Gasboy FuelOmat system 8 Popt Commverter - Manual (Page 96)

4.4. GROUNDING THE COMMVERTER
4.4.1. General
The CommVerter must be grounded for safety and protection, once installed. This requirement is
achieved by grounding the RS-485 connector of the external communication cable.
4.4.2. Grounding – General Concept
The shields of the density probes, density displays, Tag Readers and pumps (RS-485) are looped to
the Earth of the FCC enclosure.
In order to connect the 8-port Commverter with the Earth of the FCC enclosure, it is enough to loop
only one of the shield pins of the enclosure with the Earth pins at the 8-port Commverter RS-485
connector.
4.4.3. Grounding the 8-port Commverter (without RS485 card)
Proceed as follows:
2. Make a wire loop between pin 3 and pin 4 (see Figure 4-1) in the RS-485 input
connector of channels 1 and 2
3. Use at least 1 mm of yellow-green wire
4. Use a separate lug for each wire-end inside the port.
Figure 4-1. CommVerter Unit – Grounding Cable in RS-485 Connector
8 Port CommVerter Operation and Installation Manual 92