Categories: mXion

mxion PSD Pola G Turntable Decoder User Manual

mxion PSD Pola G Turntable Decoder User Manual



Dear customer, we strongly recommend that you read these manuals and the warning notes thouroughly before installing and operating your device. The device is not a toy (15+).

NOTE: Make sure that the outputs are set to appropriate value before hooking up any other device. We can’t be responsible For any damage if this is disregarded.


General information

We recommend studying this manual thoroughly before installing and operating your new device. Place the decoder in a protected location. The unit must not be exposed to moisture.

NOTE: Some funktions are only available with the latest firmware. Please make sure that your device is programmed with the latest firmware.


Summary of functions

  • DCC NMRA digital operation
  • Märklin-Motorola digital operation
  • DC/AC/DCC/MM operation
  • Complete analog operation with switch
  • boxes or normal switches
  • Very small outlet
  • Compatible NMRA-DCC module
  • All-In Replacement for POLA G Turntables
  • 10A reverse loop unit (analog/digital) integr.
  • LED light integrated as switch output
  • 3 inputs
  • 1 engine output for 2 amps
  • Outputs invertable
  • Reset function for all CV values
  • Easy function mapping
  • Load at engine output necessary
  • 2048 switch adresses
  • Multiple programming options
    (Bitwise, CV, POM accessoire decoder, register)


Scope of supply

  • Manual
  • mXion PSD
  • Adapter board for turntable
  • 2x coils, 16mm



Install your device in compliance with the connecting diagrams in this manual. The device is protected against shorts and excessive loads. However, in case of a connection error e.g. a short this safety feature can’t work and the device will be destroyed subsequently.

Make sure that there is no short circuit caused by the mounting screws or metal.

NOTE: Please note the CV basic settings in the delivery state.




Product description

The mXion PSD is a universal module for DC engines for turntables.

Ideal and great for the POLA®-G turntable (Faller® 331945). The PSD is there a 1:1 replacement for the pre-installed electronics. The PSD can be exactly as descripted above changed agains the old PCB in the turntable. All connections can be continue to be used, including the switch box (analog operation) can also be done via LGB® perform switching or control panels.

The special thing about the PSD is also here full-featured DCC decoder. Leave it digitally controlling the turntable comfortably. About a turnout address, the engine and the direction of rotation is switched.

Furthermore, the internal LED (per delivery permanently switched on) by address also manually switched.

The PSD is rounded off by an integrated 10A reverse loop module and a bottom plate to adapt the stage. By the short free reverse loop module do no develop short circuit and other problems more, when you get off the stage ascends. The sweeping loop electronics supplied always for the right polarity!


Connecting example

In digital mode, the control takes place via turnout adresses. The switch contacts (X5,X6) are not needed. All departure tracks can be connected directly to the digital control center. The automatic reverse loop adjusts the polarity always on. This supplies the stage.

In the analog, the hub can with any voltage (X1, X2) are operated. X3/X4 becomes not required. The departure tracks must be separate be switched (e.g. swith or LGB® control panel). The control of the turntable can either with switches or, the turntable, enclosed control panel or the LGB® switch panel.

If problems, change X3 and X4!

To solve the problem of the stage, your PSD comes with a board and 2 coals 16mm. So you can the sliding contacts of the turntable remove and no longer has contact problems. Set up the board in the middle of the stage out of the ground. Drill 2 holes in the chosen one distance in the turntable to fix the coals.

These must each haven a copper disc of the enclosed touch the board. Then close the 2 coals to the 2 tracks in the stage. Wire the turntable as follow:

In digital mode, connect the 2 cables the reverse loop module (X3, X4). The decoder always ensures the right polarity. All departure tracks can be directly with the digital command station connected.

In analog mode, close the cables of the board to your model train transformer. All departure tracks and the stage (i.e. board) must be switched separately.


Programming lock

To prevent accidental programming to prevent CV 15/16 one programming lock. Only if CV 15 = CV 16 is a programming possible. Changing CV 16 changes automatically also CV 15.

With CV 7 = 16 can the programming lock reset.



Programming options

This decoder supports the following programming types: bitwise, POM and CV read & write and register-mode.

There will be extra load for programming at the engine output.

In POM (programming on maintrack) the programming lock is also supported. The decoder can also be on the main track programmed without the other decoder to be influenced. Thus, when programming the decoder can not be removed.

NOTE: To use POM without others decoder must affect your digital center POM to specific decoder adresses.


Programming binary values

Some CV’s (e.g. 29) consist of so-called binary values. The means that several settings in a value. Each function has a bit position and a value. For programming such a CV must have all the significances can be added. A disabled function has always the value 0.

EXAMPLE: You want 28 drive steps and long loco address. To do this, you must set the value in CV 29 2 + 32 = 34 programmed.


Programming switch adress

Switch addresses consist of 2 values.
For addresses < 256 the value can be directly in address low. The high address is 0. If the address is > 255 this is as follows (for example address 2000):

2000 / 256 = 7,81, address high is 7 2000 – (7 x 256) = 208, address low is then 208.

Programm these values into the CVs of A1, A2, Engine, Direction of turn.


Programming loco adress

Locomotives up to 127 are programmed directly to CV 1. For this, you need CV 29 Bit 5 „off“ (will set automaticly).

If larger addresses are used, CV 29 – Bit 5 must be „on“ (automaticly if change CV 17/18). The address is now in CV 17 and CV 18 stored. The address is then like follows (e.g. loco address 3000):

3000 / 256 = 11,72; CV 17 is 192 + 11 = 203.
3000 – (11 x 256) = 189; CV 18 is then 189.


Reset functions

The decoder can be reset via CV 7. Various areas can be used for this purpose. Write with the following values:

11 (basic functions)
16 (programming lock CV 15/16)
33 (function and switch outputs)


Function output features



S = Standard, √ = Analog nutzbar

S = Standard, √ = Analog usable

FIG 15 CV-Tabelle


Technical data

Power supply:
7-27V DC/DCC
5-18V AC

10mA (with out functions)
Maximum function current:
Engine 2 Amps.

Maximum current:
3 Amps.

Reverse Loop Module:
10 Amps.

Temperature range:
-20 up to 85°C

Dimensions L*B*H (cm):

NOTE: In case you intend to utilize this device below freezing temperatures, make sure it was stored in a heated environment before operation to prevent the generation of condensed water. During operation is sufficient to prevent condensed water.


Warranty, Service, Support

micron-dynamics warrants this product against defects in materials and workmanship for one year from the original date of purchase. Other countries might have different legal warranty situations. Normal wear and tear, consumer modifications as well as improper use or installation are not covered. Peripheral component damage is not covered by this warranty. Valid warrants claims will be serviced without charge within the warranty period. For warranty service please return the product to the manufacturer. Return shipping charges are not covered by micron-dynamics. Please include your proof of purchase with the returned good. Please check our website for up to date brochures, product information, documentation and software updates. Software updates you can do with our updater or you can send usthe product, we update for you free.

Errors and changes excepted.

For technical support and schematics for application examples contact:



Read More About This Manual & Download PDF:

Documents / Resources

mxion PSD Pola G Turntable Decoder [pdf] User Manual
PSD Pola G Turntable Decoder, PSD, PSD Decoder, Pola G Decoder, Turntable Decoder, Decoder


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