• Traction baseline profile: the default and highest set of values (2920
h
).
• Drivability select 1 profile: invoked when drivability select 1 switch is active (2921
h
) or an
alternative trigger is active (see below).
• Drivability select 2 profile: invoked when drivability select 2 switch is active (2922
h
) or an
alternative trigger is active (see below).
The traction baseline profile contains the default maximum values. All of the remaining profiles apply
lower, modifying values to the baseline profile. BDI and service profiles, when configured, are
automatically applied by the software under preset conditions. For example you may want to limit the
acceleration and maximum speed of a vehicle when the battery gets low to maximize the operating time
before recharge. The remaining profiles are applied by the driver with a switch.
User profiles can also be invoked by internal software triggers, such as BDI low, service required or low
speed. These can be selected to suit specific application requirements. Set the profile triggers in 2931
h
.
Speeds in driveability profiles are scaled according to the vehicle gear ratio (2915
h
). This is used to
convert speed in RPM to any other preferred unit such as KPH or MPH. To remove this scaling and
leave driveability profile speeds in RPM, set 2915
h
,3 to 1.
Torques in driveability profiles are in 0.1%/bit resolution. These are converted to Nm using the motor
rated torque value at object 6076
h
.
Ramp rates in driveability profiles are in either RPM/s for speed mode, or %/s for torque mode. In speed
mode, RPM/s becomes “User Defined Units” / s if the gear ratio is used to rescale the driveability
profile speeds.
Speed limit ramp rates are only used in torque mode and are in RPM/s (or user defined units / s).
WARNING: In addition to the speed limit ramp rates in the profiles, 291Eh can be used to
configure safety limits on speed limit ramping. The installer should set these ramp rates to
suitable levels to ensure speed limits cannot ramp faster than could actually happen on a vehicle.
This can protect against harsh braking if traction wheels are momentarily locked.
Smoothing Output Torque
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