WattNode^® Plus for LonWorks^®

The WattNode Plus

The WattNode Plus is a kilowatt hour kWh energy meter that communicates on a LonWorks network and measures 1, 2, or 3 phases with voltages from 120 to 600 volts alternating current VAC and 5 to 6,000 amps in delta (phase to phase) and wye (phase to neutral) configurations. For built-in data logging, see the WattNode Logger for LonWorks.

Measurements

• True RMS Power - Watts (Phase A, B, C, all phases)
• Reactive Power - VARs (Phase A, B, C, all phases)
• Power Factor (Phase A, B, C, all phases)
• True RMS Energy - Watthours WH kWh (Phase A, B, C, all phases)
• Reactive Energy - VAR-hours (All Phases)
• AC Frequency
• Computed RMS Voltage (Phase A, B, C)
• Computed RMS Current (Phase A, B, C)
• Demand
• Peak Demand

Features

• LonMark 3.4 Certified
• Small form factor for easy installation inside most electrical panels, see a sample installation diagram.
• Pluggable screw terminals for easy wiring
• 0.5% nominal accuracy (see manual for details)
• True RMS power even with leading or lagging power factor and chopped or distorted waveforms
• Monitors variable speed drives, pumps, and motors
• Safe CT's (current transformers), producing 0.333 VAC at rated current.
• Split core CTs for quick installation
• Solid core CTs are less expensive and prevent tampering
• Custom and standard Bus Bar sized CTs
• The WattNode communicates on a LonWorks TP/FT-10 free topology twisted-pair network using Echelon’s^® LonTalk^® network protocol.

WattNode is a registered trademark of Continental Control Systems LLC. LonMark, the LonMark logo and LonWorks are registered trademarks of Echelon Corporation

Electrical

• Line powered
• UL Listed
• CE Mark
• FCC Class A
• Operating Voltage Range: 80% to 115% of nominal
• Power Line Frequency: 50 or 60 Hz
• CT Input: 0.333 VAC nominal, 0 - 0.5 VAC operating, 3 VAC maximum

Measurement Configurations

• Three phase: 4 wire
• Three phase: 3 wire

Communication

• Transceiver: Echelon TP/FT-10
• Bit Rate: 78 kbps
• Maximum Nodes: 64 per subnet
• Maximum Distance: 500–2700 meters
• Maximum Stub Length:
  • Free Topology: Unlimited
  • Bus Topology: 3 meters
    

Accuracy

• 0.5% nominal accuracy (see manual for details)

Environmental

• Operating Temperature: -30° to 55°C
• Humidity: Up to 90% RH (non-condensing

Mechanical  Click on the image for a larger view.

• Enclosure:
  • High impact, ABS plastic
  • Flame Resistance Rating: 94V-0, IEC FV-0
  • Size: 143mm × 85mm × 38mm (5.63" × 3.34" × 1.5")
  • Weight: 295gm (10.4oz)
• Connectors: Euroblock style pluggable terminal blocks
  • Green: 22 to 12 AWG (1.0mm - 3.2mm), 600 V
  • Black: 22 to 12 AWG (1.0mm - 3.2mm), 300 V

Pricing information for all models and products

Model	VAC Phase to Neutral	VAC Phase to Phase	Electrical Service Types	Neutral Required	MSRP
WNC-3Y-208-FT10	120	208-240	1 Phase 2 Wire 120V with neutral 1 Phase 3 Wire 120V/240V 3 Phase 4 Wire 120V/208V		$499
WNC-3Y-400-FT10	230	400	1 Phase 2 Wire 230V with neutral 3 Phase 4 Wire 230V/400V		$499
WNC-3Y-480-FT10	277	480	3 Phase 4 Wire 277V/480V		$499
WNC-3Y-600-FT10	347	600	3 Phase 4 Wire 347V/600V		$549
WNC-3D-240-FT10	N/A	208-240	1 Phase 2 Wire 208V (No neutral) 1 Phase 2 Wire 240V (No neutral) 1 Phase 3 Wire 120V/240V 3 Phase 3 Wire 208V (No neutral) 3 Phase 4 Wire 120V/208V		$499
WNC-3D-400-FT10	N/A	400	3 Phase 3 Wire 400V (No neutral) 3 Phase 4 Wire 230V/400V		$549
WNC-3D-480-FT10	N/A	400-480	3 Phase 3 Wire 480V (No neutral) 3 Phase 4 Wire 277V/480V		$549

List prices for 1 piece quantities. Call for pricing on larger quantities.

Prices effective May 1, 2009. Prices subject to change without notice.

Datasheet, Manual, XIF File, and Application Notes

• Datasheet (pdf)
• Manual (pdf)
• Engineering Specifications (doc)
• WattNode Plus FT10 External Interface File (xif)
• LonWorks Plug-In (exe 1.3M)
• LonWorks Plug-In Manual (pdf)
• Application Notes

Options

Option B - Emulates the WNB-xx-xxx-FT10 series of WattNode meters

• Option B Manual (pdf)
• Option B Manual Supplement (pdf)
• WattNode Plus FT10 Option B External Interface File (xif)
• Firmware Update

Option BI - Emulates the WNB-xx-xxx-FT10 series of WattNode meters with option I (Integer Output).

• Option BI Manual (pdf)
• WattNode Plus FT10 Option BI External Interface File (xif)
• Firmware Update

Click the downloads tab for options manuals, external interface files XIF, etc.

Option B

If you need a WattNode that behaves like our old WNB series models (models numbers WNB-xx-xxx-FT10), then you should order a

WNC-xx-xxx-FT10 Option B. The Option B WattNode models are very similar to the original WNB series WattNode Plus models, but with a few changes:

• New program ID: 8:00022:1500:0A04:05. Because there are some hardware changes, LonMaker requires a new program ID.
• Energy and time of day are stored to non-volatile memory every 5 seconds. The old version stored these every 20 seconds.
• The energy log has been removed (see our WattNode Logger for LonWorks if you need logging). The nviLogRequest and nvoLogData variables still exist, but do nothing.
• The network variable list is identical to the original WNB series WattNode Plus
• Firmware version 3.03
• Firmware Update

Option BI

If you need a WattNode that behaves like our old WNB series models the integer output Option (models numbers WNB-xx-xxx-FT10), then you should order a WNC-xx-xxx-FT10 Option BI. The Option BI WattNode models are very similar to the original WNB series WattNode Plus models, but with a few changes:

• New program ID: 9:00022:1500:0A:04:0B. Because there are some hardware changes, LonMaker requires a new program ID.
• New XIF (external interface)
• Energy and time of day are stored to non-volatile memory every 5 seconds. The old version stored these every 20 seconds.
• The energy log has been removed (see our WattNode Logger for LonWorks if you need logging). The nviLogRequest and nvoLogData variables still exist, but do nothing.
• The network variable list is identical to the original WNB series WattNode Plus with option I (Integer Output).
• Firmware version 3.12
• Firmware Update