Siemens LMV51.100B2 - Control Parameters of the Load Controller; Selection of the Standard Parameter Set; Individual Setting of the PID Parameters; Automatic Adaption

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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 8 Commissioning instructions for the LMV5... system 13.08.2004
8.1.6 Control parameters of the load controller
The control parameters can be defined in 3 different ways.
The memory of the load controller contains 5 standard parameter sets.
Depending on the characteristics of the controlled system, a PID triple value can be se-
lected and activated.
The following standard parameter sets can be chosen:
P [%] I [s] D [s]
Very fast 40 55 15
Fast 4 35 17
Normal 7 90 50
Slow 15 320 40
Very slow 30 400 10
Alternatively, the PID parameters can be directly selected and set within the predefined
value range.
Menu level 1 Menu level 2 Menu level 3 Menu level 4 Menu level 5 Menu level 6
Params & Display
LoadController
ControllerParam
ContrlParamList
StandardParam
Adaption
very fast
fast
normal
slow
very slow
Or
P-Part (Xp)
I_Part (Tn)
D-Part (Tv)
With the method of adapting the control parameters, the characteristic data of the con-
trolled system are acquired with an adaption procedure whereupon matching PID pa-
rameters will be calculated.
If possible, the adaption load should be 100 %.
Menu level 1 Menu level 2 Menu level 3 Menu level 4 Menu level 5 Menu level 6
Params & Display
LoadController
Adaption
StartAdaption
AdaptionLoad
1. Selection of the
standard parameter set
2. Individual setting of
the PID parameters
3. Automatic adaption