15
Configuring the Velocity Control
Command
Function
Description
Example
MAV *)
Minimum Analog
Sets the minimum
MAV500
Voltage
analog voltage
GMAV
Get Minimum
Calls up the minimum analog
GMAV
Analog Voltage
voltage over the RS-232 port.
➔
25
Setting the Minimal Analog Voltage
Example: MAV100 [return]
➔
100 mV is the necessary minimum
starting voltage. The motor will
not turn if the voltage ranges from
–99 mV to 99 mV.
Default Setting: MAV25
Advantages:
While 0 mV at the analog input is normally very
difficult to achieve, 0 rpm can not be accurately set. Setting the
minimal analog voltage > 0 prevents this from being a problem.
The resulting dead zone is also useful becasue the motor will not
start up when small disturbance voltages occur.
Diagram 6: Characteristic curve with a given analog velocity