Vmax (Maximum Speed In Nc Mode); Loop Gain Setting) - WEST 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
with the external speed demand. The command is only active if the VMODE has been parameterized to NC.
If the speed differs between the two directions of movement the lower value should be entered.
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 using the loop gain. This following error cor-
responds to the deceleration distance with stroke-dependent deceleration. The conversion and therefore
also the calculation of the correct parameter value can be easily performed using this relationship.
With V0:RES the resolution can be changed in order to put in significant smaller values.
4
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 30 of 70
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
Unit
mm/s
Unit
s
-1
Calculation of the internal control gain
POS-124-U
Group
POS_CTRL
Group
POS_CTRL
4
.
24.01.2022