Specs
Decoder addresses per LDI interface unit
- 500 maximum – Although the LDI can handle a maximum of 500 decoder addresses total. With any number over 380, the number of active decoders you will be able to operate simultaneously may be reduced.
Active solenoids per LDI (with 20 mA current draw each)
- 40 maximum
Active solenoids per two-wire path on LDI (with 20 mA current draw each)
- 20 maximum
Maximum allowable voltage drop per two-wire path
- 9 Volts
For LDI Lights
- 15 mA (total) – Although the LDI can supply 1,000 mA and 500 mA respectively, allow 50 mA of safety factor (design 950 mA with an LDI and 450 mA with an SDI)
For each inactive FD-101 or FD-102 decoder
- 0.5 mA each
For each inactive FD-401, FD-202 or FD-601 decoder
- 1.0 mA each
For each active Golf Black Solenoid (GBS25) coil
- 20 mA each
LSP-1 Installation
- No more than 8 decoders between two LSP-1 surge arrestors or no more than 500 ft., whichever is less. LSP-1 ground grid resistance of 50 ohms or less is recommended.