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Danfoss ERC 21 Series User Manual Download Page 13

3L, 4N

Sair

S5

Sc

DI1

DI2

Power supply 115 V AC or 230 V AC (refer to the controller label).

Control Sensor

Defrost (evaporator) sensor

Condenser sensor

Digital input - configurable to the functions listed under menu code o02.

Digital input - configurable to the functions listed under menu code o37.

Electric noise

Cables for sensors and DI inputs must be kept separate from other electric cables:

• Use separate cable trays

• Keep a distance between cables of at least 10 cm

• Long cables at the DI input should be avoided.

© Danfoss | Climate Solutions | 2023.01

BC194286421698en-000901 | 13

Electronic refrigeration control, type ERC 21X

Summary of Contents for ERC 21 Series

Page 1: ...User Guide Electronic refrigeration control Type ERC 21X series Smart multipurpose refrigeration controller...

Page 2: ...efrost on Demand 10 Applications 11 Pre defined applications 11 ERC 211 controller 11 ERC 213 controller 11 ERC 214 controller 12 Electrical connection diagram 12 Electric noise 13 Configuration 14 Me...

Page 3: ...t 25 Fan control 26 Compressor 26 Others 26 Polarity 27 Parameters ERC 214 27 Configuration 27 Reference 27 Alarm 28 Defrost 28 Fan control 28 Compressor 29 Others 29 Polarity 29 Alarm code 30 Product...

Page 4: ...ors 34 Certificates declarations and approvals 35 Certificates declarations and approvals 35 Online support 36 Electronic refrigeration control type ERC 21X Danfoss Climate Solutions 2023 01 BC1942864...

Page 5: ...y 16 A relay enable direct connection of heavy loads without use of intermediate relay up to 2 hp compressors depending on its power factor and motor efficiency power factor greater than 0 65 for 230...

Page 6: ...Outputs Relay 1 compressor solenoid valve control or heater in case of heating applications Relay 2 can be configured defrost control or external alarm or cabinet light Relay 3 fan control Inputs Inp...

Page 7: ...either cabinet light or external alarm Inputs Input 1 control sensor Sair Input 2 defrost sensor S5 Input 3 condenser sensor Sc or digital input that can be configured for various functions as metion...

Page 8: ...ime Temperature Danfoss 80G8375 Compressor protection against high condensing temperature If the condenser is blocking up with dirt and thereby reaches a too high condensing temperature the controller...

Page 9: ...rmal thermostat set point and the alarm limits by a predefined offset value Figure 7 Reference displacement Danfoss 80G8474 Cabinet temp Thermostat ref disp Thermostat ref disp Time Ref displacement d...

Page 10: ...goes below the recorded temperature by the value set in parameter d30 before the configured defrost interval it will trigger defrost immediately This function can only be used in 1 1 systems This func...

Page 11: ...ost 2 6 C Time Sair DI1 AP3 MT Natural defrost defrost stop by Sair 2 6 C Sair temp Sair DI1 AP4 Heating Thermostat 30 70 C NA Sair DI1 AP5 Fully configurable simplified application Cooling Heating 1...

Page 12: ...0 C NA Sair NC DI1 DI2 1 The digital inputs DI1 and DI2 can be configured for multiple functions refer Parameters o02 and o37 1 The digital inputs DI1 and DI2 can be configured for multiple functions...

Page 13: ...nu code o02 Digital input configurable to the functions listed under menu code o37 Electric noise Cables for sensors and DI inputs must be kept separate from other electric cables Use separate cable t...

Page 14: ...default value eg AP0 flashing Choose the application type by pressing UP DOWN and press SET to confirm The controller presets parameter values according to the selected application and does not hide r...

Page 15: ...rameter menu display will show cFg Enter CFg menu by pressing SET button diaplay will show first parameter r12 main switch Select r12 by pressing SET button again and set the main switch to oFF r12 0...

Page 16: ...s PULL DOWN button again for 3 seconds to stop the pull down Danfoss 80G8441 A A Temperature and alarm codes alternate flashes until the alarm is resolved The alarm bell is shown Open the o37 DI2 Conf...

Page 17: ...d is locked any button press shows LoC in the display Press UP and DOWN buttons simultaneously for 3 seconds to unlock the keyboard unl is displayed for 3 seconds Figure 15 Unloack keyboard Danfoss Cl...

Page 18: ...t in of compressor relay Compressor relay will cut in when the cabinet temperature reaches the set point differetial In case of heating application heater will cut in when the temperature reaches the...

