Danfoss ERC 21X Series Electronic Refrigeration Controller
Smart multipurpose refrigeration controller
Introduction
Application
The ERC 21X is a smart multipurpose refrigeration controller designed to fulfill today's requirement of commercial refrigeration applications. This controller is suitable for high, medium and low temperature applications with natural, electrical and hot gas defrost compatibilities.
Typical applications include Glass door merchandisers, commercial fridges and freezers, cold rooms and various other commercial refrigeration applications.
General description
The ERC 21X controller comes with four push buttons, a big display, easy and intuitive menu structure and pre-defined applications ensure ease of use. The controller is loaded with energy efficiency features like smart evaporator fan management, night mode, and defrosts on demand features.
A high capacity 16 A relay enables direct connection of heavy loads without the use of an intermediate relay: up to 2 hp compressors depending on its power factor and motor efficiency (power factor greater than 0.65 for 230 V and greater than 0.85 for 115 V).
Safe operation of the unit is ensured through voltage protection, zero cross switching, and high condenser temperature protection features.
ERC 21X series
Three versions of the ERC 21X are available in both 230 V AC, 50/60HZ and 115 V AC, 60Hz:
- ERC 211: Single relay output for refrigeration and heating applications.
- ERC 213: Three relays outputs for ventilated refrigeration and heating applications.
- ERC 214: Four relays outputs for ventilated refrigeration and heating applications.
ERC 211
The ERC 211 has one relay output and two inputs (1 analogue, 1 analogue/digital). This controller can be used for either cooling or heating applications.
Functions
Voltage protection
The voltage protection ensures that the compressor motor is operating within safe voltage ranges. If the power supply voltage gets outside the specified high/low voltage cut-out ranges, the compressor is cut-out or restricted from starting. Normal compressor operation is resumed when the power supply voltage is back in the area between the high voltage cut-out limit and the low voltage cut-in limit.
Figure 4: Voltage protection illustrates this concept with a graph showing voltage limits over time.
Compressor protection
The compressor protection feature protects the compressor from short ON and OFF cycles by securing minimum run and stop time. This would allow the refrigeration system to stabilize before starting the compressor again and also avoid the chances of too many compressor cycles.
Figure 5: Compressor protection visually represents this with graphs of temperature and power to the compressor.
Compressor protection against high condensing temperature
If the condenser is blocking up with dirt and thereby reaches a too high condensing temperature, the controller will give the user early warning through condenser alarm. If the temperature rises further, it will switch the compressor OFF. If the temperature measured by the condenser sensor (Sc) is reaching the set “pre-alarm limit”, an alarm is raised, but no further action is taken. This is used to indicate to the user that something is wrong with the condenser. Often the reason is that the air flow to the condenser is restricted (dirt) or because the condenser fan is broken.
The alarm will reset if the condenser temperature drops back by 5 °C. If the measured condenser temperature continues to increase and reaches the set “Block limit”, the compressor is stopped, and it is restricted from starting again until the alarm is reset manually. The alarm can be reset manually by setting the parameter r12 Main switch to OFF position and back to ON position or by powering the controller down.
Figure 6: Compressor protection against high condensing temperature shows a graph of Sc temperature and compressor status.
Reference displacement
This feature enables the user to toggle between two different set-points quickly by activating a switch on digital input. This provides the facility to switch between two storage temperatures without getting into the menu. For example, meat requires different set points than vegetables. The reference displacement signal changes the normal thermostat set-point and the alarm limits by a predefined reference displacement offset value (r40).
Figure 7: Reference displacement displays a graph illustrating how cabinet temperature changes with reference displacement.
Night mode
Night mode helps to reduce cooling load and thereby power consumption during non-business hours, i.e., night time. The thermostat set point will be offset by a fixed value during night mode, keeping alarm limits the same.
Figure 8: Night mode illustrates the temperature profile during night mode.
Fan cycling during compressor OFF cycle
During compressor OFF cycle, the controller will run the fan with a defined duty cycle to maintain uniform temperature and delay the need for compressor switching ON.
Figure 9: Fan cycle shows the fan and compressor status over time.
Defrost on Demand
This feature records the evaporator temperature when it is clean and constantly monitors it at every compressor cut-out. If the evaporator temperature 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 function is disabled when the parameter “d30” is set to 20.
- Defrost on demand is triggered only if the time since the last defrost session has ended is greater than ¼ of the defrost interval or 2 hours, whichever is lesser.
- Defrost doesn't start by this method during the following scenarios:
- Pull down mode
- Night mode
- Main switch in DI or main switch in Menu is in OFF position
- Manual control mode
- Evaporator temperature greater than 0 °C.
