Technical information
Table Of Contents

5 – PARAMETER DESCRIPTIONS
50
P11 Initial Voltage/Torque/Power CFN 08
LCD Display
CFN:Init V/T/P
08 25 %
Range 1 – 100 % of Voltage/Torque/Power (Default 25%)
Description Start Mode set to Open Loop Voltage Acceleration:
When the Start Mode parameter is set to open-loop voltage acceleration, this parameter sets the
starting point for the voltage acceleration ramp profile. A typical value is 25%. If the motor starts
too quickly or the initial current is too high, reduce this parameter. If the motor does not start rotating
within a few seconds after a start is commanded, increase this parameter.
Start Mode set to Current Control Acceleration:
Not used when the Start Mode parameter is set to Current control acceleration. Refer to the Initial
Current 1 parameter to set the initial current level.
Start Mode set to TruTorque Control Acceleration:
When the Start Mode parameter is set to TruTorque acceleration, this parameter sets the initial torque
level that the motor produces at the beginning of the starting ramp profile. A typical value is 10% to
20%. If the motor starts too quickly or the initial torque level is too high, reduce this parameter. If
the motor does not start rotating within a few seconds after a start is commanded, increase this
parameter. If the value is set too low a “No Current at Run” fault may occur during acceleration.
Note: It is important that the Rated Power Factor parameter is set properly so that the actual initial
torque level is the value desired.
Start Mode set to Power Control Acceleration:
When the Start Mode parameter is set to Power controlled acceleration, this parameter sets the initial
motor power (KW) level that will be achieved at the beginning of the starting ramp profile. A typical
value is 10% to 30%. If the motor starts too quickly or the initial power level is too high, reduce this
parameter. If the motor does not start rotating within a few seconds after a start is commanded,
increase this parameter. If the value is set too low a “No Current at Run” fault may occur during
acceleration.
Note: It is important that the Rated Power Factor parameter is set properly so that the actual initial
power level is the value desired.
See Also Maximum Torque/Power parameter on page 51
Initial Current 1 parameter on page 45
Ramp Time 1 parameter on page 47
Start Mode parameter on page 49
Rated Power Factor parameter on page 82
Theory of Operation section 8.3, Acceleration Control, on page 118