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Domburg Train Support
Your partner in model railroad technology
DTS Manual:
KeerPlus3
Reverse loop solution for DCC model railways
Version 2 - 2019

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Summary of Contents for Domburg KeerPlus3

  • Page 1 Domburg Train Support Your partner in model railroad technology DTS Manual: KeerPlus3 Reverse loop solution for DCC model railways Version 2 - 2019...
  • Page 2: Table Of Contents

    Manual KeerPlus3 │ version 2 – 2019 Content Introduction ................................3 How the KeerPlus3 works ............................. 4 The functionallity of the KeerPlus3 ........................4 Requirements of the Reverse loop ........................5 Mounting ................................5 View of the KeerPlus3 ............................6 Connecting the KeerPlus3 ............................
  • Page 3: Introduction

    In this manual we explain how the solution works and how it can be applied to your model railway. I wish you a lot of ease of use with the KeerPlus3, if you have suggestions for improving the product or a critical note. Let me know by sending an email to info@domburgtrainsupport.nl...
  • Page 4: How The Keerplus3 Works

    How the KeerPlus3 works The functionality of the KeerPlus3 The KeerPlus3 works entirely based on current detection divided into three sections. Current detection means that each section is detected along its entire length on power consumers such as locomotives or carriages with lighting.
  • Page 5: Requirements Of The Reverse Loop

    Mounting The KeerPlus3 has 4 mounting points. It is advisable to mount the printed circuit board at height due to the heat development of the voltage regulator. Preferably with the components on top. Mounting the module in the upside down or lateral position is also possible if you consider the cooling of the cooling element.
  • Page 6: View Of The Keerplus3

    Manual KeerPlus3 │ version 2 – 2019 View of the KeerPlus3 Supply voltage (note: always connect) DCC Signal from the control panel (note: always connect) Section 3 (S3) A / B Section 2 (S2) A / B Section 1 (S1) A / B...
  • Page 7: Connecting The Keerplus3

    Manual KeerPlus3 │ version 2 – 2019 Connecting the KeerPlus3 Power Supply The supply voltage that must be offered on the KeerPlus3 can be done in three different ways:  DC voltage 12-16 VDC  AC voltage 12-16 VAC  DCC Signal The DCC signal means the Track Output of the control panel.
  • Page 8: The Reverse Loop

    So, make both connections, otherwise the KeerPlus3 will not work. You can also loop the DCC signal to the power input. The KeerPlus3 does not get the power from the DCC input because there are other ways to power the module. The Reverse loop In the image above you can see the three sections drawn with the corresponding connection to the module.
  • Page 9: Switching Outputs

    Manual KeerPlus3 │ version 2 – 2019 Switching outputs At the top there are 4 screw terminals (9 to 12) which switch based on current detection. As soon as current detection is present in a section, a second relay will switch between these terminals. There are three relays in total, one for each section.
  • Page 10: Detection

    However, what is important is that the other conductor (DCC-A on the diagram) is brought to terminal 9 on the KeerPlus3. The reason that it should be the other polarity if the person you offer on the busy reporting module is because the busy reporting module in this case does not feed the section as normal, but only detects it.
  • Page 11: Faq

    Solution 2: You have swapped S1 and S3 I do not receive a detection notification on the busy notification module Solution 1: You have offered the same polarity on the KeerPlus3 terminal 9 as on the COM connection of the busy reporting module Solution 2: Your resistance has the wrong value The module gives a detection on S1 while the locomotive runs in S3.
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