Pro-face PS-4000B Series, User Manual

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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

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

Use only the authorized grounding configurations shown below.

Confirm that the grounding resistance is 100

or less.

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