Grounding; I/O Signal Line Placement - Pro-face PS-3600G Series User Manual

PS-3600G Series User Manual
3.2.3

Grounding

This section describes the precautions for grounding the PS-G unit.
Do not use common grounding, since it can lead to an accident or machine breakdown.
(a) Exclusive Grounding (BEST)
PS-G Unit
(b) Common Grounding (OK)
PS-G Unit
(c)Common Grounding (Not OK)
PS-G Unit
3.2.4

I/O Signal Line Placement

• 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.
3-12
• When supplying power to the PS-G unit, be sure to
separate the input/output and power lines, as shown.
Other
[diagram (a)]
Equipment
Other
Equipment
• If exclusive grounding is not possible, use a common
Other
connection point. [diagram (b)]
Equipment
• Check that the grounding
resistance is less than 100Ω.
• FG and SG terminals are
internally connected in the PS-G.
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
2
than 2mm [0.0062inch
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.
• If the equipment does not function
properly when grounded, disconnect
the ground wire from the FG terminal.
2
].