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Functions
7.9 Application-specific functions
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
259
Note
Please note that when multi-zone control is activated, any BiCo interconnections present for
analog inputs and for the technology controller's setpoint and actual value are cancelled and
interconnected with the links defined in the factory.
When you deactivate multi-zone control, the associated BiCo interconnections are cancelled.
Example
The temperature in a large office is measured at three points and transferred to the inverter
using analog inputs. NI1000 temperature sensors are used as actual value sensors. The
setpoint temperature is specified via the analog input 0 and can be set in the range from 8 °C
… 30 °C by a controller. Overnight the average temperature should be 16 °C.
Parameter settings
p2200.0 = 1
Technology controller enable
p2251 = 0
Set technology controller as main setpoint
p2900.0 = 16
Temperature setpoint overnight as a fixed value in %.
p31020 = 1
Activate multi-zone control
p31021 = 0
Select multi-zone control with one setpoint and three actual
values
p31022 = 7
Three actual values, one setpoint. The average value of the
three actual values is used for the control.
p31023.0 = 755.0
Temperature setpoint via analog input 0
p0756.0 = 0
Select analog input type (voltage input 0 … 10 V)
p0757.0 = 0 / p0758.0 = 8
Set the lower value to 8 °C (0 V ≙ 8 °C)
p0759.0 = 10 / p0760.0 = 30 Set the upper value to 30 °C (10 V ≙ 30 °C)
p31023.1 = 2900.0
Supply p31023.1 with the value written in P2900 to reduce
the temperature overnight
p31026.0 = 755.2
Temperature actual value 1 via analog input 2 as a %
p0756.2 = 6
Select analog input type (temperature sensor Ni1000)
p0757.2 = 0 / p0758.2 = 0
Set lower value of the scaling characteristic
p0759.2 = 100 / p0760.2 =
100
Set upper value of the scaling characteristic
p31026.1 = 755.3
Temperature actual value 2 via analog input 3 as a %
p0756.3 = 6
Select analog input type (temperature sensor Ni1000)
Содержание SINAMICS G120 CU230P-2
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