User manual VAISALA WAC155

[. . . ] USER'S GUIDE Vaisala Serial Wind Transmitter WAC155 M210822EN-A PUBLISHED BY Vaisala Oyj P. O. Box 26 FIN-00421 Helsinki Finland Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2007 No part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. [. . . ] 1 2 3 4 5 6 7 8 = = = = = = = = WAA151 Cup assembly WAV151 Tail assembly Cross arm WAC155 Connector Mounting flange South North Alignment After mounting the WAC155 transmitter to the mast, check that the WAV151 end of the cross arm is pointing to north with the required accuracy, see Figure 17 on page 28. To ensure a correct assembly after aligning the WAC155, you can mount the sensors on it only in one way. VAISALA _______________________________________________________________________ 29 User's Guide ______________________________________________________________________ Verification Monitor the status indicator LED when powering up the WAC155 transmitter. The LED will flash green if the self-diagnostics are completed without errors, and red if there is an error condition. An error condition may be caused by an erroneous installation, configuration, or a combination of both. For example, enabling sensor heating without connecting the heating power will cause an error state. You may be able to diagnose the problem using the service connection. Howerver, if the problem is with the operating power, the service connection may not be available even if the LED is flashing. If the signal cable from the WAC155 transmitter is connected to a data collection system and the system is powered up, check that the wind readings react correctly. For testing the anemometer, rotate the cups manually. For testing the wind vane, hold the vane in a few fixed angles and verify the data. 30 ___________________________________________________________________M210822EN-A Chapter 4 ________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter contains information that is needed to operate the Vaisala Serial Wind Transmitter WAC155. User Interface The WAC155 does not provide a direct user interface, except for a status indicator LED on the component board. The LED will flash green when the operational status is OK, and red when there is an error condition. The LED is activated for five minutes after the transmitter is powered up. The LED is also activated when the service connection is open. The red LED does not indicate the type of the error. Service personnel must connect to the service connection to resolve the problem. Data and service connections are provided over the RS-485 interface. These connections are described in the next section. Communication Interfaces The WAC155 transmitter communicates over a half-duplex RS-485 interface. The WAC155 can be configured to send wind data messages at regular intervals (auto-transmit mode), and it can provide the data as a response to an MWV query. The data is provided in standard NMEA wind speed and angle messages. In addition, a service interface is available for configuration and status information. VAISALA _______________________________________________________________________ 31 User's Guide ______________________________________________________________________ More than one transmitter can be connected to a single RS-485 bus. In the case of single transmitter, the auto-transmit mode can be used (the device transmits data messages with configured interval). If there are several transmitters in the same bus, auto-transmission may not be enabled, and data can be only polled by query. [. . . ] Check and correct using the service connection. Check wiring and tighten the screw terminals. Check and correct using the service connection. Check that the power supply is online. Shaft heating of the sensors is not working. Heating power is not connected properly. [. . . ]