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Chapter 2 Hardware Installation
2-19
2.3.3 Grounding Cautions
(a) Dedicated Ground *1
• Set up a dedicated ground when using the
rear panel’s FG terminal.
(b) Shared Ground - allowed *1
• If a dedicated ground is not possible, use a
shared ground, as shown in figure.
• Inside the PS-A unit, the SG (Signal
Ground) and FG (Frame Ground) terminals
are connected to each other.
(c) Shared ground - not allowed
• When connecting an external device to PS-
A with the SG terminal, ensure that no
short-circuit loop is created when you set
up the system.
• The grounding point must be as close to
the PS-A as possible, and the grounding
wires must be as short as possible. If the
wires must be long, use thick, insulated
wires and run them through conduits.
2.3.4 Cautions When Connecting I/O Signal Lines
• I/O signal lines must be wired separately from the power circuit cable. If the power circuit cable needs to
be wired together with the input/output (I/O) signal lines for any reason, use shielded cables and ground
one end of the shield to the PS-A’s FG terminal.
• To improve noise immunity, it is recommended to attach a ferrite core to the power cord.
*1 Use a grounding resistance of 100
Ω
or less, and a 2 mm
2
or thicker wire, or your country’s applicable
standard. For details, contact your local PS-A distributor.
Other device PS-A
Other device PS-A
Other device PS-A