Maple Systems HMI5000L Series - Manual (Page 10)

10 HMI5000L Installation Guide
1010-1018 Rev 01 www.maplesystems.com
frequency noise present, we also recommend using a resistor (~1 MΩ)
and capacitor (~4700 pF) in parallel to clean earth ground on the DC
output of the power supply.
Do not use the power supply used to provide power to the HMI to power
switching relays, solenoids, or other active devices.
Figure 3: Power Line Filter Connection
Cable Routing and Noise Immunity
Follow these guidelines when routing cables to the HMI:

Always route the HMI communication cable and the power cable
away from any AC voltage or rapidly switching DC control
lines.

Never bundle the HMI cables together with 120VAC power
wires or with relay wiring.

Try to keep at least 8 inches (20 cm) of separation between the
HMI cables and other power wiring. If voltages greater than
120VAC are used in the system, greater separation is required.

If the HMI cables must come near AC wiring, make sure they
cross at 90 degrees.