Danfoss MCO 305 Design Manual page 191

MCO 305 Design Guide
32-70 Scan Time for Profile Generator
PROFTIME
Option
1 ms
2 ms
3 ms
4 ms
5 ms
Function
The Parameter gives the possibility to set the
sample time for the profile generator, which is
independent of the sample time for the PID
controller.
For demanding control tasks in the background
(SYNCP, SYNCM, SYNCC), the execution time of the
APOSS program may rise drastically. In such cases,
the scan time of the profile generator can be
increased to [2] in order to have more time avai-
lable for the APOSS program. Values higher than
2 ms provide hardly any benefits.
NB!:
The VEL, ACC, and DEC has to be set
after a SET PROFTIME command.
32-71 Size of the Control Window (Activation)
REGWMAX
Range
0 – MLONG [qc]
Function
The parameters REGWMAX and REGWMIN are used
to turn the position control within defined areas
( control windows ) on and off: REGWMAX indicates
the size of the window outside of which the control
should begin again.
Control ON
REGWMIN Target
REGWMAX
Control OFF
default setting
__ Parameter Reference __
[1]
[2]
[3]
[4]
[5]
0
Control ON
Position
REGWMAX
REGWMIN
[ ] value for use in communication via serial communication port
®
MG.33.L4.02 – VLT is a registered Danfoss trademark
32-72 Size of the Control Window (Deactiv.)
REGWMIN
Range
0 – MLONG [qc]
Function
REGWMIN indicates the size of the window inside of
which the control is to be deactivated until the par.
32-71 Size of the Control Window (Activation) is
reached again.
32-8* Velocity & Acceleration
Use the following parameters to specify velocity,
acceleration, and ramp.
32-80 Maximum Velocity (Encoder)
VELMAX
Range [Unit]
1 – 100000 [RPM]
Function
VELMAX defines the rated speed of the drive. This
value is listed in RPM and is needed for the calcula-
tion of ramps and actual velocities.
NB!:
The nominal speed refers to the speed of
the encoder.
32-81 Shortest Ramp
RAMPMIN
Range [unit]
0.001 – 3600.000 [s]
Function
The RAMPMIN parameter determines the Shortest
Ramp (maximum acceleration). It indicates how
long the acceleration phase lasts at the very least
in order to achieve the rated velocity.
If you work with the MCO 305 then you should
always set the ramps via the option card and not in
the FC 300. The FC 300 ramps must always be set
to minimum.
0
1500
1.000
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