ZIMO MX638 Series Instruction Manual page 65

Non-Sound Decoder MX600 - MX638 and Sound Decoder MX640 - MX659
ADAMKL – Adapter boards with screw terminals for MTC-21 decoder:
ADAMKL – without low-voltage supply
Connection layout is the same as with the solder pad version.


Typical application for this decoder/board combination: O-scale!
ADAMKL15 or ADAMKL50 – with 1.5 or 5.0 V supply
ADAMKL with MX634C plugged in
results in a sound decoder with
1.8 A motor (total current)
8 function outputs
2 logic-level outputs (for servos, SUSI)
with direct connection for 16 V catalytic capacitors
or gold caps module with 7 gold caps
Dimensions: 44 x 26.5 x 12 mm
ADAMKL15 with MX644C plugged in
results in a sound decoder with
1.8 A motor (total current)
8 function outputs
2 logic-level outputs (for servos, SUSI)
1,5V low voltage output
3 Watt audio, 4 – 8 Ohm, 32 Mbit
with direct connection for 16 V catalytic capacitors
or super caps to 6800 μF
Dimensions: 44 x 26.5 x 12 mm
IMPORTANT NOTES to the use of adapter boards:
POSSIBLE PROBLEMS during SOFTWARE UPDATE and SOUND UPLOAD
when using adapter boards with low-voltage supply
(ADAPLU15, ADAPLU50, ADAMTC15, ADAMTC50, ADAMKL15, ADAMKL50)
Software updates and sound uploads (via a MXULF, MXDECUP, MX31ZL...) may fail due to
the voltage regulator on the adapter board!
Remedy: The decoder must be removed from the board and connected directly to the update
module.
ATTENTION: Connecting large smoke generators (USA-Trains or similar) is NOT possible!
While the adapter board does increase the overall performance of the decoder by means of additional recti-
fiers, it does NOT increase the current limit of the decoder's function outputs.
NOTES on connecting Servos to ADAPLU50 (version with 5V – low-voltage supply), power supplied
between low voltage "NSPG" (= 5V) and "GND" (ground), and controlled by the servo control
line on one of the terminals "SUSI Clock "or" SUSI Data ".
The commercially available servo drives behave very differently. While many types can be
operated without any problems, others exhibit various problems and in many cases also
depends on whether the command station creates a "RailCom gap". Jerking at standstill, or
running several times between stops after power-on and when operating the servo may be
observed.
A REMEDY in such cases is usually possible by adding capacitors - 1) A 16V 2200 µF (or
larger) capacitor connected to the usual energy storage circuit (i.e. between "CAP Plus" and
"GND"), and
2) A 220 uF, 6.3 V (may also need higher or lower than 220 µF, trial and error!) capacitor in
the supply lines of the servos (i.e. between "POS" and "GND").
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