19
•
Be sure to create an exclusive ground for the power cord’s FG terminal. Check that the grounding
resistance is less than 100
Ω
.
•
Inside the PS-G unit, the SG (Signal Ground) and FG (Frame Ground) terminals are connected.
When connecting an external device to the PS-G using the SG terminal, be sure to check that no
short-circuit loop is created when you setup the system.
•
The grounding wire should have a cross sectional area greater than 2mm
2
[0.0062inch
2
]. Create
the connection point as close to the PS-G unit as possible, and make the wire as short, as possible.
When using a long grounding wire, replace the thin wire with a thicker wire, and place it in a
duct.
•
Input and output signal lines must be separated from the power control cables for operating
circuits.
•
If this is not possible, use a shielded cable and connect the shield to the PS-G unit’s frame.
4
Grounding Cautions
5
Input/Output Signal Line Cautions
Exclusive Grounding
(BEST)
Common Grounding
(OK)
Common Grounding
(Not OK)
PS-G
Unit
PS-G
Unit
PS-G
Unit
Other
Equipment
Other
Equipment
Other
Equipment
