PRESYS
Instruments
DMY-2030-TOT
Light
Installation
Page 7
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.
Fig. 3 - Indicator Terminals
2.3 - Process Input Signal Connection
The Indicator input can be connected to current (mA) or voltage (V or mV).
See the different types and ranges of input sensors in table 1, section 1.3 on
Technical Specifications.
The input sensor is enabled by internal jumpers (see section 4.2 on
Hardware Configuration) and by selection of the sensor in the software (see
section 3.2 on Configuration). The connections explained below will have the
desired result only if the instrument is correctly configured by software and
hardware.
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
INDICATOR.
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