List of Parameters
Parameters
1-249
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Allows the user to select the transducer type for the PID feedback signal.
Values: 0: Disabled
1: Inversion of PID feedback signal
Notice: It is essential that you select the correct transducer type.
If you are unsure whether 0 or 1 is applicable, you can determine the correct type as follows:
1. Disable the PID function (P2200 = 0).
2. Increase the motor frequency while measuring the feedback signal.
3. If the feedback signal increases with an increase in motor frequency, the PID transducer type should be 0.
4. If the feedback signal decreases with an increase in motor frequency the PID transducer type should be set to 1.
Description: Displays PID scaled feedback signal in [%].
Note: r2272 = 100 % corresponds to 4000 hex.
Description: Displays PID error (difference) signal between setpoint and feedback signals in [%].
Note: r2273 = 100 % corresponds to 4000 hex.
Description: Sets PID derivative time.
P2274 = 0: The derivative term does not have any effect (it applies a gain of 1).
Description: Allows user to set proportional gain for PID controller.
The PID controller is implemented using the standard model.
For best results, enable both P and I terms.
Dependency: P2280 = 0 (P term of PID = 0): The 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.
p2271 PID transducer type / PID trans. type
Access level: 2 P-Group: Technology Data type: Unsigned16
Quick comm. NO Active: YES Data set: -
Can be changed: U, T
Min Max Factory setting
0 1 0
r2272 CO: PID scaled feedback / PID scal fdbck
Access level: 2 P-Group: Technology Data type: Floating Point
Unit: [%] Data set: -
r2273 CO: PID error / PID error
Access level: 2 P-Group: Technology Data type: Floating Point
Unit: [%] Data set: -
p2274 PID derivative time / PID deriv. time
Access level: 2 P-Group: Technology Data type: Floating Point
Quick comm. NO Active: YES Data set: -
Can be changed: U, T
Min Max Factory setting
0.000 [s] 60.000 [s] 0.000 [s]
p2280 PID proportional gain / PID prop. gain
Access level: 2 P-Group: Technology Data type: Floating Point
Quick comm. NO Active: YES Data set: -
Can be changed: U, T
Min Max Factory setting
0.000 65.000 3.000
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