Specifications

PL 3120 /PL 3150/PL 3170 Power Line Smart Transceiver Data Book iii
Edgedivide Output.........................................................................................................................................93
Frequency Output..........................................................................................................................................95
Infrared Pattern Output..................................................................................................................................96
Oneshot Output .............................................................................................................................................97
Pulsecount Output .........................................................................................................................................98
Pulsewidth Output.........................................................................................................................................99
Triac Output ................................................................................................................................................100
Triggered Count Output ..............................................................................................................................102
Notes...................................................................................................................................................................103
Chapter 4 -Coupling Circuits.................................................................................................................................105
Introduction ........................................................................................................................................................106
Recommended Coupling Circuit ........................................................................................................................106
Example 1. Line-to-Neutral, Non-Isolated Coupling Circuit ......................................................................108
Example 2. Line-to-Neutral, Transformer-Isolated Coupling Circuit .........................................................110
Example 3. Line-to-Earth, Non-Isolated Coupling Circuit..........................................................................112
Example 4. Line-to-Earth, Transformer-Isolated Coupling Circuit.............................................................114
Example 5. 3-Phase, Non-Isolated Coupling Circuit...................................................................................116
Example 6. 3-Phase, Transformer-Isolated Coupling Circuit......................................................................118
Example 7. Line-to-Neutral, Non-Isolated Floating Coupling Circuit........................................................120
Example 8. Line-to-Neutral, Power Line Power Supply Plus Coupler .......................................................122
Example 9. Low-Voltage AC, Non-Isolated Coupling Circuit ...................................................................124
Example 10. Low-Voltage AC, Transformer-Isolated Coupling Circuit ....................................................126
Example 11. Low-Voltage DC, Non-Isolated Coupling Circuit .................................................................128
Coupling Circuit Tutorial ...................................................................................................................................130
Power Line Communications Background..................................................................................................130
Power Line Coupling Basics .......................................................................................................................132
Power Line Coupling Details ......................................................................................................................134
Coupling Circuit Receive Impedance..........................................................................................................139
Safety Issues.......................................................................................................................................................139
Safety Isolation Considerations...................................................................................................................139
Ground Leakage Currents ...........................................................................................................................141
Capacitor Charge Storage............................................................................................................................142
Fuse Selection ................................................................................................................
.............................142
3-P
hase Coupling Circuits..................................................................................................................................142
Non-isolated Floating Coupling Circuits............................................................................................................143
Power Line Power Supply Plus Coupler ............................................................................................................145
Low-Voltage Coupling Circuits .........................................................................................................................146
Low-Voltage AC Coupling Circuits............................................................................................................146
Low-Voltage DC Coupling Circuits............................................................................................................147
Line Surge Protection.........................................................................................................................................148
Surge Immunity of Example Circuits.................................................................................................................149
Chapter 5 -Power Supplies for PL Smart Transceivers.......................................................................................153
Introduction ........................................................................................................................................................154
Power Supply Design Options............................................................................................................................155
Energy Storage Power Supplies .........................................................................................................................156