KGL Operating Manual – UA 412 S
2019-01-14
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1.
2.
3.
Case: Return air
< return air
- 2 K
Actual value
Setpoint
The supply air is regulated to the parameter "Rückluft-Sollwert".
Case: Return air
< return air
- 2 K
Actual value
Setpoint
The setpoint is stepped linearly (see graphic) between the parameters Zuluft-Sollwert and Rückluft-
Sollwert.
Case: Return air
< return air
- 2 K
Actual value
Setpoint
The supply air is regulated to the parameter "Zuluft-Sollwert".
Minimum speed
The minimum speed is not undercut during the control phase, see parameter "Mindest-Drehzahl" (menu 6-2-
7).
Ramp speed
The ramp speed (parameter "VerdRamp" in the menu 6-2-7) of the speed is limited using a parameter. It has a
damping effect on changes in the compressor speed.
5.5.2.1 Controller type SPIR410
The controller type SPIR410 controls the cooling requirement using the compressor enable for a compressor
FC and a calculated compressor speed. The compressor enable is set in the case of existing cooling
requirement and inactive compressor lock. The calculated speed of the compressor FC is calculated using a
PID controller from the current supply air temperature and the supply air setpoint temperature. If there is no
longer any cooling requirement, the calculated speed is reduced using the configured ramp. If the configured
setpoint of the minimum speed is undercut, the compressor enable is reset.
Relevant parameters (menu 6-2-7)
Compressor minimum speed
Compressor ramp
P, I and D values for the compressor speed
