Dgtp Model - Vetek DGT Technical Manual

2.3 DGTP Model

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 through the CELL1 terminal board or the CELL1, CELL2, CELL3,
CELL4 connector 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), or
simply 4-wire; for this, through jumper J3 and J4 (normaly closed) it is possible to choose whether to short-circuit the
SENSE with the POWER SUPPLY (jumpers closed) or not (jumpers open).
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.
The 4-pin CELL1, CELL2, CELL3 e CELL4 connectors instead allow just the 4-wire connection.
6-WIRE CONNECTION
• If one wants to use 4 wires in the CELL 1 terminal board or in the C1 connector (without using the SENSE
signal), one should short-circuiting - SEN with -EXC and +SEN with +EXC by closing the J3 and J4 jumpers.
• 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 J3 and J4 jumpers.
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 J3 and J4 jumpers.
!! IMPORTANT !!
6
DGT / DGT60 / DGTQ / DGTP
4-WIRE CONNECTION