Wiring guidelines

To avoid injury, you should follow specific guidelines when you wire a appliance.

• Wiring must be installed by someone who has been trained to wire the system.
• To avoid electrostatic discharge (ESD) damage when installing third-party hardware, follow the manufacturer's requirements for the use of anti-static devices such as ESD wrist straps.
• Grounding and cabling must comply with your Local Electrical Code or National Electrical Code.
• For RS-485 shielding, have ONE device providing ground (connect the shield to a single location, preferably to the primary device). This provides a return path for common mode noise, and avoids DC ground loop current flow.
• When running the RS-485 bus between enclosures, only ground one end of the cable. When running the RS-485 bus within the enclosure, you can ground one end, or both ends of the cable.