Applications
Pre-defined applications
The purpose of the pre-defined applications is to give the user an easy and fast way to configure the controller to a specific application based on storage temperature (LT, MT, HT), defrost type (none, natural, electrical), and defrost method (terminated on time or temperature).
When a user selects a specific application based on their requirements, the controller will load a specific set of parameter values and hide parameters that are not relevant for the selected application. Adjustment of the set of parameters value will still be possible at any time.
In addition to pre-defined applications, all controller versions have two standard applications: one with a full list of parameters and another with a simplified list of parameters, that allows the user to make their own customized parameter settings (AP0 and AP5 in case of ERC 211, and AP0 and AP6 in case of ERC 213 / ERC 214).
ERC 211 controller
| APP | Description | Temp. range | Defrost end | DO1 | AI1 | DI1(1) |
|---|---|---|---|---|---|---|
| AP0 | Fully Configurable Standard Application (Cooling / Heating) | NA | ||||
| AP1 | MT, No defrost | 4 – 20 °C | NA | Sair | DI1 | |
| AP2 | MT, Natural defrost | 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 | DI1 | ||
| AP5 | Fully configurable simplified application (Cooling / Heating) |
(1) The digital inputs DI1 can be configured for multiple functions (refer parameter "o02").
ERC 213 controller
| APP | Description | Temp. range | Defrost end | DO1 | DO2 | DO3 | AI1 | AI2 | DI1(1) | DI2(1) |
|---|---|---|---|---|---|---|---|---|---|---|
| AP0 | Fully Configurable Standard Application (Cooling / Heating) | |||||||||
| AP1 | MT, Natural defrost, Alarm, fan | 2 – 6 °C | By time | Sair | NC | DI1/Sc | DI2 | |||
| AP2 | MT, Electrical defrost, Fan | 0 – 4 °C | By time | Sair | NC | DI1/Sc | DI2 | |||
| AP3 | LT, Electrical defrost, fan | -24 – -18 °C | By time | Sair | NC | DI1/Sc | DI2 | |||
| AP4 | MT, Electrical defrost, Fan | 0 – 4 °C | By temp(S5) | Sair | S5 | DI1/Sc | DI2 | |||
| AP5 | LT, Electrical defrost, Fan | -26 – -20 °C | By temp(S5) | Sair | S5 | DI1/Sc | DI2 | |||
| AP6 | Fully configurable simplified application (Cooling / Heating) | |||||||||
| AP7 | Heating Thermostat | 30 – 70 °C | NA | Sair | NC | DI1 | DI2 |
(1) The digital inputs DI1 and DI2 can be configured for multiple functions (refer Parameters "o02" and "o37"). NC = Not configured
ERC 214 controller
| APP | Description | Temp. range | Defrost end | DO1 | DO2 | DO3 | DO4 | AI1 | AI2 | DI1(1) | DI2(1) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AP0 | Fully Configurable Standard Application (Cooling / Heating) | ||||||||||
| AP1 | MT, Natural defrost, Alarm, fan | 2 – 6 °C | By time | Sair | NC | DI1/Sc | DI2 | ||||
| AP2 | MT, Electrical defrost, Fan | 0 – 4 °C | By time | Sair | NC | DI1/Sc | DI2 | ||||
| AP3 | LT, Electrical defrost, fan | -24 – -18 °C | By time | Sair | NC | DI1/Sc | DI2 | ||||
| AP4 | MT, Electrical defrost, Fan | 0 – 4 °C | By temp(S5) | Sair | S5 | DI1/Sc | DI2 | ||||
| AP5 | LT, Electrical defrost, Fan | -26 – -20 °C | By temp(S5) | Sair | S5 | DI1/Sc | DI2 | ||||
| AP6 | Fully configurable simplified application (Cooling / Heating) | ||||||||||
| AP7 | Heating Thermostat | 30 – 70 °C | NA | Sair | NC | DI1 | DI2 |
(1) The digital inputs DI1 and DI2 can be configured for multiple functions (refer Parameters "o02" and "o37"). NC = Not configured
Electrical connection diagram
Table 4: Electrical connection diagram provides connection details for ERC 211, ERC 213, and ERC 214 controllers.
ERC 211: Terminals 1-4 are for power supply (115/230V) and digital outputs (DO1). Terminals 5-14 are for GND, TX, RX, +5V. Inputs include DO1, Sair, DI/Sc.
ERC 213: Terminals 1-4 are for power supply (115/230V) and digital outputs (DO1, DO2, DO3). Terminals 5-14 are for GND, TX, RX, +5V. Inputs include DO1, Sair, S5, Sc/DI1, DI2.
