$12.95
The QuadLN_S Isolated Input Board allows a MAIN IO or AUX IO port to provide 4 optoisolated input channels for interfacing with output signals from DCC-powered devices or from other devices using a different power supply ground than the QuadLN_S. The board can be plugged into either the Main or Aux IO port on the QuadLN_S. The built-in isolation helps prevent ground loops and sneak paths that can occur when connecting to signals that are not referenced to the same Ground potential as the QuadLN_S.
The board can also be used to directly monitor DCC signals directly. For this use the board must be plugged into the Main IO port. See the Instruction Sheet (below) for details.
The Isolated Input Board allows circuit breaker status or DCC status to be safely monitored and reported via Loconet, used to drive indicators around the layout or shown on a control panel in JMRI.
The required input current is just a few milliamps. Input current must be kept under 15 mA in all cases. Each channel has a reverse protection diode plus three input resistors to help limit the input current. This board comes configured for monitoring voltages between 10 volts and 24 volts, and for monitoring DCC signals. The Instruction Sheet (see below) describes how to configure the board for lower voltage inputs.
Please read the instructions carefully. Don’t bypass the onboard resistors unless you are sure. Don’t connect to higher voltages without adding external resistors.
Features
- Plugs into a QuadLN_S MAIN or AUX IO Port
- Provides 4 independent Isolated Inputs
- Low input current requirement, similar to driving an LED
- Includes mounting screws and standoffs