Vetek DGT, Technical Manual

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DGT / DGT60 / DGTQ / DGTP
4
2. CONNECTION TO THE LOAD RECEIVER
2.1 DGT and DGT60 Models
After having followed the instructions regarding the platform or the load receiver, the screened cable leading from the
load cell(s) must be connected to the instrument terminal board(s) (from CELL1 up to CELL4, see paragraph 11
"CONNECTION SCHEME") through the relative input(s) ( see paragraph "INSTALLATION",
USER MAN. REF.) .
The CELL1 terminal board of the indicator may be connected to the 6-wire load receiver (with use of SENSE),
instead for CELL2, CELL3 and CELL4 it’s allowed only the 4-wire connection.
The sense allows compensating for any drops in voltage in the part of the cable that connects the instrument to the
transducer. It is useful when the distance between the indicator and the transducer is greater than 10 m.
!! IMPORTANT !!
•
If one wants to use 4 wires in the CELL 1 terminal board (without using the SENSE signal), one should short-
circuit -SEN with -EXC and +SEN with +EXC.
•
When there are 6-wire cells:
1.
the SENSE is managed exclusively in systems with just one cell, connected to the CELL1 terminal board; in
these applications, open the J1 and J2 jumpers (Mod. DGTQ)
2.
in sistems with various cells, the SENSE is not managed, therefore for each cell:
- Shortcircuit the +SENSE wire with the +EXC wire and the –SENSE wire with the –EXC wire; otherwise one
may leave the SENSE wires unconnected.
- Close the J1 and J2 jumpers.
4-WIRE CONNECTION 6-WIRE CONNECTION