BM2 Block Stopping Module - Modelmania .pl

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BM2 Block Stopping ModuleBM2 Block Stopping ModuleFeb 20061

BM2 Block Stopping Module2The ABC modules BM1, BM2 and BM3 may only be usedwith Digital plus by Lenz or other standard digital controlsystems with a NMRA-conformance seal. If in doubt, ask thesystem supplier.The current-carrying capacities stated below may not beexceeded as this could damage the block section module.Technical age at signalinput (AC or DC)Dimensions3.0 ADC:11.24 VAC: 8.24V70 x 60 x20 mmRequirements for using the ABC technologyTo use the ABC technology with BM1, BM2 and BM3 blocksection modules, you will need locomotive decoders of theGOLD series or other decoders that support the ABCtechnology.How does the ABC technology work?With little effort, ABC manages to accomplish just whatmodel railway enthusiasts crave: precise on-the-spotstopping in front of signals, slow approach and passage inthe opposite direction.By means of simple modules, which supply the brakingsection in front of a signal, an asymmetry is created in theotherwise symmetrical digital track voltage. Naturally, this2

BM2 Block Stopping Module3occurs only if the signal is at "Stop" or "Slow approach".This asymmetry informs the locomotive decoder about thesignal status: A "Stop" or "Slow approach" signal indicates anasymmetry - the train will stop or slow down. A "Clear" signal indicates normal digital voltage - thetrain will continue.Additional advantages of the ABC technology: All locomotive functions (e.g. front lighting) can still beswitched while the locomotive stops in front of the signal. Programming in operational mode (POM) possible. The locomotive can reverse away again from the signal! A locomotive can pass in the opposite direction, even ifthe signal is at "Stop". Shunting is possible, even if the signal is at "Stop".Simply activate the shunting mode! No short-circuits when crossing section points betweenthe driving and stopping sections.Compared to the simple BM1, the BM2 module has thefollowing advantages: In addition to signal stopping, "Slow approach" (HP2)is also possible. Easy control of the module using light signals andsemaphore signals fitted with switches. Even rear-powered (pushed) trains (push-pull trains,commuter trains, motor coaches) stop at the right spot.Depending on the signal setting, you can use the BM2module to direct locomotives fitted with a GOLD decoder tostop (for HP0), to pass (for HP1) or to slowly approach (forHP2). Of course, you can set the speed for the slow approachin the locomotive decoder.The BM2 has two control inputs. Depending on which one isactive, the BM2 sends the information "STOP or "SLOW

BM2 Block Stopping ModuleAPPROACH" to the locomotive equipped with the GOLDdecoder.Rear-powered trains (pushed) and push-pull(commuter) trains? – no problem!Would you also like to use the "Signal stop" and "Slowapproach" functions for rear-powered (pushed) trains andpush-pull (commuter) trains?Divide the section in front of the signal into a driving (A)and a braking section (B).When the rear-powered (pushed) train in the driving sectionreaches the braking section, the BM2 switches the drivingand braking sections to asymmetrical digital voltage. As thepushing locomotive is already located in the driving sectionat that time, the GOLD decoder recognises this asymmetryand switches to “Stop" or "Slow approach”, depending onthe signal setting.The length of the driving section must be calculated so as tofully accommodate the longest trains passing this section.The length of the braking section depends on the brakingdelay and/or distance set in the locomotive decoder.Trains passing in the opposite direction do not initiate abraking procedure.The above procedure requires that the leading coach ofthe rear-powered (pushed) train is fitted with a powerconsumer, e.g. interior lighting.44

BM2 Block Stopping Module5Installing and connecting the BM2 moduleThe BM2 connectionsA brief overview of the BM2 connections:Supply from the track to the left in thedirection of travelDriving section connectionSupply from the track to the rightin the direction of travelTOStopping section connectionOutputs for connectingfeedback modules LR101CSignal input "Stop"Signal inputOutput for connecting block sectionmodule BM3Figure 1Signal input "Slow approach"

