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Daikin EPKD - Minor Loop Control Method Euro-Card

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Market leaders in environmentally responsible heat pumps, ventilation and air conditioning systems for domestic, commercial and industrial applications.

  • The Daikin EPKD Minor Loop Control Method Euro Card controls the LEM valve which detects the spool position by a differential transformer to carry out a feed back control (minor feed back).
  • Owing to the constant-current characteristics, the variations of the supply voltage and output current by a solenoid can cause a temperature rise but this rarely happens.
  • The output radio wave corrugation (dither frequency, amplitude) is et up so that the hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from the drive is reduced to a small amount.
  • As the function (response time adjusting function) varies the output current slowly for the the  variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).

Description EPKD-02-10 EPKF-02-10
 Supply Voltage DC24V (2A or more) DC24V (2A or more)
 Permissible Voltage Variation -10 ~ 10% -10 ~ 10%
Applied Load Proportional Solenoid (DC12V) Proportional Solenoid (DC12V)
Command Input DC 0 ~ ± 5V or DC 0 ± 10V DC 0 ~ ± 5V or DC 0 ± 10V
Output Current 0 ~ 1600 mA 0 ~ 1600 mA
Power Consumption Max 50 Va Max 50 Va
Input Impedance Approx 30 KΩ Approx 30 KΩ
Response Time 0.05 ~ 3 Seconds 0.05 ~ 3 Seconds
Surrounding Temperature 0 ~ 50°C 0 ~ 50°C
Surrounding Humidity 20 ~ 90% RH 20 ~ 90% RH
 Weight 0.5 Kg 0.3 Kg

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Vat Reg Number: 846644204 Company Registration Number: 5230249

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