Technical information

5 – PARAMETER DESCRIPTIONS
51
P12 Maximum Torque/Power CFN 09
LCD Display
CFN:Max T/P
09 105 %
Range 10 – 325 % of Torque/Power (Default 105%)
Description Start Mode set to Open Loop Voltage Acceleration:
Not used when the Start Mode parameter is set to open-loop voltage acceleration. When in open loop
voltage acceleration mode, the final voltage ramp value is always 100% or full voltage.
Start Mode set to Current Control Acceleration:
Not used when the Start Mode parameter is set to Current control acceleration mode. Refer to the
Maximum Current 1 parameter to set the maximum current level.
Start Mode set to TruTorque Control Acceleration:
When the Start Mode parameter is set to TruTorque acceleration, this parameter sets the final or
maximum torque level that the motor produces at the end of the acceleration ramp time. For a loaded
motor, the maximum torque value initially should be set to 100% or greater. If the maximum torque
value is set too low, the motor may not produce enough torque to reach full speed and may stall. On
lightly loaded motors, this parameter may be reduced below 100% to produce smoother starts.
Note: It is important that the Rated Power Factor parameter is set properly so that the desired
maximum torque level is achieved.
Start Mode set to Power Control Acceleration:
When the Start Mode parameter is set to Power controlled acceleration, this parameter sets the final
or maximum power (KW) consumption level that will be achieved at the end of the ramp time. For a
loaded motor, the maximum power value initially should be set to 100% or greater. If the maximum
power level is set too low, the motor may not produce enough torque to reach full speed and may
stall. On lightly loaded motors, this parameter may be reduced below 100% to provide for smoother
starts.
Note: It is important that the Rated Power Factor parameter is set properly so that the actual
maximum power level is achieved.
See Also Initial Voltage/Torque/Power parameter on page 50
Maximum Current 1 parameter on page 46
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