Grin Technologies Frankenrunner, Руководство пользователя

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Frankenrunner User Manual
Rev 1.0
5.8 Virtual Electronic Freewheeling
Dashboard/Basic Setup tabs
The Frankenrunner controller can be set to inject a small amount of current into
the motor, even when the throttle is off. When properly tuned, this current
injection can overcome the drag torque present in hub motors capable of
regenerative braking, allowing them to spin freely when pedaling without any
throttle.
To setup this feature, we recommend first going to the “Dashboard” tab. With the
system running under throttle with no load on the motor, note the “Motor Current”
value.
Navigate back to the “Basic Setup” tab, check “Enable Virtual Freewheeling,” and
set “Electronic Freewheeling Current” to a value slightly less than that of the
observed unloaded motor current. The “Motor Stall Timeout” setting determines
when this injection current will stop once the motor comes to a stop.
Once the values for “Virtual Electronic Freewheeling” are set, the controller will
draw about 10 to 40 watts in order to overcome the motor’s drag. Regenerative
braking should recapture more energy than lost due to the injection current.
Users of mid-drive motors can also use this feature to keep the drive train always
engaged, eliminating windup delay and harsh clutch engagement when throttle is
applied and the motor comes up to speed.
5.9 Motor Temperature Sensing
Temperature Setup tab
The Frankenrunner has the ability to sense motor temperature and prevent the
motor from overheating via thermal rollback. An entire tab in the software suite is
dedicated to the motor thermal rollback settings. A six point table maps the
voltage that corresponds to the temperatures of 0°, 25°, 50°, 75°, 100°, and
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