Example Configuration; Division 2 Application Example Using Powercell Pdx Load Cells - Mettler Toledo IND780 Guia De Instalacion

The other (primary) terminal receives the SICS data from the secondary terminal and adds it to the
output of its own PDX scale, using SUM scale. The SUM scale result gives the total weight recorded
by all PDX cells.
2.7.1.

Example Configuration

24 load cell system with 12 cells on platform 1, 12 cells on platform 2
2.7.1.1. Secondary IND780 connected to platform 2
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2.7.1.2. Primary IND780 connected to platform 1
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2.8. Division 2 Application Example Using POWERCELL
PDX Load Cells
The following is an example of applying the IND780 terminal with PDX Option in a Division 2
application connecting a scale based on model SLC820 POWERCELL PDX digital load cells with
50 feet of load cell cable. The field circuit parameters for all devices and cables in the load cell line
must be known.
64063214 | 07 | 02/2018
The two terminal system is always bound to the same rules as the single scale system shown
in dark blue in Table 2-1. In this example, for 12 cells each home run cable must be no longer
than 130m (427ft) in length and the cell-to-cell cable length for each terminal network must be
no longer than 109m (358ft). For each PDX network, from each terminal the total cable length
(home run cable plus cell-to-cell cables) must be no longer than 303m (994ft).
Scale 1 is configured as a PDX scale
Com1 is configured under CONNECTIONS as a SICS output associated with Scale 1
Scale 1 is configured as a PDX scale
Scale 2 is configured as a SICS scale associated with a COM1; the serial cable from the
secondary terminal must be attached to the primary terminal's COM1 port
Configure a SUM scale to add Scale 1 and Scale 2. The primary terminal displays the result of
the sum of all PDX cells
Terminal model: IND780 terminal PDX Option (Division 2 approved)
Base model: VTC221 Concrete Deck (with approved cells)
Load cell model: METTLER TOLEDO SLC820 POWERCELL PDX
N of load cells: 10
Load cell cable length: 600 feet
METTLER TOLEDO IND780 Division 2 and Zone 2/22 Installation Guide 2-11