ERC 214: Terminals 1-4 are for power supply (115/230V) and digital outputs (DO1, DO2, DO3, DO4). Terminals 5-14 are for GND, TX, RX, +5V. Inputs include DO1, Sair, S5, Sc/DI1, DI2.
Note: Cables for sensors, DI inputs, and data communication must be kept separate from other high voltage cables to avoid electric noises. Use separate cable trays and maintain a distance of at least 10 cm between cables. Long cables at the DI input should be avoided.
Connector tightening torque and wire sizes:
- Power connectors: wire size = 0.5 – 1.5 mm², max. tightening torque = 0.4 Nm
- Low voltage signal connectors: wire size = 0.15 – 1.5 mm², max. tightening torque = 0.2 Nm
- 2L and 3L must be connected to the same phase.
Configuration
Menu navigation and overview
Table 5: Key functions describes button operations:
- Scroll up/down: Short press (< 1 second)
- Main switch ON/OFF: Press and hold (~ 3 seconds)
- Factory reset: Press and hold at Power up
- Back function: Short press (< 1 second)
- Pull down start/stop: Press and hold (~3 seconds)
- Defrost Start/Stop: Press and hold (~3 seconds)
- Set point change or OK: Short press (< 1 second)
- Enter Menu: Press and hold (~ 3 seconds)
Table 6: Display icons shows common icons:
- Night mode (Energy saving)
- Fan running
- Compressor running (Flashes in pull-down mode)
- Active alarm
- Defrost
- Unit (°C or °F)
Quick configuration at power up
- STEP 1: Power on
- STEP 2: Select the quick configuration menu: Within 30 seconds of power on, press [BACK] for 3 seconds. The main switch "r12" is automatically set to OFF.
- STEP 3: Select pre-installed application o61: The display automatically shows the application selection parameter "o61". Press [SET] to select the pre-installed application. The display shows the default value (e.g., “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 relevant parameters. (Tip: You can easily move from AP0 to AP6 by pressing the [UP] key for a circular list.)
- STEP 4: Select sensor type "o06": The display automatically shows sensor selection parameter "o06". Press [SET] to select the sensor type. The display shows the default value (e.g., "n10" flashing). Choose sensor type by pressing [UP]/[DOWN] (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000) and press [SET] to confirm. Note: All sensors must be the same type.
- STEP 5: Configure DO4 output "o36": The display automatically shows the o36 parameter to configure “DO4” output (available only in 4-relay models). Select "Lig" (Light) or "ALA" (Alarm) as per the application and press [SET] to confirm. The display returns to normal display mode, and the control starts.
Note: Refer to Pre-defined applications for a complete description of the available applications.
Quick configuration via cFg menu
- Press [SET] button for 3 seconds to access the parameter menu (display will show "cFg").
- Enter "CFg" menu by pressing [SET] button (display will show first parameter "r12" main switch).
- Select "r12" by pressing [SET] button again and set the main switch to "OFF" (r12=0).
- Press [BACK] button (<) to come back to "CFg" menu.
- Press [DOWN] button to scroll through the "cFg" menu parameter list.
- Open the "o61 application mode" and select the needed application mode (Press [SET]).
- Open the "o06 Sensor type" and select the temperature sensor type used (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000) (Press [SET]).
- Open the "o02 DI1 Configuration" and select the function associated to digital input 1 (Press [SET]).
- Open the "o37 DI2 Configuration" and select the function associated to digital input 2 (Press [SET]).
- Navigate back to parameter "r12 Main switch" and set it in "ON" position to start control.
- Go through other parameters' default settings and change wherever needed.
Figure 10: Configuration illustrates the parameter navigation flow.
Figure 11: Adjust Setpoint shows how to change the setpoint using the [SET], [UP]/[DOWN] buttons.
Figure 12: Initiate a manual defrost explains how to start/stop defrost using the [DEFROST] button.
Figure 13: Initiate a pull down explains how to start/stop pull down using the [PULL DOWN] button.
Figure 14: View active alarm describes how alarms are displayed.
Figure 15: Unlock keyboard shows how to unlock the keypad.
Factory resetting
The controller can be set back to factory settings by using the following procedure:
- Power OFF controller.
- Keep [UP] and [DOWN] arrow buttons pressed while reconnecting the supply voltage.
- When the code "Fac" is shown in the display, select "yes".
Note: The OEM factory setting will either be the Danfoss factory settings or a user-defined factory setting if one has been made. The user can save their setting as OEM factory setting via parameter o67.
