 units.

Chapter 1: Module Overview 1-3

User's Manual Pub. 0300321-01 Rev. A

Section 1.2 Input Specifications

The 2085-IR8-SC module has the following input specifications:

Table 1-1. Input/Performance/Environmental Requirements

Input Description

Value

Operating Temperature

-20 ºC to 65 ºC (-4 ºF to 149 ºF)

Storage/Non-Operating Temperature

-40 ºC to 85 ºC (-40 ºF to 185 ºF)

Operating Humidity

5% to 95%, non-condensing

Storage/Non-Operating Humidity

5% to 85%, non-condensing

Vibration/Operating

10 Hz to 500 Hz, 2 G, 0.030 max peak-to-peak

Operating Shock

25 G, peak acceleration, 11±1 ms pulse, half sine

Storage/Non-Operating Shock

25 G peak acceleration, 11±1 ms pulse, half sine; 35 G for panel mount.

Pollution Level

Meets Pollution Degree 2 requirements.

Inputs per module

Eight 2-wire, 3-wire, or 4-wire resistance, or RTD differential input channels

Input ranges

RTD:

100 Ω, 200 Ω, 500 Ω and 1000 Ω PT385 and Pt3916, 10 0Ω Ni618, 120 Ω Ni672, 10 Ω Cu 426, 604 Ω NiFe 518

Resistance:

0-150 Ω, 0-500 Ω, 0-1000 Ω, 0-3000 Ω

Input filters

4 Hz, 17 Hz, 60 Hz, 470 Hz

RTD accuracy

Error at 25 C Max

Error over -20 C to 65 C Max

100 Ω PT385, -200 ºC to 850 ºC

±0.6

±0.9

200 Ω PT385, -200 ºC to 850 ºC

±0.5

±0.8

500 Ω PT385, -200 ºC to 850 ºC

±0.5

±0.7

1000 Ω PT385, -200 ºC to 850 ºC

±0.5

±0.7

100 Ω PT3916, -200 ºC to 630 ºC

±0.6

±0.8

200 Ω PT3916, -200 ºC to 630 ºC

±0.5

±0.7

500 Ω PT3916, -200 ºC to 630 ºC

±0.5

±0.6

1000 Ω PT3916, -200 ºC to 630 ºC

±0.5

±0.6

100 Ω Ni618, -100 ºC to 260 ºC

±0.4

120 Ω Ni672, -80 ºC to 260 ºC

±0.3

±0.4

10 Ω Cu 426, -100 ºC to 260 ºC

±3.6

±4.0

604 Ω NiFe 518, -100 ºC to 200 ºC

±0.3

±0.4

Resistance accuracy

Error at 25 °C, (Ohms) Max

Error over -20 °C to 65 °C, (Ohms) Max

0 to 150 Ω

±0.2

±0.3

1-4 Chapter 1: Module Overview

User's Manual Pub. 0300321-01 Rev. A

Input Description

Value

0 to 500 Ohm

±0.4

±0.5

0 to 1 kΩ

±0.6

±1

0 to 3 k Ω

±1.4

±1.8

Repeatability (at 25 ºC)

4 Hz filter

17 Hz filter

60 and 470 Hz filters1

RTD

Platinum 385

± 0.2 °C

± 2.0 °C

Platinum 3916

± 0.2 °C

± 2.0 °C

Copper

± 0.3 °C

± 2.6 °C

Nickel

± 0.1 °C

± 1.0 °C

Nickel-Iron

± 0.1 °C

± 0.5 °C

Resistance

0 to 150 Ω

± 0.05 Ω

± 0.1 Ω

± 0.5 Ω

0 to 500 Ohm

± 0.08 Ω

± 0.15 Ω

± 0.7 Ω

0 to 1 kΩ

± 0.1 Ω

± 0.2 Ω

± 1.5 Ω

0 to 3 kΩ

± 0.2 Ω

± 0.3 Ω

± 2.0 Ω

Filters

CMRR

84 dB minimum at 50 and 60 Hz for 4 Hz and 17 Hz filters

NMRR 4 Hz filter

72 dB minimum at 50 and 60 Hz

17 Hz filter

62 dB minimum at 50 and 60 Hz

Crosstalk

-70 dB maximum

Cable resistance (applies only to 3 wire and 4-wire RTD & resistance measurements)

25 Ω maximum, 10 Ω maximum for 10 Ω Cu 426

These filters do not reject 50/60 Hz. Repeatability for these filters is strongly dependent on how much 50/60 Hz noise is in the

system.

