Serge NOEL
160 lines
8.0 KiB
Plaintext
160 lines
8.0 KiB
Plaintext
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<title>Comprehensive Programmer - Speed Control Pane</title>
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<h1 id="Top">DecoderPro® Comprehensive Programmer</h1>
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<h2>Basic Speed Control Pane</h2>
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<div class="dp-right">
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<p><a href="Comp_Motor.shtml">Previous |</a> <a href="Comp_Speed_Talble.shtml">Next</a></p>
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<p><a href="index.shtml#Advanced%20Programmer">Back to Index</a>
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<hr>
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<p>The<strong>Basic Speed Control pane</strong> looks very complicated, but it can be one of
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the most significant in improving the performance of your locomotive fleet.</p>
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<h1 class="dp-ctr"><img style="width: 726px; height: 389px;" src=
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"images/Speed_Table_Main.png" alt="Speed pane">
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</h1>
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<p>Let's look first at the top of the pane: You now have the option of using Basic Speed
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Control (this pane) or Speed Table to control your locomotive's speed. Which ever one you
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select last and write to your decoder will be the method used for speed control. To select
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this pane:</p>
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<p>Depending upon the decoder manufacturer, any of these settings could be on this pane.</p>
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<p>Capability to select the <strong>Use Vstart, Vmid, Vhigh</strong> settings..</p>
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<p>Three important CVs are programmed in this pane Vstart, Vmid and Vhigh. They work together
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to make a very basic three point speed table. On some decoders these settings may be labeled
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differently and all three may not be available. DecoderPro will show the correct options for
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your selected decoder.</p>
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<p><strong>Vstart</strong>(<strong>Start Voltage</strong>) is the voltage at the first speed
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step. If your locomotive didn't start moving until there were three volts on the track with
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analog power, this lets you set up the decoder to give it 2.99 volts right away, so it will
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start moving when you advance the throttle.</p>
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<p><strong>Vhigh(Top Voltage, Max Voltage, Maximum Voltage)</strong> is the maximum amount of
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power the locomotive will get from the decoder. If your locomotive looks like Chuck Yeager's
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X-1 at full throttle, then you can trim the top speed down to a more reasonable scale
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level.</p>
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<p><strong>Vmid</strong>(<strong>Mid Voltage, Midpoint Voltage)</strong> lets you configure
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the slope between <strong>Vstart</strong> and <strong>Vhigh</strong> a bit, so that if your
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locomotive reaches full speed at 5 volts, you can stretch out the lower end of the curve to
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get more fine control in a useful speed range.</p>
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<p>If you are having problems with unpredictable speeds with your locomotives, check these
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settings. Sometimes, one or more of these settings have been changed accidentally (usually
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due to an error in programming CV's with a throttle), leading to very odd speed performance.
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In particular, if the <strong>Vmid</strong> is lower than <strong>Vstart</strong> or higher
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than <strong>Vhigh</strong>, results can be highly unpredictable. DecoderPro will not let you
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make this mistake.</p>
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<p><strong>Forward Trim</strong> and <strong>Reverse Trim</strong> allow you to compensate
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for differences in the forward speed and reverse speed of the locomotive. Most model
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locomotives do not run at exactly the same speed forward and backward due to the motor
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mechanics and the gear train to the wheels.</p>
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<p>The settings for these controls are not as intuitive as you might think. A setting of 0 in
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these CVs turns them off. However, a setting of 128 in either of them will have no visible
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effect! To make the forward and reverse trim effective, raise the value above 128 to increase
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speed, and lower it below 128 to decrease speed in this pane. The Forward and Reverse Trim
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does not work the same for all decoders, with variations between manufacturers.</p>
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<div class="BOXIT">
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<h3>Some suggestions on using the basic motor controls and programming on the main.</h3>
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<p>Unless you want to get into some precision speed matching, you probably won't need to
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use the <strong>Speed Tables</strong> you'll see on the <a href="Comp_Speed_Talble.shtml"
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target="_parent"><strong>Speed Table pane</strong></a>- you'll be able to accomplish much
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of what you want using just <strong>Kick start</strong> (<a href=
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"Comp_Motor.shtml">previous pane</a>), and <strong>Start Volts</strong>, <strong>Mid
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Volts</strong>, and <strong>Max Volts</strong> if they are available in this pane... but
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how to do this?</p>
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<p>Start with the <strong>Kick start</strong> value, and <a href=
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"Programmer_OpsMode.shtml">Programming on the main</a> rather than the programming track.
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Set the locomotive to be programmed on throttle step 1. If it moves <span class="ACCENT">at
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all</span>, don't change the <strong>Kick start</strong> value. If it doesn't move, slowly
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step up the throttle until it does. Then, turn the throttle down. If the locomotive stops
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at the same setting it started, you won't need to set the <strong>Kick start</strong>
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value. However, if it continues to run at a slower speed than it would start, then increase
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the <strong>Kick start</strong> value until it will start and run at its slowest possible
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speed.</p>
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<p>Now, if the locomotive isn't running at throttle step 1, increase the <strong>Start
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Volts</strong> value (and write it) without changing the throttle until the locomotive
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<span class="ACCENT">barely</span> crawls... you can usually get this down to a speed of a
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tie a minute or so if you like! Remember, you are doing this in "<strong>ops
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mode</strong>", so you can make these changes while the locomotive is actually running.
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Don't forget to write the value changes to the decoder - they won't take effect unless you
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do.</p>
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<p>Now, set the top speed of the locomotive. Run the throttle up to full, and lower the
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<strong>Max Volts</strong> value (and write it) until the locomotive runs at the maximum
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speed you want it to reach, but don't forget that adding a train will slow it down!</p>
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<p>Finally, set the <strong>Mid Volts</strong> value about half-way between <strong>Start
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Volts</strong> and <strong>Max Volts</strong>. Setting it above or below the median of the
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<strong>Start Volts</strong> and <strong>Max Volts</strong> values will give you a crude,
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three point speed table.</p>
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<p>There are no hard and fast rules for the exact numbers to use. Even identical
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locomotives with identical decoders will need different numbers, due to variances in motors
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and drive trains. Experiment with the settings - DecoderPro makes it easy!</p>
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<p>Note: Not all decoders will have Start, Mid and Max Volts, but will have some version of
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this which will be displayed by DecoderPro for the specific decoder.</p>
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</div>
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<hr>
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<p>If you select <a href="Comp_Speed_Talble.shtml"><strong>Speed Table</strong></a> all of
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the settings in this pane are ignored.<br></p>
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<hr>
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<div class="dp-right">
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<p><a href="Comp_Speed_Talble.shtml"></a> <a href="Comp_Motor.shtml">Previous |</a>
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<a href="Comp_Speed_Talble.shtml">Next</a></p>
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<p><a href="index.shtml#Advanced%20Programmer">Back to Index</a>
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</p>
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