Display codes
| Code | Description |
|---|---|
| -d- | Defrost cycle is in progress |
| Pud | A temperature pulldown cycle has been initiated |
| Err | The temperature cannot be displayed due to a sensor error |
| --- (top) | Shown in top of display: The parameter value has reached max. Limit |
| --- (bottom) | Shown in bottom of display: The parameter value has reached min. Limit |
| Loc | The display keyboard is locked |
| UnL | The display keyboard has been unlocked |
| PS | The access code is required to enter the parameter menu |
| Axx/Exx | Alarm or error code flashing with normal temp. readout |
| OFF | Control is stopped as r12 Main switch is set OFF |
| On | Control is started as r12 Main switch is set ON (code shown in 3 seconds) |
| Fac | The controller is reset to factory setting |
Parameters
Parameter description
Configuration
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| cFg | Configuration | |||
| r12 | Main Switch With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed. Service (manual control of outputs allowed) (-1 in Controller Display) OFF (0 in Controller Display) ON (1 in Controller Display) |
-1 | 1 | |
| o61 | Predefined applications Predefined applications is to give the user an easy and fast way to configure the controller. Users can set appropriate application that meets their requirements under this menu (please refer predefined applications table under section 2.4 for more details). Predefined application is protected by main switch. |
AP0 | AP7 | |
| o07 | Select main application type for which controller is used rE= Cooling Ht= Heating |
rE | Ht | |
| o06 | Sensor type This parameter defines the type of temperature sensors connected to the controller. Below sensor types can be used in ERC21x n5=NTC 5K (5000 Ohm at 25 °C, Beta value=3980 @25/100 °C) n10= NTC 10 (10000 Ohm at 25 °C, Beta value = 3435 @ 25/100 °C) pt1= PT1000 ptc= PTC All the mounted sensors (Sair, S5 and Sc)must be of same type. |
n5 | ptc | |
| o71 | This parameter defines the desired configuration for Relay 2 (DO2) dEF=Defrost ALA=alarm Lig=Light |
dEF | Lig | |
| o36 | This parameter defines the desired configuration for Relay 4 (DO4). Applicable only for ERC214. Lig=Light ALA=alarm |
Lig | ALA |
Thermostat
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| r-- | Thermostat | |||
| r00 | SetPoint This parameter defines the desired cabinet temperature at which compressor cuts out. The set point can be locked to a range within r02 and r03 settings. |
-100.0 | 200.0 | °C |
| r01 | Differential This defines the difference between the cut-out and the cut-in of compressor relay. Compressor relay will cut-in when the cabinet temperature reaches the set point+ differential. In case of heating application, heater will cut-in when the temperature reaches the set point-differential. |
0.1 | 20.0 | K |
| r02 | Maximum Set Point limitation The maximum allowable setpoint value can be configured here that would avoid setting too high values by mistake. |
-100.0 | 200.0 | °C |
| r03 | Minimum Set Point limitation The minimum allowable setpoint value can be configured here that would avoid setting too low values by accident/mistake. |
-100.0 | 200.0 | °C |
| r04 | Display offset Correction value in display temperature. If the temperature of the products / cabinet and the temperature received by the controller are not identical, an offset adjustment of the display temperature can be carried out using this parameter. |
-10.0 | 10.0 | K |
| r05 | Display Unit Set here if the controller is to show temperature values in °C or in °F. Switching from one to the other will cause all temperature settings to be automatically updated to respective unit. |
-C | -F | |
| r09 | Calibration of Sair This parameter is a relative value and allows adjustment of the Sair sensor temperature. For instance, at a measured temperature of 7 °C and r09 set to 2K, the input from the Sair sensor will be 9 °C instead. |
-20.0 | 20.0 | K |
| r12 | Main Switch With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed. Stopped refrigeration will give a "OFF" signal on the display. -1=service (manual control of outputs allowed) 0=OFF 1=ON |
-1 | 1 | |
| r13 | Night setback value The thermostat's reference can be offset by this value during night or when there is no usage. Offset can be set both positive and negative sides (Select a negative value if there is to be cold accumulation). Activation can take place via digital input. |
-50.0 | 50.0 | K |
Alarm settings
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| A-- | Alarm settings | |||
| A03 | Delay for temperature alarm during normal conditions High and low temperature alarm will be delayed by this value after crossing the set alarm limits. The alarm will not become active until the set time delay has been passed. |
0 | 240 | min |
| A12 | Delay for temperature alarm during pull-down/start-up/defrost Controller uses this time delay to trigger low and high temperature alarms during start-up, defrost and pull-down modes |
0 | 240 | min |
| A13 | High temperature alarm limit If the cabinet temperature stays above this limit for the time mentioned by the alarm delay parameters, high temperature alarm is raised. |
