Table of Contents
1771 Analog Input and Output Modules . . . . . . . . . . . . . . .
Interfaces your analog devices to AllenBradley programmable
controllers within the 1771 Universal I/O structure. . . . . . . . . . .
Analog Module Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview of the 1771 Analog I/O Modules . . . . . . . . . . . . . . . . . .
1771 Analog I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Placement Guidelines . . . . . . . . . . . . . . . . . . . . . . . . .
Addressing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Resolution NSeries Analog Modules . . . . . . . . . . . . . . . . . .
Conformal Coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compliance to European Union Directives . . . . . . . . . . . . . . . . . .
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Agency Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Look . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential,
or 16 singleended inputs . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential,
or 16 singleended inputs . . . . . . . . . . . . . . . . . . . . . . . . . . .
Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engineering and Field Services . . . . . . . . . . . . . . . . . . . . . . . .
Technical Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair and Exchange Services . . . . . . . . . . . . . . . . . . . . . . . .
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
8
7
27
27
27
27
27
1771 Analog Input and Output Modules
Product Data
Photo/Slide #
Interfaces your analog devices to AllenBradley programmable
controllers within the 1771 Universal I/O structure.
Allen–Bradley analog I/O modules interface to analog devices such
as speed sensors, temperature and pressure sensors, tire and printing
presses, and flow meters. The modules are compatible with all
current Allen-Bradley programmable controllers.
Allen-Bradley analog modules perform the required A/D and D/A
conversions to directly interface analog signals to programmable
controller data table values using up to 16-bit resolution.
Analog I/O can be user-configured for the desired fault-response
state in the event that I/O communication is disrupted. This feature
provides a safe reaction/response in case of a fault, limits the extent
of the fault and provides a predictable fault response.
Publication 17712.183 - May 1996
2
1771 Analog Input and Output Modules
Overview
Analog Module Features
Analog I/O modules feature:
• a wide range of signal levels including standard analog inputs and
•
•
•
•
•
•
•
•
Overview of the 1771
Analog I/O Modules
outputs, and direct thermocouple and RTD temperature inputs
software selectable features including digital filtering for noisy
transmitters and environments, and range selections per I/O point
for added flexibility
comprehensive self-diagnostic test: over/underrange, high/low
rate-of-change alarming, open input/open loop detection, on
board error checking
scaling to engineering units makes incoming signals easy to work
with
I/O chassis-supplied power eliminates the cost of external power
supplies
inputs isolated from power source noise
isolation between individual output circuits
user-configurable output response (min, mid, max range or last
value) for safe reaction to a module fault
a status block provides information to the processor for alarming
and troubleshooting
Allen-Bradley offers a full line of analog modules to accommodate
your specific needs. The varied selection of the analog I/O family
allows you the flexibility to purchase modules with the features and
performance capabilities that you need. Refer to the table below for
a list of analog I/O family modules.
1771 Analog I/O Modules
Catalog Number
1771IFE
1771IFF
1771IFMS
1771IL
1771IR
1771IXE
1771IXHR
1771OFE1
1771OFE2
1771OFE3
Series
Module Type
C
A
A
C
C
C
B
B
B
B
Analog Input
Fast Analog Input
Fast Millivolt Input
Isolated Analog Input
Resistance Temperature Detector Input
Thermocouple Millivolt Input
High Resolution Thermocouple /Millivolt Input
Analog Output (voltage)
Analog Output (4 to 20mA)
Analog Output (0 to 50mA)
High Resolution Analog Modules are also
available. Refer to publication 17712.193
1771N series
System Compatibility
Refer to the individual specification sheets included in this document
for compatibility and use of each module.
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
3
Overview
Status Indicators
RUN
FLT
The front panel of each analog I/O module contains status indicators.
Refer to the individual specification sheets included in this document
for each module’s status indicators and meanings.
Keying
Plastic keying bands shipped with each I/O chassis let you key your
I/O slots to accept only one type of module. You can key any
backplane connector in an I/O chassis to receive your module except
for the leftmost connector, which is reserved for adapter or processor
modules.
Power Supply Requirements
The analog modules do not require any external power. Power is
supplied through the 1771 I/O chassis backplane from the associated
chassis power supply. Refer to the table below for individual module
power requirements.
Catalog Number
1771IFE/C
1771IFF/A
1771IFMS/A
1771IL/C
1771IR/C
1771IXE/C
1771IXHR/B
1771OFE1/B
1771OFE2/B
1771OFE3/B
Module Type
Current
Requirement
Analog Input
Fast Analog Input
Intrinsically Safe Fast Millivolt Input
Isolated Analog Input
Resistance Temperature Detector Input
Thermocouple Millivolt Input
High Resolution Thermocouple /Millivolt Input
Analog Output (voltage)
Analog Output (4 to 20mA)
Analog Output (0 to 50mA)
500mA
500mA
750mA
1.0mA
850mA
750mA
750mA
1.5A
1.5A
2.5A
Total the current requirements for all the modules in the chassis to
avoid overloading the power supply or the I/O chassis backplane.
Module Placement Guidelines
Group your modules to minimize adverse effects from radiated
electrical noise and/or heat.
• Group analog I/O modules away from other modules in the
chassis to minimize electrical noise interference.
• Place analog input modules and other I/O modules that are
sensitive to heat away from slot power supplies to minimize
adverse heat effects.
Publication 17712.183 - May 1996
4
1771 Analog Input and Output Modules
Overview
Addressing Modes
Your Allen-Bradley processor can address its I/O in 2-slot, 1-slot or
1/2-slot I/O groups. You select the addressing method for the chassis
in which a processor or I/O adapter resides with the I/O chassis
backplane switch assembly. You make the selection for each chassis
independently, choosing one method of addressing for each chassis.
Analog Input Modules
The 1771 analog input modules are intelligent modules that use
block transfer programming to interface analog inputs with
Allen-Bradley programmable controllers. Typical analog
applications include:
• temperature and pressure sensing
• level sensing
• flow metering
Allen-Bradley analog input modules are available with a wide range
of input terminals per module.
Catalog Number
Module Type
1771IFE/C
1771IFF/A
1771IFMS
1771IL/C
1771IR/C
1771IXE/C
Analog Input
Fast Analog Input
Intrinsically Safe Fast Millivolt Input
Isolated Analog Input
RTD Input
Thermocouple Millivolt Input
1771IXHR/B
High Resolution Thermocouple/Millivolt Input
Number of
Inputs
Type of Inputs
16/8
16/8
8
8
6
8
16 singleended/8 differential
16 singleended/8 differential
differential low level
fully isolated differential
RTD, fully isolated differential
thermocouple/mV, fully isolated
differential
high resolution thermocouple/mV,
fully isolated differential
8
Input Filtering
Input filtering limits the effect of voltage transients caused by
contact bounce and/or electrical noise. If not filtered, voltage
transients could produce false data.
Backplane circuits, module logic circuits, and the rest of the system
are protected from possible damage due to electrical transients by
opto-electrical isolation.
Analog Output Modules
The1771 analog output modules are intelligent block transfer
modules that convert binary or four-digit BCD values (from your
processor) to analog signals at module outputs. The modules use
block transfer programming to accomplish data transfer. Typical
output devices include:
• motor speed controllers
• signal amplifiers
• valve positioners
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
5
Overview
Output modules include:
Catalog Number
1771OFE1/B
1771OFE2/B
1771OFE3/B
High Resolution NSeries
Analog Modules
Module Type
Analog Output
Analog Output
Analog Output
Number of
Outputs
4
4
4
Type of Outputs
individually isolated voltage
individually isolated 4-20mA current
individually isolated 0-50mA current
1771-N series high resolution analog modules come in a variety of
combinations of inputs and outputs. Input/output connections to the
N-series modules are made to remote termination panels, tailored to
the type of module. The remote termination panels are then
cable-connected to the actual module.
