Siemens SINUMERIK 840C - Manual (Page 536)

07.97 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Damping reference model speed control loop 1415
Default value Lower input value Upper input value Units
1.0 0.5 5.0 –
Active
at once
Input of damping for the "Speed control loop" reference model. This is a reference model
(PT2) for the speed control loop with a controller of the PIR type. The higher the input value,
the stronger the damping effect.
Note:
Machine data MD 1414, MD 1415 and MD 1416 must be set in each case to the same value
for interpolating axes.
Symmetrization reference model speed 1416
Default value Lower input value Upper input value Units
0.0 0.0 1.0 –
Active
at once
Input of symmetrization for the "Speed control loop" reference model. This machine data
simulates the calculation dead time of the speed control loop. The simulation is in this case
calculated as an approximation of an interrupted dead time. The response of the reference
model can in this way be matched to the controlled system response of the closed, P-
controlled speed control loop.
Message n
x
for n
act
< n
x
1417
Default value Lower input limit Upper input limit Units
6 000.0 0.0 50 000.0 rev/min
Active
at once
Input of threshold speed for monitoring purposes; if the actual speed value does not reach the
set threshold speed in terms of absolute value, a message is transferred to the SERVO.
Message n
min
for n
act
< n
min
1418
Default value Lower input limit Upper input limit Units
5.0 0.0
25 000.0
50 000.0 (as from
SW 6)
rev/min
Active
at once
Input of threshold speed for monitoring purposes; if the actual speed value does not reach the
set threshold speed in terms of absolute value, a message is transferred to the SERVO.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–121
SINUMERIK 840C (IA)