-100.0 | 200.0 | °C |
| A14 | Low temperature alarm limit If the cabinet temperature stays below this limit for the time mentioned by the alarm delay parameters, low temperature alarm is raised. |
-100.0 | 200.0 | °C |
| A27 | DI1 delay If Di1 is configured as a door open alarm or as an external alarm, this delay is used to raise the respective alarm. |
0 | 240 | min |
| A28 | DI2 delay If Di2 is configured as a door open alarm or as an external alarm, this delay is used to raise the respective alarm. |
0 | 240 | min |
| A37 | Condenser high alarm limit If the condenser temperature reaches above this limit, condenser alarm is raised immediately and no action is taken. The alarm is reset if temperature falls 5 K below the set temperature. |
0 | 200 | °C |
| A54 | Condenser High block limit If the condenser temperature continues to increase above the A37 limit and reaches this temperature limit, condenser block alarm is raised and compressor is stopped. It is restricted to starting again until alarm is reset manually. Manual reset of condenser block alarm can be performed by power cycling the controller either by main switch button or input supply. |
0 | 200 | °C |
| A72 | Voltage protection This parameter is to enable and disable the voltage protection feature, which protects compressor from adverse line voltage conditions. |
no | YES | |
| A73 | Minimum cut-in voltage When the compressor is due to start, the voltage of the power supply will be checked and the compressor is allowed to start if the supply voltage is greater than this value. |
0 | 270 | V |
| A74 | Minimum cut-out voltage When the compressor is running, it will be switched OFF if the supply voltage goes below this value. |
0 | 270 | V |
| A75 | Maximum voltage When the compressor is running, it will be switched OFF if the supply voltage exceeds this value. |
0 | 270 | V |
Defrost
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| d-- | Defrost | |||
| d01 | Defrost type Selection of desired defrost type no= No defrost (defrost function disabled) nAt = Natural defrost (Off cycle defrost) EL = Electrical defrost gAS = Hot gas defrost |
no | gAS | |
| d02 | Defrost stop temperature This parameter defines at what temperature the defrost cycle will stop. Defrost can be stopped based on either evaporator sensor or by the cabinet temperature sensor as defined in menu code d10. |
0.0 | 50.0 | °C |
| d03 | Defrost interval Defines the maximum time period between the start of two defrost cycles. In case of power failure elapsed time is stored in the memory and next defrost will happen considering the stored time interval. |
0 | 240 | hour |
| d04 | Maximum defrost time This parameter defines the maximum time defrost will be performed. In case of temperature based defrost this is treated as safety time to stop the defrost if it is not terminated based on the temperature. |
0 | 480 | min |
| d05 | Defrost delay at power up (or DI signal) This parameter decides the time offset when the defrost is triggered by digital inputs or during power up. This function is only relevant if you have several refrigeration appliances or groups where you want the defrost to be staggered in relation to one another. |
0 | 240 | min |
Fan
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| F-- | Fan | |||
| F01 | Fan control during compressor off cycle This parameter define the fan operation during compressor off cycle. FAo=Fan always ON FFC=Fan follow compressor (Fan is switched off during compressor off cycle) FPL= Fan Cycling |
FAo | FPL | |
| F04 | Fan stop evaporating temperature This parameter defines the maximum evaporator temperature at which the Fan must switch OFF. If the defrost sensor registers a higher temperature than the one set here, the fans will be stopped to avoid the warm air circulation in the cabinet. |
-50.0 | 50.0 | °C |
| F07 | Fan ON cycle This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan ON time will be as per the time set in this parameter. |
0 | 180 | min |
| F08 | Fan OFF cycle This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan OFF time will be as per the time set in this parameter. |
0 | 180 | min |
Compressor
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| C-- | Compressor | |||
| C01 | Compressor minimum ON time This parameter determines the minimum number of minutes the compressor must run before a cut-out can take effect based on temperature. This is to avoid sudden switching ON and OFF of the compressor. When used for Heating application, suggest to set this value 0 to avoid any overheating. |
0 | 30 | min |
| C02 | Compressor minimum OFF time This parameter determines the minimum number of minutes the compressor must switched OFF before a cut-in can take effect based on temperature. This is to avoid sudden switching OFF and ON of the compressor. |
0 | 30 | min |
| C04 | Compressor OFF delay at door open This parameter sets the delay to stop the compressor when the door is opened. If set to 900, the function is disabled. |
0 | 900 | sec |
| C70 | Zero crossing selection This feature will increase the relay life time, reduce the contact welding and switching noise by switching ON at Zero crossing. Disable zero crossing when external relay is used. |
