Pid Derivative Time; Pid Proportional Gain; Pid Integral Time; Pid Output Upper Limit - Siemens MICROMASTER 440 Parameter Manual

Issue 01/06
P2274

PID derivative time

CStat: CUT
P-Group: TECH
Sets PID derivative time.
P2274 = 0:
The derivative term does not have any effect (it applies a gain of 1).
P2280

PID proportional gain

CStat: CUT
P-Group: TECH
Allows user to set proportional gain for PID controller.
The PID controller is implemented using the standard model.
PID
setpoint
P2267
PID
feedback
P2268
For best results, enable both P and I terms.
Dependency:
P2280 = 0 (P term of PID = 0):
I term acts on the square of the error signal.
P2285 = 0 (I term of PID = 0):
PID controller acts as a P or PD controller respectively.
Note:
- If the system is prone to sudden step changes in the feedback signal, P term should normally be set to
a small value (0.5) with a faster I term for optimum performance.
- The D term (P2274) multiplies the difference between the present and previous feedback signal thus
accelerating the controller reaction to an error that appears suddenly.
- The D term should be used carefully, since it can cause the controller output to fluctuate as every
change in the feedback signal is amplified by the controller derivative action.
P2285

PID integral time

CStat: CUT
P-Group: TECH
Sets integral time constant for PID controller.
Details:
See P2280 (PID proportional gain).
P2291

PID output upper limit

CStat: CUT
P-Group: TECH
Sets upper limit for PID controller output in [%].
Dependency:
If F max (P1082) is greater than P2000 (reference frequency), either P2000 or P2291 (PID output upper
limit) must be changed to achieve F max.
Note:
P2291 = 100 % corresponds to 4000 hex (as defined by P2000 (reference frequency)).
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
Datatype: Float
Active: Immediately
Datatype: Float
Active: Immediately
P2263
0
+
+
1
+
-
+
d
r2262
dt
y
P2274
x
r2272
Datatype: Float
Active: Immediately
Datatype: Float
Active: Immediately
Parameter Description
Min:
Unit: s Def:
QuickComm.: No Max:
Min:
Unit: - Def:
QuickComm.: No Max:
P2293
P2291
P2280 P2285
y
Kp Tn
x
r2273
P2292
P2293
Min:
Unit: s Def:
QuickComm.: No Max:
Min:
Unit: % Def:
QuickComm.: No Max:
Level
0.000
2
0.000
60.000
Level
0.000
2
3.000
65.000
Motor
control
r2294
Level
0.000
2
0.000
60.000
Level
-200.00
2
100.00
200.00
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