BM2 Block Stopping Module6Installing the BM2Length of driving and braking sectionsFirst, define the length of the driving section (A). Keep inmind that the longest train on your layout must fit in thissection!Then, define the length of the braking section (B) in front ofthe signal. Keep in mind that the fastest train on your layoutmust be able to come to a standstill within this section. Usethe feature "constant braking distance" of the GOLD decoder- this will ensure that all trains will come to a completestandstill within the braking section you have defined."On the right means on the right.". was a slogan on an Autobahn sign at the end of the 1980s.It was meant to remind drivers to change back to the rightlane after overtaking a lorry.The same is true when using the BM2 module: "on the rightmeans on the right". It is always the right rail in thedirection of travel where a rail-break is made when a drivingor braking section is defined.Make breaks in the right rail at the beginning and at the endof the braking section. Alternatively, you can use aninsulating track connector if there is a track joint at the pointin question.Connecting the driving and braking sectionsConnect terminal (1) to the right rail before the brakingsection.Connect terminal (2) to the left continuous rail.Connect the right isolated rail of the driving section toterminal (3) of the BM2.Connect the right isolated rail of the braking section toterminal (4) of the BM2.6

BM2 Block Stopping Module7Connecting the signal inputsFor the BM2 to learn the signal status, the BM2 signal inputswill have to be wired correctly.The signal inputs are voltage-controlled. If no voltage isapplied to the signal input "Stop", the train will stop beforethe signal. If voltage is applied to this input, the train canpass, continue after a stop or slowly approach.If voltage is applied to the signal input "Slow approach", thetrain will slowly pass.The "Clear" input has priority over the "Slow approach"input. Therefore, if no voltage is applied to the "Clear" input,the train will be stopped in any event, even if voltage isapplied to the "Slow approach" input.You can use a control voltage between 8(AC)/11(DC) and24(AC/DC).12Green signal light(Clear)Yellow signal light(Slow approach)Figure 2TO34C

BM2 Block Stopping Module8Using light signalsSimply connect the BM2 signal inputs to the bulbs of thelight signal. When the light signal is set, the BM2 will knowhow to react.Connect the signal input "Clear" to the green bulb of yourlight signal. This way, the signal input is self-securing: Atrain can only pass if voltage is applied. This means that ifthe power supply of the signal fails, the train will be stopped.If you also want to use the signal input "Slow approach",simply connect the respective terminal to the yellow bulb ofthe light signal. Note: If voltage is applied to this input, theBM2 will ensure that the passing train is slowed down toslow approach.The "Clear" input has priority over the "Slow approach"input. Therefore, if no voltage is applied to the "Clear" input,the train will be stopped in any event, even if voltage isapplied to the "Slow approach" input.The table below shows the various possibilities:TrainLightbehavio signalurStopClearSlowapproachredgreengreen /yellowVoltage at Voltage ing form signalsForm signals are usually equipped with switches that can beused to switch off the track voltage of a track section in frontof a signal indicating "Stop". These switches can also beused to indicate the signal status to the BM2.The figure below shows the connection of the form signalswitches:8

BM2 Block Stopping ModuleTO9C1K2K14k7Figure 3The signal inputs are voltage-controlled which means thatyou will need an additional AC/DC power source between8(AC)/11(DC) and 24(AC/DC) V. This voltage must be fedinto location (1).The following applies to the K1 and K2 gnalshowsK1 switchK2 switchopenclosedclosedclosedclosedopenSince the "K2" switch (Slow approach) is always designed tobe open when the signal is at "Slow approach", a resistor(4k7, 1/4W), shown in Figure 3, must be installed. Theresistor is enclosed with the BM2.

BM2 Block Stopping Module10Testing the installationTo test the installation, you need a locomotive equipped witha decoder that supports the ABC technology, for example aGOLD decoder.Leave the BM2 signal inputs unwired for the first test. Assoon as it enters the braking section, the train should stopwith the set braking delay or braking distance. If you use arear-powered (pushed) train for this test, its leading coachmust be fitted with a power consumer.If the train does not stop, the set braking distance is probablytoo long or the braking section too short.If the train stops abruptly immediately after entering thedriving section, the connection between the BM2 and thetrack sections is probably faulty.If the first test was successful, you can finish wiring thesignal inputs and check whether the train passes a signalindicating "Clear", and slows down to the speed set in thedecoder if a signal indicates "Slow approach".Tips for useExtended slow approach sectionDo you want your train to stop in front of a signal indicating"Stop", while continuing slowly after a signal indicating"Slow approach"?No problem: Simply extend the braking section beyond thesignal's location, for example, beyond the points after thesignal.Set the constant braking distance in the decoder so that thelocomotive stops in front of a signal indicating "Stop". If thesignal indicates "Slow approach", the locomotive willcontinue slowly until the end of the braking section and, onlythen, accelerate to its original speed.10

