Page 56 Non-Sound Decoder MX618 - MX638 and Sound Decoder MX640 - MX659
MX623P12, MX630P16, MX633P22, MX645P16 and MX645
P22…
- Decoder with PluX-Connector:
In contrast to the 21-pin interface (see above), the PluX connection has the male connector mounted
on the decoder and the female on the loco board.
“PluX” is available with 8, 12, 16 and 22 pin con-
nectors and also use one of the pins for indexing.
The PluX system is defined by the NMRA 9.1.1 and the NEM, including the maximum dimensions for
standardized decoders.
The MX630P16 comes with a 16-pin male plug (15 usable pins, 1 index
pin) and can be plugged into engines with 16-pin sockets but also in
engines with 22-pin sockets (see drawing at left: brown area = 16-pin).
In 8-pin (yellow) and 12-pin equipped locomotives it depends on the
available space whether the 16-pin version can be used.
The MX630P, which is NOT a sound decoder, uses the two pins origi-
nally defined for speaker outputs for the additional outputs FO3 and
FO4 instead. This will not damage speakers that may be installed in the
locomotive and connected to those pins.
The MX623P12 (which is narrower than the MX630!) has the 12-pin
“PluX” connector. It does not have the upper 4 connections as the
MX630 and therefore does not have SUSI or GROUND connections on
the plug.
The
MX633P22 has a “complete” PluX connector with 9 function outputs.
The sound decoders MX643 was and the MX645 is available with either 16 or 22-
pin “PluX” connect-
or. Also see chapter 2 (“Technical Information).