Koer C35-FC, Техническое руководство, Страница: 26 / 47

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C35-FC
Adjustments can be made using the + / - buttons. Once the required adjustments have been
made, select to save your changes.
PID
The Proportional-Integral-Derivative controller (PID controller) calculates a difference between
measured values and set points. The PID controller minimises the difference between those
values by adjusting openness of the valves and fan speed.
NOTE: The default values may not be suitable for all applications. Adjust PID gains
according to each project’s specifi cations.
Fan PID
Tuning a PID controller for fan reaction involves setting Proportional gain ( Fan PID Kp), Integral
gain ( Fan PID Ki) or Derivative gain (Fan PID Kd) parameter values. If 2-term (PI) or 1-term (P)
control is needed adjust unnecessary values to zero.
ECM voltage
The analog output signal (AO1) for the EC motor can be confi gured with three parameters:
• ECM OFF Voltage: If this value is different from zero volts for the controlled EC motor
fan, adjust the
ECM OFF voltage to a value that will turn off the ECM fan.
•
ECM Min Speed Voltage: Defi nes the minimum signal value and the minimum speed
of the fan (20 %).
• ECM Max Speed Voltage: Defi nes the maximum signal value and the maximum speed
of the fan (100 %).
Example for ECM voltage settings:
ECM OFF voltage = 0.8 V
ECM Min speed voltage = 2 V
ECM Max speed voltage = 8 V
Fan speed AO1 [V]
OFF 0.8 V
20% 3.2 V
40% 4.4 V
60% 5.6 V
80% 6.8 V
100% 8.0 V
Table 12.3.3. Analog output (AO1) values depending on selected fan speed and ECM voltage settings
12.3.2. Parameters [2/4]