In addition, 1771-N series modules can be custom-ordered with input
and output combinations not normally offered. Consult your local
Allen-Bradley district office for more information.
1771-N series modules are not covered in this publication. Refer to
publication 1771-2.193, “High Resolution Isolated Analog Modules
Product Data” for detailed information on the N-series modules.
Conformal Coating
Many products are available conformally coated. Conformal coatings
are polymeric films which cover or encapsulate printed circuit
assemblies. They protect the assembly by sealing out contaminants
and humidity.
The catalog number of a conformally coated product will include the
designation “K” in the last position before the series identifier. For
example, a 1771-IFE C module with conformal coating would have a
catalog number of 1771-IFEK C.
All analog modules, except for the 1771-IXHR and 1771-IFMS
modules, are available conformally coated.
Compliance to
European Union Directives
If this product has the CE mark it is approved for installation within
the European Union and EEA regions. It has been designed and
tested to meet the following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and the following standards,
in whole or in part, documented in a technical construction file:
• EN 50081-2EMC – Generic Emission Standard, Part 2 –
Industrial Environment
• EN 50082-2EMC – Generic Immunity Standard, Part 2 –
Industrial Environment
This product is intended for use in an industrial environment.
Publication 17712.183 - May 1996
6
1771 Analog Input and Output Modules
Overview
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC
Low Voltage, by applying the safety requirements of EN 61131–2
Programmable Controllers, Part 2 – Equipment Requirements and
Tests.
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
• Industrial Automation Wiring and Grounding Guidelines For
Noise Immunity, publication 1770-4.1
• Guidelines for Handling Lithium Batteries, publication AG-5.4
• Automation Systems Catalog, publication B111
Agency Certification
Individual discrete I/O modules can also comply with various other
agency requirements when product or packaging is so marked.
Agency Certification
• CSA certified
(when product or packaging is • CSA Class I, Division 2, Groups A, B, C, D certified
marked)
• UL listed
• CE marked for all applicable directives
Where to Look
The following table shows you where to go in this publication for the
specifications, wiring, and application information specific to each
analog input and output module.
Catalog
Number
Publication 17712.183 - May 1996
Module Type
1771IFE/C
1771IFF/A
1771IFMS/A
1771IL/C
1771IR/C
1771IXE/C
1771IXHR/B
1771OFE1/B
1771OFE2/B
1771OFE3/B
Analog Input
Fast Analog Input
Intrinsically Safe Fast Millivolt Input
Isolated Analog Input
RTD Input
Thermocouple/Millivolt Input
High Resolution Thermocouple/Millivolt Input
Analog Output
Analog Output
Analog Output
1771N series
High Resolution Analog Modules
For specifications,
refer to:
page 7
page 11
page 15
page 17
page 19
page 21
page 23
ppage
g 25
Refer to publication
17712.193
1771 Analog Input and Output Modules
7
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential, or 16 singleended inputs
Simplified Schematic
Analog Switch
200KΩ
Multi
plexer
System
Circuitry
Opto
isolation
Opto
isolation
A/D
Converter
_
+
470pF
VINVIN+
Multi
plexer
200KΩ
470pF
Channel
1 (+)
250Ω
Channel
1 (-)
Control
1 of 8 differential channels
Channel 1 shown
Analog Switch
200KΩ
Multi
plexer
System
Circuitry
Opto
isolation
A/D
Converter
Opto
isolation
Control
_
+
Ch 3
Ch 5
Ch 7
470pF
VINVIN+
Multi
plexer
1 of 16 singleended channels
Application Notes
Product Compatibility - The module is compatible with 1771A1B
through -A4B or later I/O chassis only. Insert the module in any slot in
the chassis except the leftmost slot, which is reserved for processors
or adapter modules.
Status Indicators - The front panel of the input module contains a
green RUN and a red FAULT indicator. At powerup an initial module
selfcheck occurs. If there is no fault, the red indicator turns off. The
green indicator will blink until the processor completes a successful
write block transfer to the module.
The green indicator remains on while the module is powered. Any time
a fault occurs, the red FAULT indicator lights up.
Wiring - Wiring to the analog input module is connected to
the 1771WG field wiring arm. The wiring arm pivots upward
and connects with the module so that you can install or
remove it without disconnecting the wires. Recommended
maximum cable length for voltage input devices is 50 feet.
Channel
1
250Ω
Ch 2
Ch 4
Ch 6
Ch 8
Channel 1 shown
Configurable Features 16 singleended or 8 differential inputs
userprogrammable selectable input ranges
selectable realtime sampling
selectable digital filtering
selectable data format
selectable scaling to engineering units
•
•
•
•
•
•
Note: Configuring the module for differential inputs does not
provide channeltochannel isolation. To prevent common
mode voltage problems, we recommend the use of common
power supplies and careful wiring and grounding practices
(refer to publication 17704.1, Industrial Automation Wiring
and Grounding Guidelines for Noise Immunity"). If isolation
is required, signal conditioners must be added.
Publication 17712.183 - May 1996
8
1771 Analog Input and Output Modules
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential, or 16 singleended inputs
Connection Diagram - 8 Differential Inputs and 2wire Transmitter
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Channel 1+
1
2
Channel 1
Channel 2+
Note:
1. Unused channels must have their
+ and inputs jumpered together
and tied to module common to
reduce noise.
+
2Wire
Transmitter
Power
Supply
4
Common
-
5
Channel 3+
6
Channel 3
2Wire
Transmitter
2. Tie power supply grounds together
to minimize ground loops.
3
Channel 2
Power
Supply
+
Channel 4+
_
Channel 4
7
8
9
Common
10
Channel 5+
11
Channel 5
12
Channel 6+
Attention: Analog input signals must be within +14.25V referenced to module
common. If an input channel exceeds this range, channeltochannel crosstalk
can cause invalid input readings and invalid underrange or overrange bits.
The 1771IFE module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
13
Channel 6
Source Ground
14
Common
15
Channel 7+
16
Channel 7
17
Channel 8+
18
Channel 8
19
Module Common
Configuring the module for differential inputs does not provide isolation.
20
Module Common
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
21
1771WG
Field Wiring Arm
Connection Diagram - 8 Differential Inputs and 4wire Transmitter
Channel 1+
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Power
Supply
Channel 1
Channel 2+
4Wire
Transmitter
Channel 2
+
Common
-
Channel 3+
Note:
Channel 3
1. Unused channels must have
their + and inputs jumpered
together and tied to module
common to reduce noise.
Power
Supply
4Wire
Transmitter
Channel 4+
+
Channel 4
-
2. Tie power supply grounds together
to minimize ground loops.
Common
Channel 5+
Channel 5
Channel 6+
Source Ground
Attention: Analog input signals must be within +14.25V referenced to module common. If
an input channel exceeds this range, channeltochannel crosstalk can cause invalid input
readings and invalid underrange or overrange bits.
The 1771IFE module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
Configuring the module for differential inputs does not provide isolation.
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
Publication 17712.183 - May 1996
Channel 6
Common
Channel 7+
Channel 7
Channel 8+
Channel 8
Module Common
Module Common
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1771WG
Field Wiring Arm
1771 Analog Input and Output Modules
9
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential, or 16 singleended inputs
Connection Diagram - 16 Singleended Inputs and 2wire Transmitter
Channel 1
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Channel 3
Note:
Power
Supply
4
Module Common
-
5
Channel 5
6
Channel 6
2Wire
Transmitter
2. Jumper all unused channels to
module common to reduce noise.
3. Tie power supply grounds together
to minimize ground loops.
