Siemens SINUMERIK 840C - Manual (Page 534)

04.96 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Notes:
• Setting the reset time to zero deactivates the I-action component for the range which is
greater than the machine data "Adaptation upper speed threshold (MD 1412) (see also
Note in MD 1409).
• MD 1410 is not active when the "Speed controller adaptation" is deactivated
(MD 1413 = 0).
Caution:
When the adaptation function is active, deactivation of the I-action component for only one
speed range (MD 1409 = 0 and MD 1410 0 or vice versa) should be avoided (to prevent
problem of torque step changes through resetting of the integral value on transition from
adaptation to constant range).
Lower adaptation speed 1411
Default value Lower input value Upper input value Units
0.0 0.0 50 000.0 rev/min
Active
at once
Input of lower speed threshold for adaptation of the speed controller machine data or automatic
parameterization (initialization) via operation ”Calculate controller data” for MSD. When the
adaptation function is active, the control machine data MD 1407 and MD 1409 are applied at
speeds n < MD 1411. In the adaptation range MD 1411 < n < MD 1412, linear interpolation
takes place between the two control machine data sets.
Graphic representation:
Adaptation of speed controller machine data by means of characteristic
n
MD 1411
K
P
, T
N
MD 1412 MD 1401
MD 1409
MD 1408
MD 1410
MD 1407
Lower speed
range with
constant P gain/
integral-action
time
Upper speed
range with
constant P gain/
integral-action
time
Adaptation
range
T
N
K
P
Upper adaptation speed 1412
Default value Lower input value Upper input value Units
0.0 0.0 50 000.0 rev/min
Active
at once
Input of upper speed threshold for adaptation of the speed controller machine data or
automatic parameterization (initialization) via operation ”Calculate controller data” for MSD.
When the adaptation function is active, the control machine data MD 1408 and MD 1410 are
applied at speeds n > MD 1412. In the medium range MD 1411 < n < MD 1412, linear
interpolation takes place between the two control machine data sets. See machine data
"Adaptation lower speed threshold" (MD 1411) for diagram.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–119
SINUMERIK 840C (IA)