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EKC

313

User

Guide RS8FZ402 © Danfoss 2015-07

Example

Optimised superheat regulation with limit if the condensing pressure is low.

Optimised superheat regulation is used when the condensing

pressure is above the set value.

If the condensing pressure falls below the set value, the opti-

mised superheat regulation ceases and the ETS valve closes

gradually until the pressure rises above the value.

Содержание EKC 313

Страница 1: ...Controller for cascade systems with CO2 EKC 313 User Guide ADAP KOOL Refrigeration control systems...

Страница 2: ...e temperature exceeds 100 C Functions Output signal The controller has a voltage output on 0 10 V The signal can be used for Indicating the valve s opening degree when using an ETS valve Controlling t...

Страница 3: ...if the condensing pressure is low Optimised superheat regulation is used when the condensing pressure is above the set value If the condensing pressure falls below the set value the opti mised superhe...

Страница 4: ...result in a reduced opening degree When there is a drop out on the low pressure thermostat during start up the value must be raised a bit If there is pendling during start up the value must be reduced...

Страница 5: ...r second Must only be set when n03 is set to 5 Automatically set when n03 is set to 0 1 2 3 or 4 n38 Steps sec Miscellaneous Miscellaneous Address If the controller is built into a network with data c...

Страница 6: ...eating U19 SH Close Reading the condensation pressure calculated for temperature U20 Cond Temp Tc Reading the condensation pressure pressure at Pc U21 Cond Press Pc Reading the evaporating pressure pr...

Страница 7: ...ings Alarm destinations E1 Fault in controller Controller fault E15 Cut out S2 sensor S2 o c E16 Short circuited S2 sensor S2 s c E17 Cut out S3 sensor S3 o c E18 Short circuited S3 sensor S3 s c E20...

Страница 8: ...y n03 0 7 0 I Integration time Tn n05 5 s 600 s 90 D Differentiation time Td n06 0 s 60 s 0 Max value of superheat reference n09 3 K 60 K 40 Min value of superheat reference n10 3 K 40 K 10 MOP max Of...

Страница 9: ...verted to temperature u26 C Read calculated SH closing value U19 K Read Pc converted to temperature U20 C Read pressure at pressure transmitter Pc U21 bar Working range for pressure transmitter P0 max...

Страница 10: ...nnects when regulation requires a low valve open ing degree Alarm relay 12 and 13 are connected in case of alarm 21 22 23 24 Connecting an ETS valve Terminals 21 through 24 should not be used when usi...

Страница 11: ...3 A inductive Actuator ETS CCM CCMT Step motor ICAD mounted on ICMTS Voltage signal 0 10 V Output signal Voltage signal 0 10 V to either ICAD control or to signal for valves opening degree Data commun...

Страница 12: ...tions can give rise to malfunctions of the control system and ultimately lead to a plant breakdown Every possible safeguard is incorporated into our products to prevent this However a wrong installati...