no | YES |
Miscellaneous
| Code | Parameter description | Min. | Max. | Unit |
|---|---|---|---|---|
| o-- | Others | |||
| o01 | Delay of outputs at startup After start-up the controller functions can be delayed by the time delay defined here so that overloading of the electricity supply network is avoided. |
0 | 600 | sec |
| o02 | DI1 configuration nC= Not configured Sdc = Status display output doo = Door alarm with resumption doA = Door alarm without resumption SCH = Main switch nig = Day/Night mode rFd = Reference displacement EAL = External alarm dEF = Defrost Pud = Pull down Sc = Condensor Sensor |
nC | Sc | |
| o03 | Serial Address Data communication is possible by using external TTL to RS485 converter |
0 | 247 | No |
| o05 | Password If the settings in the controller are to be protected with an access code you can set a numerical value between 0 and 999. You can cancel the function by setting to 0. |
0 | 999 | No |
| o15 | Display Resolution This parameter defines the steps in which the temperature must be displayed by 0.1 or 0.5 or 1 |
0.1 | 1.0 | |
| o37 | DI2 configuration nC= Not configured Sdc = Status display output doo = Door alarm with resumption doA = Door alarm without resumption SCH = Main switch, nig = Day/Night mode rFd = Reference displacement EAL = External alarm dEF = Defrost Pud = Pull down |
nC | Pud | |
| o38 | This defines the method to control cabinet light on= Always on dAn = Day/Night doo=Based on door action |
on | doo | |
| o67 | Save settings as factory WARNING: Original factory settings are overwritten |
no | YES | |
| o91 | Display during defrost You can set what is to be displayed during defrost here. Air = actual air temperature FrE = freezed temperature (display the temperature just before starting defrost) -d- = -d- is displayed |
Air | -d- | |
| P73 | DI1 input polarity no (normally open) = associated functionality is activated when DI1 port is short circuit and deactivated when DI1 port is open circuit. nc (normally closed) = associated functionality is activated when DI1 port is open circuit and deactivated when DI1 port is short circuit. |
no | nc | |
| P74 | DI2 input polarity no (normally open) = associated functionality is activated when DI2 port is short circuit and deactivated when DI2 port is open circuit. nc (normally closed) = associated functionality is activated when DI2 port is open circuit and deactivated when DI2 port is short circuit. |
no | nc | |
| P75 | Invert alarm relay 0=normal, 1= invert relay action |
0 | 1 | |
| P76 | Key board lock enable Setting this parameter as "YES" enables controller keypad lock functionality after 5 minutes of no activity on the keypad. When the keypad 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. |
no | YES |
Parameters: ERC 211
| Function | Code | Min. | Max. | Unit | AP0 | AP1 | AP2 | AP3 | AP4 | AP5 |
|---|---|---|---|---|---|---|---|---|---|---|
| Configuration | cFg | |||||||||
| Main switch (-1=Service, 0=OFF, 1=ON) | r12 | -1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Predefined applications | o61(2) | AP0 | AP5 | AP0 | AP1 | AP2 | AP3 | AP4 | AP5 | |
| Cooling/Heating (rE=Cooling, Ht= Heating) | o07(2) | rE | Ht | rE | rE(1) | rE(1) | rE(1) | Ht(1) | rE | |
| Sensor type selection (n5=NTC 5K, n10=NTC10K, ptc=PTC, pt1=PT1000) | o06(2) | n5 | ptc | n10 | n10 | n10 | n10 | n10 | n10 |
Parameters: ERC 213
Parameters: ERC 214
Product specification
Technical specification
| Features | Description |
|---|---|
| Purpose of control | Operating temperature sensing control suitable for incorporation into commercial air-conditioning and refrigeration applications |
| Construction of control | Incorporated control |
| Power supply | 115 V AC / 230 V AC 50/60 Hz, galvanic isolated low voltage regulated power supply |
| Rated power | Less than 0.7 W |
| Inputs | Sensor inputs, Digital inputs, Programming key Connected to SELV limited energy <15 W |
| Allowed sensor types | NTC 5000 Ohm at 25 °C, (Beta value=3980 at 25/100 °C - EKS 211) NTC 10000 Ohm at 25 °C, (Beta value=3435 at 25/85 °C - EKS 221) PTC 990 Ohm at 25 °C, (EKS 111) Pt1000, (AKS 11, AKS 12, AKS 21) |
| Sensors included in kit Solution | NTC 10000 Ohm at 25 °C, cable 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 FLA / 60 LRA at 230 V, UL60730-1 16 FLA/72 LRA at 115 V, UL60730-1 DO2 - Relay 2: 8 A, 2 FLA/12 LRA, UL60730-1 8 A, 2 (2 A), EN60730-1 DO3 - Relay 3: 3 A, 2 FLA/12 LRA, UL60730-1 3 A, 2 (2 A), EN60730-1 DO4 - Relay 4: 2 A |
| Display | LED display, 3 digits, decimal point and multi-function icons, °C + °F scale |
| Operating conditions | -10+55 °C (14-131 °F), 90% Rh |
| Storage conditions | -40-+70 °C (-40- +158°F), 90% Rh |
| Protection | Front: IP65 (Gasket integrated) Rear: IPOO |
| Environmental | Pollution degree II, non-condensing |
| Overvoltage category | II - 230 V supply version - (ENEC, UL recognized) III - 115 V supply version - (UL recognized) |
| Resistance to heat and fire | UL94-V0 Temperature for ball pressure test statement According to Annex G (EN 60730-1) |
| EMC category | Emission: IEC/EN 61000 6-3, Immunity: IEC/EN 61000 6-2 |
Mounting
Figure 16: Mounting and Figure 17: Dismounting show the physical installation process.
