Rockwell Automation 1769-IF8 User Manual
Installation Instructions
Compact I/O 1769-IF8 Analog Input Module
Inside
Module Description .................................................................................. 2
Module Installation...................................................................................3
System Assembly......................................................................................4
Mounting Expansion I/O ........................................................................... 5
Replacing a Single Module within a System ........................................... 7
Module Spare/Replacement Parts ...........................................................8
Field Wiring Connections..........................................................................8
I/O Memory Mapping .............................................................................13
Specifications ......................................................................................... 24
Hazardous Location Considerations .......................................................27
Environnements dangereux ....................................................................27
For More Information..............................................................................28
Publication 1769-IN067B-EN-P - September 2005
2 Compact I/O 1769-IF8 Analog Input Module
Module Description
V/I in 0-
ANLG Com
V/I in 1-
ANLG Com
V/I in 2-
ANLG Com
V/I in 3-
ANLG Com
NC
2a
WARNING -Do Not
Remove RTB Unless
Area is Non-Hazardous
V in 0+
V/I in 4-
I in 0+
ANLG Com
V in 1+
V/I in 5-
I in 1+
ANLG Com
V in 2+
V/I in 6-
I in 2+
ANLG Com
V in 3+
V/I in 7-
I in 3+
ANLG Com
NC
1769-IF8
2b
3
V in 4+
I in 4+
V in 5+
I in 5+
V in 6+
I in 6+
V in 7+
I in 7+
NC
NC
1
OK
INPUT
Analog
10a
10
10b
8a
7a
7a
5a
9
7b
7b
8b
Item Description
1 bus lever
(with locking function)
2a upper panel mounting tab
2b lower panel mounting tab
3 module status LED
4 module door with terminal
identification label
4
5a movable bus connector
with female pins
5b stationary bus connector
with male pins
6 nameplate label
7a upper
tongue-and-groove slots
7b lower
5b
tongue-and-groove slots
8a upper DIN rail latch
6
8b lower DIN rail latch
9 write-on label (user ID tag)
10 removable terminal block (RTB)
with finger-safe cover
10a RTB upper retaining screw
10b RTB lower retaining screw
Publication 1769-IN067B-EN-P - September 2005
Compact I/O 1769-IF8 Analog Input Module 3
Module Installation
Compact I/O is suitable for use in an industrial environment when installed in
accordance with these instructions. Specifically, this equipment is intended for use
in clean, dry environments (Pollution degree 2
Over Voltage Category II
(2)
(IEC 60664-1).
Prevent Electrostatic Discharge
(1)
) and to circuits not exceeding
(3)
ATTENTION
Remove Power
ATTENTION
Electrostatic discharge can damage integrated circuits or
semiconductors if you touch bus connector pins or the terminal
block. Follow these guidelines when you handle the module:
• Touch a grounded object to discharge static potential.
• Wear an approved wrist-strap grounding device.
• Do not touch the bus connector or connector pins.
• Do not touch circuit components inside the module.
• If available, use a static-safe work station.
• When not in use, keep the module in its static-shield box.
Remove power before removing or inserting this module. When
you remove or insert a module with power applied, an electrical
arc may occur. An electrical arc can cause personal injury or
property damage by:
• sending an erroneous signal to your system’s field devices,
causing unintended machine motion
• causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create
electrical resistance.
(1)
Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that occasionally a
temporary conductivity caused by condensation shall be expected.
(2)
Over Voltage Category II is the load level section of the electrical distribution system. At this level transient voltages are
controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3)
Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC) designations.
Publication 1769-IN067B-EN-P - September 2005
4 Compact I/O 1769-IF8 Analog Input Module
System Assembly
The module can be attached to the controller or an adjacent I/O module before or
after mounting. For mounting instructions, see “Panel Mounting” on page 6, or
“DIN Rail Mounting” on page 7. To work with a system that is already mounted, see
“Replacing a Single Module within a System” on page 7.
The following procedure shows you how to assemble the Compact I/O system.
3
4
2
1. Disconnect power.
2. Check that the bus lever of the module to be installed is in the unlocked
(fully right) position.
3. Use the upper and lower tongue-and-groove slots (1) to secure the modules
together (or to a controller).
4. Move the module back along the tongue-and-groove slots until the bus
connectors (2) line up with each other.
5. Push the bus lever back slightly to clear the positioning tab (3). Use your
fingers or a small screwdriver.
