TM 5-3895-374-24-1
Configuration, special functions, settings
Special functions
The following functions enable adaptation of the speed controller to certain special applications
Functions
Selection
Factory setting
Description
U/F law
Linear N
Linear N
Selection of the voltage / frequency ratio
Quadratic P
Linear ratio adapted to loads at constant
Linear F
torque with self-adaptation to the motor load
Linear L
N: standard applications
F: machines with fast cycles, machines with
stop positioning, machines with high inertia
L: special motors (tapered rotor motors, pole
change motors, high torque motors), hoisting
movements
Quadratic: ratio adapted to quadratic torque
loads (fans or centrifugal pumps) Enables
reduction of current and motor noise
Rated motor voltage
Automatic
Automatic
Selection of rated motor voltage, at 50 or
220/240 V
according to mains supply
60 Hz
380/415 V
ATV-452...M : 220 V or 240 V
440/460/500 V
ATV-452...: 380 V or 415 V
525/575 V
ATV-452...N: 440 V, 460 V or 500 V
ATV-452...S: 525 V or 575 V
Motor thermal protection
Yes / No
Yes
Function enabled
normal operation of the
Moto-ventilated motor
thermal protection
Function disabled
the tripping of the thermal
protection is cancelled, the thermal state calcu-
lation is maintained
Moto-ventilated motor the thermal protection
is validated and does not take into account the
derating depending on the speed
Frequency loop
Yes / No
Yes
Frequency loop disabled enables reduction of
the time constants during transient phases, and
improvement of the torque performances
Caution Inhibiting of this function can lead to
the motor stalling if the required torque is too
high.
(page 3-239)
