Siemens SINUMERIK 840C Installation Instructions Manual page 536

07.97
1415
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.
1416
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.
1417
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.
1418
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.
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SINUMERIK 840C (IA)
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Damping reference model speed control loop
Default value Lower input value
1.0
Symmetrization reference model speed
Default value Lower input value
0.0
Default value Lower input limit
6 000.0
Message n
Default value Lower input limit
5.0
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7 Drive Machine Data (SIMODRIVE Drive MD)
Upper input value
0.5 5.0
Upper input value
0.0 1.0
Message n for n < n
x act x
Upper input limit
0.0 50 000.0
for n < n
min act min
Upper input limit
25 000.0
0.0 50 000.0 (as from
SW 6)
6FC5197- AA50
7.3.2 Drive MD (data description)
Active
at once
Units
–
Active
at once
Units
–
Active
at once
Units
rev/min
Active
at once
Units
rev/min
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