Proface PS4800 - 19 Panel PC" - Manual (Page 64)

PS-4000B Series User Manual
64
Grounding
Overview
The grounding resistance between the PS-B unit’s Functional Ground (FG) and
Ground must be 100
Ω or less. When using a long grounding wire, check the
resistance and if required replace a thin wire with a thicker wire and place it in a duct.
In addition, please refer to the table below for maximum line lengths for various wire
thicknesses.
Ground Wire Dimensions
Precaution
Dedicated Ground
Connect the Functional Ground (FG) to a dedicated ground.
Shared Ground Allowed
If a dedicated ground is not possible, use a shared ground, as shown.
Wire Thickness Maximum Line Length
2.5 mm 2 (13 AWG)
30 m (98 ft.)
60 m (196 ft.) round trip.
WARNING
UNINTENDED EQUIPMENT OPERATION
z Use only the authorized grounding configurations shown below.
z Confirm that the grounding resistance is 100
Ω or less.
z Test the quality of your ground connection before applying power to the device.
Excess noise on the ground line can disrupt PS-B unit's operations.
Failure to follow these instructions can result in death, serious injury, or
equipment damage.
Other
Device
Other
Device
PS-B unit