Chapter 1: Module Overview 1-5

User's Manual Pub. 0300321-01 Rev. A

Input Description

Value

RES/RTD Current source (Excitation current)

Excitation Current*

Range

420 µA

150 Ω, 500 Ω, 100 Ω Ni 618, 120 Ω Ni 672, 100 Ω PT 385, 200 Ω PT 385, 100 Ω PT 3916, 200 Ω

PT 3916, 10 Ω Cu 426

210 µA

1000 Ω, 3000 Ω, 500 Ω PT 385,

1000 Ω PT 385, 500 Ω PT 3916,

1000 Ω PT 3916, 604 Ω NiFe 518

* typically, ±5% at 25 °C, ±8% from -20 °C to 65 °C

Isolation

Input to backplane isolation

50 VAC RMS working Reinforced isolation tested at 2 k VDC for 1 minute.

Input to chassis GND isolation

50 VAC RMS working Reinforced isolation tested at 2 k VDC for 1 minute.

Channel-to-channel, low-level isolation

10 VDC measured between the IN-leads. Maximum voltage between any two pins must be limited to 28 VDC.

Power Requirements

Bus +5 V (4.75 V to 5.4 V)

94 mA maximum

Bus +24 V (19.9 V to 26.4 V)

15 mA maximum

Power dissipation within module

0.9 W maximum

Peak Inrush current

Less than 150 mA at 5 V. Less than 400 mA at 24 V.

Fault detection

Over/under range for all types. Open Circuit detection is supported on all ranges and wire

types.

Wire Installation

Wire size

#16 to #28 AWG

Wire Strip Length

0.375 in.

Recommended Tightening Torque:

2.25 N-m (2.2 lb-in)

RoHS

Meets European RoHS component standards (January 2015 and earlier).

REACH

Meets European REACH 7 requirements.

Module Dimensions

110 mm × 87 mm × 51 mm (plastic only). (4.33 in × 3.43 in × 2.00 in) 110 mm × 89 mm × 51 mm (with RTBs installed). (4.33 in × 3.5 in × 2.00 in)

1-6 Chapter 1: Module Overview

User's Manual Pub. 0300321-01 Rev. A

Table 1-2. EMC Specification Table

Environmental Tests

Test Level Limits

Radiated Emissions

(Enclosure) Class A, 30 MHz – 1 GHz

Conducted Emissions

Group 1, Class A (AC Mains), 150 kHz – 30 MHz

ESD immunity (Performance Criteria B)

6 kV Indirect (Coupling Plate) 6 kV Contact Discharge (to points of initial contact) 8 kV Air Discharge (to points of initial contact)

Radiated Immunity

10 V/M with 200 Hz square-wave 50% Pulse 100% AM at 900 and at 1890 MHz

10 V/M with 1 kHz sine-wave 80% AM from 80…2000 MHz

10 V/M with 1 kHz sine-wave 80% AM from 2000…6000 MHz

EFT/B immunity (Performance Criteria B)

Signal Ports: ±2 kV @ 5 kHz for 5 minutes, Criteria B Power Ports: ±2 kV @ 5 kHz for 5 minutes, Criteria B

Surge transient immunity (Performance Criteria B)

Signal Ports: ±2 kV line-earth {CM} at 2 Ω on shielded ports

Power Ports

±2 kV CM at 12 Ω ±1 kV DM at 2 Ω

Conducted RF immunity (Performance Criteria A)

10 VRMS with 1 kHz sine wave 80% AM from 150 kHz…80 MHz on signal and power ports

Magnetic Field (Performance Criteria A)

30 Arms/m

AC Mains Voltage Dips, Interruptions and Variations

Follow the 61000-4-11.

