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4.2.2 Analog velocity presetting
In this operating mode, the drive velocity can be controlled with set value presetting via an analog
voltage.
Setting: CONTMOD and SOR1 operating mode (velocity presetting via voltage at analog input) or
SOR2 (velocity presetting via PWM signal at analog input).
Profile and controller parameters are executed via the FAULHABER basic setting commands (see
chapter 5.1.3 "General parameters"). In particular the acceleration values AC and DEC, the current
limitation values LPC and LCC, as well as the controller parameters POR and I, must be adapted to
the respective application. The analog velocity control can be further configured using the param-
eters described below:
Setting the scaling factor (maximum speed):
Target velocity at 10 V.
Command Function
Description
SP
Load Maximum Speed
Load maximum speed.
Setting applies to all modes (except VOLTMOD)
Unit: rpm
Example:
Set maximum speed so that with 10 V at the analog input the target velocity is 5 000 rpm:
SP5000
Setting the minimum velocity:
Minimum velocity that is preset when the start voltage is present.
Command Function
Description
MV
Minimum Velocity
Specifies the lowest velocity
Unit: rpm
Example:
Set minimum velocity to 10 rpm:
MV10
Setting the start voltage
Voltage from which the drive is to start.
Command Function
Description
MAV
Minimum Analog Voltage
Specifies the minimum start voltage
Unit: mV
Example:
The drive is only to start moving with voltages over 100
mV or below -100 mV at the analog input:
MAV100
Advantage:
As 0 mV is usually difficult to set at the analog input,
0 rpm is also not easy to implement. The dead band
produced by the minimum start voltage prevents the
motor from starting as a result of small interference
voltages.
4 Functional Description
4.2 Velocity control
ntarget
