Short Address Programming Note When programming the short address (CV01) in your DZ121, the decoder will automatically set CV19 to 0, CV29 to 0, CV 55 to 80, CV56 to 30 & CV57 to 0. This is done to insure compatibility with DCC systems that only recognize short addressing (2 digit mode). When using long addressing (4 digit addressing) these CV's are not affected.After changing the short address (CV01), you will probably want to change CV29 to 06 or another appropriate value based on your operations. You can do this on the programming track or, if you forget, you can ...
Speed stabilization is a feature that causes the decoder to run the locomotive at a somewhat constant speed according to the throttle setting. This means that if you set your throttle to 21% of total speed, the decoder will force the motor in the locomotive to maintain a constant speed at that level no matter what the track gradient or the load on the locomotive. The SD9 is an example of a US prototype that employed a load compensating type of control technology. Many modern European locomotive prototypes use some form of load compensation of the prime-mover in response to speed ...
Your locomotives look like the real thing, Digitrax LocoMotion™ System makes them run like the real thing, too! 128 speed step control. Smooth deceleration to stop before changing direction when locomotive is reversed. No sudden, non-prototypical stops! Torque compensation for the smoothest operation ever. Momentum with acceleration and deceleration settings. Set normal direction of travel for your loco. Switching speed feature for quick access to slower switching speeds. Simple 3 step speed tables are easy to set up. Advanced 28 step speed tables with 256 level resolution. Scaleable speed stabilization feature. ...
Scaleable speed stabilization (back EMF) compensates for load by providing more voltage to the motor. If there is a mechanical problem with the locomotive that greatly increases this load you can prevent damage to motor by setting CV57 to limit how much throttle can be added due to BEMF.Digitrax Scalable BEMF uses CV57 to control how much compensation authority the BEMF control loop has. The higher CV57 is (0-15 range) the more back-emf the control loop can crank in; a value of 0 effectively turns off BEMF compensation. The value in CV57 takes into account the different throttle levels as ...
The DN142 comes from the factory with BACK EMF SPEED STABILIZATION (BEMF) turned off. Follow this procedure to turn it on and to adjust it. Later generations of Digitrax mobile decoders do not require this procedure. Activation: To activate the BEMF feature, change CV57 to a value of 06. This will give good performance with most brands of locomotives. If the locomotive surges while using BEMF use a lower value for CV56. It may also be necessary to adjust CV's 55, 56, & 57 to get the motor performance desired for your particular locomotive. Adjustment: 1. Program CV57 (Droop control) ...
Q: Since the back emf torque compensation feature make consisting a real headache, I would like to know how to switch that feature off. Prototype loco's don't have such a thing so that slowing on a grade isn't really a bad thing in a model, either. A: You can turn turn the speed stabilization on or off with CV57. The CV value range for CV57 is 0-15. If CV57 = 0, speed stabilization is OFF. If CV57 = 15, speed stabilization is fully on. All values in between let you scale how much speed stabilization you will use with each ...
Some Digitrax decoders offer scalable speed stabilization (also called back EMF) control to help smooth out operation in the low end of the speed range. This feature can be beneficial especially in N scale switching situations especially when the decoder can select how much of this effect to implement (scalable speed stabilization). Speed stabilization is a decoder feature that can be used with any DCC system. Most Digitrax decoders that support this feature are shipped with scalable speed stabilization turned off so, to use it you will need to set program them to use this feature. Other Digitrax decoders are ...