Delta OHM HD32MT.3, Руководство по эксплуатации

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HD32MT.3
- 12 -
V1.2
INx input (x=A,B,C) works as voltage input if JPx jumper (step 14) is left open. INx input
works as current input if JPx jumper is closed (an internal 50

shunt resistor is added). For
voltage inputs, select 1 V or 10 V full scale values through the dip switches (step 13). For
current inputs, dip switches must be set to 1 V.
6. "CUP WIND SPEED" input for the connection of cup anemometer HD54.3 or of a cup ane-
mometer with contact or Open-Collector output.
Terminal
number
Function
20 Anemometer positive power supply
21 Anemometer output signal
22 GND
For anemometers with contact or Open-Collector output, close the JP5 jumper (step 12) to
add a pull-up resistor between terminals 20 and 21.
Connection of non powered
anemometer with
sinusoidal output signal
(HD54.3)
Connection of non powered
anemometer with
contact output
Connection of powered
anemometer with
Open Collector output
Fig. 3.2: connection of different types of cup anemometers
7. "POTENTIOMETER" input for the connection of a potentiometric sensor, for example the
wind direction vane sensor HD54.D.
Terminal
number
Function
23 Potentiometer excitation voltage
24 Potentiometer cursor
25 GND
8. "RAIN GAUGE " input for the connection of a rain gauge with potential-free contact output.
Terminal
number
Function
26 First pole of the rain gauge output contact
27 Second pole of the rain gauge output contact
9. Input "SW IN" for the connection of the sensor (with potential-free contact output) for sig-
nalling the opening of the case cover.