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6. Special Functions
Menu “7. Special functions” is used to set basic items and expanded functions.
The menu is closed by pressing “esc” or selecting “Exit special functions”.
CAUTION
Other than the time all settings may only be made by a specialist.
CAUTION
The enumeration of the menus may vary from system to system.
6.1 PROGRAM SELECTION
The suitable hydraulic variant for the specifi c application is selected and set here (see „D.3. - Hydraulic variants / Schemes / Systems“ on page 11).
The associated diagram is displayed
Settings range: 1-48 / Default setting: 1
CAUTION
Normally the program selection is made only once during initial commissioning by the specialist. Incorrect program selection can
lead to unpredictable errors.
6.2 SPEED CONTROL
With speed control the Pro-XL6D makes it possible to vary the speed of connected pumps.
CAUTION
This function should only be activated by a specialist. Depending on the pump and pump stage used, the minimum speed should
not be set too low, because otherwise the pump or the system may be damaged. The information provided by the relevant manu
-
facturer must also be observed! If in doubt, the min. speed and the pump stage should generally be set to high rather than too
low.
6.2.1 Variant
The following speed variants are available here:
Off: There is no speed control. The connected pump is only switched on or off with full speed.
Variant V1: After the purging time the controller switches to the set max. speed. If the temperature difference ΔT between the reference sensors
(collector and storage tank) is less than the set value, then the speed is decreased by one stage after the control time elapses. If the temperature
difference between the reference sensors is greater than the set value, then the speed is increased by one stage after the control time elapses. If the
controller has adjusted the speed of the pump down to the smallest stage and the ΔT between the reference sensors is ΔT off, the pump is switched
off.
Variant V2: After the purging time the controller switches to the set min. speed. If the temperature difference ΔT between the reference sensors
(collector and storage tank) is greater than the set value, then the speed is increased by one stage after the control time elapses. If the temperature
difference ΔT between the reference sensors is below the set value, then the speed is decreased by one stage after the control time elapses. If the
controller has adjusted the speed of the pump down to the smallest stage and the ΔT between the reference sensors is TΔoff, the pump is switched
off.