Technical information

5 – PARAMETER DESCRIPTIONS
49
P10 Start Mode CFN 01
LCD Display
CFN: Start Mode
01 Current Ramp
Range OLrP, Curr, tt, Pr (Default Curr)
Description The Start Mode parameter allows the selection of the optimal starting ramp profile based on the
application.
Options LED LCD
OLrP: Voltage Ramp Open Loop Voltage acceleration ramp
Curr: Current Ramp Current control acceleration ramp. The closed loop current control
acceleration ramp is ideal for starting most general-purpose motor
applications. Examples: crushers, ball mills, reciprocating
compressors, saws, centrifuges, and most other applications.
tt: TT Ramp TruTorque control acceleration ramp. The closed loop TruTorque
control acceleration ramp is suitable for applications that require a
minimum of torque transients during starting or for consistently loaded
applications that require a reduction of torque surges during starting.
Examples: centrifugal pumps, fans, and belt driven equipment.
Pr: Power Ramp Power (kW) control acceleration ramp. The closed loop power control
acceleration ramp is ideal for starting applications using a generator or
other limited capacity source.
See Also Initial Current 1 parameter on page 45
Maximum Current 1 parameter on page 46
Ramp Time 1 parameter on page 47
Kick Level 1 parameter on page 52
Kick Time 1 parameter on page 52
Initial Voltage/Torque/Power parameter on page 50
Theory of Operation section 8.3, Acceleration Control, on page 118