Maple Systems Windows Embedded CE 6.0 Pro Edition - Manual (Page 5)

1010-1017 Rev. 00 5
Figure 1: Typical Panel Layout
Control Panel Grounding
The control panel must be connected to a good, high-integrity earth
ground both for safety considerations and shielding purposes. Maple
Systems cannot overemphasize the importance of good grounding. If you
fail to use good grounding procedures during installation, sporadic
malfunction of the OMI may occur:
Connect the OMIs chassis ground terminal to a reliable earth ground
with a low-resistance path.
Route all earth ground wires that lead from the OMI, the power supply,
and the line filter to a central earth ground point such as a barrier strip.
This will ensure that no ground current from one device influences the
operation of the other devices.
Connect the OMI chassis ground terminal to the control panel door using
a heavy-gauge short braided cable or ground wire to minimize resistance.
Connect the power cable’s shield wire to the OMI’s chassis ground terminal.
Connect the control panel to earth ground using a copper grounding rod
close to the OMI and control panel.
Hinged doors on control panels do not provide a long-term electrical
connection to the rest of the enclosure. Corrosion develops over time and
prevents good electrical contact. For this reason, a separate wire braid
should be installed from the hinged control panel to the rest of the
enclosure.
For a more in-depth overview of ground wiring techniques, refer to
OMI5000
(rear side)
OMI
Power
Supply
OMI is