Table 1-3. Safety Test Specification Table

Safety Tests

Industry Standards

UL Safety

UL 61010-2-201 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use - Part 2-201: Particular Requirements for Control Equipment (NRAQ, NRAQ7) cUL CAN/CSA C22.2 No. 61010-1-12 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements)

Chapter 1: Module Overview 1-7

User's Manual Pub. 0300321-01 Rev. A

UL Hazardous Locations

ULH ANSI/ISA–12.12.01–2007 Nonincendive Electrical Equipment for Use in Class I, Division 2 Hazardous (Classified) Locations (NRAG) cULH CSA C22.2 No. 213-M1987 - Non-incendive Electrical Equipment for use in Class I Division 2 Hazardous Locations - March 1987 (NRAG7) Temp code T5 or better, Pollution degree 2, gas groups a, b, c, & d

CE EMC Directive

IEC 61131-2 Programmable Controllers: Third Edition 2007-02, Clause 8 IEC 61000-6-2: Generic Industrial Immunity IEC 61000-6-4: Generic Industrial Emissions

Section 1.3 Data Formats

There are four data input types:

• Engineering units ×1

• Engineering units ×10

• Raw/proportional count

• Percentage Full Scale

Section 1.4 Hardware Features

Channels are wired as differential inputs. Open-circuit detection is available in the form of open circuit inputs on all ranges and wire types. Inputs are protected from electrostatic discharge up to 6 kV for indirect and contact discharge, 8 kV for air discharge.

1.4.1 LED Blink Codes

A 2085-IR8-SC module uses a single, green OK LED to show power or module operational status.

When startup is completed, and all internal tests have passed, the LED is solid GREEN. If the LED remains off, there is an error with the module: it may not have power, or the module failed to pass the self-test.

Table 1-4 LED Status Indicators

Indicator

State

Description

Fast blink green

Offline mode. This means the module has power but not yet been configured. Use CCW to download the configuration, then module will go into run mode.

Module OK LED Status

Off

No power applied to device or the module may have failed to pass its self-test.

Solid Green

RUN mode. Module has power runs normally.

1-8 Chapter 1: Module Overview

User's Manual Pub. 0300321-01 Rev. A

Indicator

State

Description

Blinking Green

LED blink status:

1. Internal use only.

2. Internal use only. 3: Calibration Data Invalid. 4: Serial Number Invalid. 5: Indicates ADC communication error.

Section 1.5 System Overview

The 2085-IR8-SC module is expected to operate indefinitely. It does not require periodic maintenance or calibration. The module communicates to the controller through the bus interface. The module also receives 5 VDC and 24 VDC through the bus interface.

Block diagram:

Isolator

Isolated

DC-DC

Converter

EXCx

Sense+x

RTNx

SENSE-x

Backplane

ASIC

Backplane

Communication

. .

channels

Processor

50VAC

Working

Reinforced

Isolation

5V DC

24V DC

(used by backplane

circuitry)

Status

Indicator

2085 Backplane

8 Input

Channels

ESD

Protection,

Channel

Multiplexing,

& Signal

Conditioning

RTB pins

A/D

Converter

Section 2.1

WARNING

The backplane power and the analog inputs of the device shall only be supplied by an Isolated Secondary Limited Energy Low Voltage source.

Compliance to European Union Directives

Chapter 2

Installation and Wiring

This chapter will cover:

• Compliance to European union directives

• Power requirements

• General considerations

• Installing the module

• Field wiring connections

This product is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

2.1.1 EMC Directive

The 2085-IR8-SC is tested to meet Council Directive 2014/30/EU Electromagnetic Compatibility (EMC) and the following standards, in whole or in part, documented in a technical construction file:

• IEC 61000-6-4 Electromagnetic compatibility (EMC)–Part 6-4: Generic

standards–Emission standard for industrial environments

• IEC 61000-6-2 Electromagnetic compatibility (EMC)–Part 6-2: Generic

standards–Immunity for industrial environments

• EN 61131-2 Programable controllers - Part 2: Equipment requirements

and tests

Section 2.2 Power Requirements

The module receives power through the bus interface from the +5 VDC/+24 VDC system power supply, and a 24 VDC field power supply. Both must be present for the module to operate.

