Panasonic FPS Series, Руководство пользователя

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FP Σ User's Manual
6.3 Wiring the Power Supply
81
Example 2:
Do not ground the function earth terminal of the FP Σ when grounding a plus terminal (+) of the
power supply.
In some computers, the SG terminal of the RS232C port is connected with the connector
shielding. Also, the FP
Σ TOOL port shielding is connected with the function earth terminal
(PE). Therefore, the GND and function earth terminals of the FP Σ are connected if the
computer is connected. Especially when the FP Σ is connected to a computer with a plus
terminal (+) grounded, the minus terminal (-) of an FP Σ is connected with the function earth
terminal. A resulting short circuit may damage the FP Σ and its neighboring parts.
SG SG
24V
0V
GND
PE
1
2
1
A
B
C
A Power supply
1
Shielding
B
CPU
2
Cable
C Computer