Process Input Signal Connections - Presys DMY-2030-F Technical Manual

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 Connections

The Indicators accept the connection of pulses with amplitude between 300 mV
and 30 V or contact closures to the frequency inputs.
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The contact closure input is enabled by internal jumper (see section 4.2 on
Hardware Configuration).
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
section.
WARNING: GROUNDING TWO SHIELD WIRE ENDS MAY CAUSE NOISE IN THE
INDICATOR.
Installation
Page 6
NEUTRAL PHASE
23 ( )
24Vdc/
+
24 ( )
12Vdc
Fig. 3 - Indicator terminals
DMY-2030-F / DMY-2030-F Light
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