Echelon LONWORKS PLT-22 User Manual

Contents

Table Of Contents
Table Of Contents
Table Of Contents
Introduction
Audience
Using the PLT-22 Transceiver
Mechanical Dimensions
PLT-22 Transceiver Pinout
PLT-22 Transceiver Electrical Specifications
External Components
Power Supply Bypassing and Grounding
Neuron ® Chip Connections
Transmit Output Level
PLT-22 Transceiver Programming
Dual Carrier Frequency Mode
CENELEC Access Protocol
Standard Transceiver Types
LonBuilder ® and NodeBuilder ® PLT-22 Transceiver
Coupling Circuits
Power Line Communications
Coupling Techniques
Power Line Coupling Details
Safety Issues
Ground Leakage Currents
Fuse Selection
Example 2: Line-to-Neutral, Transformer-Isolated Coupling
Example 4: Line-to-Earth, Transformer-Isolated Coupling
Power Supplies for the PLT-22 Transceiver
Power Supply Noise
Energy Storage Capacitor-Input Power Supplies
Capacitor-Input Power Supply Schematic
Energy Storage Linear Supplies
Traditional Linear Power Supplies
Noise at the Power Supply Input
Switching Power Supply Output Noise Masks
Options
Off-the-Shelf Switching Supplies
Design and Test for Electromagnetic Compatibility
EMI Design Issues
ESD Design Issues
Conducted Emissions Testing
Communication Performance Verification
Why Verify Communication Performance?
Power Line Test Isolator
Test Equipment
Good Citizen Verification
Excessive Loading Verification
Transmit Performance Verification
Receive Performance Verification
Verification Procedure
Reference Documentation
Appendix A PLT-22 Transceiver Isolation Transformer
PLT-22 Transceiver Isolation Transformer Schematic
Appendix B PLT-22 Transceiver-Based Node Checklist
PLT-22 Transceiver-Based Node Checklist
PLT-22 Transceiver Coupling Circuit Components Key
PLT-22 Transceiver Power Supply - Switching Type
EMI & ESD Design
Product Qualification - EMC

Echelon LONWORKS PLT-22 User Manual Manual pdf 116 page image

PLT-22 Transceiver Isolation Transformer Schematic1234Primary SecondaryPLT-22 Transceiver Isolation Transformer ElectricalSpecificationsBelow are specifications for the PLT-22 Transceiver Isolation Transformer Schematicshown above.Parameter Min Typ Max UnitsTurns Ratio (1-2) : (3-4) 1.0DC Resistance1-23-40.200.20OhmOhmMagnetizing Inductance 1-2Dry, @100kHz, 1Vrms0.75 1.0 1.25 mHMagnetizing Inductance 1-2,Wet, @100kHz, 1Vrms,plus15mADC0.75 mHLeakage Inductance 1-2(3-4 shorted) @100kHz, 1Vrms10.8 12.0 13.2 μHWinding Capacitance 1-2 30 pFWinding to Winding Capacitance1-2 shorted to 3-4 shorted30 pFA-2 Appendix A

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