Siemens SINAMICS G120 Operating Instructions Manual page 227

Table 9- 47
Parameter
p2200 = 1
p1070 = 2294
p2253 = ...
p2264 = ...
p2257, p2258
p2274
p2280
p2285
Advanced settings
Table 9- 48
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 = 2291
p2298 = 2292
p2291
p2292
Manipulating the actual value of the technology controller
p2267, p2268
p2269
p2271
p2270
You can find additional information in function block diagram 7958 of the List Manual.
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
Setting the technology controller
Remark
Enable technology controller.
Interconnect the main speed setpoint with the output of the technology controller.
Define the 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.
Define the actual value for the technology controller.
Example: For p2264 = 755[0], analog input 0 is the source for the actual value.
Define the ramp-up and ramp-down times [s]
Differentiation time constant [s]
The differentiation improves the rise time characteristics for very slow controlled
variables, e.g. a temperature control.
p2274 = 0: The differentiation is switched off.
Proportional gain K
P
Integral time T [s]
N
Without an integral time, the controller cannot completely equalize deviations
between the setpoint and actual value.
p2285 = 0: The integral time is switched off.
Settings
Remark
Interconnect the upper limit with p2291.
Interconnect the lower limit with p2292.
Upper limit for the technology controller output e.g.: p2291 =100
Lower limit for the technology controller output e.g.: p2292 = 0
Limit the actual value
Scale the actual value
Invert the actual value
Actual value
9.9 Application-specific functions
Functions
225