3
Channel 4
+
2Wire
Transmitter
1. All commons are electrically tied
together inside the module.
1
2
Channel 2
Power
Supply
+
Channel 7
_
Channel 8
7
8
Module Common
Channel 9
11
Channel 10
12
Channel 11
Attention: Analog input signals must be within +14.25V referenced to module common.
This input signal includes any common mode voltage present between either input terminal
and module common. If an input terminal exceeds this range, channeltochannel crosstalk
can cause invalid input readings and invalid underrange or overrange bits.
Source Ground
13
Channel 12
14
Module Common
15
Channel 13
16
Channel 14
17
Channel 15
18
Channel 16
Module Common
The 1771IFE module does not supply loop power for the input device. The user
must supply loop power for looppowered input devices.
9
10
Module Common
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
19
20
21
1771WG
Field Wiring Arm
Connection Diagram - 16 Singleended Inputs and 4wire Transmitter
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Note:
1. All commons are electrically tied
together inside the module.
2. Jumper all unused channels to
module common to reduce noise.
3. Tie power supply grounds together
to minimize ground loops.
Channel 1
Channel 2
Channel 3
Power
Supply
4Wire
Transmitter
+
Channel 4
Module Common
-
Channel 5
Channel 6
Power
Supply
4Wire
Transmitter
+
Channel 7
Channel 8
-
Module Common
Channel 9
Channel 10
Channel 11
Source Ground
Attention: Analog input signals must be within +14.25V referenced to module common.
This input signal includes any common mode voltage present between either input terminal
and module common. If an input terminal exceeds this range, channeltochannel crosstalk
can cause invalid input readings and invalid underrange or overrange bits.
The 1771IFE module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
Channel 12
Module Common
Channel 13
Channel 14
Channel 15
Channel 16
Module Common
Module Common
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1771WG
Field Wiring Arm
Publication 17712.183 - May 1996
10
1771 Analog Input and Output Modules
Analog Input Module (Cat. No. 1771IFE Series C) 8 differential, or 16 singleended inputs
Specifications (Cat. No. 1771IFE/C)
Specifications (Cat. No. 1771IFE/C)
Inputs per module
16 singleended; 8 differential low level
Module location
1771 I/O chassis - 1 slot
Nominal input voltage
+1 to +5V dc
0 to 5V dc
5 to + 5V dc
10 to +10V dc
0 to 10V dc
Environmental conditions:
Operational temperature
Storage temperature
Relative humidity
Operating
Storage
Nominal input current
Resolution
+4 to +20mA
0 to +20mA
20 to +20mA
12bit binary,
12 bits plus sign in bipolar ranges
Conductors
Category
14 gauge (2mm2) stranded maximum
3/64 inch (1.2mm) insulation maximum
23
Between 10 and 12
Between 24 and 26
Field wiring arm
Catalog number 1771WG
Wiring arm screw torque
79 inchpounds
Publications
User manual
Installation Instructions
Publication 17716.5.115
Publication 17715.45
0.1% of full scale range @ 25oC
Linearity
+1LSB
Repeatability
+1LSB
Isolation voltage
Isolation meets or exceeds UL Standard
508, and CSA Standard C22.2 No. 142.
Input overvoltage protection
(current ranges)
200V (voltage mode)1
8V (current mode)2
Common mode voltage
+14.25 Volts
Input impedance
>10 megohms for voltage ranges;
250 ohms for current ranges
Common mode rejection
80 db, dc120Hz
2
Backplane current
500mA @ +5V
3
Power dissipation
2.5 Watts (maximum)
Thermal dissipation
8.52 BTU/hr (maximum)
Unscaled BCD and binary output
to processor
0000 to +409510 for polar ranges
(0 to 5V, +1 to +5V, 0 to +20mA, and +4 to
20mA)
409510 to 409510 for bipolar ranges (+5V,
+10V, +20mA)
Internal scan rate
5 to 95% (noncondensing)
5 to 90% (noncondensing)
Keying
Accuracy
Engineering units sent to
processor
Wire size
0o to 60oC (32o to 140oF)
-40o to 85oC (-40o to 185oF)
Agency Certification
(when product or packaging is
marked)
1
• CSA certified
• CSA Class I, Division 2, Groups A, B,
C, D certified
• UL listed
• CE marked for all applicable directives
The inputs are protected to 200V. However, if an input terminal's voltage exceeds
+14.25 as referenced to module common,
channeltochannel crosstalk can cause invalid input readings and nvalid
underrange/overrange bits.
Only 8 volts can be placed directly across the input when configured in the current
mode.
Refer to publication 17704.1, Industrial Automation Wiring and Grounding
Guidelines."
Status Indicators
+9999 with selectable scaling
13.7ms for 8 differential inputs (no digital
filtering) add 0.3ms for filtering
27.4ms for 16 singleended input (no
digital filtering) add 0.3ms for filtering
ANALOG
IN
(12 BIT)
RUN
Green Run indicator
FAULT
Red Fault indicator
10528I
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
11
Analog Input Module (Cat. No. 1771IFF Series A) 8 differential, or 16 differential inputs
Simplified Schematic
Analog Switch
200KΩ
Multi
plexer
System
Circuitry
Opto
isolation
Opto
isolation
A/D
Converter
_
+
470pF
VINVIN+
Multi
plexer
200KΩ
470pF
Channel
1 (+)
250Ω
Channel
1 (-)
Control
1 of 8 differential channels
Channel 1 shown
Analog Switch
200KΩ
Multi
plexer
System
Circuitry
Opto
isolation
A/D
Converter
Opto
isolation
Control
_
+
Ch 3
Ch 5
Ch 7
470pF
VINVIN+
Multi
plexer
1 of 16 singleended channels
Application Notes
Product Compatibility - The module is compatible with 1771A1B
through -A4B or later I/O chassis only. Insert the module in any slot in
the chassis except the leftmost slot, which is reserved for processors
or adapter modules.
Status Indicators - The front panel of the input module contains a
green RUN and a red FAULT indicator. At powerup an initial module
selfcheck occurs. If there is no fault, the red indicator turns off. The
green indicator will blink until the processor completes a successful
write block transfer to the module.
The green indicator remains on while the module is powered. Any time
a fault occurs, the red FAULT indicator lights up.
Wiring - Wiring to the analog input module is connected to
the 1771WG field wiring arm. The wiring arm pivots upward
and connects with the module so that you can install or
remove it without disconnecting the wires. Recommended
maximum cable length for voltage input devices is 50 feet.
Channel
1
250Ω
Ch 2
Ch 4
Ch 6
Ch 8
Channel 1 shown
Configurable Features 16 singleended or 8 differential inputs
userprogrammable selectable input ranges
selectable realtime sampling
selectable digital filtering
selectable data format
selectable scaling to engineering units
•
•
•
•
•
•
Note: Configuring the module for differential inputs does not
provide channeltochannel isolation. To prevent common
mode voltage problems, we recommend the use of common
power supplies and careful wiring and grounding practices
(refer to publication 17704.1, Industrial Automation Wiring
and Grounding Guidelines for Noise Immunity"). If isolation
is required, signal conditioners must be added.
Publication 17712.183 - May 1996
12
1771 Analog Input and Output Modules
Analog Input Module (Cat. No. 1771IFF Series A) 8 differential, or 16 differential inputs
Connection Diagram - 8 Differential Inputs and 2wire Transmitter
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Channel 1+
1
2
Channel 1
Channel 2+
+
2Wire
Transmitter
Note:
1. Unused channels must have their
+ and inputs jumpered together
and tied to module common to
reduce noise.
Power
Supply
4
Common
-
5
Channel 3+
6
Channel 3
2Wire
Transmitter
Power
Supply
2. Tie power supply grounds together
to minimize ground loops.
