Danfoss ERC 211 User manual

www.danfoss.com/erc
User manual | ERC 21X temperature controllers series
4
push buttons, a
big display and
an intuitive menu
structure ensure
superior ease of use.
ERC 21X, smart multipurpose
refrigeration controller

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
Table of contents
1| Introduction 4
1.1| Application 4
1.2| General Description 4
1.3| ERC 21X Series 5
1.3.1| ERC 211 5
1.3.2| ERC 213 5
1.3.3| ERC 214 5
2| Key features 6
2.1| Voltage protection 6
2.2| Compressor protection 6
2.3| Compressor protection against high condensing temperature 6
2.4| Pre-defined applications 7
2.5| Fan pulsating during compressor OFF cycle 9
2.6| Defrost on Demand 10
3| Technical Specication 10
4| Installations 11
4.1| Dimensions (mm) 11
4.2| Mounting 11
4.3| Installation steps 11
4.4| Electrical connection diagram 12
4.4.1| ERC 211 - connection diagram 12
4.4.2| ERC 213 - connection diagram 12
4.4.3| ERC 214 - connection diagram 12
4.5| Power supply 13
4.6| Sensors 13
4.7| Electric noise 13
5| Menu Navigation and overview 13
5.1| Key functions and display Icons 13
5.2| Quick Configuration at power up 13
5.3| Menu Structure 14
5.4| Quick Configuration via“cFg” menu 15
5.5| Adjust set point temperature 15
5.6| Initiate a manual defrost 15
5.7| Initiate a pull down 15
5.8| View active alarm 15
5.9| Unlock keyboard 15
6| Menu functions 16
7| Parameter table 22
7.1| Parameter table - ERC 211 22
7.2| Parameter table - ERC 213 25
7.3| Parameter table - ERC 214 29
7.4| Alarm Code 33
7.5| Troubleshooting 33
8| Ordering 33

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
1| Introduction
1.1| Application
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.
1.2| General Description
ERC21X controller comes with four push buttons, a big
display, easy and intuitive menu structure and pre-defined
applications ensure ease of use. Controller is loaded
with energy efficiency features like smart evaporator fan
management, day/night mode and defrosts on demand
features.
High Effect 16 A relay enable direct connection of heavy
loads (up to 2 HP compressors without use of external relays).
A wide range of compatible types of sensors ensure high
flexibility in the installation.
Safe operation of the unit is ensured through voltage
protection and high condensation temperature protection
features.

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
1.3.1| ERC 211
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.
Outputs:
– Relay 1: compressor/solenoid valve control or simple
heater in case of heating application Inputs.
Inputs:
– