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A analog input signal (voltage/ current) can displace the setpoint and then remote change of setpoint is thus possible. EKC 347 does support 2 types of Danfoss expansion valves. (see below) One analog input is available as feed back from ICM in order to indicate Opening degreee of the ICM.
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With settings 1 and 2 the AO [mA] signal is dedicated for the motor valve ICM. With settings 3, 4, AO [mA] will be send out a signal for process indications. With settings 6, 7, 8, 9, 10 or 11, AO [mA] on EKC 347 SLAVE, will be send out a signal for process indications.
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0/50 1/60 Set supply voltage frequency If E21 is detected. EKC 347 will force the valve to close or open the valve depending Selection of parameter for display and AO (except from af n35 when o09=1,2 or 5) If o34 = 0: If Low pressure has been selected.
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Connections examples EKC 347 – ON/OFF Application. Open/Close solenoid valve with coil 110 V 0-10V Voltage : 110 V a.c Auxiliary relay, Solenoid with coil : with coil : 24 V a.c 110 V a.c Low pressure system ON/OFF application Beside of modulating PI control EKC 347 does also support ON/ OFF operation with hysteresis.
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Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.
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