3
Channel 2
+
Channel 4+
_
Channel 4
7
8
9
Common
10
Channel 5+
11
Channel 5
12
Channel 6+
13
Channel 6
Source Ground
14
Common
15
Channel 7+
16
Channel 7
The 1771IFF module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
17
Channel 8+
18
Channel 8
19
Module Common
Configuring the module for differential inputs does not provide isolation.
20
Module Common
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
21
1771WG
Field Wiring Arm
Connection Diagram - 8 Differential Inputs and 4wire Transmitter
Channel 1+
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Power
Supply
Note:
1. Unused channels must have their
+ and inputs jumpered together
and tied to module common to
reduce noise.
Channel 1
Channel 2+
4Wire
Transmitter
Channel 2
+
Common
-
Channel 3+
Channel 3
Power
Supply
4Wire
Transmitter
Channel 4+
+
Channel 4
-
Common
Channel 5+
Channel 5
2. Tie power supply grounds together
to minimize ground loops.
Channel 6+
Source Ground
Channel 6
Common
Channel 7+
Channel 7
Channel 8+
The 1771IFF module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
Configuring the module for differential inputs does not provide isolation.
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
Publication 17712.183 - May 1996
Channel 8
Module Common
Module Common
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1771WG
Field Wiring Arm
1771 Analog Input and Output Modules
13
Analog Input Module (Cat. No. 1771IFF Series A) 8 differential, or 16 differential inputs
Connection Diagram - 16 Singleended Inputs and 2wire Transmitter
Channel 1
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Channel 3
Power
Supply
Note:
4
Module Common
-
5
Channel 5
6
Channel 6
2Wire
Transmitter
Power
Supply
2. Jumper all unused channels to
module common to reduce noise.
3. Tie power supply grounds together
to minimize ground loops.
3
Channel 4
+
2Wire
Transmitter
1. All commons are electrically tied
together inside the module.
1
2
Channel 2
+
Channel 7
_
Channel 8
7
8
Module Common
Channel 9
11
Channel 10
12
Channel 11
Source Ground
13
Channel 12
14
Module Common
15
Channel 13
16
Channel 14
17
Channel 15
18
Channel 16
Module Common
The 1771IFE module does not supply loop power for the input device. The user
must supply loop power for looppowered input devices.
9
10
Module Common
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
19
20
21
1771WG
Field Wiring Arm
Connection Diagram - 16 Singleended Inputs and 4wire Transmitter
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Channel 1
Channel 2
Channel 3
Power
Supply
Note:
4Wire
Transmitter
1. All commons are electrically tied
together inside the module.
2. Jumper all unused channels to
module common to reduce noise.
3. Tie power supply grounds together
to minimize ground loops.
+
Channel 4
Module Common
-
Channel 5
Channel 6
Power
Supply
4Wire
Transmitter
+
Channel 7
Channel 8
-
Module Common
Channel 9
Channel 10
Channel 11
Source Ground
Channel 12
Module Common
Channel 13
Channel 14
Channel 15
Channel 16
Module Common
The 1771IFE module does not supply loop power for the input device. The user must
supply loop power for looppowered input devices.
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771 I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
Module Common
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
1771WG
Field Wiring Arm
Publication 17712.183 - May 1996
14
1771 Analog Input and Output Modules
Analog Input Module (Cat. No. 1771IFF Series A) 8 differential, or 16 differential inputs
Specifications (Cat. No. 1771IFF/A)
Specifications (Cat. No. 1771IFF/A)
Inputs per module
16 singleended; 8 differential low level
Module location
1771 I/O chassis - 1 slot
Nominal input voltage
+1 to +5V dc
0 to 5V dc
5 to + 5V dc
10 to +10V dc
0 to 10V dc
Environmental conditions:
Operational temperature
Storage temperature
Relative humidity
Operating
Storage
Nominal input current
Resolution
+4 to +20mA
0 to +20mA
20 to +20mA
12bit binary,
12 bits plus sign in bipolar ranges
Accuracy
0.1% of full scale range @ 25oC
Linearity
+1LSB
Repeatability
+1LSB
Isolation voltage
Isolation meets or exceeds UL Standard
508, and CSA Standard C22.2 No. 142.
Input overvoltage protection
(current ranges)
35V (voltage mode)1
8V (current mode)2
Common mode voltage
+35 Volts
Input impedance
>10 megohms for voltage ranges;
250 ohms for current ranges
Common mode rejection
80 db, dc120Hz
Backplane current
500mA @ +5V
Power dissipation
2.5 Watts (maximum)
Thermal dissipation
8.52 BTU/hr (maximum)
Unscaled BCD and binary output
to processor
0000 to +409510 for polar ranges
(0 to 5V, +1 to +5V, 0 to +20mA, and +4 to
20mA)
409510 to 409510 for bipolar ranges (+5V,
+10V, +20mA)
Engineering units sent to
processor
Fastest internal scan rate
+9999 with selectable scaling
8 channels in less than 2ms (Depends on
number of oversamples, number of
channels, and active teatures.)
Conductors
Wire size
Category
0o to 60oC (32o to 140oF)
-40o to 85oC (-40o to 185oF)
5 to 95% (noncondensing)
5 to 90% (noncondensing)
14 gauge (2mm2) stranded maximum
3/64 inch (1.2mm) insulation maximum
23
Keying
Between 10 and 12
Between 24 and 26
Field wiring arm
Catalog number 1771WG
Wiring arm screw torque
79 inchpounds
Publications
User manual
Installation Instructions
Publication 17716.5.116
Publication 17715.46
Agency Certification
(when product or packaging is
marked)
1
2
3
• CSA certified
• CSA Class I, Division 2, Groups A, B,
C, D certified
• UL listed
• CE marked for all applicable directives
The inputs are protected to 35V.
Only 8 volts can be placed directly across the input when configured in the current
mode.
Refer to publication 17704.1, Industrial Automation Wiring and Grounding
Guidelines."
Status Indicators
FAST
ANALOG
(12 BIT)
RUN
Green Run indicator
FAULT
Red Fault indicator
10528I
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
15
Intrisically Safe Fast Millivolt Input Module (Cat. No 1771IFMS Series A)
Simplified Schematic
1KΩ
Channel
1 (+)
Ch 1
Data
System
Circuitry
Opto
isolation
Opto
isolation
A/D
Converter
_ VIN-
Sample
and
Hold
+ VIN+
Multi
plexer
Ch 2
0.39µF
1MΩ
Common
Ch 3
Ch 4
0.1µF
0.39µF
1MΩ
0.1µF
1KΩ
Control
Channel
1 (-)
To next multiplexer for channels 5 through 8
Application Notes
Product Compatibility - The Fast Millivolt Input
Module can be used with any 1771 I/O chassis. Insert
the module in any slot in the I/O chassis except for the
leftmost slot which is reserved for the processor or
adapter. You can put two input modules, or an input
module and an output module, in the same module
group. Do not put this module in the same module
group as a digital high density module unless you are
using 1 or 1/2slot addressing.
Status Indicators - The front panel of the input
module contains a green RUN and a red FLT (fault)
indicator. At powerup an initial module selfcheck
occurs. If there is no fault, the red indicator turns off.
The green indicator will blink until the processor
completes a successful write block transfer to the
module. The green indicator remains on while the
module is powered. Any time a fault is detected, the
red FLT indicator lights up.
Wiring - Wiring to the analog input module connects
to the 1771WG field wiring arm. The wiring arm
pivots upward and connects with the module so that
you can install or remove the module without
disconnecting the wiring. Recommended maximum
cable length for voltage input devices is 50 feet.
