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Sevcon Dragon8 - Inching

Sevcon Dragon8
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System design
Doc. # 177/52705
Rev. 1.0
69
Inching
WARNING: Ensure inch switches are only mapped to digital inputs when required. Activation of
these inputs can cause a drive condition to occur.
Inching allows an operator to manoeuvre a vehicle, at low speeds, towards a load. Inching can be
initiated with one switch. A time-out is used to prevent the vehicle from continuing to drive indefinitely
if the switch gets stuck or goes short circuit.
To configure inching:
Ensure forward and reverse inching switches have been mapped to two digital inputs.
Specify an inching speed (0% to 25% of the full speed of the vehicle) at 2905
h
sub-index 1. This is
either a speed target in speed mode, or maximum speed in torque mode.
Specify an inching throttle (0 to 100%) at 2905
h
sub-index 3. This gives a torque target in torque
mode. This is not used in speed mode.
Specify a time-out (0.1 s to 5.0 s) at 2905
h
sub-index 2.

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