Vaisala WMT52 Manuel d'utilisateur Page 115
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Chapter 10 __________________________________________________________ Troubleshooting
VAISALA______________________________________________________________________ 113
Wind Sensor Heating Control
The supervisor message aSU (see Supervisor Message on page 101)
shows you continuously monitored information about wind sensor
heating (heating temperature Th and heating voltage Vh).
The heating temperature should stay above 0 °C when the heating is on
(except in extremely cold conditions where the heating power is not
sufficient). The heating voltage Vh should correspond to the heating
voltage supplied. If there is a remarkable deviation, check the wiring.
Note that wire gauge needs to be large enough to avoid remarkable
voltage drop in the cable.
Operating Voltage Control
The supervisor message aSU (see Supervisor Message on page 101)
shows you continuously monitored supply voltage level (Vs). In case of
deviations between the supplied voltage and monitored voltage, check
the wiring and the power supply.
Technical Support
NOTE
In case AC or full-wave rectified AC is used for the heating, the Vh
measurement behaves as follows:
While heating is off, Vh indicates the positive peak value (Vp) of the
heating voltage waveform.
While heating is on, Vh indicates:
- 0.35 x Vp in case of AC voltage
- 0.70 x Vp in case of full-wave rectified AC voltage
For technical questions, contact the Vaisala technical support:
E-mail [email protected]
Fax +358 9 8949 2790
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 5 4
- CHAPTER 6 4
- CHAPTER 7 4
- CHAPTER 8 5
- CHAPTER 9 5
- CHAPTER 10 5
- CHAPTER 11 5
- APPENDIX A 6
- APPENDIX B 6
- APPENDIX C 6
- APPENDIX D 6
- APPENDIX E 6
- List of Figures 7
- List of Tables 9
- GENERAL INFORMATION 11
- General Safety Considerations 12
- Feedback 13
- ESD Protection 13
- Recycling 13
- Trademarks 14
- License Agreement 14
- Regulatory Compliance 14
- Warranty 15
- PRODUCT OVERVIEW 17
- Heating Function 18
- 0803-041 19
- 0803-029 20
- 0804-007 22
- FUNCTIONAL DESCRIPTION 25
- 0.5 L 1 t 26
- Heating (Optional) 27
- INSTALLATION 29
- Selecting the Location 30
- 0806-005 31
- 0803-043 33
- 0803-044 35
- 0803-042 35
- Marine Grounding Jumper 37
- Aligning the WMT52 38
- Wind Direction Offset 39
- WIRING AND POWER MANAGEMENT 41
- Heating Voltage 42
- External Wiring 44
- Internal Wiring 45
- 0803-035 46
- Data Communication Interfaces 48
- Power Management 49
- CONNECTION OPTIONS 53
- Connection cables 54
- Service Cable Connection 56
- Connector or Screw Terminal 57
- Checking the Current 58
- Communication Settings (aXU) 58
- Changing the Communication 61
- Settings (aXU) 61
- GETTING THE DATA MESSAGES 63
- General Commands 64
- Reset (aXZ) 64
- Measurement Reset (aXZM) 65
- ASCII Protocol 66
- Abbreviations and Units 66
- Device Address (?) 66
- Wind Data Message (aR1) 68
- Supervisor Data Message (aR5) 69
- Combined Data Message (aR) 70
- Composite Data Message Query 70
- Polling with CRC 71
- Automatic Mode 72
- Automatic Composite Data 73
- Message (aR0) 73
- SDI-12 Protocol 73
- Address Query Command (?) 74
- Change Address Command (aAb) 75
- CRC (aMC) 78
- CRC (aCC) 79
- Send Data Command (aD) 80
- Examples of aM, aC and aD 81
- Commands 81
- Continuous Measurement (aR) 82
- NMEA 0183 V3.0 Protocol 84
- MWV Wind Speed and Direction 85
- XDR Transducer Measurement 87
- B = 11, a = 36, b = 37 etc.) 88
- TXT Text Transmission 93
- SENSOR AND DATA MESSAGE 97
- SETTINGS 97
- Wind Direction 100
- Changing the Settings (aWU) 101
- Supervisor Message 103
- Checking the Settings (aSU) 103
- Setting Fields 104
- Changing the Settings (aSU) 105
- Composite Data Message (aR0) 106
- MAINTENANCE 109
- Vaisala Service Centers 110
- TROUBLESHOOTING 111
- Self-Diagnostics 113
- Error Messaging/Text Messages 113
- Wind Sensor Heating Control 115
- Operating Voltage Control 115
- Technical Support 115
- TECHNICAL SPECIFICATIONS 117
- Table 13 Inputs and Outputs 118
- Table 14 Operating Conditions 118
- Table 16 Materials 119
- Table 17 General 119
- Options and Accessories 120
- Dimensions 121
- 0505-211 122
- Communication Protocol 124
- RS-485 Serial Interface 124
- ASCII, Polled 125
- NMEA 0183 v3.0, Query 126
- Query Commands 128
- SDI-12 PROTOCOL 131
- SDI-12 Timing 133
- CRC-16 COMPUTATION 135
- WIND MEASUREMENT AVERAGING 137
- 0710-044 138
- General Unit Settings 140
- Wind Configuration Settings 140
- Supervisor Settings 141
- *M210925EN* 143
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