EC –Controller Compacto DOMEL
7 Operating and installation Instructions V2.2, April 2015
Set RPM via potentiometer: Electronics can be controlled by external potentiometer (4k7 to
47kΩ) connected to terminals (8=gnd), (9=input) and (10=+5V). If the direction of rotary
potentiometer is incorrect, change the wires on terminal (8) and (10).
Electrical parameters: Three-wire, Rpot=4k7-47kΩ, Zin=10kΩ
Power supply 5VDC/10mA: Electronics are equipped with 5VDC/10mA for power supply to
an external potentiometer. Power supplying other loads is not allowed. The 5 VDC supply is
galvanically isolated from the supply voltage, but has the same potential as the analogue and
digital inputs and outputs.
Electrical parameters: 5VDC +/- 5% (regulated); 10mA; Terminal number: 10.
Power supply 24VDC/40mA: Electronics are equipped with 24VDC/40mA power supply for
external sensor connected via AN2, or for small external fan for cooling controller. The 24
VDC supply is galvanically isolated from the supply voltage, but has the same potential as the
analogue and digital inputs and outputs.
Electrical parameters: 23VDC +/- 10% (not regulated); 50mA; Terminal number: 13, 16, 19.
AN2: Analogue input 2 –Electronics can be controlled by external analogue input signal AN2
for external sensor (temperature, CO2, smoke sensor, etc.).
Electrical parameters: Vinmax=12V, Zin=10kΩ, Resolution 10-bit
Important: Wrong polarity at input AN2 can cause serious damage on the controller.
PID Control:
Electronics are equipped with internal PID regulator via AN2. The PID Control uses the value
on the AN1 as Set Point value.
For additional PID control parameter setting see chapter 6 (Controller configuration).
Speed output: Electronics are equipped with an Open Collector speed output signal for
speed monitoring.
Speed output mode could be set as:
Frequency output f=1Hz/1RPM @ 25mA, (1Hz means 1RPM, max frequency is
determined by the max RPM)
PWM output –D=0%↔RPM=0, D=100%↔RPM=100%,
PWM output –10V / 1mA,
Current generator output 0-20 mA,
Current generator output 4-20 mA,
Voltage generator output 0-10 V/1 mA
Voltage generator output 2-10 V/1 mA
Voltage generator output 0-10 V/1 mA calculated regarding actual RPM with 5%
tolerance.
SO mode 9 (Chapter 6) is calculated by equation:
For additional parameter setting see chapter 6 (Controller configuration).
