Proface PS4800 - 19 Panel PC" - Manual (Page 62)

Industrial Personal Computer Connections
62
Grounding Procedure
The Industrial Personal Computer ground has 2 connections:
 DC Supply voltage (see page 65) or AC Supply voltage (see page 67)
 Ground connection pin
1 Ground connection pin (functional earth connection pin)
2 Supply voltage
3 Grounding strip
4 Switching cabinet
When grounding, follow the procedure below:
Step Action
1 Check that the grounding resistance is 100
 or less.
2 When connecting the SG line to another device, ensure that the design of the
system/connection does not produce a ground loop.
NOTE: The SG and ground connection screw are connected internally in the
Industrial Personal Computer.
3
Use 2.5 mm
2
(AWG 13) wire to make the ground connection. Create the connec-
tion point as close to the Industrial Personal Computer as possible and make the
wire as short as possible.