Rockwell Automation 1425 PowerMonitor Wireless 250 - Manual (Page 22)

22 Rockwell Automation Publication 1425-UM001A-EN-P - January 2012
Chapter 2 Hardware Installation
PowerMonitor W250
Mounting
PowerMonitor W250 Location
Be aware of the location and orientation of the PowerMonitor W250 unit’s
internal antenna when selecting an installation location. The internal antenna
faces the front of the unit, in the upper left corner. The following sections provide
detailed recommendations for various installation conditions.
Basic Guidelines
To obtain the best effectiveness of the network, apply the following
recommendations:
• Avoid installing the PowerMonitor W250 unit in front of or close to
metallic parts. Doing so may reduce the efficiency of the embedded
antenna.
• Avoid installing the PowerMonitor W250 unit near sources of
electromagnetic induction.
• Refer to the illustrated layout for guidelines to optimize the orientation of
the antenna.
Inside a Metallic Cabinet
Typical electrical enclosures or cabinets are never completely sealed due to
openings and gaps. This permits a certain level of RF communication, although it
may be highly attenuated.
When the PowerMonitor W250 unit must be installed inside a metal enclosure,
to get the best effectiveness, the following guidelines apply:
• Avoid installing the PowerMonitor W250 unit in the center of the cabinet
where most electrical cables are located.
• Install the PowerMonitor W250 on one side, close to a door gap or
opening if any exist.
• If there are openings for cable routing in the top, bottom, or sides of the
enclosure, locate the PowerMonitor W250 unit close to these openings.
• Install a Router within 1 meter of the enclosure to counteract the
attenuation of the RF signal.
WARNING: Disconnect and lock out all sources of electric power to the location
in which the PowerMonitor W250 unit is to be installed and the circuit to which
it will be connected.
WARNING: The PowerMonitor W250 unit must be installed vertically as shown
in
Figure 16 .