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Summary of Contents for Danfoss EKC 202B
- Page 1 Controller for temperature control - EKC 202A,B,C and EKC 302A,B Manual...
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Page 2: Table Of Contents
The controller has been prepared with plug, so the module simply has to be pushed in. Contents Introduction ....................... 2 Override ......................15 Connections .....................16 Operation ......................5 Menu survey ....................... 6 Ordering ......................18 Functions ......................8 Technical data ....................19 Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302... - Page 3 If an alarm function is required, relay number two may be used for Defrost is performed here with circulation of the air as the fans are operating continuously. EKC 202B / EKC 302B Controller with three relay outputs, two temperature sensors and digital input.
- Page 4 S5 temperature further down). When the temperature passes a set allowed variation the defrost will be started. This function can only be used in 1:1 systems Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302...
- Page 5 A special moulding technique unites the hard front plastic, the softer buttons and the seal, so that they become an integral part of the front panel. There are no openings that can receive moisture or dirt. EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
- Page 6 1=ON during day operation. 2=ON / OFF via data communication. 3=ON follows the DI- function, when DI is selected to door function or to door alarm Activation of light relay (only if o38=2) Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302...
- Page 7 1 Go through the survey of factory settings. Make any necessary changes in the respective parameters. 2 For network. Set the address in o03 and then transmit it to the gateway/ system unit with setting o04. EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
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Page 8: Functions
The thermostat reference and the alarm values are shifted the following number of degrees when the displacement is activated. Activation can take place via r39 or input DI Night setbck (start of night signal) Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302... - Page 9 0: The load is connected directly to the controller's relays (zero-crossing activated) Relay contact and controller supply must use same phase. 1: The controller's relay must draw a external contactor (zero-crossing cancelled) EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
- Page 10 1: Running (stopped during "fan delay") 2: Running during pump down and defrost. After that stopped Defrost sensor DefStopSens. Here you define the defrost sensor. 0: None, defrost is based on time 1: S5 2: Sair Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302...
- Page 11 Defrost start, minute setting (1 and 11 belong together, etc.) t11-t16 When all t01 to t16 equal 0 the clock will not start defrosts. Clock: Hour setting Clock: Minute setting Clock: Date setting Clock: Month setting Clock: Year setting EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
- Page 12 0 and 100. If not, you can cancel the function with setting 0. If the function is used, access code 1 (o05) must also be used. Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302...
- Page 13 Sair temp * Status on relay 4 (alarm, defrost or light function) DO4 status *) Not all items will be shown. Only the function belonging to the selected application can be seen. EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
- Page 14 Semihermetic Compressors c02 min. 8 minutes and c01 min. 2 to 5 minutes ( Motor from 5 to 15 KW ) * ) Direct activating of solenoid valves does not require settings different from factory (0) Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302...
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Page 15: Override
Time schedule Coordinated defrost Defrost control - - - HoldAfterDef u60 Def.relay Night setback Day/night control - - - Night setbck Time schedule Light control Day/night control o39 Light Remote Time schedule EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012... -
Page 16: Connections
- Use separate cable trays - Keep a distance between cables of at least 10 cm - Long cables at the DI input should be avoided Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302... - Page 17 An address has to be set in o03 (0 can not be used). The display will self find the controller address. EKC 302 External display plus data communication EKC 302 EKA 175 (LON RS485) EKA 178B (MODBUS) EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012...
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Page 18: Ordering
External operation option Temperature sensors: please refer to lit.no. RK0YG Type Funcion Code no. EKA 183A Programming key 084B8582 Copy tool for setting of EKC. For further details refer to Technical Brochure RD8BJ Manual RS8DZ702 © Danfoss 03-2012 EKC 202 / 302... -
Page 19: Technical Data
1) With external relay (c70=ON) (zero-crossing control disabled) 2) Without external relay (c70=OFF) (zero-crossing control enabled) Relay contact and controller supply must use same phase and the load (compressor) must phase compensated to Cos ϕ = 1. EKC 202 / 302 Manual RS8DZ702 © Danfoss 03-2012... - Page 20 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.