User manual

PS-2000B Series User Manual

Chapter 2 – Hardware Installation

2–13

• As the countermeasures for surge from light-

ning, connect a lightning surge absorber.

PS-B

Twisted-pair cable

Lightning surge ab-

sorber

2.3.3 Grounding Precautions

(a) Dedicated Ground: Optimal

• Designate the ground from the FG terminal

on the rear face of the PS-B as a dedicated

ground as illustrated in figure (a).

(b) Shared Ground: Acceptable

• If a dedicated ground cannot be provided,

use a shared ground as illustrated in figure

(b).

• Be sure to use grounding wire of 2 mm

thicker. The grounding point should be as

close to the PS-B as possible to make the

grounding wires as short as possible. When

the grounding wire should be long, use

thick, insulated wires and lay the wires

through conduits.

• FG and SG are connected inside the PS-B

main unit. When connecting with other

device, designate the system configuration

so that it won't form a SG short-circuit loop.

PS-B

Another

device

Type-D Ground

PS-B

Another

device

Type-D Ground

PS-B

Another

device

• Ground the lightning surge absorber (E1) and the PS-B (E2) sepa-

rately

• Select a lightning surge absorber that will not exceed the maximum

allowable circuit voltage, even when the power supply voltage rises

to the maximum.