Configurable Features • 8 differential inputs on one card
• selectable real time sampling
• selectable scaling to engineering units
• selectable digital filtering
• 0 to 50mV input range with extended linear range
above 50mV and below 0mV
Connection Diagram
Analog
Source
+
+
Analog
Source
NOTE:
1. Unused channels must have their + and inputs
jumpered together and tied to module common.
Channel 1+
Channel 1
Common 1 and 2
Channel 2+
Channel 2
Channel 3+
Channel 3
Common 3 and 4
Channel 4+
Channel 4
Channel 5+
Channel 5
Common 5 and 6
Channel 6+
Channel 6
Channel 7+
Channel 7
Common 7 and 8
Channel 8+
Channel 8
Not used
2. Analog signals must be within the +10V common
mode voltage range which is referenced to the analog
system common.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Field Wiring Arm
Cat. No. 1771WG
Publication 17712.183 - May 1996
16
1771 Analog Input and Output Modules
Intrisically Safe Fast Millivolt Input Module (Cat. No 1771IFMS Series A)
Specifications (Cat. No. 1771IFMS/A)
Specifications (Cat. No. 1771IFMS/A)
Inputs per module
Module location
Input voltage range
Resolution
Accuracy
Linearity
Repeatability
Isolation Voltage
Conductors
Wire size
Input overvoltage
protection
Maximum input voltage
Input impedance
Common mode
rejection
BCD and unscaled
output to processor
Engineering units sent
to processor
A/D converter
Resolution
Absolute accuracy
Quantizing error
Temperature
coefficient
Internal scan rate
Recalibration time
Backplane current
Power dissipation
Thermal dissipation
Environmental
conditions
Operational temp.:
Storage temperature:
Relative humidity:
Operating
Storage
8 differential, low level
1771 I/O rack - 1 slot
0 to 50mV
12bit binary
0.1% of full range @ 25oC
+1 LSB
+1 LSB
Isolation meets or exceeds UL Standard
508, and CSA Standard C22.2 No. 142.
32V
+10V
1 megohm
100db dc 60Hz
0000 to 409510
9999 BCD with selectable scaling
32767 Binary
monotonic output with no missing codes
12-bit binary
+0.1% of full scale
+1/2 LSB
+50ppm/oC of full scale range for 0 to 60oC
ambient
14.5ms for 8 differential inputs (no digital
filtering ) - add 2.5ms for filtering, 0.25ms
for BCD format
check calibration at 6 month intervals to
maintain specified accuracy
0.75A @ +5V
3.75 Watts (maximum)
12.8 BTU/hr (maximum)
0o to 60oC (32o to 140oF)
-40o to 85oC (-40o to 185oF)
5 to 95% (noncondensing)
5 to 95% (noncondensing)
Publication 17712.183 - May 1996
Category
Keying
Field wiring arm
Wiring arm screw
torque
Agency Certification
(when product or
packaging is marked)
User manual
1
14 gauge (2mm2) stranded maximum
3/64 inch (1.2mm) insulation maximum
21
Between 20 and 22
Between 28 and 30
Catalog number 1771WG
79 inchpounds
• CSA certified
• CSA Class I, Division 2,
Groups A, B, C, D certified
• UL listed
• CE marked for all applicable directives
17716.5.57
Refer to publication 17704.1, Industrial Automation Wiring and Grounding
Guidelines."
Status Indicators
RUN
Green RUN indicator
FLT
Red FLT indicator
1771 Analog Input and Output Modules
17
Isolated Input Module (Cat. No. 1771IL Series C)
Simplified Schematic
Micro
processor
Opto
isolation
+15V
+12V
A/D
Converter
+2.5V
20MΩ
_
1.5KΩ
1KΩ
+
0.01µF
Opto
isolation
A/D
Converter
2 of 8 circuits,
and so on
Application Notes
Analog
In
0.1µF
1 of 8 circuits shown
-12V
Analog
Return
250Ω
Connection Diagram
Product Compatibility - This module is compatible with all 1771 I/O
chassis. Insert the module in any chassis slot except the leftmost,
which is reserved for the processor or adapter module.
Status Indicators - The front panel of the input module contains a
green RUN and a red FLT (fault) indicator. At powerup an initial
module selfcheck occurs. If there is no fault, the red indicator turns
off. The green indicator will blink until the processor completes a
successful write block transfer to the module. The green indicator
remains on while the module is powered. Any time a fault is
detected, the red FLT indicator lights up.
Wiring - Wiring to the analog input module connects to the
1771WF field wiring arm. The wiring arm pivots upward and
connects with the module so that you can install or remove the
module without disconnecting the wiring. Recommended maximum
cable length for voltage input devices is 50 feet.
Configurable Features • 8 software configurable differential inputs
• user selectable input ranges
• selectable real time sampling
• selectable scaling to engineering units
• selectable digital filtering
• +1000V input isolation, channeltochannel, channeltoground
+
18
Analog Source
16
–
Ground
14
+
Analog Source
12
10
–
Ground
8
6
4
2
18
17
Channel 1
16
15
Channel 2
14
Channel 3
13
12
11
10
9
Channel 4
Do not use
8
7
Channel 5
6
5
Channel 6
4
3
Channel 7
2
Channel 8
1
NOTE: The 1771IL/C module does not supply loop
power for loop powered analog sources
(transmitters, transducers, etc.). Loop power
must be supplied by the user.
Field Wiring Arm
Cat. No. 1771WF
11846I
Publication 17712.183 - May 1996
18
1771 Analog Input and Output Modules
Isolated Input Module (Cat. No. 1771IL Series C)
Specifications (Cat. No. 1771IL/C)
Specifications (Cat. No. 1771IL/C)
Inputs per module
8 fully isolated differential
Conductors
Module location
1771 I/O rack 1 slot
Input voltage ranges
(nominal)
+1 to +5V DC
0 to 5V DC
5 to +5V DC
10 to +10V DC
Input current ranges
(nominal)
+4 to +20mA
0 to +20mA
20 to +20mA
Resolution
16bit binary over full range (+10.7V);
0.33mV/bit, 1.3µA/bit
Accuracy
Voltage
Current
Typical 0.01% of full scale range @ 25oC
Maximum 0.05% of full scale range @ 25oC
Typical 0.06% of full scale range @ 25oC
Maximum 0.1% of full scale range @ 25oC
(Includes 0.05% with internal current resistor)
Linearity
+1 LSB
Repeatability
+1 LSB
Isolation voltage
Isolation meets or exceeds UL Standard 508, and
CSA Standard C22.2 No. 142.
Input overvoltage
protection
voltage mode: 140V ac (rms) continuous;
current mode: 8V dc continuous
Unscaled BCD and binary
output data to the
processor
0000 to +409510 for unipolar ranges (0 to 5V, +1
to +5V, 0 to +20mA, and +4 to +20mA)
409510 to 409510 for bipolar ranges +5V, +10V,
+20mA input
Input impedance
>10 megohms for voltage ranges; 250 ohms for
current ranges
Common mode rejection
>150db typical @ 60Hz and 1K ohm source
imbalance
Common mode impedence
>50 megohms shunted by <5nF
Normal mode rejection
>60db @ 60Hz
Open circuit detection
Voltage mode: Open input produces upscale
reading.
Current mode: Open input produces zero
reading.
Time to detect open circuit
10 seconds maximum
Calibration
Autocalibration for offset and gain
Verify every 6 months to maintain absolute
accuracy
Auto
Interval
Backplane current
1.1A @ +5V from I/O chassis backplane
Power dissipation
5.5 Watts maximum
Thermal dissipation
18.75 BTU/hr maximum
Engineering units sent to
processor
+9999 BCD with selectable scaling; +32767
binary
Internal scan rate
50ms for 8 channels
Environmental conditions
Operational temp.:
Storage temperature:
Relative humidity
0 to 600C (32 to 1400F)
40 to 850C (40 to 1850F
Operating: 5 to 95% (noncondensing)
Nonoperating: 5 to 80% (noncondensing)
Publication 17712.183 - May 1996
Wiring
Category
14 gauge (2mm2) stranded (max.);
3/64 inch (1.2mm) insulation (max.)
