Rockwell Automation 1769-SM2 User Manual
Installation Instructions
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1769-SM2 Compact I/O DSI/Modbus
Network Communication Module
This document instructs how to install a 1769-SM2 Compact I/O DSI/Modbus
Network Communication Module into the controller.
ATTENTION: Risk of equipment damage exists. Remove power before
installing or removing the 1769-SM2 module. When you install or remove
the module with power applied, an electrical arc may occur. An electrical
arc can cause personal injury or equipment 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.
ATTENTION: Risk of equipment damage exists. The 1769-SM2
module contains ESD (Electrostatic Discharge) sensitive parts that can be
damaged if you do not follow ESD control procedures. Static control
precautions are required when handling the module. If you are unfamiliar
with static control procedures, refer to Guarding Against Electrostatic
Damage, publication 8000-4.5.2.
Related Documentation
Document Description
1769-SM2 Compact I/O DSI/Modbus
Network Communication Module User
Manual, publication 1769-UM013
Guarding Against Electrostatic Damage,
publication 8000-4.5.2
Wiring and Grounding Guidelines for PWM
AC Drives, publication DRIVES-IN001
Documentation can be obtained online at www.rockwellautomation.com/literature.
To order paper copies of technical documentation, contact your local Rockwell
Automation distributor or sales representative.
For information such as firmware updates and answers to drive-related questions, go
to the Drives Service & Support web site at www.ab.com/support/abdrives
on the “Downloads” or “Knowledgebase” link.
Step 1
Remove power from the controller.
Provides complete installation, wiring, setup, and
communication information for the 1769-SM2 Network
Communication Module.
Provides static control procedures for protecting
electrostatic discharge sensitive parts.
Guidelines for proper wiring, grounding, and shielding, and
standard practices for noise protection.
and click
2
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ATTENTION: Risk of equipment damage exists. When
attaching the 1769-SM2 module to a Compact I/O system, it is
very important that the bus connectors are securely locked
together to ensure proper electrical connection. Failure to do
this may cause an electrical arc, which can cause personal
injury or equipment damage.
Step 2
Step 3
Set the 1769-SM2 module Configuration Mode switch and Operating
Mode (Single/Multi-Drive) switch to appropriate positions. For complete
switch setting details, see the 1769-SM2 module User Manual.
Assemble the 1769-SM2 module to the controller. It can be attached to
adjacent controller modules before or after mounting. For mounting
instructions, see Step 4A (Panel Mounting) or Step 4B (DIN Rail
Mounting). To work with a system that is already mounted, see Step 5.
1
3
A. Disconnect power.
2
2
4
5
7
6
B. Install the 1769-SM2 module within 4 slots of the power supply.
C. Check that the bus lever (item 1) of the 1769-SM2 module is in the
unlocked (fully right) position.
D. Use the upper and lower tongue-and-groove slots (item 2) to secure the
modules together.
E. Move the 1769-SM2 module back along the tongue-and-groove slots
until the bus connectors (item 3) line up with each other.
F. Use your fingers or a small screwdriver to push the bus lever back
slightly to clear the positioning tab (item 4).
G. Move the 1769-SM2 module’s bus lever fully to the left (item 5) until it
clicks. Ensure it is locked firmly in place.
H. Attach an end cap terminator (item 6) to the last module in the system
by using the tongue-and-groove slots as before.
I. Lock the end cap bus terminator (item 7).
Important: A 1769-ECR or 1769-ECL right or left end cap must be used
to terminate the end cap of the serial communication bus.
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ATTENTION: Risk of equipment damage exists. 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
1769-SM2 module. Debris that falls into the module could
cause damage on power up.
Compact I/O
Compact I/O
Compact I/O
Compact I/O
Compact I/O
End Cap or Cable
Controller
To p
Bottom
Side
Side
132 mm (5.19 in)
122.6 mm (4.83 in)
118 mm (4.65 in)
147.4 mm (5.81 in)
14.7 mm
(0.58 in)
35 mm
(1.38 in)
168 mm
(6.62 in)
147 mm
(5.79 in)
35 mm
(1.38 in)
13.5 mm
(0.53 in)
59 mm
(2.32 in)
59 mm
(2.32 in)
Mounting Hole
Dimension
DIN Rail
Center Line
28.5 mm
(1.12 in)
DSI
MODULE
CH1
CH2
CH3
C
H
1
C
H
2
C
H
3
Step 4
3
Mount the 1769-SM2 module.
Maintain spacing from enclosure walls, wireways, adjacent equipment, etc.
Allow 50 mm (2 in.) of space on all sides for adequate ventilation as shown.
Allow at least 140 mm (5.5 in.) of enclosure depth to accomodate the
1769-SM2 module.
A. Panel Mounting — Mount the 1769-SM2 module to a panel using two
screws per module. Use M4 or #8 panhead screws. Mounting screws are
required on every module.
Using a Dimensional Drawing
NOTE: All dimensions are in mm (inches). Hole spacing tolerance:
± 0.04 mm (0.016 in.).
Figure 1 1769-SM2 Module with MicroLogix 1500 Base Unit and Processor
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