BLAUBERG Ventilatoren Iso-ZS, User Manual

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Iso-ZS
10
Example of the temperature-based feedback delay for the temperature and
speed control module:
Initial Conditions:
Rated rotation speed is 60 % of the maximum speed.
Set temperature point is +25 °C.
Air duct temperature is +20 °C.
1. Fan impeller rotation speed is 60 %.
2. Air duct temperature increases, the fan impeller rotation speed is 60 %.
3. Air duct temperature r25 °C, the fan switches to impeller rotation speed 100 %.
4. Air duct temperature starts falling. The fan impeller rotation speed is 100 %.
5. Air duct temperature r23 °C. The fan switches to the pre-set lower speed 60 %.
Example of the timer-based feedback delay for the temperature and
speed control module:
Initial Conditions:
Rated rotation speed is 60 % of the maximum speed.
Set temperature point is +25 °C.
Air duct temperature is +20 °C.
1. Fan impeller rotation speed is 60 %.
2. Air duct temperature increases, r25 °C and continues to grow.
3. The fan switches to impeller rotation speed 100 %. The delay timer is activated for 5 minutes.
4. Air duct temperature starts falling down. The fan operates with impeller rotation speed is 100 %.
5. The air duct temperature r25 °C and continues to drop.
6. After the timer countdown is over, the fan switches to the pre-set lower speed (=60 %).
After the speed switches to 60 % the timer starts 5 minutes countdown again.
7. Air duct temperature increases, r25 °C and continues to grow.
8. After the timer stops, the fan switches to the high speed 100 %.
After the speed switch the timer starts 5 minutes countdown.
Thus, in the timer delay pattern the delay timer activates each time the fan speed changes.