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Service Bulletin
Enwatch 24V DC Replacement Kit
Catalog Numbers
Topic Page
Important User Information 2
Before You Begin 3
Parts List 3
Identify the Enwatch Board Issue 4
Identify the Power Supply 4
Exchange the Enwatch Boards and Power Supplies 5
Remove the Enwatch Board 5
Remove the Power Supply Mounting Base Plate 7
Install the New Power Supply Mounting Base Plate 8
Install the Enwatch Board 8
EK-44750C, EK-44750C-RK24V series B
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2 Enwatch 24V DC Replacement Kit
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid
State Controls (publication
differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment,
all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation,
Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or
death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you
identify a hazard, avoid a hazard and recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of the product.
Rockwell Automation Publication GMSI10-SB001A-EN-P - May 2013
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Enwatch 24V DC Replacement Kit 3
Before You Begin
Use these instructions to exchange an Issue F and earlier Enwatch® online
surveillance board that is powered by a 12V DC power supply with an Issue G
board that is powered by a 24V DC power supply.
IMPORTANT
• These instructions apply only to Enwatch boards P/N EK-44750C. Enwatch CSANI P/N
EK-44750CSANI must be returned to a Rockwell Automation repair center for all
board replacements and repairs.
• All Enwatch boards (EK-44750C and EK-44750CSANI) built before July 2005 were
powered by a 12V DC power supply. All boards shipped after July 2005 operate using
a 24V DC power supply.
• It is important to use the correct power supply when exchanging Enwatch boards.
Using the incorrect power supply can cause damage to the Enwatch board.
• Always replace both the board and the power supply using the components
supplied in the kit, catalog number EK-44750C-RK24V series B.
Note: Repairs and retrofits should be made only by authorized Rockwell service
personnel.
The boards can be differentiated by the issue letter. All Issue F or earlier boards
are powered with a 12V DC power supply. All Issue G or later boards are
powered by 24V DC power supplies. All other functionality is the same. See
Identify the Enwatch Board Issue and Identify the Power Supply on page 4 for
more information.
Parts List
Enwatch 24V DC Replacement Kit, catalog number EK-44750C-RK24V
series B, contains the following:
• 24V DC Enwatch board (Issue G)
• Mounting base plate fitted with 24V DC power supply
IMPORTANT
Use the Enwatch replacement kit when it is not possible to ship the entire
Enwatch enclosure system to a Rockwell Automation repair center.
The kit is designed to replace the EK-44750C Enwatch board. To avoid mismatching the
power supply and Enwatch board, you must replace the mounting base plate (with 24V
DC power supply) and board at the same time. Do not replace only the board.
Rockwell Automation Publication GMSI10-SB001A-EN-P - May 2013