Bailey IMFEC11 User manual

®
®
Process Control and
Automation Solutions
from Elsag Bailey Group
IMFEC11/12
Analog Input Module

WARNING notices as used in this instruction apply to hazards or unsafe practices that could result in
personal injury or death.
CAUTION notices apply to hazards or unsafe practices that could result in property damage.
NOTES highlight procedures and contain information that assists the operator in understanding the
information contained in this instruction.
WARNING
INSTRUCTION MANUALS
DO NOT INSTALL, MAINTAIN, OR OPERATE THIS EQUIPMENT WITHOUT READING, UNDERSTANDING,
AND FOLLOWING THE PROPER Elsag Bailey INSTRUCTIONS AND MANUALS; OTHERWISE, INJURY OR
DAMAGE MAY RESULT.
RADIO FREQUENCY INTERFERENCE
MOST ELECTRONIC EQUIPMENT IS INFLUENCED BY RADIO FREQUENCY INTERFERENCE (RFI). CAU-
TION SHOULD BE EXERCISED WITH REGARD TO THE USE OF PORTABLE COMMUNICATIONS EQUIP-
MENT IN THE AREA AROUND SUCH EQUIPMENT. PRUDENT PRACTICE DICTATES THAT SIGNS
SHOULD BE POSTED IN THE VICINITY OF THE EQUIPMENT CAUTIONING AGAINST THE USE OF POR-
TABLE COMMUNICATIONS EQUIPMENT.
POSSIBLE PROCESS UPSETS
MAINTENANCE MUST BE PERFORMED ONLY BY QUALIFIED PERSONNEL AND ONLY AFTER SECURING
EQUIPMENT CONTROLLED BY THIS PRODUCT. ADJUSTING OR REMOVING THIS PRODUCT WHILE IT IS
IN THE SYSTEM MAY UPSET THE PROCESS BEING CONTROLLED. SOME PROCESS UPSETS MAY
CAUSE INJURY OR DAMAGE.
NOTICE
The information contained in this document is subject to change without notice.
Elsag Bailey, its affiliates, employees, and agents, and the authors and contributors to this publication specif-
ically disclaim all liabilities and warranties, express and implied (including warranties of merchantability and
fitness for a particular purpose), for the accuracy, currency, completeness, and/or reliability of the information
contained herein and/or for the fitness for any particular use and/or for the performance of any material and/
or equipment selected in whole or part with the user of/or in reliance upon information contained herein.
Selection of materials and/or equipment is at the sole risk of the user of this publication.
This document contains proprietary information of Elsag Bailey, Elsag Bailey Process Automation, and
is issued in strict confidence. Its use, or reproduction for use, for the reverse engineering, development
or manufacture of hardware or software described herein is prohibited. No part of this document may be
photocopied or reproduced without the prior written consent of Elsag Bailey.

WBPEEUI240756A0
Preface
The IMFEC1MAnalog Input Module module supplies 15 field
inputs to the INFI 90®OPEN strategic process management
system. There are two variations available.
The IMFEC12 module interfaces to conventional transmitters
and standard analog inputs. It links process data and commu-
nication from field devices to all multifunction processors
(MFP), or the IMMFC03, IMMFC04 and IMMFC05 multifunc-
tion controller (MFC) modules. The IMFEC12 module can be
used as a direct replacement for the IMASI02 module; however,
baseband communications are not supported.
The IMFEC11 module performs all the functions of the
IMFEC12 module plus it is an interface for Bailey-Fischer &
Porter smart transmitters and other smart devices. It links pro-
cess data and communication from Bailey-Fischer & Porter
smart devices to all multifunction processors (MFP), or the
IMMFC03, IMMFC04 and IMMFC05 multifunction controller
(MFC) modules. The analog input module operates in one of
two modes: FSK field bus mode (FSK digital data and commu-
nication) and FSK analog point-to-point mode (analog inputs
with or without FSK digital communication available). The
IMFEC11 module can be used as a direct replacement for the
IMFBS01 Field Bus Module; however, baseband communica-
tions are not supported.
This instruction explains the FEC features, specifications and
operation. It explains how to set up and install the FEC mod-
ule, and covers troubleshooting procedures.
The system engineer or technician using the FEC module
should read and understand this instruction before installing
and operating the module. In addition, a complete understand-
ing of the INFI 90 OPEN system is beneficial.

