Rockwell Automation 1792D-CB18JP User Manual
Installation Instructions
ArmorBlock MaXum I/O Cable Bases
DeviceNet Powered Outputs Series B
(Cat. No. 1792D-CB12JP and -CB18JP)
JP
CB18JP
This version of the ArmorBlock MaXum™ cable base lets you provide
power to outputs using DeviceNet™ power. No additional auxiliary
power cabling is needed. The ArmorBlock MaXum Ι/Ο cable bases
mate with 4 or 8 connector modules, depending on your installation
requirements. No modification is required. Modules are
interchangeable with round media cable bases. This
interchangeability provides plug and play block upgrade capability
and easy field replacement. The completely assembled ArmorBlock
module and base requires no enclosure.
These instructions describe the installation of each cable base. The
catalog numbers for the cable bases are:
• 1792D-CB12JP for 12mm drop cable installation, see page 5
• 1792D-CB18JP for 18mm trunk or drop cable installation, see
page 6
Publication 1792D-IN001B-EN-P - September 2000
42273CB12JP
2 ArmorBlock MaXum I/O Cable Bases DeviceNet Powered Outputs Series B
(Please note: ArmorBlock MaXum modules and flat or round media
cables are ordered and shipped separately.)
European Union Directive Compliance
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 50081-2 EMC - Generic Emission Standard, Part 2 Industrial Environment
• EN 50082-2 EMC - Generic Immunity Standard, Part 2 Industrial Environment
This product is intended for use in an industrial environment.
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
• Automation Systems Catalog, publication B113 Powering
Outputs Using DeviceNet Power
Publication 1792D-IN001B-EN-P - September 2000
ArmorBlock MaXum I/O Cable Bases DeviceNet Powered Outputs Series B 3
Powering Outputs Using DeviceNet Power
You can power some output devices from the DeviceNet network.
The application must allow the voltage to remain within the
DeviceNet specification limits of 11-25V dc. Most actuators need to be
powered by a separate power supply. They usually require more
power than is practically available from DeviceNet. Also, the large
voltage variation of 11-25V that DeviceNet allows is typically beyond
the range over which most available actuators or output devices can
safely operate.
You can use DeviceNet power to operate output devices such as
hydraulic and pneumatic solenoid valves, pilot and stack lights, and
motor starter coils with the following caution:
ATTENTION
!
Do not let DeviceNet voltage at the relevant
node exceed the output device’s acceptable
voltage range. Output devices rated 24V dc
rarely are specified to operate below 19.2V dc or
-20% of their 24V dc rating. Many only operate
down to 20.4V dc or -15% of the rated voltage.
This means that the DeviceNet network design
must not let the available voltage drop below
19.2 volts, for example, instead of the 11 volts
that the DeviceNet specification allows. This
higher lower voltage limit, which is within the
DeviceNet specification, will actually restrict the
distance of the DeviceNet network from what
would be possible if actuators were not utilizing
the DeviceNet power.
IMPORTANT
Design your network so that sufficient voltage is
available to operate the output device wherever it
is installed. This is especially important when it is
connected at the farthest location from the power
supply.
Publication 1792D-IN001B-EN-P - September 2000
4 ArmorBlock MaXum I/O Cable Bases DeviceNet Powered Outputs Series B
Noise or Transient Protection
The typical actuators used in DeviceNet control systems utilize
inductive coils that generate transients when de-energized. Each
ArmorBlock MaXum output contains a diode which is across the load
device coil. As a precaution, also use an MOV varistor suppressor at
the 24V dc coil.
ATTENTION
Do not use DeviceNet power on dc coil
actuators that use economizing coils to operate.
They have high inrush currents.
!
Package Contents for Cable Bases
Your package contains these installation instructions and the
following contents, depending on the base used:
1792D-CB12JP 1792D-CB18JP
one ArmorBlock 12mm cable base one ArmorBlock 18mm cable base
one 12mm protective cap two 18mm protective caps
(Please note: ArmorBlock MaXum modules are ordered and shipped
separately.)
Install Your ArmorBlock MaXum Cable Bases
To install the 1792-CB12JP and -CB18JP cable bases:
• Mount the cable base
• Attach the module to the base
• Attach the cables
These steps are discussed in the following procedures.
Publication 1792D-IN001B-EN-P - September 2000
ArmorBlock MaXum I/O Cable Bases DeviceNet Powered Outputs Series B 5
4
Mount the Cable Base
The cable base can be mounted either vertically or horizontally, using
3 screws. Cable bases accommodate 4 or 8 connector ArmorBlock
MaXum modules. You must allow additional space for installation of
8 connector ArmorBlock MaXum modules. They are longer than the 4
connector modules.
A mounting illustration for the 1792D-CB12JP is below.
1792D-CB12JP
1.90in.
48.18mm
When
installing a
cable base
with an 8
connector
module,
allow for
the
additional
length.
12mm
7.84in.
199mm
8 connector
module
0.60in.
15.3mm
1.10in.
28mm
5.71in.
145mm
4 connector
module
0.18in.
4.6mm
1.24in.
31.5mm
2.70in.
68.5mm
1.42in.
36mm
2.05in.
52mm
0.26in.
6.5mm
4.21in.
107mm
1.35in.
34.25mm
5.71in.
145mm
4227
Publication 1792D-IN001B-EN-P - September 2000
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