Micromod Micro-DCI: 53MC5000 PLC AND PRINTER INTERFACES - Manual (Page 22)

GROUNDING
Installations are expected to have access to a high quality, noise-free
point of earth reference. Connection should be through a low
resistance (less than one ohm) lead wire directly to the installation’s
point of earth reference which can be an independent grounding rod or
ground grid mesh that penetrates the permanent moisture level below
the frost line in accordance with Article 250 of ANSI/NFPA 70, the
National Electrical Code, or other code(s) acceptable to the authority
having jurisdiction over the installation.
COMMON BUS BAR
Use of a common bus bar that is connected to the earth ground through
a low resistance (less than one ohm) lead wire is recommended to
minimize potential voltage differences that may occur as a result of
ground loops, e.g., potential differences between separate power
grounds, signal grounds, etc.
METAL CONDUIT
In noisy locations, the power wiring should be enclosed in metal
electrical conduit and not routed in close proximity to signal wiring.
53MC9015 53MC5000 PLC and Printer Interfaces
2-4
INSTALL