Connecting Field Devices To An Analog Output Module; Danger Of Creating Ground Loops; Connection Of Actuators For Signal Cables Longer Than 10 Meters (32.8 Ft) - GE VersaPoint IC220PBI002 User Manual

Connecting Field Devices to an Analog Output Module

For maximum noise immunity, always connect analog actuators with shielded,
twisted-pair cables. For an analog output module:
▪
Connect the shield to the shield connector as described previously.
▪
When connecting the shield with FE potential, ensure a large surface
connection.

Danger of creating ground loops!

The shielding must be directly connected with ground potential at only one point.
For cable lengths exceeding 10 meters (32.8 ft.) the actuator side should
always be isolated by means of an RC element.
▪
The capacitor C should typically have values of 1nF to 15nF.
▪
The resistor R should be at least 10MΩ.

Connection of actuators for Signal Cables Longer than 10 Meters (32.8 Ft)

GFK-1911B Chapter 4 Installation
A Module side B Actuator side
4
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