WBPEEUI240756A0
®
List of Effective Pages
Total number of pages in this instruction is 53 consisting of the following:
Page No. Change Date
Preface Original
List of Effective Pages Original
iii through vii Original
1-1 through 1-8 Original
2-1 through 2-10 Original
3-1 through 3-6 Original
4-1 through 4-3 Original
5-1 through 5-4 Original
6-1 through 6-4 Original
7-1 Original
8-1 Original
A-1 through A-3 Original
B-1 through B-2 Original
C-1 through C-2 Original
Index-1 through Index-2 Original
When an update is received, insert the latest changed pages and dispose of the super-
seded pages.
NOTE: On an update page, the changed text or table is indicated by a vertical bar in the outer mar-
gin of the page adjacent to the changed area. A changed figure is indicated by a vertical bar in the
outer margin next to the figure caption. The date the update was prepared will appear beside the
page number.

Table of Contents
Page
WBPEEUI240756A0 iii
SECTION 1 - INTRODUCTION....................................................................................................1-1
OVERVIEW ..................................................................................................................1-1
INTENDED USER .........................................................................................................1-1
HARDWARE DESCRIPTION..........................................................................................1-1
HARDWARE APPLICATION...........................................................................................1-2
FEATURES...................................................................................................................1-3
INSTRUCTION CONTENT .............................................................................................1-3
HOW TO USE THIS INSTRUCTION ...............................................................................1-4
GLOSSARY OF TERMS AND ABBREVIATIONS .............................................................1-4
REFERENCE DOCUMENTS..........................................................................................1-5
NOMENCLATURE ........................................................................................................1-6
RELATED HARDWARE AND SOFTWARE ......................................................................1-6
SPECIFICATIONS .........................................................................................................1-7
SECTION 2 - DESCRIPTION AND OPERATION........................................................................2-1
INTRODUCTION...........................................................................................................2-1
GENERAL OPERATION.................................................................................................2-1
MFP/MFC MODULE OPERATION .................................................................................2-1
FUNCTIONAL OPERATION ...........................................................................................2-2
Microprocessor and Control Logic Circuitry ............................................................2-3
Module Input/Output Circuitry..............................................................................2-3
Analog Inputs (Point-to-Point Mode) .................................................................2-4
FSK Inputs (Field Bus Mode) IMFEC11 Only ....................................................2-5
Analog-to-Digital Converter ....................................................................................2-5
I/O Expander Bus Interface Circuitry .....................................................................2-6
Communication Circuitry (IMFEC11 only) ..............................................................2-7
FSK OPERATION (IMFEC11 ONLY) ...............................................................................2-8
SMART TRANSMITTER.................................................................................................2-8
FSK MODES OF OPERATION (IMFEC11 ONLY) ............................................................2-9
FSK Field Bus Mode ...............................................................................................2-9
FSK Analog Point-to-Point Mode .............................................................................2-9
SECTION 3 - INSTALLATION.....................................................................................................3-1
INTRODUCTION...........................................................................................................3-1
SPECIAL HANDLING ....................................................................................................3-1
UNPACKING AND INSPECTION ....................................................................................3-2
INSTALLATION IN HAZARDOUS LOCATIONS ...............................................................3-2
CONTROLLER MODULE (MFP/MFC) FIRMWARE REQUIREMENTS..............................3-2
DIPSWITCH AND JUMPER SETTINGS ..........................................................................3-3
Module Address Selection Switch (S1) ....................................................................3-3
Factory Test Jumper (J2) .......................................................................................3-4
IMFEC11 Operating Mode Jumper (J3)...................................................................3-4
IMFEC11 Communication Mode Jumper (J4) .........................................................3-5
IMFEC11 Input Jumpers (J6 through J20) .............................................................3-5
Termination Unit ...................................................................................................3-5
Installation ............................................................................................................3-6
SECTION 4 - OPERATING PROCEDURES................................................................................4-1
INTRODUCTION...........................................................................................................4-1
START-UP ....................................................................................................................4-1
OPERATION .................................................................................................................4-2
STATUS LED................................................................................................................4-3

