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ESP-LXD 2-Wire Decoder Control System Installation & Troubleshooting Guide
LSP-1 Line Surge Protector
The LSP-1 Line Surge Protector provides surge protection for the ESP-LXD controller and the 2-wire
path and should be spliced into the 2-wire path in three distinct areas:
1. ESP-LXD 2-Wire Decoder Controller
– The LSP-1 Line Surge Protector provides surge
protection for the ESP-LXD controller against electrical surges originating from each 2-Wire
Path utilized. The LSP-1 Line Surge Protector shall be spliced into each 2-Wire Path in close
proximity to the ESP-LXD controller.
2. 2-Wire Path
– The LSP-1 Line Surge Protector provides surge protection for the following
FD-Series Field Decoders installed on the 2-Wire Path:
FD-101
FD-102
FD-202
Note:
The 2-wire path shall be surge protected and grounded with one LSP-1 Line Surge Protector
every 500 feet or every 8 decoders, whichever is smaller.
3. Termination of 2-Wire Path
– An LSP-1 Line Surge Protector shall be installed at the end of
the 2-wire path in a STAR configuration.
SD-210 Sensor Decoder
SD-210 Sensor Decoders have a built-in line surge protector to provide surge protection for each
sensor installed on the 2-Wire path.
FD-401 and FD-601 Field Decoder
The FD-401 and FD-601 Field Decoders have a built-in line surge protector to provide surge
protection for Field Decoders installed on the 2-Wire Path:
FD-101
FD-102
FD-202
Note: Because the FD-401 & FD-601 Field Decoders and SD-210 Sensor Decoder have built-in
surge protection, the 2-wire path surge protection requirement could be stated in the following
manner: The 2-wire path shall be surge protected and grounded with one LSP-1, FD-401, FD-601
or SD-210 every 500 feet or every 8 decoders, whichever is smaller.
