Vmax (Maximum Speed In Nc Mode); Loop Gain Setting) - W.E.ST. POS-124-U-PFN Technical Documentation Manual

VMAX (Maximum speed in NC Mode)

Command
VMAX_1
VMAX_2
Specification of the maximum speed in NC Mode. This value is defined by the drive system and should be
specified as precisely as possible (not too high under any circumstances). The maximum speed is scaled by
means of the VELO value or via the external speed demand. The command is only active if the VMODE has
been parameterized to NC.
V

(Loop gain setting)

0
Command
V0_1:I
V0_2:I
This parameter is specified in s
In NC Mode the loop gain is normally specified rather than the deceleration distance
The internal gain is calculated from this gain value together with the VMAX and SYS_RANGE parameters.
G
Intern
In NC Mode the following error at maximum speed is calculated by means of the loop gain. This following
error corresponds to the deceleration distance with stroke-dependent deceleration. The conversion and
therefore also the correct data demands related to the control system are relatively simple if the relationship
described here is taken into account.
With V0:RES the resolution can be changed in order to put in significant smaller values.
5
The loop gain is alternatively defined as a KV factor with the unit (m/min)/mm or as Vo in 1/s. The conversion is KV =
Vo/16.67.
Page 28 of 62
Parameters
x x= 1... 5000
x
Parameters
x i= A|B|RES
x x= 1... 200
RES: x= 1|100
-1
(1/s).
v

max
D
i
V
0
SYS _ RANGE

D
i
POS-124-U-PFN-2030
Unit
mm/s
Unit
s
-1
Calculation of the internal control gain
Group
POSITION
NC
Group
POSITION
NC
5
.
23.08.2016