iv WBPEEUI240756A0
Table of Contents (continued)
Page
®
SECTION 5 - TROUBLESHOOTING...........................................................................................5-1
INTRODUCTION .......................................................................................................... 5-1
MODULE STATUS REPORTS ....................................................................................... 5-1
Transmitter Status Reports (IMFEC11 ONLY) ......................................................... 5-2
Missing I/O Module Error ...................................................................................... 5-3
Blinking Green Status LED.................................................................................... 5-3
EDGE CONNECTOR PIN ASSIGNMENTS...................................................................... 5-3
SECTION 6 - MAINTENANCE.....................................................................................................6-1
INTRODUCTION .......................................................................................................... 6-1
PREVENTIVE MAINTENANCE SCHEDULE ................................................................... 6-1
EQUIPMENT AND TOOLS REQUIRED .......................................................................... 6-2
PREVENTIVE MAINTENANCE PROCEDURES .............................................................. 6-2
Checking Connections ........................................................................................... 6-2
Printed Circuit Board Cleaning .............................................................................. 6-3
General Cleaning and Washing........................................................................ 6-3
Edge Connector Cleaning ................................................................................ 6-3
SECTION 7 - REPAIR AND REPLACEMENT PROCEDURES ..................................................7-1
INTRODUCTION .......................................................................................................... 7-1
MODULE REPAIR AND REPLACEMENT ....................................................................... 7-1
SECTION 8 - SUPPORT SERVICES...........................................................................................8-1
INTRODUCTION .......................................................................................................... 8-1
REPLACEMENT PARTS AND ORDERING INFORMATION.............................................. 8-1
TRAINING.................................................................................................................... 8-1
TECHNICAL DOCUMENTATION................................................................................... 8-1
APPENDIX A - NTAI05 TERMINATION UNIT CONFIGURATION ............................................A-1
INTRODUCTION ..........................................................................................................A-1
CONFIGURING INPUTS................................................................................................A-1
APPENDIX B - NIAI04 TERMINATION MODULE CONFIGURATION ......................................B-1
INTRODUCTION ..........................................................................................................B-1
CONFIGURING INPUTS................................................................................................B-1
APPENDIX C - NTFB01 TERMINATION UNIT CONFIGURATION...........................................C-1
INTRODUCTION ..........................................................................................................C-1
CONNECTING INPUTS TO THE NTFB01 TERMINATION UNIT ......................................C-1

List of Figures
No. Title Page
WBPEEUI240756A0 v
1-1. INFI 90 OPEN Communication Levels .....................................................................1-2
2-1. Functional Block Diagram......................................................................................2-2
2-2. Analog Input Filter and Overvoltage Protection .......................................................2-4
2-3. FSK Input Circuit...................................................................................................2-5
2-4. Analog to Digital Conversion Circuitry ....................................................................2-6
2-5. FSK Signal and Decoded Digital Equivalent ............................................................2-8
2-6. Field Bus Mode ......................................................................................................2-8
2-7. FSK Analog Point-to-Point Mode ...........................................................................2-10
3-1. IMFEC11/12 Switch and Jumper Locations ...........................................................3-3
4-1. Connecting the Type STT02/03 Terminal to the NTFB01 Termination Unit .............4-2
4-2. IMFEC1  Status LED ............................................................................................4-3
A-1. NTAI05 Input Circuit............................................................................................. A-1
A-2. NTAI05 Cable Connections .................................................................................... A-2
A-3. NTAI05 Terminal Assignments .............................................................................. A-3
B-1. NIAI04 Input Circuit ............................................................................................. B-1
B-2. NIAI04 Terminal Assignments ............................................................................... B-1
B-3. NIAI04 Cable Connections..................................................................................... B-2
C-1. NTFB01 I/O Module Input Circuit ......................................................................... C-1
C-2. NTFB01 Terminal Assignments ............................................................................. C-2
C-3. NTFB01 Cable Connections................................................................................... C-2
List of Tables
No. Title Page
1-1. Glossary of Terms and Abbreviations ......................................................................1-4
1-2. Reference Documents ............................................................................................1-5
1-3. Nomenclature ........................................................................................................1-6
1-4. Related Hardware ..................................................................................................1-6
1-5. Specifications.........................................................................................................1-7
2-1. Firmware Revision Level Requirements...................................................................2-7
3-1. Firmware Revision Level Requirements...................................................................3-2
3-2. Sample Address Switch Settings (S1) ......................................................................3-4
3-3. IMFEC11 Jumper Settings .....................................................................................3-4
3-4. Termination Descriptions .......................................................................................3-5
4-1. IMFEC1  Status LED States ..................................................................................4-3
5-1. IMFEC1  Error Codes ...........................................................................................5-1
5-2. Smart Transmitter Error Codes ..............................................................................5-2
5-3. P1 Edge Connector Pin Assignments ......................................................................5-4
5-4. P2 Edge Connector Pin Assignments ......................................................................5-4
5-5. P3 Input Signal Pin Connections ............................................................................5-4
5-6. J1 Pin Assignments................................................................................................5-4
6-1. Preventive Maintenance Schedule ..........................................................................6-1
A-1. NTAI05 Dipshunt Settings..................................................................................... A-2
B-1. NIAI04 Dipswitch Settings..................................................................................... B-2

