Torque Controller - BONFIGLIOLI Agile Operating Instructions Manual

Parameter descriptions
7.9.5.2

Torque controller

The sensorless field oriented control for ASM (configuration 410) and the sensorless field oriented
control for PSM (configuration 610) can be used for sensorless torque control alternative to the speed
control. The torque control is usable above the
the current impression is active with the current reference frequency as reference value. In this case
the torque is not controlled, but results depending on the load and the
achieve a starting in torque control, the reference frequency should be set higher than
624. This is guaranteed in example by setting
Limit
624.
it
f < 624: Current impression
Frequency Limit
f ≥ 624: Direct Torque Control
Frequency Limit
The 624 is set automatically during the motor setup.
Frequency Limit
The energy saving function shouldn't be used when using the Torque controller, since it influences the
control dynamics significantly.
An overview of important parameters for using the Torque Controller is compiled in chapter 6.7.8
"Torque control".
7.9.5.2.1 Torque reference
The reference torque can be specified as follows:
Set parameter
•
n-/T-Control Change-Over
this on.
Via parameter
•
Reference Percentage Source 1
a source for the reference torque.
For example:
− The reference torque can be set via the arrow keys of the operator panel if the following setting is
selected:
Reference Percentage Source 2
− The reference torque can be set via multifunction input 1 (MFI1A) if the following setting is select-
ed:
Reference Percentage Source 1
− 100 % Torque refer to the calculated Torque from
372 (Motor nominal speed).
Rated Speed
224 shows the actual torque.
Parameter
Torque
Select an applicable operation mode for parameter
ter 7.3.5 "Flying Start".
7.9.5.2.2 Upper limit and lower limit of the frequency in Torque Control
767 Frequency Upper Limit
768 Frequency Lower Limit
In many cases limitation of the speed is required in the operating points with reduced or without load
torque, because the speed regulates itself to the torque reference and the load behavior. To avoid an
unintentional speed (mostly too high speeds, in some cases also too small speeds and avoidance of
current impression), the frequency is limited by
768 by the speed controller.
Limit
As from the limit value the drive is controlled to maximum speed (
768), which corresponds to the behavior of the speed controller. Additionally,
Frequency Lower Limit
the controller limits the speed to
ler – changes in the speed controller affect the speed behavior in the limit area of the 3 mentioned
parameters.
In the current impression, the speed is limited additional to
Torque Control this limit is not active.
Control functions
Frequency Limit
Minimum frequency
164 to "6 - On" or link it to a digital signal and switch
476 or
494 = "5 - keypad motorpoti (factory setting)".
476 = "1 - analog value MFI1A (factory setting)".
Rated Mech. Power
Operation Mode Flying Start
Frequency Upper Limit
419. This limitation is set by the speed control-
Maximum Frequency
231
624. Below the
Frequency Limit
Starting current
418 >
Reference Percentage Source 2
376 (Motor power) and
645. Refer to chap-
767 and
Frequency Upper Limit
418 – in Direct
Minimum Frequency
06/2013 Operating Instructions
624
623. To
Frequency
Frequency Lim-
494, select
Frequency Lower
767 and
Agile