Advanced commissioning
6.7 Application-specific functions
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
309
The settings required as a minimum are marked in gray in the function diagram: Interconnect
setpoint and actual values with signals of your choice, set the ramp-function generator and
controller parameters K
P
, T
I
and T
d
.
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
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
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.
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
Technology controller proportional gain K
P
(factory setting: 1,0)
Technology controller integration time (integral time) T
d
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