Vaisala DMT346 User Manual
Page 43
Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 43
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 77.
4.
When wiring the optional modules, see the corresponding section
for instructions:
- Installation and Wiring of RS-422/485 Interface on page 54
- Installation and Wiring of Alarm Relays on page 52
- Third Analog Output on page 50
- WLAN Interface on page 59
5.
Connect the power supply wires to the connectors:
POWER 10 ... 35 V = 24 V
∼ (+) and (–) terminals. ( If using AC
voltage, always connect phase (~) to power supply (+) and 0 to
power supply (–)
). When wiring the power supply module, see
section Power Supply Module on page 45.
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.