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Sevcon Dragon8 - Page 73

Sevcon Dragon8
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System design
Doc. # 177/52705
Rev. 1.0
65
Figure 27 Speed mode acceleration/deceleration
Figure 28 Torque mode acceleration/deceleration
In Torque mode, the acceleration and deceleration rates control the rate of change of torque. In Speed
mode, the acceleration and deceleration rates control the rate of change of speed.
You can select reverse while driving in the forward direction with your foot still on the throttle. In this
situation the controller applies braking in the form of a direction change deceleration rate down to zero
speed. It then applies a direction change acceleration rate to increase the vehicle’s speed in the reverse
direction up to the set maximum speed as shown above.
Configure the following drivability profiles to suit your application (each containing the same set of
parameters):
Time
Speed Target
Throttle
Accel Rate
Decel Rate
Dir Chg DecelRate
Dir Chg AccelRate
Ntrl Brake
Decel Rate

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