Delta OHM HD32MT.3, Operating Manual

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HD32MT.3
- 13 -
V1.2
Terminal
number
Function
28 First pole of sensor output contact
29 Second pole of sensor output contact
0 is recorded if contact is closed, 1 if contact is open.
10. 17…26 Vdc voltage input. A solar panel or the optional external AC/DC supply unit
HD32MT.SWD can be connected to the input.
Terminal
number
Function
30 Positive power supply
31 Negative power supply
11. Input for the connection of a 12 V rechargeable backup battery.
Terminal
number
Function
32 Positive backup battery
33 Negative backup battery
12. Jumper JP5 to place a pull-up resistor between terminals 20 (E) and 21 (SGN) of the cup
anemometer input. The resistor is placed when the jumper is closed. Close the jumper
when a contact or Open-Collector output anemometer is connected. Leave the jumper
open when an analog output signal anemometer is connected (for ex. HD54.3 with sinus-
oidal output signal).
13. Dip switch for the selection of 1 V or 10 V full scale values for analog inputs. Each dip
switch (A, B, C) corresponds to an analog input (INA, INB, INC). Place the corresponding
dip switch downwards or upwards respectively to set 1 V or 10 V full scale values for an
analog input. If an analog input works as current input (JPA, JPB or JPC jumpers closed),
the corresponding dip switch must be set to 1 V.
14. Jumpers for the selection of current or voltage modes for the analog inputs. Each jumper
(JPA, JPB, JPC) corresponds to an analog input (INA, INB, INC). INx input (x=A,B,C)
works as voltage input if JPx jumper is left open. INx input operates as current input if
JPx jumper is closed (an internal 50

shunt resistor is added). Voltage inputs accept
0...1 V or 0...10 V fields according to the dip switch setting (step 12). Current inputs al-
ways accept 0...20 mA fields and dip switches must be set to 1 V.
15. Terminals for the connection of GSM/UMTS modules. This connection supports RS232 se-
rial port.
Terminal
number
Function
34 Rx
35 Tx
36 DTR
37 GND
38 RTS
39 CTS
40 RI
41 +Vsw3 (module positive power supply)
42 GND (module negative power supply)