Siemens SINAMICS G120 Operating Instructions Manual page 268
Low voltage converters, chassis and wall/panel mounted devices with cu230p-2 control units
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Advanced commissioning
6.7 Application-specific functions
Advanced settings
Parameter
Limiting the output of the technology controller
In the factory setting, the output of the technology controller is limited to ± maximum speed. You must
change this limit, depending on your particular application.
Example: The output of the technology controller supplies the speed setpoint for a pump. The pump
should only run in the positive direction.
p2297
p2298
p2291
p2292
Manipulating the actual value of the technology controller
p2267
p2268
p2269
p2271
p2270
For further information refer to the function block diagrams 7950 ff of the List Manual.
Autotuning of the PID controller
Requirements
The PID technology controller must be set the same as when used in subsequent operation:
● The actual value is interconnected.
● Scalings, filter and ramp-function generator have been set.
● The PID technology controller has been enabled (p2200 = 1 signal)
Procedure
Proceed as follows to auto tune the PID controller:
1. Set p2350 to a value of your choice.
2. Set offset p2355. The slower the controlled variable responds, the higher p2350 must be.
3. Switch on the motor.
The inverter signals Alarm A07444.
268
Remark
CI: Technology controller maximum limiting signal source (factory setting: 1084)
CI: Technology controller minimum limiting signal source (factory setting: 2292)
CO: Technology maximum limiting (factory setting: 100 %)
CO: Technology minimum limiting (factory setting: 0 %)
Technology controller upper limit actual value (factory setting: 100 %)
Technology controller lower limit actual value (factory setting: -100 %)
Technology controller gain actual value (factory setting: 100 %)
Technology controller actual value inversion (sensor type)
0:
No inversion
1:
Inversion actual value signal
If the actual value decreases with increasing motor speed, then p2271 must
be set = 1.
Technology controller actual value function
0:
No function
1:
√
2:
x
2
3:
x
3
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB
Converter with CU230P-2 Control Units
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