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VESDA
5. Replace the terminal blocks in their correct positions.
2.9
Ground Connections
Effective grounding is crucial to ensure stable Modbus communications and to limit the effects of radio
frequency interference. Ground points are provided inside the back box. In order to prevent false readings or
alarms as a result of ground loops, ensure that the shield of all cables are grounded at a single point, preferably
at the controller. Consideration should also be given to how conduit, glands and the internal earth plate are
also grounded.
Note:
Any earth regime must avoid earth loops.
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VESDA Sensepoint XCL – Large Bore Installation Manual
15
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