B&R ACOPOSinverter P84, User Manual

Page: 103 / 405

Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 103
2.5.10.5.3 Conversion formula SERVO_V_MAX_OUTPUT in Hertz (resolution 0-TFR)
In this configuration, the default value is specified in hertz [Hz].
The resolution is not predefined in this case; however, it can be influenced by the user. This is done by set-
ting the "TFR Max frequency [0.1 Hz]" configuration parameter in the ACOPOSinverter I/O configuration under
"ACOPOSinverter ➜ DRC - Motor control".
The default value is a data point of type "INT" for this configuration as well; however, it corresponds to a frequency
of 0 up to the value of the TFR parameter.
Note:
To scale the default value to 0 to TFR, the user must set bit "CMI_Output_09 → Definition of the fre-
quency reference (LFr) and output frequency (rFr) unit(0 = 0.1 Hz, 1 = Standardized value 16 signed
bits based on the maximum frequency)" to "TRUE".
The remainder of the calculation is identical to the configuration described above with the default value in Hertz.
Example
SCALE_LOAD_UNITS = 1000
SCALE_LOAD_MOTOR_REV = 1
Number_Polepairs = 2
2.5.10.6 Parameter AUt
To improve ACOPOSinverter P84 precision, a tuning must be performed.
Operating the motor on an ACOPOSinverter P84 without tuning is not recommended.