Siemens CU240B-2 Parameter Manual page 309

p2268 Technology controller lower limit actual value / Tec_ctrl l_lim act
Access level: 3
Can be changed: U, T
Units group: 9_1
Min
-200.00 [%]
Description: Sets the lower limit for the actual value signal of the technology controller.
Dependency: Refer to: p2264, p2265, p2271
Refer to: F07426
Notice: If the actual value falls below this lower limit, this results in fault F07426.
p2269 Technology controller gain actual value / Tech_ctrl gain act
Access level: 3
Can be changed: U, T
Units group: -
Min
0.00 [%]
Description: Scaling factor for the actual value of the technology controller.
Dependency: Refer to: p2264, p2265, p2267, p2268, p2271
Note: For 100%, the actual value is not changed.
p2270 Technology controller actual value function / Tec_ctr ActVal fct
Access level: 3
Can be changed: U, T
Units group: -
Min
0
Description: Setting to use an arithmetic function for the actual value signal of the technology controller.
Value: 0:
1:
2:
3:
Dependency: Refer to: p2264, p2265, p2267, p2268, p2269, p2271
p2271 Technology controller actual value inversion (sensor type) / Tech_ctrl act inv
Access level: 3
Can be changed: T
Units group: -
Min
0
Description: Setting to invert the actual value signal of the technology controller.
The inversion depends on the sensor type for the actual value signal.
Value: 0:
1:
Caution: If the actual value inversion is incorrectly selected, then the closed-loop control with the technology controller can
become unstable and can oscillate!
Note: The correct setting can be determined as follows:
- inhibit the technology controller (p2200 = 0).
- increase the motor speed and in so doing, measure the actual value signal of the technology controller.
--> If the actual value increases as the motor speed increases, then p2271 should be set to 0 (no inversion).
--> If the actual value decreases as the motor speed increases, then p2271 should be set to 1 (the actual value sig-
nal is inverted).
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU240B/E-2 Parameter Manual (LH11), 01/2011
No function
Root function (root from x)
Square function (x * x)
Cube function (x * x * x)
No inversion
Inversion actual value signal
Calculated: -
Scaling: PERCENT
Unit selection: p0595
Max
200.00 [%]
Calculated: -
Scaling: -
Unit selection: -
Max
500.00 [%]
Calculated: -
Scaling: -
Unit selection: -
Max
3
Calculated: -
Scaling: -
Unit selection: -
Max
1
Parameters
List of Parameters
Data type: FloatingPoint32
Data set: -
Factory setting
-100.00 [%]
Data type: FloatingPoint32
Data set: -
Factory setting
100.00 [%]
Data type: Integer16
Data set: -
Factory setting
0
Data type: Integer16
Data set: -
Factory setting
0
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