vi WBPEEUI240756A0
Safety Summary
®
GENERAL
WARNINGS Equipment Environment
All components, whether in transportation, operation or storage,
must be in a noncorrosive environment.
Electrical Shock Hazard During Maintenance
Disconnect power or take precautions to insure that contact with
energized parts is avoided when servicing.
SPECIFIC
WARNINGS Disconnect power before installing dipshunts on the module mount-
ing unit backplane. Failure to do so will result in contact with cabinet
areas that could cause severe or fatal shock. (p. 3-6)
There are exposed AC and DC connections inside the cabinet.
These exposed electrical connections present a shock hazard that
can cause injury or death. (p. 6-2)
If input or output circuits are a shock hazard after disconnecting sys-
tem power at the power entry panel, then the door of the cabinet
containing these externally powered circuits must be marked with a
warning stating that multiple power sources exist. (p. 6-2)
Never clean electrical parts of components with live power present.
Doing so exposes you to an electrical shock hazard. (p. 6-3)
Wear eye protection whenever working with cleaning solvents.
When removing solvents from printed circuit boards using com-
pressed air, injury to the eyes could result from splashing solvent as
it is removed from the printed circuit board. (p. 6-3)

WBPEEUI240756A0 vii
Trademarks and Registrations
Registrations and trademarks used in this document include:
® INFI 90 Registered trademark of Elsag Bailey Process Automation
® Platinum Standard Trademark of Elsag Bailey Process Automation
® IBM Registered trademark of International Business Machines
Corporation

OVERVIEW
WBPEEUI240756A0 1 - 1
SECTION 1 - INTRODUCTION
OVERVIEW
The IMFEC12 High Level Analog Input (FEC) module inputs 15
channels of analog signals only to the multifunction processor
(MFP) or multifunction controller (MFC) module.
The IMFEC11 High Level Analog Input (FEC) module inputs 15
channels of analog or frequency shift keyed (FSK) digital sig-
nals to the MFP or MFC module. The IMFEC11 module per-
forms all the functions of the IMFEC12 module and also
provides communication with the Bailey-Fischer & Porter line
of FSK digital smart transmitters and other smart devices in a
field bus or point-to-point configuration.
Figure 1-1 shows how the FEC module fits within the INFI 90
OPEN system.
INTENDED USER
Installation and application personnel should have a solid
background in electronic instrumentation and process control.
They should be familiar with proper grounding and safety pro-
cedures for electronic instrumentation. Operators should have
a knowledge of the process and should read and understand
this instruction before placing the module in operation.
HARDWARE DESCRIPTION
The FEC module is an intelligent module, with on-board micro-
processor, memory, analog-to-digital converter and communi-
cation circuitry. The module is a single printed circuit board
that occupies one slot in a module mounting unit (MMU). Two
captive latches on the module faceplate secure it to the module
mounting unit.
The module has three card edge connectors for external signals
(transmitter inputs and communication), system communica-
tion (I/O expander bus) and power. The module receives input
through a cable connection to a termination unit (TU) or termi-
nation module (TM). Wiring from the field devices connect to
terminal blocks on the termination unit or termination mod-
ule. The IMFEC11 circuit board has 18 jumpers; three jumpers
that allow selecting the mode of operation and communication
(J2, J3 and J4) and 15 jumpers that select voltage/current
input (J6 through J20). A dipswitch setting (S1) holds the I/O
expander bus address of the module.

INTRODUCTION
HARDWARE APPLICATION
1 - 2 WBPEEUI240756A0
®
The IMFEC12 circuit board only uses one working setting,
dipswitch S1 that holds the I/O expander bus address of the
module. Jumpers J2 through J4 and J6 through J20 are not
used.
HARDWARE APPLICATION
The FEC module interfaces analog and digital signals from field
devices to the MFP or MFC module. The IMFEC11 module can
interface Bailey-Fischer & Porter FSK smart transmitters and
other smart devices. The IMFEC12 is for use with conventional
transmitters (BC, EQ and PT) and standard analog inputs.
The IMFEC11 module can operate in one of two modes: FSK
field bus mode or FSK analog point-to-point mode. In the FSK
field bus mode, a single two-wire input (bus) links a maximum
of 15 FSK smart transmitters. All inputs (process data and
module to transmitter communication) are in the frequency
shift keyed format and share the field bus. Refer to the
NTFB01 Field Bus Termination Unit instruction for specific
limitations on field bus communications. All field devices must
be Bailey-Fischer & Porter when using this mode.
Figure 1-1. INFI 90 OPEN Communication Levels
TU/TM
IMCIS 2

