Siemens SINAMICS G120 - Page 304

Setting functions
8.7 Application-specific functions
Inverter with CU230P-2 Control Units
304 Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
Example
In an open plan office, temperature sensors (Lg-Ni1000) are installed in three different
places. The inverter receives the measured values and temperature setpoint via its analog
inputs. Temperature setpoints between 8 °C … 30 °C are permissible. Overnight the average
temperature should be 16 °C.
Settings
p2200.0 = 1
Technology controller enable
p2251 = 0
Set technology controller as main setpoint
p2900.0 = 16
Temperature setpoint overnight as a fixed percentage value
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
percentage value
p0756.2 = 6
Select analog input type (temperature sensor LG-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
percentage value
p0756.3 = 6
Select analog input type (temperature sensor LG-Ni1000)
p0757.3 = 0 / p0758.3 = 0
Set lower value of the scaling characteristic
p0759.3 = 100 / p0760.3 =
100
Set upper value of the scaling characteristic
p31026.2
= 755.1
Temperature actual value 3 via tempera
ture sensor with
current output (0 mA … 20 mA) via analog input 1
p0756.1 = 2
Select analog input type (current input 0 … 20 mA)
p0757.1 = 0 / p0758.1 = 0
Set lower value of the scaling characteristic (0 mA ≙ 0 °C)
p0759.1 = 20 / p0760.1 = 100
Set upper value of the scaling characteristic (20 mA ≙ 100%)
p31025 = 722.4
Changeover from day to night via digital input 4
You will find more information about this multi-zone control in the parameter list and in
function diagram 7032 of the List Manual.