14 ADL300 • Functions description and parameters list
4 - DRIVE CONFIG
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
4.1 550 Save parameters BIT 0 0 1 RW FVS
Any changes to parameter values immediately aect drive operations, but are not automatically saved in the permanent
memory.
The “Save Parameters” command is used to save current parameter values in the permanent memory.
Any changes that are not saved will be lost when the drive is switched o.
To save parameters follow the procedure described in STEP 9 of the Startup wizard.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
4.2 552 Regulation mode ENUM SSC 0 3 RWZ FVS
The ADL300 is capable of operating with dierent control modes:
0 SSC (Sensorless Scalar Control)
1 Flux vector OL
2 Flux vector CL
3 Autotune
The open loop SSC mode is the simplest type of asynchronous motor control, as the only parameters required are the
rated voltage, current and frequency of the motor.
The open loop SSC control mode is factory-set and does not require any speed feedback. The natural variation in speed
generated by machine load induction (slippage) can be compensated using Slip comp and Slip comp lter.
In V/f mode a single drive can be used to control several asynchronous motors, even of dierent sizes, connected in
parallel, provided the sum of the currents of the single motors is less than the drive rated current. If using several motors
connected in parallel, be sure to provide adequate thermal protection for each single motor.
Closed loop control is also possible in the SSC mode. It requires a speed reading by a digital encoder on the motor shaft;
to enable encoder feedback, you must set parameter 2444 Slip comp mode =1.
An optional card is necessary in order to acquire the encoder signals. The speed feedback supplied by the encoder is used
to compensate motor slippage in the dierent load conditions, to achieve accurate control and greater precision of the
actual motor speed.
With the sensorless vector control (Flux vector OL) mode, high speed and torque precision can be achieved at low mo-
tor rpm. The drive has a powerful algorithm that uses a self-tuning procedure to obtain all the electric measurements of the
motor. This allows the speed and position of the motor shaft to be estimated, enabling operation similar to that of a drive with
feedback, both in terms of the response in torque to load variations, and of the regularity of rotation even at very low rmp.
In the eld oriented vector mode (Flux vector CL) an encoder is required for closed loop feedback. With this mode it is
possible to achieve extremely high dynamic responses thanks to the regulation bandwidth, maximum torque even with the
rotor blocked, speed and torque control. Numerous regulation parameters can be used to adjust the drive to each specic
application, for instance adaptive gains, system inertia compensation, etc..
If the Startup wizard procedure is not used, self-tuning of the motor parameters is possible in the self-tuning mode (Autotune).
This procedure must be used for both self-tuning with the engine standing still and with the motor turning.
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
4.3 554 Access mode ENUM Easy 0 1 RW FVS
0 Easy
1 Expert
The Easy mode gives access to a list of parameters that can be used for rapid drive commissioning. This type of congu-
ration is suitable for the majority of applications.
Setting the parameter to Expert gives access to all the parameters in the rmware. This mode allows an extremely high
level of customization to be achieved in order to exploit the potential of the ADL300 to the full.
On fw 4.0.0 the change from Easy to Expert can be protected by a dedicated password (PAR 566 Passwd expert). This
function is available only via keypad and not via Gefran_eXpress.