Contents
3
Contents
1 OVERVIEW ............................................................................................................ 5
1.1 WattNode............................................................................................................................................. 5
1.2 Current Transformers .......................................................................................................................... 5
1.3 LonTalk
®
Network .............................................................................................................................. 6
1.3.1 LonMark
®
................................................................................................................................... 6
1.3.2 External Interface File (XIF) ...................................................................................................... 6
2 HARDWARE
INSTALLATION............................................................................... 7
2.1 Precautions .......................................................................................................................................... 7
2.2 Measurement Configurations .............................................................................................................. 7
2.2.1 Single-Phase Two-Wire .............................................................................................................. 8
2.2.2 Single-Phase Three-Wire ............................................................................................................ 9
2.2.3 Three-Phase Three-Wire Delta ................................................................................................. 10
2.2.4 Three-Phase Four-Wire Wye .................................................................................................... 11
2.2.5 Three-Phase Four-Wire Delta ................................................................................................... 12
2.3 Mounting ........................................................................................................................................... 12
2.4 Connecting Current Transformers ..................................................................................................... 13
2.5 Connecting Voltage Terminals .......................................................................................................... 14
2.6 Network Wiring................................................................................................................................. 14
2.7 Installation Summary......................................................................................................................... 15
3 NETWORK
CONFIGURATION............................................................................ 16
3.1 Identifying the WattNode .................................................................................................................. 16
3.2 WattNode Reinitialization ................................................................................................................. 16
3.3 Network Variables............................................................................................................................. 17
3.3.1 Authentication........................................................................................................................... 17
3.3.2 Network Variable Summary ..................................................................................................... 18
4 OPERATION ........................................................................................................ 19
4.1 Node Object....................................................................................................................................... 19
4.1.1 Requests .................................................................................................................................... 19
4.1.2 Status......................................................................................................................................... 20
4.1.3 Time of Day .............................................................................................................................. 21
4.1.4 Alarms....................................................................................................................................... 21
4.2 Energy Measurement ......................................................................................................................... 22
4.2.1 Energy Output........................................................................................................................... 22
4.2.2 Zeroing Energy ......................................................................................................................... 23
4.2.3 Energy Configuration ............................................................................................................... 23
4.3 Power Measurement .......................................................................................................................... 24
4.3.1 Power Output ............................................................................................................................ 24
4.3.2 Power Alarms............................................................................................................................ 25
4.3.3 Power Alarm Example .............................................................................................................. 26
4.4 Demand Measurement ....................................................................................................................... 27
4.4.1 Demand Configuration ............................................................................................................. 28
4.4.2 Demand Output......................................................................................................................... 29
4.4.3 Peak Demand ............................................................................................................................ 29
4.4.4 Demand Alarms ........................................................................................................................ 30
4.4.5 Load Control ............................................................................................................................. 30
