Fairbanks 6020 Titan Series - Manual (Page 12)

d. Grounding - Smart Sectional Controllers
Intalogix™ systems must have two (2) ground rods in the pit for proper connection.
Pit power supplies use a ground separate from the weighbridge and sectional
controller ground rod. For accurate operation and protection against damage from
lightning strikes, all of the components of the system must be properly grounded.
The grounding system contains ground rods for the scale pit location. The following
steps must be taken to correctly ground the system:
1. It is recommended that the grounding be done with 8 AWG or larger wire or braided
ground straps.
2. All of the ground connections should be 2 feet or as short as possible.
3. The case of the SSCs and PPSs must be attached in a clean electrical connection
to the platform frame. The platform frame is then connected to a pit ground rod.
4. The insulated WHITE wire from the PPS connects directly to the separate ground
rod (not to the same rod as the weighbridge).
5. The 117 VAC SVP unit must be connected to a known good ground at the
instrument location. Use a voltmeter to test the electrical power source available
for the Neutral-to-Ground voltage level; it must be 0.2 VAC or less. If you are
unsure, or if the testing reveals a higher than acceptable level (0.2 VAC maximum),
make provisions to install a separate ground rod at the SVP location. Use braided
cable or 8 AWG wire to make the SVP to ground rod connection.
e. Indicator to Pit Power Supply Cable Connection
Prepare the cable ends in the standard manner. Use the appropriate manual for
wiring instructions for the sectional controllers and power supplies. Connect the
indicator interface cable to the instrument in the scale house per the instructions in
the appropriate indicator service manual.
Caution: Improper grounding will prevent the surge voltage protection from adequately
protecting the scale.
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