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Manual

REFRIGERATION AND
AIR CONDITIONING

Superheat controller
EKC 315A

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Summary of Contents for EKC 315A

Page 1: ...Manual REFRIGERATION AND AIR CONDITIONING Superheat controller EKC 315A...

Page 2: ...ring 3 Operating principle 3 Operating the EKC 315A 4 5 Quick Setup Guide 6 Survey of functions settings and parameters 7 10 Service parameters for troubleshooting 11 Technical data 11 Wiring diagram...

Page 3: ...ively small refrigerant charge the type ICM valve is recommended In systems with an AKV A valve the capacity can be distributed by using up to three valves in parallel When using more than one AKV A p...

Page 4: ...r an error in regulation In this situation pushing the upper button for 1 second will cause the alarm or error code to be displayed When an alarm code is displayed by pushing the upper button the alar...

Page 5: ...parameter you have scrolled to Press the both buttons simultaneously To increase the setting Press the upper button To decrease the setting Press the lower button To save the new setting and return to...

Page 6: ...actuator s default settings input setting 2 Enter the pressure transmitters working range in parameters o20 min value and o21 max value Note These settings must be entered in gauge pressure and most t...

Page 7: ...for example for loss due to a long sensor cable r09 18 F 10 K 18 F 10 K 0 F 0 K Offset of temperature sensor S3 signal To calibrate the sensor reading or to compensate for example for loss due to a lo...

Page 8: ...half n19 0 2 1 0 0 3 Amplification factor for superheat only in 1 1 systems This setting determines the ICM or AKV valve s opening degree as a function of the change in evaporating pressure An increas...

Page 9: ...fset At maximum AI the offset will be as set in parameter r06 o10 0 4 0 Frequency Must be set to the frequency of the 24 Vac power source o12 0 50 Hz 1 60 Hz 0 50 Hz Selection of normal display conten...

Page 10: ...F 35 C Value of analog output at maximum current terminals 2 5 only applicable to AKV A or TQ Upper end of temperature or opening degree range that will yield a current output of 20 mA o28 94 F 70 C 3...

Page 11: ...ctive complied and EMC demands re CE marking complied with LVD tested according to EN 60730 1 and EN 60730 2 9 EMC tested according to EN50081 1and EN 50082 2 Service Parameters for Troubleshooting vi...

Page 12: ...tional power source needed Terminal pairs Description 17 18 Signal from TQ discontinued valve actuator See Appendix 1 for TQ wiring diagram 18 19 Optional current input from PLC or other source for of...

Page 13: ...er than the integration time Tn parameter n05 time Tp Tn Tn is say 240 seconds 1 Increase Tn to 1 2 times Tp 2 Wait until the system is in balance again 3 If there is still oscillation reduce Kp initi...

Page 14: ...o types of superheat regulation load defined control and adaptive control are shown below For industrial refrigeration applications load defined control should be tried first Load defined superheat Th...

Page 15: ...Manual EKC 315A Industrial Evaporator Controller 15 USCO PD RD0 A1 22 521U0092 Danfoss USCO HMR_MKS 04 2008...

Page 16: ...O PD RD0 A1 22 521U0092 Danfoss USCO HMR_MKS 04 2008 Danfoss Inc Refrigeration Air Conditioning Division 7941 Corporate Drive Baltimore MD 21236 Ph 410 931 8250 Fax 410 931 8256 E mail baltimore danfo...

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