Fairbanks 9104 FB Omnicell - Manual (Page 19)

Section 4: Electrical Installation
07/13 19 51325 Rev. 1
4.2. WIRING FOR INTALOGIX™ SYSTEMS
1. Introduction – Intalogix™ systems utilize smart sectional controllers (SSCs)
and pit power supplies (PPSes) for load cell excitation and signal processing.
2. Description – SSC boxes have four (4) terminals, two (2) for load cells, and
two (2) for interconnecting to other SSC boxes or terminating to a pit power
supply. Make sure the proper number of SSC boxes are order based on the
application requirements. All cell and scale adjustments are made via the
Intalogix™ system instrument.
3. Installation – Boxes: The box has tabs for bolting to adapters on the side
of the modules. Wiring: Cable used in all wiring must be a minimum of 18
AWG. Use cable 17204 or 17246. Use appropriate service manual for the
instrument being installed.
a. Smart Sectional Controller – Wire cells into each section’s SSC per the
appropriate manual. Remember that odd numbered cells go to TB1 location,
and even numbered cells go to TB2 location. Load cell drain wires connect to
the ground lug on the sectional controller box exterior.
b. Grounding SSCs – Intalogix™ systems must have two (2) ground rods in the
pit for proper connection. Pit power supplies use a ground separate from the
steel and SSC ground rod.
c. Instrument-to-PPS cable connection – Prepare the cable ends in the
standard manner. Use the appropriate manual for wiring instructions of all
SSCs and pit power supplies. Connect the instrument interface cable to the
instrument in the in the scale house per the instructions in the appropriate
instrument service manual.
NOTE: Intalogix™ installations utilize a different numbering system for load cells
because of digital addressing of the SSCs. Number the load cells as follows:
With respect to the following starting position, face the vessel from where the
instrument is located.
The cell at the upper left (far side) of the platform is Cell 1.
The cell positions along the far side will be odd cell number, and the near side
locations will be even cell numbers.
NOTE: SSCs have connections for two (2) load cells, TB1 and TB2. The odd-
numbered cell should go to the TB1 connection, and the even-numbered cell to
the TB2 connection.