BM2 Block Stopping Module11Driving sectionExtended braking sectionDirection of travelset brakingsectionPush-pull operationYou can also use the BM2 for push-pull operation.Preferably, the BM2 module will be used where the rearpowered (pushed) train is to stop. In this case, a BM1module suffices at the opposite stopping point.Using the BM2 at the end of a block sectionYou can use the BM2 module to complete a block section ofBM3 modules. In a typical case, the entry signal to a stationwould be at the end of a block section. By setting the entrysignal, you, as the conductor, determine whether an arrivingtrain may or may not enter the station.BrakingsectionDriving sectionBrakingsectionDriving sectionDirection of travelOBlock signalEntrysignalOT1 2CT2a 2bCThe BM2 has a control output designed for this purpose.Connect this output to the BM3 control input that controlsthe previous block.OTTOC

BM2 Block Stopping Module12Connecting the BM2 to a feedback module LR10112OUdLR101TIf you want to verify theoccupancy status ofbraking and drivingsections by means of thefeedback function of theDigital plus system,simply connect the BM2to a LR101 feedbackmodule: Connect output (O)to one of the eightinputs of the LR101, and output ( ) to theterminal ( ) of theLR101.As soon as a powerconsumer enters thedriving or brakingsections, the occupancystatus will be transmittedto the command stationvia the R-S bus.C8 7 6 5 4 3 2 1

BM2 Block Stopping Module13North American WarrantyLenz GmbH does everything it can do to ensure that its products are free fromdefects and will operate for the life of your model railroad equipment. From time totime even the best engineered products fail either due to a faulty part or fromaccidental mistakes in installation. To protect your investment in Digital plusproducts, Lenz GmbH offers a very aggressive 10 year Limited Warranty.This warranty is not valid if the user has altered, intentionally misused the DigitalPlus product, or removed the product's protection, for example the heat shrink fromdecoders and other devices. In this case a service charge will be applied for allrepairs or replacements. Should the user desire to alter a Digital Plus Product, theyshould contact Lenz GmbH for prior authorization.Year One: A full repair or replacement will be provided to the original purchaser forany item that that has failed due to manufacturer defects or failures caused byaccidental user installation problems. Should the item no longer be produced andthe item is not repairable, a similar item will be substituted at the manufacturer’sdiscretion. The user must pay for shipping to an authorized Lenz GmbH warrantycenter.Year 2 and 3: A full replacement for any item will be provided that has failed dueto manufacturer defects. If the failure was caused by accidental user installation oruse, a minimal service charge may be imposed. Should the item no longer beproduced and the item is not repairable, a similar item will be substituted at themanufacturer’s discretion. The user must pay shipping to and from the authorizedLenz GmbH warranty center during this portion of the warranty period.Year 4-10: A minimal service charge will be placed on each item that has faileddue to manufacturer defects and/or accidental user installation problems. Shouldthe item no longer be produced and the item is not repairable, a similar item will besubstituted at the manufacturer’s discretion. The user must pay shipping to andfrom the authorized Lenz GmbH warranty center during this portion of the warrantyperiod.Please contact your dealer or authorized Lenz GmbH warranty center for specificinstructions and current service charges prior to returning any equipment for repair.Hüttenbergstraße 2935398 Gießen, GermanyHotline: 06403 900 133Fax: 06403 900155info@digital-plus.deLenz Agency of North AmericaPO Box 143Chelmsford, MA 01824ph: 978 250 1494fax: 978 455 LENZhttp://www.lenz.comsupport@lenz.comThis equipment complies with Part 15 of FCC Rules. Operation is subject to thefollowing two conditions: (1) this device may not cause harmful interference, and(2) this device must accept any interference received, including interference thatmay cause undesired operation.Please save this manual for future reference! 2002 Lenz GmbH, All Rights Reserved

BM2 Block Stopping Module 8 8 Using light signals Simply connect the BM2 signal inputs to the bulbs of the light signal. When the light signal is set, the BM2 will know how to react. Connect the signal input "Clear" to the green bulb of your light signal. This way, the signal input is se

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