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PRESYS
⏐ Instruments
Input and output signals must be connected to the instrument only when it is
turned off.
Figure 3 shows the instrument rear terminals for connection of power supply,
ground, communication, process input and output signals.
Signal wiring must be kept far away from power wires.
Due to its metal case the instrument ground should be connected to earth ground.
Never connect the ground to neutral terminal.
2.3 - Process Input Signal Connection
The
DCY-2058
connection to mA or V in their standard inputs. In order to know the input sensor types
and ranges refer to table 1, section 1.3 on Technical Specifications.
A certain type of input sensor is enabled by means of internal jumpers (refer
to section 4.2 on Hardware Configuration) and by the proper sensor selection in
configuration mode (refer to section 3.2 on Configuration). Therefore, the
connections explained below shall only become effective if the instrument
hardware and software are correctly configured.
The connection of a certain type of sensor in input 1 does not restrict the
simultaneous use of other sensor, of the same type or different, in input 2.
In order to avoid noise in the wiring, use twisted pair cable and pass sensor
connection wires inside a metallic tube or use shielded cable. Make sure to connect only
one shield wire end either to the negative terminal or to the earth ground of the sensor,
as shown in the next sections.
WARNING: GROUNDING TWO SHIELD WIRE ENDS MAY CAUSE NOISE IN THE
INSTRUMENT.
Fig. 3 - DCY-2058 and 2059 Station Terminals
and
2059
Auto-Manual / Auto / Manual
DCY-2058 and DCY-2059
Stations
Installation
accept
Page 5
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