Current rating at + 5 V is 94 mA maximum; for +24 V it is 15 mA maximum.

User's Manual Pub. 0300321-01 Rev. A

2-2 Chapter 2: Installation and Wiring

User's Manual Pub. 0300321-01 Rev. A

Power rating is 0.9 Watts maximum:

5 VDC

24 VDC

94 mA

15 mA

Section 2.3 General Considerations

The 2085-IR8-SC module is suitable for use in an industrial environment when installed in accordance with these instructions. Specifically, this equipment is intended for use in clean, dry environments Pollution degree 22.

2.3.1 Hazardous Location Considerations

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only. The following WARNING statement applies to use in hazardous locations.

WARNING

EXPLOSION HAZARD

• Substitution of components may impair suitability for Class I,

Division 2; Class II, Division 2; and Class III, Division 2. Do not replace components or disconnect equipment unless power has been switched off or the area is known to be non-hazardous.

• Do not connect or disconnect components unless power has been

switched off or the area is known to be non-hazardous.

• This product must be installed in an enclosure.

• All wiring must comply with N.E.C. article 501-4(b), 502-4(b), or

503-3(b), as appropriate for Class I, Class II, and Class III equipment.

2.3.2 Prevent Electrostatic Discharge

WARNING

Electrostatic discharge can damage integrated circuits or semiconductors if you touch I/O expansion port connector pins or the terminal block on the module. Follow these guidelines when you handle the module:

• Touch a grounded object to discharge static potential.

• Wear an approved wrist-strap grounding device.

• Do not touch the port connector or connector pins.

• Do not touch circuit components inside the module.

• If available, use a static-safe work station.

• When it is not in use, keep the module in its static-shield bag.

Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that occasionally

a temporary conductivity caused by condensation is expected.

Chapter 2: Installation and Wiring 2-3

User's Manual Pub. 0300321-01 Rev. A

2.3.3 Remove Power

WARNING

Remove power before removing or inserting this module. When you remove or insert a module with 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.

• Causing an electrical arc. Electrical arcing causes excessive wear

to contacts on both the module and its mating connector and may lead to premature failure.

2.3.4 Selecting a Location

Reducing Noise

Most applications require installation in an industrial enclosure to reduce the effects of electrical interference. Analog channels are highly susceptible to electrical noise. Electrical noise coupled to the analog channels will reduce the performance (accuracy) of the module. Group your modules to minimize adverse effects from radiated electrical noise and heat. Consider the following conditions when selecting a location for the analog module. Position the module:

• Away from sources of electrical noise such as hard-contact switches,

relays, and AC motor drives.

• Away from modules which generate significant radiated heat. Refer to

the module’s heat dissipation specification.

In addition, route shielded, twisted-pair analog input wiring away from any high voltage I/O wiring.

Section 2.4 Mounting

WARNING

Keeping module free of debris and avoiding overheating:

• Do not remove protective debris strip until after the module and

all other equipment near the module is mounted and the wiring is complete.

• Once wiring is complete, and the module is free of debris,

carefully remove protective strip.

• Failure to remove strip before operating can cause overheating.

+ 43 hidden pages

Spectrum Controls Micro800 2085-IR8-SC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important Notes

Chapter 1 Module Overview

Section 1.1 General Description

Section 1.2 Input Specifications

Section 1.3 Data Formats

Section 1.4 Hardware Features

1.4.1 LED Blink Codes

Section 1.5 System Overview

2.1.1 EMC Directive

Section 2.2 Power Requirements

Section 2.3 General Considerations

2.3.1 Hazardous Location Considerations

2.3.2 Prevent Electrostatic Discharge

2.3.3 Remove Power

2.3.4 Selecting a Location

Reducing Noise

Section 2.4 Mounting