21
Keying
between 10 and 12 and between 32 and 34
Wiring arm
Catalog number 1771WF
Wiring arm screw torque
79 inchpounds
Agency Certification
(when product or
packaging is marked)
• CSA certified
• CSA Class I, Division 2, Groups A, B, C, D
certified
• UL listed
• CE marked for all applicable directives
User manual
Publication 17716.5.91
1 Refer to publication 17704.1, Industrial Automation Wiring and Grounding Guidelines."
Status Indicators
ISOLATED
ANALOG
INPUT
RUN
Green RUN indicator
FLT
Red FLT indicator
10528I
1771 Analog Input and Output Modules
19
RTD Input Module (Cat. No 1771IR Series C)
Simplified Schematic
Micro
processor
Opto
isolation
A/D
Converter
_
_
Filtering
and
Overvoltage
Protection
+
A/D
Converter
Channel 2 of 6
20KΩ
Excite (A)
+
Return (C)
0.22µF
Opto
isolation
1mA
Current
Source
11.0V
_
Lead
Compensation
(B)
20KΩ
+
Channel 1 of 6
11.0V
0.22µF
= Analog Input Common
Application Notes
Product Compatibility - The RTD Input Module can be used
with any 1771 I/O chassis. Insert the module in any slot of the
I/O chassis except for the leftmost slot reserved for the
processor or adapter. You can put two input modules, or an input
module and an output module, in the same module group. Do
not put this module in the same module group as a digital high
density module unless you are using 1 or 1/2slot addressing.
Avoid placing this module close to ac modules, or high voltage
dc modules.
Connection Diagram
18
16
RTD
14
Ground
12
Status Indicators - The front panel of the input module contains
a green RUN and a red FLT (fault) indicator. At powerup an initial
module selfcheck occurs. If there is no fault, the red indicator
turns off. The green indicator will blink until the processor
completes a successful write block transfer to the module. The
green indicator remains on while the module is powered. Any time
a fault is detected, the red FLT indicator lights up.
10
Wiring - Wiring to the analog input module connects to the
1771WG field wiring arm. The wiring arm pivots upward and
connects with the module so that you can install or remove the
module without disconnecting the wiring. Recommended maximum
cable length for voltage input devices is 50 feet.
2
Configurable Features
• 6 resistance temperature detector inputs
• reports ohms for other types of sensors
• software configurable
• autocalibration
• open wire detection
8
6
4
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Terminal
Identification
C
B
A
C
B
A
C
B
A
C
B
A
C
B
A
C
B
A
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Field Wiring Arm
Cat. No. 1771WG
Publication 17712.183 - May 1996
20
1771 Analog Input and Output Modules
RTD Input Module (Cat. No 1771IR Series C)
Specifications (Cat. No. 1771IR/C)
Specifications (Cat. No. 1771IR/C)
Module capacity
Module location
Sensor type
Backplane current
Power dissipation
Thermal dissipation
Environmental conditions
Operational temperature:
Rate of change:
Units of measure
Temperature range
Resistance range
Resolution
Sensor excitation
Isolation Voltage
Common mode rejection
Common mode impedance
Normal mode rejection
Input overvoltage protection
Open RTD response time
Scan time
6 RTD Input Channels
1771 I/O Chassis
100 ohm platinum (alpha = 0.00385)
or 10 ohm copper (alpha = 0.00386)
Other types may be used with report in
ohms only
Temperature in oC
Temperature in oF
RTD resistance in ohms (10 milliohms or
30 milliohms resolution)
Platinum: -200 to +870oC (-328 to
+1598oF)
Copper: -200 to +260oC (-328 to +500oF)
1.00 to 600.00 ohms
Platinum: 0.1oC (0.1oF)
Copper: 0.3oC (0.5oF)
1mA constant current source supplied by
module
Isolation meets or exceeds UL Standard
508, and CSA Standard C22.2 No. 142.
120db @ 60Hz, up to 1000V peak
Greater than 10 megohms
60dB at 60Hz
120V rms, continuous
Open excitation (terminal A ) overerrange:
<0.5s
Open Common (terminal C) to underrange:
<0.5s
Open Sense (terminal B ): drift high
50ms for all 6 channels
Storage temperature:
Relative humidity:
Operating
Storage
Keying
Field wiring arm
Field wiring arm screw torque
Agency Certification
(when product or packaging is
marked)
User manual
950mA maximum
4.75 Watts
16.2 BTU/hr
0o to 60oC (32o to 140oF)
Ambient changes greater than 01.0oC per
minute may temporarily degrade
performance during periods of change.
-40o to 85oC (-40o to 185oF)
5 to 95% (noncondensing)
5 to 95% (noncondensing)
Between 10 and 12
Between 28 and 30
Catalog number 1771WF
79 inchpounds
• CSA certified
• CSA Class I, Division 2, Groups A, B, C,
D certified
• UL listed
• CE marked for all applicable directives
Publication 17716.5.76
1 Refer to publication 17704.1, Industrial Automation Wiring and Grounding Guidelines."
Status Indicators
ANALOG
IN
(12 BIT)
RUN
Green RUN indicator
FLT
Red FLT indicator
RTD Type
Range
Error @ Calibration Temperature (25oC) (over range)
Drift oC/oC or oF/oF
Copper
-200 to +260oC (-328 to +500oF)
+0.344oC/+0.564oF
+0.1306
Platinum
-200 to +870oC (-328 to 1598oF)
+0.100oC/+0.152oF
+0.0717
RTD Type
Resistance Error @ 25oC (over range)
Resistance Drift Ohm/oC
Copper
+0.074 ohm
+0.0213
Platinum
+0.075 ohm
+0.0213
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
21
Thermocouple/Millivolt Input (Cat. No.1771IXE Series C)
Simplified Schematic
System
logic
Filtering and Overvoltage
Protection
Opto
isolation
A/D
Converter
Opto
isolation
A/D
Converter
+15V
>30MΩ
_
20KΩ
+
Analog Input
+105mV
50Ω
0.22µF
Input 2 of 8
Input 1 of 8
= Analog Input Common
Application Notes
Product Compatibility - The module is compatible with all
1771-A1B through A4B or later I/O chassis. Insert the module in
any slot in the chassis except the leftmost slot, which is reserved for
a processor or adapter module.
Status Indicators - The front panel of the input module contains a
green RUN and a red FLT (fault) indicator. At powerup the red and
green indicators are on. If there is no fault, the red indicator turns off.
The green indicator will blink until the processor completes a
successful write block transfer to the module. Any time a fault is
detected, the red FLT indicator lights up.
Wiring - Wiring to the analog input module is connected to the
1771WI field wiring arm. The wiring arm pivots upward and
connects with the module so that you can install or remove the
module without disconnecting the wiring. Recommended maximum
cable length for voltage input devices is 50 feet.