COMMUNICATION HIGHWAY (INFI-NET OR PLANT LOOP)
CONTROLWAY
MFP
OTHER MODULES
COMMUNICATION
MODULES
T00083B
TU/TM TU/TM TU/TM TU/TMTUTU/TM
OTHER I/O
MODULES
I/O EXPANDER BUS
FIELD BUS
IMDSI

IMDSO

IMFEC1

IMASO 1

IMFEC11 IMASI 3


INTRODUCTION
FEATURES
WBPEEUI240756A0 1 - 3
In the FSK analog point-to-point mode, the IMFEC11 module
can interface up to 15 discrete analog process inputs from FSK
smart devices and communicate (digitally) with those devices.
Additionally, the IMFEC11 module can interface a mixture of
conventional transmitters and other external analog inputs
while operating in this mode. These devices can input only pro-
cess data to the FEC module; they cannot communicate to the
module. In point-to-point operation, each device is individually
wired to the analog input termination unit or module.
FEATURES
The design of the FEC module, as with all INFI 90 OPEN mod-
ules, allows for flexibility in creating a process management
system. The module supports Bailey-Fischer & Porter FSK dig-
ital smart transmitters and other smart devices, conventional
transmitters and standard voltage or current inputs.
The FSK digital capability (IMFEC11) eliminates conversion
errors and increases process control accuracy. Access is
always available to the real time process status. In the field bus
mode, all information (including the process variable) is trans-
mitted digitally between the FEC module and the field devices.
The FEC module stores process data, control commands and
transmitter configuration data in memory. It works to restore
communication with a transmitter if a communication failure
occurs. Upon restoring communication with a failed transmit-
ter, the FEC module checks the transmitter configuration
before the control module (MFP/MFC) resumes updating the
process control.
INSTRUCTION CONTENT
This instruction consists of eight sections and three
appendices.
Introduction Overviews the FEC module. It contains features, a description,
reference documents and specifications.
Description and
Operation Explains the theory of module operation.
Installation Covers handling precautions, switch and jumper settings,
installing and checking the FEC inputs.
Operating Procedures Explains how to start up and operate the FEC module.
Troubleshooting Describes how to monitor transmitter errors from the status
reports. It explains how to check for FEC errors and the correc-
tive action to take.
Maintenance Contains a maintenance schedule for the FEC module.

INTRODUCTION
HOW TO USE THIS INSTRUCTION
1 - 4 WBPEEUI240756A0
®
Repair and Replacement
Procedures Explains how to replace a module needing repair.
Support Services Provides information about ordering parts from your local
Elsag Bailey sales office. It also explains other areas of support
that Elsag Bailey provides.
Appendix A Shows the dipshunt settings, terminal wiring for the NTAI05
analog input termination unit and the required cabling.
Appendix B Shows the dipswitch settings, terminal wiring for the NIAI04
analog input termination module and the required cabling.
Appendix C Shows the jumper settings, terminal wiring for the NTFB01
field bus termination unit and the required cabling.
HOW TO USE THIS INSTRUCTION
Read this instruction before placing the FEC module in opera-
tion. Refer to the sections in this list as needed for more
information.
1. Read Section 4 before placing the FEC module in operation.
2. Do the steps in Section 3.
3. Refer to Section 5 for what to do if a problem occurs.
4. Refer to Section 6 for the scheduled steps needed to main-
tain the FEC module.
5. Refer to Section 7 for how to replace a module.
6. Use Section 8 for parts ordering information. This section
also tells of additional services that Elsag Bailey offers.
GLOSSARY OF TERMS AND ABBREVIATIONS
Table 1-1 contains those terms and abbreviations that are
unique to Elsag Bailey or have a definition that is different
from standard industry usage.
Table 1-1. Glossary of Terms and Abbreviations
Term Definition
Control module Directs field processes through an I/O module; the multifunction processor is an
example.
Field bus A signal line or set of signal lines used by an interface system to which many devices
are connected and over which messages are carried.
Function code An algorithm which manipulates specific functions. These functions are linked
together to form the control strategy.
I/O expander bus Parallel communication bus between the control and I/O modules.

