
Installing the Siemens MPI-2 Mounting Plate for TRI-S, TRI-D, or TRI-R devices on a System 3 Rail Assembly involves a few straightforward steps. First, attach the MPI-2 plate to the System 3 Rail Assembly. Use the four 8 x 1/4 Phillips head screws provided to secure the plate at the upper and lower corners, referencing position A in the accompanying figure. Next, install one or two TRI-S, TRI-D, or TRI-R modules onto the MPI-2 plate. Use four 8 x 1/4 Phillips head screws for each TRI module to fasten them to the mounting plate. Finally, install the BP-30 cover plate in the System 3 door to finish the installation, providing a neat appearance. For detailed guidance on wire routing, including power-limited and non-power-limited options to ensure proper functionality of the installed devices, consult the System 3 Control Panel Installation Instructions (P/N 315-093680).


