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DTS Manual:

KeerPlus3

Reverse loop solution for DCC model railways

Version 2 - 2019

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Summary of Contents for KeerPlus3

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

Page 2: ...e loop 8 Switching outputs 9 Detection 10 FAQ 11 I have everything connected when the train enters the Reverse loop I get immediate closure 11 The train gives a short circuit if it enters section 3 from section 2 Or from S2 to S1 11 I do not receive a detection notification on the busy notification module 11 The module gives a detection on S1 while the locomotive runs in S3 11 Very occasionally I ...

Page 3: ...the lane to change polarity There are two types of circuits the short circuit method and the current detection solution The KeerPlus3 only uses the current detection method 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 kno...

Page 4: ...he same polarity as S1 Subsequently section S2 is driven and as soon as the locomotive activates the last section S3 the module immediately switches the S2 and the last section S3 to the opposite polarity The first section S1 remains untouched so that it can be ridden again This works identically when the Reverse loop is driven from the other direction In rest mode the module sniffs on sections S1...

Page 5: ...ections The advice is to use approximately 1 5x a locomotive length In theory a length of 5 centimetres would be enough to generate a good detection However practice shows that contact between the rails and the wheels is sometimes not guaranteed To make the Reverse loop sections work reliably and stably we recommend using a longer length for this Mounting The KeerPlus3 has 4 mounting points It is ...

Page 6: ...ote always connect 2 DCC Signal from the control panel note always connect 3 4 Section 3 S3 A B 5 6 Section 2 S2 A B 7 8 Section 1 S1 A B 9 Switch output Common 10 11 12 Switch outputs S1 S2 S3 13 Switch position S1 14 Switch position S2 15 Switch position S3 Aansluiten van de KeerPlus3 ...

Page 7: ...the plus and minus DCC Signal The figure shows the DCC input 2 to which you must connect the raw DCC voltage from your control panel In the base the left terminal is B and the right is terminal A In the connection diagram we have given the A a blue colour and the B a black colour Unfortunately the output is not the same for every exchange so you must experimentally discover which order should be a...

Page 8: ...he sections otherwise the module will switch incorrectly Finally it is important that all sections on both sides in the two rails are interrupted You can do this by using rail welding or cutting the rails The sections are therefore not allowed to make contact in both A and B There are 3 LEDs on the module that show the polarization status per section If the LED is off the polarization relay of tha...

Page 9: ...of switches LEDs signals relays and so on The operation is simple You connect any voltage or signal whichever suits you best to terminal 9 As soon as section 1 is detected this voltage will be forwarded to terminal 10 upon detection in S2 the voltage will be forwarded to terminal 11 and upon detection in S3 terminal 13 receives the voltage from terminal 9 Note that the relay responds to detection ...

Page 10: ... 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 You connect this dcc polarity to the terminal 9 with a carbon resistor with the value 10 kOhm 10 000 Ohm Only this value will generate a detection on your busy reporting module The resistor ca...

Page 11: ...while the locomotive runs in S3 Solution The order of the detectors on terminal 10 11 12 is not correct Very occasionally I get a shortage when the loco enters one of the sections This is not always the case but if it happens on the same transition each time Solution The chip on the KeerPlus3 has a contact problem Return the module for repair under warranty Epilogue I have written this manual for ...

Page 12: ...Manual KeerPlus3 version 2 2019 Page 12 van 12 ...

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