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Functions
7.9 Application-specific functions
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
222
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
7.9.1.3
Changing over process variables for the technology controller
Note
We recommend that the units and reference values of the technology controller are
coordinated and harmonized with one another during commissioning.
Subsequent modification in the reference variable or the unit can result in incorrect
calculations or displays.
Changing over process variables of the technology controller
You change over the process variables of the technology controller using p0595. For
physical values, you define the reference variable in p0596.
The parameters affected by changing over units of the technology controller belong to unit
group 9_1. For details, please refer to the section titled "Unit group and unit choice" in the
List Manual.
Switching the process variables of the additional technology controller 0
The process variables of the additional technology controller 0 switch over via p11026. You
define the reference variable for absolute units in p11027.
The parameters affected by the unit switchover of the additional technology controller 0
belong to units group 9_2. Details can be found in the Parameter Manual, under the section
entitled "units group and unit selection".
Switching the process variables of the additional technology controller 1
The process variables of the additional technology controller 1 switch over via p11126. You
define the reference variable for absolute units in p11127.
The parameters affected by the unit switchover of the additional technology controller 1
belong to units group 9_3. Details can be found in the Parameter Manual, under the section
entitled "units group and unit selection".
Switching the process variables of the additional technology controller 2
The process variables of the additional technology controller 2 switch over via p11226. You
define the reference variable for absolute units in p11227.
The parameters affected by the unit switchover of the additional technology controller 2
belong to units group 9_4. Details can be found in the Parameter Manual, under the section
entitled "units group and unit selection".
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