Unigas G270X, Manual Of Installation - Use - Maintenance

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The default value for this parameter is10% that is, the burner will turn off at a temperature 1% higher than the set-point.
Press the ENTER to confirm, the press ESC to exit. Otherwise press ESC to exit without changing data. Press the ESC to exit
6.4.3 PID control parameters
The controller’s memory contains 5 standard parameter sets.
If required, 1 of these 5 PID triple values can be copied to the storage locations for the actual values so that it becomes active.
PID standard values for the following applications:
1st level 2nd level 3rd level 4th level 5th level 6th level Description
Params & Display
Menu level for making the parameter
settings
LoadController Settings for the internal load
controller
ControllerParam Settings for internal load controller
ContrlParamList Settings of controller parameter for
internal load controller
StandardParam Adaption
very fast
fast
normal
slow
very slow
It is possible to manually set the PID parameters to any value in the setting range shown below, to activate a PID regulation from the predefined
standard values described below (and edit it further if required), or to use the adaption function (self-setting function) instead of making the settings
manually. The LMV5... then acquires the PID parameters itself.
See the LMV5x Siemens manual for instructions. Generally the choice of the proper pre-set PID that LMV5x suggest (very fast / fast / normal / slow /
very slow) are enough for a proper operation.
Table shows the pre set parameter of the PID regulator according to the internal modulator reaction choice.
The parameter Xp is the proportional band in % of the set-point
Adaption
The values acquired by the LMV5... adaption
function are
Xp [%] Tn [s] Tv [s]
Very fast
(e.g. for small boiler)
42,5 68 12
Fast 14,5 77 14
Normal 6,4 136 24
Slow 4,7 250 44
Very slow
(e.g. for large boiler)
3,4 273 48