1
1
5
6
30536-M
Publication 1769-IN067B-EN-P - September 2005
Compact I/O 1769-IF8 Analog Input Module 5
6. To allow communication between the controller and module, move the bus
lever fully to the left (4) until it clicks. Ensure it is locked firmly in place.
ATTENTION
When attaching I/O modules, it is very important that the bus
connectors are securely locked together to ensure proper
electrical connection.
7. Attach an end cap terminator (5) to the last module in the system by using
the tongue-and-groove slots as before.
8. Lock the end cap bus terminator (6).
IMPORTANT
A 1769-ECR or 1769-ECL right or left end cap must be used to
terminate the end of the communication bus.
Mounting Expansion I/O
ATTENTION
During panel or DIN rail mounting of all devices, be sure that all
debris (metal chips, wire strands, etc.) is kept from falling into the
module. Debris that falls into the module could cause damage on
power up.
Minimum Spacing
Maintain spacing from
enclosure walls,
wireways, adjacent
equipment, etc. Allow 50
mm (2 in.) of space on all
sides for adequate
ventilation, as shown:
Top
Host Controller
Side Side
Compact I/O
Bottom
Compact I/O
Compact I/O
End Cap
Compact I/O
Compact I/O
Publication 1769-IN067B-EN-P - September 2005
6 Compact I/O 1769-IF8 Analog Input Module
Panel Mounting
Mount the module to a panel using two screws per module. Use M4 or #8 panhead
screws. Mounting screws are required on every module.
Panel Mounting Using the Dimensional Template
Spacing for one-and-a-half-wide modules 52.5 mm (2.067 in).
Spacing for single-wide modules 35 mm (1.378 in).
Refer to host controller documentation for this dimension.
NOTE: Overall hole spacing
tolerance: ±0.4 mm (0.016 in.)
l Mounting
Locate holes every 17.5 mm (0.689 in) to allow for a
mix of single-wide and one-and-a-half-wide modules
(e.g., 1769-OA16).
Host Controller
Panel Mounting Procedure Using Modules as a Template
The following procedure allows you to use the assembled modules as a template
for drilling holes in the panel. If you have sophisticated panel mounting equipment,
you can use the dimensional template provided on
mounting hole tolerance, it is important to follow these procedures:
1. On a clean work surface, assemble no more than three modules.
2. Using the assembled modules as a template, carefully mark the center of all
module-mounting holes on the panel.
3. Return the assembled modules to the clean work surface, including any
previously mounted modules.
4. Drill and tap the mounting holes for the recommended M4 or #8 screw.
5. Place the modules back on the panel and check for proper hole alignment.
6. Attach the modules to the panel using the mounting screws.
NOTE
If mounting more modules, mount only the last one of this
group and put the others aside. This reduces remounting time
during drilling and tapping of the next group.
page 6. Due to module
7. Repeat steps 1 to 6 for any remaining modules.
Publication 1769-IN067B-EN-P - September 2005
Compact I/O 1769-IF8 Analog Input Module 7
DIN Rail Mounting
The module can be mounted using the following DIN rails: 35 x 7.5 mm (EN 50 022
- 35 x 7.5) or 35 x 15 mm (EN 50 022 - 35 x 15).
Before mounting the module on a DIN rail, close the DIN rail latches. Press the DIN
rail mounting area of the module against the DIN rail. The latches will momentarily
open and lock into place.
Replacing a Single Module within a System
The module can be replaced while the system is mounted to a panel (or DIN rail).
Follow these steps in order:
1. Remove power. See important note on page 3.
2. On the module to be removed, remove the upper and lower mounting
screws from the module (or open the DIN latches using a flat-blade or
phillips-style screwdriver).
3. Move the bus lever to the right to disconnect (unlock) the bus.
4. On the right-side adjacent module, move its bus lever to the right (unlock)
to disconnect it from the module to be removed.
5. Gently slide the disconnected module forward. If you feel excessive
resistance, check that the module has been disconnected from the bus and
that both mounting screws have been removed (or DIN latches opened).
NOTE
6. Before installing the replacement module, be sure that the bus lever on the
module to be installed, and on the right-side adjacent module are in the
unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus levers on the
replacement module and the right-side adjacent module.
9. Replace the mounting screws (or snap the module onto the DIN rail).
It may be necessary to rock the module slightly from front to
back to remove it, or, in a panel-mounted system, to loosen
the screws of adjacent modules.