INTRODUCTION
REFERENCE DOCUMENTS
WBPEEUI240756A0 1 - 5
REFERENCE DOCUMENTS
Table 1-2 lists Elsag Bailey instructions referenced in this
instruction.
MFC Multifunction controller module. A multiple loop controller with data acquisition and
information processing capabilities.
MFP multifunction processor module. A multiple loop controller with data acquisition and
information processing capabilities.
MMU Module mounting unit. A card cage that provides electrical and communication
support for INFI 90 OPEN/Network 90 modules.
OIS Operator interface station. Integrated operator console with data acquisition and
reporting capabilities. It provides a digital access into the process for flexible control
and monitoring.
Smart transmitter A field measuring device that uses digital communication to transmit information.
TM Termination module; provides input/output connection between plant equipment and
the INFI 90 OPEN/Network 90 modules.
TU Termination unit; provides input/output connection between plant equipment and the
INFI 90 OPEN/Network 90 modules.
Table 1-1. Glossary of Terms and Abbreviations (continued)
Term Definition
Table 1-2. Reference Documents
Number Title
I-E21-56 SmartLink Transmitter Management Software
I-E92-501-2 Configuration and Tuning Terminal, Type CTT02
I-E96-192-1 Operation manual, Operator Interface Station (40 Series)
IIOIS42
I-E96-200 Function Code Application Manual
I-E96-201 IMMFP01 Multifunction Processor
I-E96-202 IMMFP02 Multifunction Processor
I-E96-203 IMMFP03/03B Multifunction Processor
I-E96-211 IMMFC03 Multifunction Controller
I-E96-212 IMMFC04 Multifunction Controller
I-E96-213 IMMFC05 Multifunction Controller
I-E96-416 NTAI05 Analog Input Termination Unit
I-E96-432 NTFB01 Field Bus Termination Unit
I-E96-436 NIAI04 Analog Input Termination Module
P-E21-001 Installing a 4 to 20 mA Transmitter in a Hazardous Location
WBPEEUI110501A0 Smart Transmitter Terminal, Type STT03
WBPEEUI200501A0 Module Mounting Unit (IEMMU11/12/21/22)
WBPEEUI220756A0 Operation manual, Operator Interface Station (40 Series)
IIOIS43

INTRODUCTION
NOMENCLATURE
1 - 6 WBPEEUI240756A0
®
NOMENCLATURE
Table 1-3 contains the analog input module nomenclature
used in this instruction.
RELATED HARDWARE AND SOFTWARE
Table 1-4 contains the related hardware and software pack-
ages that can be used with an IMFEC1  module.
Table 1-3. Nomenclature
Nomenclature Description
IMFEC11 Analog input module with FSK communications for
smart transmitter interface and standard analog
inputs
IMFEC12 Analog input module for use with conventional trans-
mitters and standard analog inputs
Table 1-4. Related Hardware
Nomenclature Hardware
AVS Electro-pneumatic smart positioner
BC, BCN Conventional and smart pressure transmitters
EQ, EQN Conventional and smart temperature transmitters
EQS Platinum Standard™ smart temperature transmitters
MFC Multifunction controller module
MFP Multifunction processor module
NIAI04 Analog input termination module
NTAI05 Analog inputs termination unit
NKTM01, NKTU02 Analog input termination module cable
NKTU01 Analog inputs/field bus termination unit cable
NTFB01 Field bus termination unit
PT Platinum Standard conventional pressure transmitter
PTS Platinum Standard smart pressure transmitters
SLNK011A0 SmartLink transmitter management software
SM, XM, XE Smart magnetic flowmeter
STT02/03 Smart transmitter terminal
TBN Smart pH transmitters

