Motor Chopper - BONFIGLIOLI Agile Operating Instructions Manual

7.10.5 Motor chopper

507 Trigger Threshold
The field-orientated control systems for asynchronous motors (configuration 410 FOC) contain the
function for adapted implementation of the generator energy into heat in the connected three-phase
machine. This enables the realization of dynamic speed changes at minimum system costs. The torque
and speed behavior of the drive system is not influenced by the parameterized braking behavior. The
parameter
Trigger Threshold
chopper function.
Parameters
No. Description
507 Trigger Threshold
Set parameter
Trigger Threshold
mains can generate and the maximum admissible DC link voltage of the frequency inverter.
U 1.1 2 U Ud
⋅ ⋅ < <
Mains dMC
If the parameter
Trigger Threshold
the motor chopper cannot become active, the motor chopper is switched off.
If the set
Trigger Threshold
ate, error message F0706 (chapter 13.1.1 "Error messages") is displayed when the frequency inverter
is switched on.
The motor chopper function only works if activated via voltage Controller
670. See chapter 7.9.2 "Voltage controller".
Mode
For synchronous motors (
deactivated to prevent damages to the motor. The other functions of the voltage con-
troller are not affected by this.
Please note that by default the Motor chopper
Threshold
up fittingly for your application.
Please check chapter 7.10.4 "Brake chopper and brake resist".
Agile
Operating Instructions
507 of the DC link voltage defines the switch-on threshold of the motor
Min.
AGL202 225.0 V 1000.0 V
AGL402 325.0 V 1000.0 V
507 such that it is between the maximum DC link voltage which the
max
507 is set larger than the maximum admissible DC link voltage,
507 is smaller than the maximum DC link voltage the mains can gener-
Configuration
506 are set up with different values. Check, that the two thresholds are set
244
06/2013
Setting
Max. Fact. sett.
400.0 V
800.0 V
30 = 610), the motor chopper function is
Trigger Threshold
Parameter descriptions
Operation
507 and the
Trigger
Special functions