Page 19: ...ed and compressor is stopped It is restricted to starting again until alarm is reset manually Manual reset of con denser block alarm can be performed by power cycling the controller either by main swi...

Page 20: ...down This parameter defines the time delay to start the defrost after pull down cycle This has to ensure defrost doesnot happen immedietely after pull down cycle 0 960 min Fan Table 11 Fan Code Parame...

Page 21: ...or action on doo o67 Save settings as factory This parameter when set to YES The current controller Parameter settings are stored as Factory default WARNING Original factory settings are overwritten n...

Page 22: ...number of cycles On reaching 999x100 cycles the counts stops and is reset to 0 0 999 o24 Relay 2 counter The number of cycles for the DO2 relay can be read in this menu The read value is multiplied by...

Page 23: ...mp alarm during pull down start up defrost A12 0 240 min 60 60 90 90 NA 60 High temp alarm limit A13 100 0 200 0 C 8 0 16 0 10 0 10 0 80 0 8 0 Low temp alarm limit A14 100 0 200 0 C 30 0 0 0 0 0 0 0 1...

Page 24: ...ing Heating rE Cooling Ht Heating o07 2 rE Ht rE rE 1 rE 1 rE 1 Ht 1 rE Display Resolution o15 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 Predefined applications o61 2 AP0 AP5 AP0 AP1 AP2 AP3 AP4 AP5 Save sett...

Page 25: ...down limit temperature r97 100 0 200 0 C 0 0 0 0 0 0 0 0 0 0 0 0 Alarm Table 23 Alarm Function Code Min Max Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7 Alarm A Delay for temp alarm during normal conditions...

Page 26: ...pressor Heater minimum OFF time C02 0 30 min 2 2 2 2 2 2 2 2 Compressor OFF delay at open door C04 0 900 Sec 900 900 900 900 900 900 60 1 900 Zero crossing selection YES no C70 no YES YES YES YES YES...

Page 27: ...ion Code Min Max Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7 Configuration cFg Main switch 1 Service 0 OFF 1 ON r12 1 1 1 1 1 1 1 1 1 1 Predefined applications o61 2 AP0 AP7 AP0 AP1 AP2 AP3 AP4 AP4 AP6 AP7 C...

Page 28: ...P6 AP7 Defrost d Defrost Method no None nAt Natural EL Elec tric gAS Hot gas d01 no gAS EL nAt EL EL EL EL EL Defrost stop temperature d02 0 0 50 0 C 6 0 6 0 6 0 6 0 Defrost Interval d03 0 240 hour 8...

Page 29: ...Alarm o36 2 Lig ALA Lig Lig Lig Lig Lig Lig Lig Lig DI2 configuration nC Not configured Sdc Status display output doo Door alarm with resumption doA Door alarm without resumption SCH Main switch nig...

Page 30: ...ature in cabinet is too low A99 High Volt alarm Supply voltage is too high compressor protection AA1 Low Volt alarm Supply voltage is too low compressor protection A61 Condenser alarm Condenser temp t...

Page 31: ...le length 1 5 m Accuracy Measuring range 40 105 C 40 221 F Controller accuracy 1 K below 35 C 0 5 K between 35 25 C 1 K above 25 C Type of action 1B relay Output DO1 Relay 1 16 A 16 16 A EN 60730 1 10...

Page 32: ...e panel Slide the clips towards mounting surface until controller is firmly fixed To remove the controller one needs to skillfully unlatch the snapping tab and pull the clips backwards Dimensions Figu...

Page 33: ...too low or too high Check A A72 Check A A73 Check A A75 Defrost does not start Controller in pull down mode Check r r96 Pull down does not start Pull down max duration is 0 Check r r96 Pull down limi...

Page 34: ...4B4404 Thermo plastic polyester 8x30 1 5 m 1 084N1220 Thermo plastic polyester 8x30 3 5 m 1 084N1221 EKS 221 NTC 10000 ohm 25 C Beta 3435 at 25 85 C Thermo plastic rubber 6x5x15 3 5 m 150 084N3206 The...

Page 35: ...status at danfoss com or contact your local Danfoss representative if you have any questions Certificates declarations and approvals R290 R600a end use applications employing in accordance with the I...

Page 36: ...ations manuals and guides 3D models and drawings case stories brochures and much more Start searching now at www danfoss com en service and support documentation Danfoss Learning Danfoss Learning is a...

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