Publication 1769-IN067B-EN-P - September 2005
8 Compact I/O 1769-IF8 Analog Input Module
Module Spare/Replacement Parts
• Terminal block, catalog number 1769-RTBN18 (1 per kit)
Field Wiring Connections
Grounding the Module
This product is intended to be mounted to a well-grounded mounting surface such
as a metal panel. Additional grounding connections from the module’s mounting
tabs or DIN rail (if used), are not required unless the mounting surface cannot be
grounded. Refer to Industrial Automation Wiring and Grounding Guidelines,
Allen-Bradley publication 1770-4.1, for additional information.
System Wiring Guidelines
Consider the following when wiring your system:
• All module commons (ANLG COM) are connected in the analog module.
The analog common (ANLG COM) is not connected to earth ground inside
the module.
• Do not use the analog module’s NC terminals as connection points.
• Channels are not isolated from each other.
• Use Belden™ 8761, or equivalent, shielded wire.
• Under normal conditions, the drain wire and shield junction must be
connected to earth ground via a panel or DIN rail mounting screw at the
analog I/O module end. Keep the shield connection to ground as short as
possible.
• To ensure optimum accuracy, limit overall cable impedance by keeping your
cable as short as possible. Locate the I/O system as close to your sensors or
actuators as your application will permit.
• If multiple power supplies are used with analog inputs, the power supply
commons must be connected.
(1)
In environments where high-frequency noise may be present, it may be necessary to directly ground cable shields to earth
at the module end and via a 0.1µF capacitor at the sensor end.
Publication 1769-IN067B-EN-P - September 2005
(1)
Compact I/O 1769-IF8 Analog Input Module 9
+
–
–
• The 1769-IF8 module does not provide loop power for analog inputs. Use a
power supply that matches the input transmitter specifications.
• Differential analog inputs are more immune to noise than single-ended
analog inputs.
• Voltages on Vin+, V/Iin-, and Iin+ of the 1769-IF8 module must be within
±10V dc of analog common.
ATTENTION
Be careful when stripping wires. Wire fragments that fall into a
module could cause damage at power up. Once wiring is
complete, ensure the module is free of all metal fragments.
Wiring Differential Inputs
Belden 8761 cable (or equivalent)
V/I in 0-
ANLG Com
V/I in 1-
ANLG Com
V/I in 2-
ANLG Com
V/I in 3-
ANLG Com
NC
V in 0+
I in 0+
V in 1+
I in 1+
V in 2+
I in 2+
V in 3+
I in 3+
NC
+
earth ground the
shield locally at
the module
V/I in 4-
ANLG Com
V/I in 5-
ANLG Com
V/I in 6-
ANLG Com
V/I in 7-
ANLG Com
NC
analog source
V in 4+
I in 4+
V in 5+
I in 5+
V in 6+
I in 6+
V in 7+
I in 7+
NC
Publication 1769-IN067B-EN-P - September 2005
10 Compact I/O 1769-IF8 Analog Input Module
–
–
Wiring Single-Ended Sensor/Transmitter Types
Sensor/Trans
mitter
Supply
1 The sensor power supply
must be rated Class 2.
+
-
(1)
Current
Transmitter
+
Signal
Voltage
Transmitter
+
Ground
Voltage
Transmitter
+
Ground
Signal
Signal
1769-IF8 Terminal Block
V in 0 +
in
0
-
V/I
I in 0 +
AN
LG
C
o
m
V in 1 +
in
1
-
V/I
I in 1 +
AN
LG
C
o
m
V in 2 +
V/I in 2
-
I in 2 +
AN
LG
C
o
m
V in 3 +
V/I
in
3
-
I in 3 +
AN
LG
C
o
m
NC
NC
Wiring for channels 4-7 are identical.
Wiring Mixed Transmitter Types
Single-ended
Signal
Voltage
Transmitter
+
–
Signal
Differential
Voltage
Transmitter
Supply
Differential
Current
Transmitter
Supply
2-Wire
Current
Transmitter
+
–
+
–
Signal
+
+
Signal
+
1769-IF8 Terminal Block
V in 0 +
V/I in 0 I in 0 +
ANLG Com
V in 1 +
V/I in 1 I in 1 +
ANLG Com
V in 2 +
V/I in 2 I in 2 +
ANLG Com
V in 3 +
V/I in 3 I in 3 +
ANLG Com
NC
NC
Sensor/
Transmitter
Supply
+
(1)
–
Publication 1769-IN067B-EN-P - September 2005
1 The sensor power supply
must be rated Class 2.
Wiring for channels 4-7 are identical.
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