Siemens SINAMICS G120 - Page 275

Further information about the following PID controller topics is available in the Internet:
● Setpoint specification: Analog value or fixed setpoint
● Setpoint channel: Scaling, ramp-function generator and filter
● Actual value channel: Filter, limiting and signal processing
● PID controller Principle of operation of the D component, inhibiting the I component and
the control sense
● Enable, limiting the controller output and fault response
FAQ (http://support.automation.siemens.com/WW/view/en/92556266)
Setting the technology controller
Parameter Remark
p2200 BI: Technology controller enable (factory setting: 0)
1 signal: Technology controller is enabled.
r2294 CO: Technology controller output signal
To interconnect the main speed setpoint with the technology controller output, set
p1070 = 2294.
p2253 CI: Technology controller setpoint 1 (factory setting: 0)
Setpoint for the technology controller.
Example:
p2253 = 2224: The inverter interconnects the fixed setpoint p2201 with the setpoint
of the technology controller.
p2220 = 1: The fixed setpoint p2201 is selected.
p2264 CI: Technology controller actual value (factory setting: 0)
Technology controller actual value.
p2257, p2258 Technology controller ramp-up time and ramp-down time (factory setting: 1 s)
p2274 Technology controller differentiation time constant T
d
(factory setting: 0.0 s)
The differentiation improves the rise time for very slow controlled variables, e.g. a
temperature control.
p2280 Technology controller proportional gain K
P
(factory setting: 1.0)
p2285 Technology controller integration time (integral time) T
d
(factory setting: 30 s)
Advanced settings
Table 6-43 Limiting the output of the technology controller
Parameter Remark
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 CI: Technology controller maximum limiting signal source (factory setting: 1084)
p2298 CI: Technology controller minimum limiting signal source (factory setting: 2292)
Advanced commissioning
6.18 PID technology controller
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE 275