Rockwell Automation 1769-OW8I User Manual
Installation Instructions
Compact™ Individually Isolated AC/DC Relay Output Module
(Catalog Number 1769-OW8I, Series B)
Inside
Module Description ................................................................................. 2
Module Installation.................................................................................. 3
System Assembly..................................................................................... 4
Mounting Expansion I/O .......................................................................... 5
Replacing a Single Module within a System .......................................... 7
Field Wiring Connections ......................................................................... 8
I/O Memory Mapping ............................................................................ 11
1769-OW8I Configuration File............................................................... 12
Spare/Replacement Module Parts ........................................................ 13
Specifications ........................................................................................ 14
Hazardous Location Considerations ...................................................... 17
Environnements dangereux ................................................................... 17
For More Information............................................................................. 18
Publication 1769-IN053A-EN-P - April 2001
2 Compact™ Individually Isolated AC/DC Relay Output Module
Module Description
5a
7a
1
2a
Item Description
1 bus lever
(with locking function)
3
2a upper panel mounting tab
DANGER
Do Not Remove RTB Under Power
10a
10b
8a
10
7a
Unless Area is Non-Hazardous
C
D
-V
C
A
V
0
0
T
U
O
C
D
-V
C
A
V
1
1
T
U
O
C
D
-V
C
A
V
2
2
T
U
O
C
D
-V
C
A
V
3
3
T
U
O
C
D
-V
C
A
V
4
4
T
U
O
C
D
-V
C
A
V
5
5
T
U
O
C
D
-V
C
A
V
6
6
T
U
O
C
D
-V
C
A
V
7
7
T
U
O
C
N
C
N
Ensure Adjacent
Bus Lever is Unlatched/Latched
Before/After
Removing/Inserting Module
W
-O
9
6
7
1
2b
4
I
8
2b lower panel mounting tab
3 I/O diagnostic LEDs
4 module door with terminal
identification label
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
tongue-and-groove slots
8a upper DIN rail latch
9
5b
8b lower DIN rail latch
9 write-on label (user ID tag)
10 removable terminal block (RTB)
with finger-safe cover
7b
6
7b
10a RTB upper retaining screw
10b RTB lower retaining screw
8b
Publication 1769-IN053A-EN-P - April 2001
Compact™ Individually Isolated AC/DC Relay Output 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. 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-IN053A-EN-P - April 2001
4 Compact™ Individually Isolated AC/DC Relay Output 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
1
6
5
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 bus locking tab (3). Use your
fingers or a small screwdriver.
Publication 1769-IN053A-EN-P - April 2001
Compact™ Individually Isolated AC/DC Relay Output 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 locks firmly into the bus
locking tab.
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 serial 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:
Side
Controller
Top
Side
Compact I/O
Compact I/O
Compact I/O
Bottom
Publication 1769-IN053A-EN-P - April 2001
End Cap
Compact I/O
Compact I/O
6 Compact™ Individually Isolated AC/DC Relay Output 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
For more than 2 modules: (number of modules - 1) x 35 mm (1.38 in.)
Refer to host controller documentation for this dimension.
Note: All dimensions are in mm (inches).
Hole spacing tolerance: ±0.4 mm (0.016 in.).
132
(5.197)
122.6±0.2
(4.826±0.008)
Host Controller
Compact I/O
35
(1.38)
Compact I/O
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 page 6. Due to module
mounting hole tolerance, it is important to follow these procedures:
Compact I/O
28.5
(1.12)
End Cap
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.
TIP
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.
7. Repeat steps 1 to 6 for any remaining modules.
Publication 1769-IN053A-EN-P - April 2001
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