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Chapter 4_________________________________________________________________ Installation
Connections
VAISALA ________________________________________________________________________ 45
Verification
Before connecting PWD22 to a weather station or other host, a short
startup procedure is recommended.
1.
Connect a terminal via RS-232 serial line to the sensor.
2.
Set the terminal baud rate to 9600 bps and the data frame to
contain 7 data bits, 1 stop bit, even parity.
3.
Switch the power supply on.
4.
After startup, the PWD22 output is the following:
VAISALA PWD22 V x.xx YYYY-MM-DD SN:XXXXXX
(ID is also included, if configured, e.g., in the following way:
VAISALA PWD22 V x.xx YYYY-MM-DD SN:XXXXXX ID
)
STRING: 1
If not, check the cabling and baud rate of the service terminal
(program). If wrong characters are shown, try other baud rates,
such as, 300, 1200, 2400, and 4800.
5.
Wait for 20 seconds and enter into the command mode with the
OPEN command. Check with the STA command that no
hardware errors or warnings are detected
6.
Leave the command mode by typing CLOSE and check that the
automatic message appears in the display, if it was not disabled.
Other commands are described in Chapter 5, Operation, on page 55.
Connecting Cables
The PWD22 enclosure is equipped with a connector for connecting
signal and power cable. The connector enables easy installation and
maintenance actions. The cable shield and connector is grounded to
the PWD22 enclosure in order to keep EMI levels within the
specifications
Insulate the unused wires of the PWD22 mast cable from each other,
for example, by connecting them to void screw terminals in the
junction box.
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Table of Contents
Troubleshooting