INTRODUCTION
SPECIFICATIONS
WBPEEUI240756A0 1 - 7
SPECIFICATIONS
Table 1-5 contains the specifications for the IMFEC module.
Table 1-5. Specifications
Property Characteristic/Value
Power requirements
Operating power 5 VDC, ±5% at 85 mA typical
+15 VDC, ±5% at 25 mA typical
-15 VDC, ±5% at 20 mA typical
Power dissipation 1.1 W typical
Overvoltage category I for power per ANSI/ISA S82.01-1994
Operating
Analog inputs 15 independently configured channels
Analog input ranges 4 to 20 mA, 1 to 5 VDC, 0 to 1 VDC,
0 to 5 VDC, 0 to 10 VDC, -10 to +10 VDC
Analog updates A/D conversions 5 times/sec
FSK digital updates (IMFEC11
only) 3 to 10 times/sec (in field bus configuration)
A/D resolution 14 bits with polarity
Analog accuracy
4 to 20 mA
1 to 5 VDC
0 to 5 VDC
0 to 10 VDC
-10 to +10 VDC
0 to 1 VDC
0.1%
0.1%
0.1%
0.1%
0.1%
0.25%
FSK digital accuracy (IMFEC11
only) Same as transmitter accuracy for each input
Common mode voltage -12 VDC minimum, +15 VDC maximum
±12 VDC (±1 VDC) input span
±10 VDC (±5 VDC) input span
±5 VDC (±10 VDC) input span
Common mode rejection 90 dB minimum at 50/60 Hz
Normal mode rejection 70 dB minimum at 50/60 Hz
Input impedance Greater than 1 MΩ(each channel)
Overvoltage category III for inputs per ANSI/ISA S82.01-1994

INTRODUCTION
SPECIFICATIONS
1 - 8 WBPEEUI240756A0
®
Electromagnetic Compatibility
Conducted transients
Communication baud rate 9600 baud
Environmental
Ambient temperature 0° to 55°C (0° to 131°F) (noncondensing)
Relative humidity 5% to 95% up to 55°C (131°F)
5% to 45% at 70°C (158°F) (noncondensing)
Atmospheric pressure Sea level to 3 km (1.86 mi)
Air quality Noncorrosive
Mounting Occupies a single slot in a standard INFI 90 OPEN module mounting
unit (MMU)
CE mark
EMC96 Directive 89/336/EEC
Low Voltage Directive 73/23
/EEC
This product, when installed in an INFI 90 OPEN cabinet, complies with
the following Directives/Standards for CE marking.
EN50082-2 Generic Immunity Standard - Part 2: Industrial Environment
EN50081-2 Generic Emission Standard - Part 2: Industrial Environment
EN61010-1 Safety Requirements for Electrical Equipment for Measure-
ment, Control and Laboratory Use - Part 1: General Requirements
Certification
CanadianStandardsAssociation
(CSA)
Factory Mutual (FM) (pending)
Certified for use as process control equipment in an ordinary
(nonhazardous) location
Approval for the following categories, nonincendive for:
Class I Division 2, Groups A,B,C,D
Class II, Division 2, Groups F,G
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
Table 1-5. Specifications (continued)
Property Characteristic/Value
Test Common Mode Normal
Mode
Pulse voltage test (1.2/50 µS)
(IEC 801-5) 2 kVp 1 kVp
Line frequency wave (50 Hz) 50 Vp N/A
Low voltage wave train
(Sweep from 10 KHz to 1 MHz) 50 Vp N/A
Damped 1 MHz oscillatory wave
(IEC 1000-4-12) 1 kVp 0.5 kVp
Electrical fast transient/burst
(IEC 801-4) 1 kVp N/A
Conducted RF interferences
(IEC 801-6 level 3) 10 V RMS N/A
Keep cabinet doors closed. Do not use communication equipment closer than 2 m
(6 ft.) from the cabinet.

INTRODUCTION
WBPEEUI240756A0 2 - 1
SECTION 2 - DESCRIPTION AND OPERATION
INTRODUCTION
This section explains the operation of the IMFEC1  Analog
Input Module (FEC). The module does two major tasks. It pro-
vides an interface by which the controlling module (multifunc-
tion processor or multifunction controller module (MFP/MFC))
can input analog process data from external devices or smart
transmitters. It also serves as a communication link between
the INFI 90 OPEN control system and field devices.
The IMFEC12 module accepts inputs from conventional trans-
mitters (BC, EQ and PT) and standard analog inputs of 4 to 20
milliamps, 1 to 5 VDC, 0 to 1 VDC, 0 to 5 VDC, 0 to 10 VDC
and -10 to +10 VDC. The IMFEC11 has all the functionality of
the IMFEC12 module but also provides FSK communications
for interface to Bailey-Fischer & Porter smart transmitters and
other smart devices.
GENERAL OPERATION
Upon receiving initialization from the controlling module
(MFP/MFC), the FEC module stores that information in mem-
ory and checks the configuration of each input channel. If all
input channels check good, operation begins. If the FEC mod-
ule detects a configuration error, that error appears in the
module status report.
Under normal operation, the controlling module sends trans-
mitter commands and requests process input data and status
information from the FEC module. The FEC module continu-
ously reads each input channel, does the necessary conver-
sions and stores the data in memory. When the controlling
module makes a request for data, the FEC module sends it the
most current information that it has in memory.
If a communication failure with one of the transmitters occurs,
the FEC module works to restore communication while con-
tinuing normal operation. It checks the transmitter configura-
tion upon restoring transmitter communication and normal
process control continues.
MFP/MFC MODULE OPERATION
The controlling module (MFP/MFC) directs the operation of the
transmitters and holds their operating strategy. Function code
132 (analog input/slave) reads the analog inputs of the FEC
module. The configuration of function code 133 (smart trans-
mitter definition, for IMFEC11 only) in the controlling module

