Siemens CU240B-2 Operating Instructions

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.
Parameter Description
p2200[0] = 1 Technology controller enable
p2251 = 0 Technology closed-loop controller as main setpoint
p2900[0] = 16 Temperature setpoint overnight as a fixed percentage value
p31020 = 1 Activate multi-zone control
p31021 = 0 Multi-zone control with one setpoint and three actual values
p31022 = 7 Three actual values, one setpoint. The actual value of the closed-loop control is
the average value of three actual values.
p31023[0] = 755[0] Temperature setpoint via analog input AI 0
p0756[0] = 0 Select analog input type (voltage input 0 … 10 V)
p0757[0] = 0 Lower value = 8° C (0 V ≙ 8° C)
p0758[0] = 8
p0759[0] = 10 Upper value = 30° C (10 V ≙ 30° C)
p0760[0] = 30
p31023[1] = 2900 Interconnect p31023[1] with the value from p2900 for the reduction overnight
p31026[0]= 755.2 Temperature actual value 1 via analog input 2 as a percentage value
p0756[2] = 6 Analog input type (temperature sensor LG-Ni1000)
p0757[2] = 0 Lower value of the scaling characteristic
p0758[2] = 0
p31023[1] = 2900 Interconnect p31023[1] with the value from p2900 for the reduction overnight
p31026[0]= 755.2 Temperature actual value 1 via analog input 2 as a percentage value
p0756[2] = 6 Analog input type (temperature sensor LG-Ni1000)
p0757[2] = 0 Lower value of the scaling characteristic
p0758[2] = 0
p0759[2] = 100 Upper value of the scaling characteristic
p0760[2] = 100
p31026[1] = 755[3] Temperature actual value 2 via analog input AI 3 in %
p0756[3] = 6 Select analog input type (temperature sensor LG-Ni1000)
p0757[3] = 0 Lower value of the scaling characteristic
p0758[3] = 0
p0759[3] = 100 Upper value of the scaling characteristic
p0760[3] = 100
p31026[2] = 755[1] Temperature actual value 3 via a temperature sensor with current output
(0 mA … 20 mA) via analog input AI 1
p0756[1] = 2 Analog input type (current input 0 … 20 mA)
p0757[1] = 0 Lower value of the scaling characteristic (0 mA ≙ 0° C)
p0758[1] = 0
Advanced commissioning
6.20 Multi-zone control
Converter with the CU230P-2 Control Units
286 Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English