WattNode^® Logger for LonWorks^®

The WattNode Logger

The WattNode Logger is a kilowatt hour (kWh) energy meter that communicates on a LonWorks network, and can log 24,000+ measurement records in non-volatile memory. The WattNode Logger 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.

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
• RMS Voltage (Phase A, B, C)
• Computed RMS Current (Phase A, B, C)
• Demand
• Peak Demand

Quantities Logged

• Date and Time
• Net Energy (A, B, C and Sum)
• Reactive Energy (Sum)
• Positive Energy (Sum)
• Real and Reactive Power (A, B, C and Sum)
• Voltage, Current and Power Factor (A, B, C)
• Demand

Features

• Logging intervals from 1 minute to 12 hours allows logging up to 250 days of data
• 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 and the LonMark Logo are managed, granted, and used by LonMark International under a license granted by Echelon Corporation

Electrical

• Line powered
• FCC Class B
• Operating Voltage Range: -80% to +115%
• 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 (see manual for details)
• Time: ± 2 minutes a year (battery backed)

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: 320gm (11.3oz)
• 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-L	120	208-240	1 Phase 2 Wire 120V with neutral 1 Phase 3 Wire 120V/240V 3 Phase 4 Wire 120V/208V		$595
WNC-3Y-400-FT10-L	230	400	1 Phase 2 Wire 230V with neutral 3 Phase 4 Wire 230V/400V		$628
WNC-3Y-480-FT10-L	277	480	3 Phase 4 Wire 277V/480V		$628
WNC-3Y-600-FT10-L	347	600	3 Phase 4 Wire 347V/600V		$680
WNC-3D-240-FT10-L	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		$628
WNC-3D-400-FT10-L	N/A	400	3 Phase 3 Wire 400V (No neutral) 3 Phase 4 Wire 230V/400V		$680
WNC-3D-480-FT10-L	N/A	400-480	3 Phase 3 Wire 480V (No neutral) 3 Phase 4 Wire 277V/480V		$680

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

• Download a datasheet (PDF)
• Download or view the Manual: Manual (PDF)
• Download or view Engineering Specifications: Engineering Specifications (DOC)
• Download XIF (external interface) WNC FT10 L.XIF
• Download LonWorks Plug-In (EXE 1.3M)
• See a list of Application Notes

Options

There are currently no options available for the WattNode Logger.

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