Fairbanks Trident Precast Concrete Deck Truck Scale User Manual

Page 27

Section 4: Installing Accessories

04/11

51255 Rev. 2

C. Wiring SSCs and PPSs 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
There is one (1) SSC per section and one (1) PPS for the entire platform unless

the number and resistance of the cells require a second pit power supply. 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. All cell,

section, and scale adjustments are made via the IntalogixTM system instrument.

3. Installation
a. Boxes – The box has tabs for bolting to adapters as shown in “Installing load

cells.”

b. 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, or use Appendix III to connect PPSes and SSCs.

D. 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.

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 platform 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.