Vaisala DMT340 User Manual download pdf (Page 35)

Chapter 3 ________________________________________________________________ Installation

VAISALA ________________________________________________________________________ 33

1. Open the transmitter cover by taking out the four cover screws.

2. Insert the power supply wires and signal wires through the cable

bushing in the bottom of the transmitter; see the grounding

instructions in the previous sections.

3. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+,

Ch2-. Connect the RS-232 user port cables to terminals RxD, GND

and TxD. See section User Port Connection on page 83.

4. When wiring the optional modules, see the corresponding section

for instructions:

- RS-422/485 Interface on page 60

- Alarm Relays on page 58

- Third Analog Output on page 56

- LAN Interface on page 64

- WLAN Interface on page 65

5. Connect the power supply wires to the connectors: POWER

10...35V+ 24V

∼

(+) and (-) terminals. (If using AC voltage,

connect always phase to power supply (+) and 0 to power supply

(-)). When wiring the power supply module, see section Power

Supply Module on page 51.

6. Turn on the power. The indicator LED on the cover is lit

continuously during normal operation.

7. Close the cover and replace the cover screws. The transmitter is

ready for use.

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Vaisala DMT340 User Manual Page 35