Page 12 Large-scale Decoder & Sound Decoder MX695/6/7/9
4 Loco Adapter Boards for Large-Scale Decoder
Locomotive adapter boards serve as an "intermediate part" between the engine and the decoder,
to facilitate the decoder installation and connection to the various loco components. It also allows
for an easy exchange of the decoder when necessary. Additionally, some loco boards also offer
a low voltage output (i.e. for servos).
Note: Adapter boards for ZIMO large-scale decoders DO NOT contain an additional synchronous
rectifier to increase power, as do the boards for “small” decoders (for N, HO etc., see operating
manual for MX618, MX621...MX648 decoder). This would be redundant due to the very strong
and low-loss synchronous rectifier already present in large-scale decoders.
Because of the very different needs, there are a relatively large number of types or versions of
these locomotive boards available. In addition to the standard types described below, special de-
signs are also manufactured (for a minimum-order quantity of about 50, mostly for vehicle manu-
facturers) that are based on the standard printed circuit boards, but with different or differently ar-
ranged connectors.
Loco boards LOKPL95BS, -BV with solder pads,
designed for the large-scale decoders MX695LS and MX695LV
The wires from the locomotive (motor, track, lights, speakers...) are soldered directly to the solder
pads and an appropriate decoder is plugged into these boards. Depending on the type of the lo-
co board (-BS or BV), these are either simple circuit boards (no other electronic components on
the board) or a board with "additional benefits" (in this case a voltage regulator for low voltages,
which is often useful to have):
LOKPL95BS LOKPL95BV
circuit board with solder pads, with additional variable low voltage
usabilty of upper connector row (Adjustable from 1.5 V to track voltage),
depends on the decoder type otherwise identical
plugged in
Loco board LOKPL95BV with decoder MX695 plugged in
NOTE: The servo connections are NOT
accessible on the loco board. They are
therefore directly plugged in to the decod-
er (at the 3-pin sockets of the MX695).
Special applications may also contain servo
connectors on the loco board (i.e. with special
board layouts that have enough room on the
underside).
Loco boards LOKPL96...
designed for large-scale decoders MX696S and MX696V
The large-scale decoder family MX696 differs from the MX695 by their narrow designs (29 mm
instead of 40 mm). The slightly lower rating (4 A instead of 6 A) is not all that significant, but the
MX696 is not equipped as well with low voltage outputs as the MX695, in particular the 5 V –
supply is lacking. The loco boards LOKPL96.V therefore offer a 5 V source (and the complete
servo connectors), but no variable low-voltage as the ...PL95.
Connection diagram for loco boards
LOKPL96BS (Solder pads)
and LOKPL96BV “
LOKPL96LS (Plug-in)
and LOKPL96LV “
LOKPL96KS (Screw terminals)
and LOKPL96KV “
LOKPL96BS LOKPL96BV
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