Maple Systems HMI5000HD User Manual
Page 5
5
HMI5000HD Installation Guide
1010-1019 Rev 01 www.maplesystems.com
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 HMI may occur:
Connect the HMIs chassis ground terminal to a reliable earth ground
with a low-resistance path.
Route all earth ground wires that lead from the HMI, the PLC, 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 HMI chassis ground terminal to the control panel door using
a heavy-gauge short braided cable or ground wire to minimize resistance.