19
ICC
The gateway is provided with a “chassis GND” terminal adjacent to the RS-485
terminal block. The “chassis GND” terminal is internally connected through a
parallel R-C to the shield connection on the DeviceNet connector (as detailed in
the DeviceNet specification). For optimal EMI performance, it is recommended
to connect this chassis GND terminal to an appropriate protective ground.
Please be sure to consider the following general points for making proper ground
connections:
Grounding method checkpoints
1. Make all ground connections such that no ground current flows through the
case or heatsink of a connected electrical device.
2. Do not connect the chassis GND terminal to a power ground or any other
potential noise-producing ground connection (such as an adjustable-speed
drive’s “E” terminal).
3. Do not make connections to unstable grounds (paint-coated screw heads,
grounds that are subjected to inductive noise, etc.)