DESCRIPTION AND OPERATION
FUNCTIONAL OPERATION
2 - 2 WBPEEUI240756A0
®
determines the operating strategy of each smart transmitter.
Operation begins when the controlling module is placed in the
execute mode with function code 132, and optionally with
function code 133, in its configuration. When the controlling
module enters the execute mode, it downloads the operating
strategy to the FEC module.
FUNCTIONAL OPERATION
The FEC module can be divided into four functional blocks for
the IMFEC12 and five functional blocks for the IMFEC11.
Figure 2-1 shows a block diagram of the IMFEC1  Analog
Input (FEC) module. The functional blocks are:
•Module inputs/outputs (AC coupler and FSK multiplexer
for the IMFEC11 only).
•Communication circuitry (IMFEC11 only).
•Microprocessor and control logic.
•Analog-to-digital converter.
•I/O expander bus interface.
The following sections explain the operation of the functional
blocks that make up the IMFEC1  circuitry.
Figure 2-1. Functional Block Diagram
T00915A
ADC
CONTROL DUAL SLOPE ADC ANALOG
MULTIPLEXER CURRENT/
VOLTAGE
CONVERTER
FSK
MULTIPLEXER
FSX TXD/RXD
I/O EXPANDER BUS
MICROPROCESSOR
DATA/STATUS
BUFFERS
MEMORY
I/O FIFO
TRANSMITTER
INPUTS
ANALOG
INPUT
FILTERS
TRANSMIT
RECEIVE
GATING
FSK
COMMUNICATION
I/O
EXPANDER
BUS IC
AC COUPLER
ANALOG-TO-DIGITAL
CONVERSION
IMFEC11 FSK
COMMUNICATION
MICROPROCESSOR
AND
CONTROL LOGIC
MODULE I/O

DESCRIPTION AND OPERATION
FUNCTIONAL OPERATION
WBPEEUI240756A0 2 - 3
Microprocessor and Control Logic Circuitry
The on-board microprocessor and control logic coordinates
module functions. The microprocessor has four main
functions:
•Storing the digital data in random access memory (RAM).
•Coordinating analog-to-digital conversion through the ana-
log-to-digital control chip.
•Preparing digital commands to send to the smart
transmitters (IMFEC11 only).
•Reading and sending data to the controlling module (MFP/
MFC).
The microprocessor directly links to eight kilobytes of random
access memory. This memory serves as a storage area for pro-
cess data and transmitter configuration information.
The microprocessor coordinates analog-to-digital conversions
through ADC circuitry. The microprocessor takes the con-
verted process data it receives from the ADC circuitry and
places it into a memory buffer. It remains in memory until the
controlling module makes a request for process data or the
microprocessor updates it with a new value. When the micro-
processor receives a request for process data, it transfers that
data from the memory buffer to a first in first out (FIFO) shift
register where the controlling module can access it through the
I/O expander bus interface.
For IMFEC11 modules (FSK communications), the micropro-
cessor sends command signals to the transmitters through the
module communication circuitry. The circuitry converts com-
mands from the microprocessor into FSK signals. The micro-
processor directs the command transmission to the proper
channel.
The MFP module communicates with the FEC module over the
I/O expander bus. An Elsag Bailey designed integrated circuit
interfaces the microprocessor to the I/O expander bus. All
MFP commands and process data pass through the I/O
expander bus interface and first in first out inputs or outputs.
Module Input/Output Circuitry
Process inputs to the IMFEC11/12 modules can be standard
analog signals of four to 20 milliamps and ±10 VDC; or analog
(point-to-point) or frequency shift keyed digital signals (on a
field bus) (IMFEC11). The module input circuit provides two
paths for process data inputs. One path handles standard ana-
log inputs and analog point-to-point inputs. The other path