Configurable Features -
• 8 input channels configurable for thermocouple input
ranges or millivolt: Types E,J,K,T,R and S
thermocouples and +100 millivolts (full range is +105mV)
• two types of inputs allowed at the same time:
4 of one type and 4 of another
• cold junction compensation
• user selectable high and low temperature alarms
Connection Diagram
Terminal Identification
Terminal Function
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Input 1 (+ lead)
Input 1 (- lead)
Input 2 (+ lead)
Input 2 (- lead)
Input 3 (+ lead)
Input 3 (- lead)
Input 4 (+ lead)
Input 4 (- lead)
Not Used
Not used
Input 5 (+ lead)
Input 5 (- lead)
Input 6 (+ lead)
Input 6 (- lead)
Input 7 (+ lead)
Input 7 (- lead)
Input 8 (+ lead)
Input 8 (- lead)
+
18
Channel 1
–
+
16
–
Channel 2
14
12
10
Do not use
8
6
4
2
Short circuit
unused pins
•
•
Field Wiring Arm
Cat. No. 1771-WI
Connect positive thermocouple
leads to evennumbered terminals,
negative leads to oddnumbered
terminals.
Ground cable shield to I/O chassis
mounting bolt.
10527-I
Publication 17712.183 - May 1996
22
1771 Analog Input and Output Modules
Thermocouple/Millivolt Input (Cat. No.1771IXE Series C)
Specifications (Cat. No. 1771IXE/C)
Specifications (Cat. No. 1771IXE/C)
Number of inputs
I/O chassis location
Type of input
Environmental
conditions
Operating temp.:
Rate of change:
Thermocouple
linearization
Cold junction
compensation
Temperature scale
(selectable)
Input resolution
Common mode rejection
Common mode
impedance
Normal mode rejection
Input overvoltage
protection
Open input detection
Isolation voltage
Backplane current
Power dissipation
Thermal dissipation
Data format (selectable)
Calibration
Auto
Manual
Check
8, all of the same type, or 4 each of 2 different types
Any single I/O module slot
Type E, chromel/constantan
(-270 to 1000oC)
Type J, iron/constantan (-210 to 1200oC)
Type K, chromel/alumel (-270 to 1380oC)
Type R, Pt/Pt13% Rh (-50 to 1770oC)
Type S, Pt/Pt10% Rh (-50 to 1770oC)
Type T, copper/constantan
(-270 to 400oC)
Millivolt (-105 to =105mV dc)
IPTSstandard, NBS MN125
Range: 0 to 60oC
Accuracy: + 0.5oC
oC or oF
1oC, 1oF, or 10uV
120db @ 60Hz, up to 1000V peak
Greater than 10 megohms
60dB at 60Hz
120V rms, continuous
Open input produces maximum value reading in
less than 10s
Isolation meets or exceeds UL Standard 508,
and CSA Standard C22.2 No. 142.
850mA @ 5V
4.25 Watts (maximum)
14.5 BTU/hr (maximum)
4digit BCD
2's compliment binary
signed magnitude binary
Autocalibration for offset and gain
Zero, offset and gain adjustment for each channel
via programming terminal
Verify every six months for maintaining absolute
accuracy
Storage temp.:
Relative humidity:
Operating
Storage
Processor compatibility
Keying
Field wiring arm
Wiring arm screw torque
Agency Certification
(when product or
packaging is marked)
User manual
0o to 60oC (32o to 140oF)
Ambient changes greater than 0.5oC per minute
may temporarily degrade performance during
periods of change
-40o to 85oC (-40o to 185oF)
5 to 95% (noncondensing)
5 to 95% (noncondensing)
Any AB processor using 1771 I/O structure block
transfer
Between 20 and 22
Between 24 and 26
Catalog number 1771WI
79 inchpounds
• CSA certified
• CSA Class I, Division 2, Groups A, B, C, D
certified
• UL listed
• CE marked for all applicable directives
Publication 17716.5.77
1 Refer to publication 17704.1, Industrial Automation Wiring and Grounding Guidelines."
Status Indicators
ANALOG
IN
(12 BIT)
RUN
Green RUN indicator
FLT
Red FLT indicator
10528I
Publication 17712.183 - May 1996
1771 Analog Input and Output Modules
23
High Resolution Thermocouple/Millivolt Input (Cat. No. 1771IXHR)
Simplified Schematic
System
logic
Filtering and Overvoltage
Protection
Opto
isolation
A/D
Converter
Opto
isolation
A/D
Converter
+15V
>30MΩ
_
20KΩ
+
50Ω
0.22µF
Analog Input
+105mV
Input 2 of 8
Input 1 of 8
= Analog Input Common
Application Notes
Product Compatibility - The module is compatible with
1771A1B through A4B or later I/O chassis. Insert the
module in any slot in the chassis except the leftmost slot,
which is reserved for the processor or adapter module.
Status Indicators - The front panel of the input module
contains a green RUN and a red FLT (fault) indicator. At
powerup the red and green indicators are on. If there is no
fault, the red indicator turns off. The green indicator will blink
until the processor completes a successful write block
transfer to the module. Any time a fault is detected, the red
FLT indicator lights up.
Wiring - Wiring to the analog input module is connected to
the 1771WI field wiring arm. The wiring arm pivots upward
and connects with the module so that you can install or
remove the module without disconnecting the wiring.
Recommended maximum cable length for voltage input
devices is 50 feet.
Connection Diagram
18 Input 1 (+ lead)
17 Input 1 (- lead)
18
16 Input 2 (+ lead)
16
15 Input 2 (- lead)
14 Input 3 (+ lead)
13 Input 3 (- lead)
14
12 Input 4 (+ lead)
12
11 Input 4 (- lead)
10 Not Used
9 Not used
8 Input 5 (+ lead)
10
6
4 Input 7 (+ lead)
4
3 Input 7 (- lead)
• 8 input channels configurable for thermocouple input
ranges (Types B, E, J, K, T, R and S thermocouples)
and +100 millivolts (full range is +105V)
• two types of input allowed at one time: 4 of one type
and 4 of another
• cold junction compensation
• user selectable high and low temperature alarms
2 Input 8 (+ lead)
–
+
–
Channel 2
Do not use
8
7 Input 5 (- lead)
6 Input 6 (+ lead)
5 Input 6 (- lead)
Configurable Features
Channel 1
+
2
1 Input 8 (- lead)
Short circuit
unused pins
•
•
Connect positive thermocouple
leads to evennumbered terminals,
negative leads to oddnumbered
terminals.
Ground cable shield to I/O chassis
mounting bolt.
10527-I
Field Wiring Arm
Cat. No. 1771-WI
Publication 17712.183 - May 1996
24
1771 Analog Input and Output Modules Product Data
High Resolution Thermocouple/Millivolt Input (Cat. No. 1771IXHR)
Specifications (Cat. No. 1771IXHR)
Specifications (Cat. No. 1771IXHR)
Number of inputs
I/O chassis location
Type of input
Thermocouple
linearization
Cold junction
compensation
Temperature scale
selectable
Input resolution
Display resolution
Input isolation
8, all of the same type or 4 each of 2 different types
Any single I/O module slot
See table below.
IPTSstandard, NBS MN125
Environmental
conditions:
Operational temp.
Rate of change:
Range: 0 to 60oC
Accuracy: + 0.5oC
oC or oF
Storage temp.:
Relative humidity:
Operating
Storage
Keying
Common mode rejection
Common mode
impedance
Normal mode rejection
Input overvoltage
protection
Open input detection
Data format
Backplane current
Thermal dissipation
Power dissipation
Calibration
Auto
Manual
Check
3.2328µV
0.1oC, 0.1oF, or 1.0µV, 10µV
Isolation meets or exceeds UL Standard 508,
and CSA Standard C22.2 No. 142.
120db @ 60Hz, up to 1000V peak
Greater than 10 megohms
60dB at 60Hz
120V rms, continuous
Open input produces an overrange in less than 10s
2's complement binary
850mA @ 5V
4.255 Watts (maximum)
14.5 BTU/hr (maximum)
Autocalibration for offset and gain
Zero offset and gain adjustment for each channel
via programming terminal
Verify every six months to maintain absolute
accuracy
Field wiring arm
Wiring arm screw torque
Processor compatibility
0o to 60oC (32o to 140oF)
Ambient changes greater than 0.5oC per minute
may temporarily degrade performance during
periods of change
-40o to 85oC (-40o to 185oF)
5 to 95% (noncondensing)
5 to 95% (noncondensing)
Between 20 and 22
Between 24 and 26
Catalog number 1771WI
79 inchpounds
PLC3 or PLC5 family processor using the 1771I/O
structure and block transfer. (Not recommended for
use with the PLC2 family processors.)
