Danfoss EKC 312 User Manual Download Page 12

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DKRCC.PS.R1.A3.02 / 520H9752

Manual

Electronic superheat controller, type EKC 312

List of literature

Instructions:

RI8JZ (extract from this manual).

Here you can see how controllers are mounted and programmed.

Installation guide for extended operation RC8AC

Here you can see how a data communication connection to ADAP-KOOL® Refrigeration control systems can be established.

If the distance between EKC 312 and the ETS valve exceeds 5 m a

filter must be mounted to obtain the correct valve function.

The filter must be placed close to EKC 312.

Type

Description

Code no.

AKA 211

Filter 4 × 10 mH

084B2238

DIN-rail mounting

L < 5 m

5 m < L < 50 m

ETS connection

Connection

Ordering

Dimensions

Summary of Contents for EKC 312

Page 1: ...njection ensures optimum utilisation of the evaporator and hence a high suction pressure y y The superheating is regulated to the lowest possible value User manual Electronic superheat controller Type...

Page 2: ...ve regulation of the refrigerant injection ensures optimum utilisation of the evaporator and hence a high suction pressure y y The superheating is regulated to the lowest possible value Functions y y...

Page 3: ...on is stopped when the connection is interrupted The function must be used when the compressor is stopped The controller then closes the solenoid valve so that the evaporator is not charged with refri...

Page 4: ...umption Controller ETS step motor 5 V A 1 3 V A Input signal Press transmitter 4 20 mA from AKS 33 Digital input from external contact func tion Sensor input 2 pcs Pt1000 ohm Alarm relay 1 pcs SPST AC...

Page 5: ...ification factor Kp If the Kp value is reduced the regulation becomes slower n04 Kp factor I Integration time Tn If the Tn value is increased the regulation becomes slower n05 Tn sec Max value for the...

Page 6: ...e if 2 has been selected Temperature reference if 3 has been selected o17 Display mode Manual control of outputs For service purposes the individual relay outputs and the ETS output can be forced Howe...

Page 7: ...Te Read the temperature at the S4 sensor u27 S4 temp Read value of current signal from pressure transmitter AIB u29 AI B mA DO1 Alarm Read status of alarm relay For Danfoss only Start up time for safe...

Page 8: ...ve s actual opening degree give the lower button a brief push 1s Define view in o17 Reference Units 0 C bar 1 F psig r05 0 1 0 Start stop of refrigeration r12 OFF On 1 Regulating parameters P Amplific...

Page 9: ...tcircuited S2 sensor E17 Cut out S4 sensor E18 Shortcircuited S4 sensor E20 The input signal on terminals 14 15 is outside the range P0 signal A11 Alarm message No refrigerant has been selected A43 Ch...

Page 10: ...are no substitute for normal good engineering practice Danfoss wil not be responsible for any goods or plant components damaged as a result of the above defects It is the installer s responsibility t...

Page 11: ...the regulation 2 Follow the menu survey on page 6 and set the various para meters to the required values 3 Switch on the external switch and regulation will start 4 Follow the actual superheat on the...

Page 12: ...uide for extended operation RC8AC Here you can see how a data communication connection to ADAP KOOL Refrigeration control systems can be established If the distance between EKC 312 and the ETS valve e...