Installation and Accessories
Installation steps
- Place the wired controller in the slot and ensure rubber sealing is resting properly on the mounting surface.
- Slide the mounting clips along the rails of the rear plastic from the rear side of the panel.
- Slide the clips towards the mounting surface until the controller is firmly fixed.
- To remove the controller, one needs to skillfully unlatch the snapping tab and pull the clips backwards.
Dimensions
Figure 18: Dimensions (mm) provides a diagram showing the controller's dimensions and drilling template.
Accessories
KoolKey (EKA200)
KoolKey acts as a gateway to connect PC tool KoolProg and also as a programming key.
Figure 19: KoolKey (EKA 200) as gateway and Figure 20: KoolKey (EKA 200) as programming key illustrate its use.
Mass Programming Key (EKA 201)
Mass Programming Key is a simple programming key for programming the controller in production assembly line.
Figure 21: Mass Programming Key (EKA 201) illustrates its connection.
Ordering
ERC 21X controllers
| Type | Description | Relay | Qty. | Code no. |
|---|---|---|---|---|
| ERC 211 | ERC 211, Red LED, 115 V - Kit | 1 | 1 | 080G3451 |
| ERC 211, Red LED, 230 V - Kit | 1 | 1 | 080G3453 | |
| ERC 211, Controller, Red LED, 230 V | 1 | 1 | 080G3454 | |
| ERC 211, Controller, Red LED, 230 V, I-Pack | 1 | 30 | 080G3459 | |
| ERC 213 | ERC 213, Red LED, 230 V - Kit | 3 | 1 | 080G3457 |
| ERC 213, Controller, Red LED, 230 V | 3 | 1 | 080G3458 | |
| ERC 213, Controller, Red LED, 230 V, I-Pack | 3 | 30 | 080G3460 | |
| ERC 213 Red, 115 V USA - Kit | 3 | 1 | 080G3467 | |
| ERC 213 Red, 230 V USA - Kit | 3 | 1 | 080G3469 | |
| ERC 214 | ERC 214, Controller, Red LED, 115 V - Kit | 4 | 1 | 080G3466 |
| ERC 214, Controller, Red LED, 230 V - Kit | 4 | 1 | 080G3463 |
Programming tools and other accessories
| Type | Description | Qty. | Code no. |
|---|---|---|---|
| EKA 200 | KoolKey - Gateway cum Programming key | 1 | 080N0020 |
| EKA 201 | Mass Programming Key | 1 | 080N0021 |
| Interface cable | Interface cable for ERC 21x, 1 m | 1 | 080N0326 |
Sensors
| Type | Sensor element | Sensor housing | Cable | Qty. | Code no. |
|---|---|---|---|---|---|
| EKS 211 | NTC 5000 ohm / 25 °C (Beta =3980 at 25/100 °C) | Thermo plastic polyester 8x30 | 1.5 m | 150 | 084B4403 |
| Thermo plastic polyester 8x30 | 3.5 m | 75 | 084B4404 | ||
| 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 |
| Thermo plastic rubber 6x5x15 | 3.5 m | 1 | 084N3210 | ||
| Thermo plastic rubber 6x5x15 | 8.5 m | 50 | 084N3208 | ||
| Thermo plastic rubber 6x5x15 | 8.5 m | 1 | 084N3209 | ||
| EKS 111 | PTC 990 ohm / 25 °C | Stainless steel 6x20 | 1.5 m | 150 | 084N3200 |
| Stainless steel 6x30 | 1.5 m | 1 | 084N1178 | ||
| Stainless steel 6x30 | 1.5 m | 150 | 084N1161 | ||
| Stainless steel 6x30 | 3.5 m | 1 | 084N1179 | ||
| Stainless steel 6x30 | 3.5 m | 150 | 084N1163 | ||
| Stainless steel 6x30 | 6 m | 1 | 084N1180 | ||
| Stainless steel 6x30 | 6 m | 80 | 084N1173 | ||
| Stainless steel 6x30 | 8.5 m | 60 | 084N1168 | ||
| AKS 11 | PT1000 | Top part: PPO (Noryl) Bottom: stainless steel |
