INITIAL PROOF!!!!
NOT CHECKED FOR ACCURACY!!!!
> How to set the voltage span potentiometers with the "No Speed = No load"
firmware upgrade.
>
> Upper span pot: P2
> Controls "power off" voltage on the MDST-6 board, usually the left side board
and the board "without heat sinks".
> With everything connected as normal the physically upper span pot is adjusted
so that no voltage is going to the brake when the roller not turning.
>
> To check it, there should be a volt meter connected to the connector that the
brake unit is attached to.
> The center connector of the blue box has a red, black and green lead.
> Connect the meter to the red and black leads and have the meter set to DC
volts.
>
> The computer's EC997 software DAQ dialog box should be open and the slider
control should be set to zero.
>
> DC voltage is adjusted on the MDST-6 board so that when slider control is at
zero, there is no voltage being applied to the EC brake.
> Turn pot clockwise till you read voltage, then counterclockwise till you just
reach 0 vdc.
>
........................................................................................................................................
>
> Lower span pot: P1 (controls maximum brake voltage applied to EC brake,
maximum = 60 vdc during testing)
>
> First remove power to the blue or grey PAU box for safety.
>
> Disconnect the red and blue leads on the right side KBMM circuit board. HIGH
VOLTAGE!!
>
> You are testing the MDST-6 circuit board's MAX output to the right KBMM
circuit board.
>
> EC997 software: DAQ dialog box open, load slider all the way to left, at zero.
> Attach the volt meter to the, now disconnected, red (P2) and blue (P1) leads
from the left MDST-6 circuit board.
> DC Voltage.
> Secure voltmeter leads safely to the two leads.
> Reattach power to the blue box.
>
> The MDST-6 will output to the leads .8 vdc
>
> Usually, it reads about 0.8 volts. The KBMM board, when in-circuit will drop
the voltage ~.8 volts and that's how you get 0 vdc to the EC brake at rest.
>
> Start a bike and put it in top gear and let it idle, spinning the drum. This
accommodates the new "No Speed = No Load" feature.
>
> The EC brake cannot come on with the leads not connected to the right KBMM
circuit board, and you can manually change the control voltage from the MDST-6
board when you are manually controlling the brake through the software's brake
slider in the DAQ dialog box.
>
> Move the slider in the DAQ dialog box to it highest setting.
> Turn the lower MDST-6 P-1 pot so the reading on the meter is 6.7 vdc.
> Move the slider back to zero.
> The meter should read 0.8 volts.
>
> Turn the bike off.
>
> Remove power to the blue box for safety.
>
> Reattach the red and blue leads to the KBMM board.
> Reattach power to the blue box.
> Perform a dyno test with the meter connected to the brake connector.
> We are going to watch no load and full load voltage.
>
> The voltage should never go higher than 50 vdc even with a large 140 True HP
bike and should read zero when the roller is stopped.
>
> Call or write me for help.
> Let me know if it went well.
> .................................................................
>
> The KBMM board changes the computer's low amperage 0-5 vdc "brake control
signal into a high amperage 0-60 vdc signal to make the EC brake to work
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