Agency Certification
(when product or
packaging is marked)
• CSA certified
• CSA Class I, Division 2, Groups A, B, C, D
certified
• UL listed
• CE marked for all applicable directives
User manual
17716.5.80
1 Refer to publication 17704.1, Industrial Automation Wiring and Grounding Guidelines."
Status Indicators
ANALOG
IN
(12 BIT)
RUN
Green RUN indicator
FLT
Red FLT indicator
10528I
Types of Inputs for the 1771IXHR Module
Input Type
Type B, Pt 30% Rh/Pt6% Rh
Type E, chromel/constantan
Type J, iron/constantan
Type K, chromel/alumel
Type R, Pt/Pt13% Rh
Type S, Pt/Pt10% Rh
Type T, copper/constantan
Millivolt
Publication 17712.183 - May 1996
(320 to 1800oC)
(-270 to 1000oC)
(-210 to 1200oC)
(-270 to 1380oC)
(-50 to 1770oC)
(-50 to 1770oC)
(-270 to 400oC)
(-105 to +105mV dc)
1771 Analog Input and Output Modules
25
Analog Output Module (Cat. No. 1771OFE1, OFE2 and OFE3, Series B)
Simplified Schematic
5KΩ
J10
25KΩ
J8
12.5KΩ
J6
10V
J9
Voltage Output
System
Circuitry
V+
Opto
isolation
_
D/A
Converter
Opto
isolation
287Ω
12.5KΩ
+
J7
D/A
Converter
10V
Current Output
25KΩ
_
10V
MOV
+
12.5KΩ
J5
V-
Channel 2 of 4, etc.
15V
Channel 1 shown
Opto
isolation
Opto
isolation
D/A
Converter
_
10KΩ
+
D/A
Converter
Channel 2 of 4, etc.
V-
+15V
150Ω (60Ω for OFE3)
_
_
+
40KΩ
(omit for
OFE3)
Output
Ranges
+10V
010V
1-5V
287Ω
V+
2.4KΩ
System
Circuitry
0.0047µF
+15V
4.7KΩ
10V
Output
Ranges
420mA
050mA
+
Channel 1 shown
0.047µF
15V
Application Notes
Product Compatibility - The analog output module can be used
with any 1771 I/O chassis. Insert the module in any slot of the I/O
chassis except for the leftmost slot reserved for the processor or
adapter. You can put two input modules, or an input module and an
output module, in the same module group. Do not put this module
in the same module group as a discrete high density module unless
you are using 1 or 1/2slot addressing. Avoid placing this module
close to ac modules, or high voltage dc modules.
Status Indicators - The front panel of the input module contains a
green RUN and a red FLT (fault) indicator. At powerup an initial
module selfcheck occurs. If there is no fault, the red indicator turns
off and the green indicator turn on. The green indicator remains on
while the module is powered. Any time a fault occurs, the red FLT
indicator lights up.
Wiring - Wiring to the analog input module connects to the 1771WC
field wiring arm. The wiring arm pivots upward and connects with the
module so that you can install or remove it without disconnecting the
wires. Recommended maximum cable length for voltage input devices
is 50 feet.
Configurable Features • 4 individually isolated differential outputs
• selectable scaling to engineering units
• selectable data formats
• selectable voltage ranges (1771OFE1 only)
• requires only one I/O slot
Connection Diagram
A
User
Analog
Device
0
1
2
Channel 2 (+)
Channel 2 ()
4
Channel 3 (+)
Channel 3 ()
5
Channel 4 (+)
3
Ground
Channel 1 (+)
Channel 1 ()
6
7
B
Channel 4 ()
Not used
Not used
Field Wiring Arm
Cat. No 1771WC
Publication 17712.183 - May 1996
26
1771 Analog Input and Output Modules
Analog Output Module (Cat. No. 1771OFE1, OFE2 and OFE3, Series B)
Specifications (Cat. No. 1771OFE1,2,3)
Specifications (Cat. No. 1771OFE1,2,3)
Outputs per module
4 individually isolated
Module location
Bulletin 1771 I/O chassis - 1 slot
Output voltage ranges
(nominal)
- 1771OFE1 only
+1 to +5V dc
-10 to +10V dc
0 to +10V dc
Environmental conditions
Operational temp.:
Storage temp.:
Relative himidity:
Operating
Storage
Output current (maximum)
- 1771OFE1 only
10mA per channel in voltage mode
(1771-OFE1)
Output current ranges
(nominal)
+4 to +20mA (1771-OFE2)
0 to +50mA (1771-OFE3)
Digital resolution
12Bit Binary - 1 part in 4095
Output capacitance
0.01µF (voltage outputs)
0.022µF (current outputs)
Output impedance
<0.25 ohms for voltage outputs exclusive of
contact wiring resistance
>1.5 megohms for current outputs
Maximum loop impedance
in the current mode
1771OFE2 - Up to 1200 ohms load resistance
1771OFE3 - Up to 450 ohms load resistance
Output overload protection
All outputs are protected against short circuit
load conditions not to exceed one minute.
Backplane power
1771OFE1
1771OFE2
1771OFE3
1.50A
1.50A
2.50A
Power dissipation
1771OFE1
1771OFE2
1771OFE3
7.9W
7.9W
13.1W
Thermal dissipation
1771OFE1
1771OFE2
1771OFE3
26.9 BTU/hr
26.9 BTU/hr
44.5 BTU/hr
Isolation voltage
Isolation meets or exceeds UL Standard 508,
and CSA Standard C22.2 No. 142.
D/A converter settling time
0.8ms maximum for a resistive load
Internal scan rate
8.0ms for all channels using BCD data, scaling
1.6ms for all channels using binary data, no
scaling
Accuracy (including
linearity, gain, and offset at
25oC)
+0.1% of full scale
+1/2 LSD (BCD Mode)
+1/2 LSB (BINARY Mode)
Temperature coefficient
+50 ppm/oC of full scale range
0oC to +60oC (+32oF to +140oF)
-40oC to +85oC (-40oF to +185oF)
5% to 95% (noncondensing)
5% to 95% (noncondensing)
Field wiring arm
Catalog number 1771WC
Field wiring arm screw
torque
79 inchpounds
Agency Certification
(when product or
packaging is marked)
• CSA certified
• CSA Class I, Division 2, Groups A, B,
C, D certified
• UL listed
• CE marked for all applicable directives
Publications
User manual
Installation Instruction
1
Publication 17716.5.30
Publication 17715.44
Refer to publication 17704.1, Industrial Automation Wiring and Grounding
Guidelines."
Status Indicators
RUN
Green RUN indicator
F LT
Red Fault Indicator
Output Current (mA)
1771OFE3 Loop Impedance vs.
Temperature
40o 47o 53o
50
40
35
30
20
10
10
20
30
40
50
Ambient Temperature (oC)
Publication 17712.183 - May 1996
150-450Ω load
100Ω load
50Ω load
0Ω load
60
1771 Analog Input and Output Modules Product Data
27
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Publication 17712.183 - May 1996
AllenBradley, a Rockwell Automation Business, has been helping its customers improve
productivity and quality for more than 90 years. We design, manufacture and support a broad
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Publication 17712.183 - May 1996
Copyright 1996 AllenBradley Company, Inc. Printed in USA