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Summary of Contents for Danfoss EKC 326A
- Page 1 User Guide Controller to regulate CO 2 gas pressure EKC 326A ADAP-KOOL® Refrigeration control systems...
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Page 2: Table Of Contents
T subcooling can be used in the subcritical range. Contents Menu survey .....................10 Introduction ....................... 2 Connections .....................11 Examples ......................4 Data ........................13 Survey of functions ..................6 Ordering ......................13 Operation ......................10 Appendix ......................14 Manual RS8FM602 © Danfoss 02-2016 EKC 326A... - Page 3 Emergency cooling The valve's average opening degree for the last six hours is regularly saved. This opening degree is used if there is a need for emergency cooling. EKC 326A Manual RS8FM602 © Danfoss 02-2016...
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Page 4: Examples
Examples Simple heat recovery system Partial heat recovery system Heat recovery system (or heat pump system) Manual RS8FM602 © Danfoss 02-2016 EKC 326A... - Page 5 • At 2 V the reference changes to the setting “Pc HR Min” • At 10 V the reference will increase further using the setting “Pgc HR offset” • Between 2-10 V the reference is variable. EKC 326A Manual RS8FM602 © Danfoss 02-2016...
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Page 6: Survey Of Functions
COP control to maximum refrigeration control. (The pressure increases, temperature remains unchanged and the total heat content increases.) Set the pressure increase value. The function is activated by closing the switch function on terminals 1 and 2. (see o02) Manual RS8FM602 © Danfoss 02-2016 EKC 326A... - Page 7 Automatically set when "n03" is set to 0, 1, 2, 3, 4 or 6 ETS (CCM) setting Steps / sec Speed of spindle travel (no. of steps per second) Automatically set when "n03" is set to 0, 1, 2, 3, 4 or 6 EKC 326A Manual RS8FM602 © Danfoss 02-2016...
- Page 8 Sgc temp. The pressure in the gas cooler. Measured using pressure transmitter Pgc. Pgc bar The pressure in the receiver. Measured using pressure transmitter Prec, but only if it is Prec bar mounted. Manual RS8FM602 © Danfoss 02-2016 EKC 326A...
- Page 9 A84: The receiver pressure measured is lower than "n71" minus "n72" PrecMin alarm A94: Pgc gas pressure measured is outside the permitted reference PgcRef alarm A95: Prec receiver pressure measured outside the permitted reference PrecRef alarm EKC 326A Manual RS8FM602 © Danfoss 02-2016...
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Page 10: Menu Survey
**) The display on the controller can show 3 digits only, but the setting value has 4 digits. Only the 3 most important will be shown. It means fx. 250 will give a setting of 2500. Manual RS8FM602 © Danfoss 02-2016 EKC 326A... -
Page 11: Connections
Data communication Mount only, if a data communication module has been mounted. It is important that the installation of the data communi- cation cable be done correctly. Cf. separate literature No. RC8AC... EKC 326A Manual RS8FM602 © Danfoss 02-2016... - Page 12 ETS (CCM) connection If the distance between EKC 326A and the ETS (CCM/CCMT) valve exceeds 5 m a filter must be mounted to obtain the correct valve function. The filter must be placed close to EKC 326A. Connection L < 5 m 5 m <...
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Page 13: Data
Pressure transmitter type AKS 2050 ... Kindly refer to tech.broch RD5GJ Terminals max. 2.5 mm multicore EMC acc. EN 61000-6-3 and EN 61000-4-(2-6, 8, 11) Approvals LVD acc. EN 60730-1 and EN 60730-2-9 EKC 326A Manual RS8FM602 © Danfoss 02-2016... -
Page 14: Appendix
An example may be a 40-bar plant in which the receiver's refer- ence pressure is set to 35 bars. Here the system can interfere with normal regulation because the high pressure limit is very stringent. Manual RS8FM602 © Danfoss 02-2016 EKC 326A... - Page 15 Functions for regulation reference EKC 326A Manual RS8FM602 © Danfoss 02-2016...
- Page 16 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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