3.5 m | 1 | 084N0003 |
| Top part: PPO (Noryl) Bottom: stainless steel |
5.5 m | 1 | 084N0005 | ||
| Top part: PPO (Noryl) Bottom: stainless steel |
8.5 m | 1 | 084N0008 | ||
| AKS 12 | PT1000 | Stainless steel 6x40 | 1.5 m | 1 | 084N0036 |
| Stainless steel 6x40 | 1.5 m | 30 | 084N0035 | ||
| Stainless steel 6x40 | 3.5 m | 30 | 084N0039 | ||
| Stainless steel 6x40 | 5.5 m | 30 | 084N0038 |
Note: All the mounted sensors must be of same type.
Certificates, declarations, and approvals
The list contains all certificates, declarations, and approvals for this product type. Individual code numbers may have some or all of these approvals, and certain local approvals may not appear on the list.
Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.
Certificates, declarations, and approvals
| Regulatory and Compliance | Directive / Document topic | Standards | Country - Marking |
|---|---|---|---|
| Electrical Safety (Incorporated Control for use in Class I or Class II equipment) | Low Voltage Directive: 2014/35/EU | EN IEC 60730-2-9:2019, EN IEC 60730-2-9:2019/A1:2019, EN IEC 60730-2-9:2019/A2:2020, EN 60730-1:2016, EN 60730-1:2016/A1:2019, EN 60730-1:2016/A2:2022 | Europe - CE |
| Electrical Safety (control is validated to use as Incorporated) | Recognized Component | UL 60730-1 - 2009 - Revision 2014, UL 60730-2-9 : 2010, Revision : 2013 | United States - CURUS |
| Electrical Safety (control is validated to use as Incorporated) | Recognized Component | CSA E60730-1 :2013, CSA E60730-2-9 : 2001, Revision : 2008, AMD 1 | Canada - CURUS |
| Electrical Safety (Incorporated Control for use in Class I or Class II equipment) | GB 14536.1:2008, GB 14536.10:2008 | China - CQC | |
| Electrical Safety & Electromagnetic Compatibility | Supplier Declaration of Conformity (SDoC) | EN 60730-1:2016, EN 60730 2-9:2019, EN 61000-6-2:2005 & EN 61000-6-3:2007+A1:2011 | Ukraine - UA |
| Electrical Safety | Certification of Conformity (CoC) | CU TR 004/2011 | Eurasia - EAC |
| Electromagnetic Compatibility | EMC Directive: 2014/30/EU | EN 61000-6-2:2005 & EN 61000-6-3:2007+A1:2011 | Europe - CE |
| RoHS | RoHS Directive: 2011/65/EU & 2015/863/EU | EN IEC 63000:2018 | Europe - CE |
| Food Safety | Food Equipment | NSF/ANSI standard 2 | United States |
| Approved for use in Flammable Refrigerants | Enclosed Break Device / sealed device nC (Relays) | Sealed Device "nC" IEC 60079-15:2017, Europe Enclosed-Break device "dC" IEC 60079-1:2014, clause 15.5.3 |
Europe |
| Approved for use in Flammable Refrigerants | Enclosed Break Device (Relays) | Sealed device "nC" UL 60079-15 and CAN/CSA C22.2 No. 60079-15, Enclosed-Break device "DC" IEC 60079-1:2014, clause 15.5.3 | US and Canada |
| Enclosure Material Flammable Class | UL 94, V-0 | US | |
| HACCP, Temperature Measuring probe in compliance with EN13485 Class I, when used with AKS 12 sensor | EN 13485:2001 | Europe | |
| Certification and Manufacturer Declarations on Conformity | CE, CURUS, CQC, UA, EAC, NSF, ROHS |
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