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PRESYS
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Instruments
2.3 - Process Input Signal Connections
Pressure inputs 1and 2 (optional), shown in figure 3, require pneumatic /
hydraulic connection with junction for 1/4" plastic tube for use with air or 1/4" NPTF
for use with other fluids.
The single pressure version of the Controller accepts connection to
thermocouples, 2 or 3-wire RTDs, mA, mV or V. In order to know the input sensor
types and spans 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 cross sensor
connection wire inside a metallic tube or use shielded cable. Make sure to connect
only one shield wire end either to board terminal or to sensor ground, as shown in the
next items.
WARNING: GROUNDING TWO SHIELD WIRE ENDS MAY CAUSE NOISE IN THE
CONTROLLER.
DCY - 2057 Pressure Controller
Fig. 3 - DCY-2057 Controller Terminals
Installation
Page 9
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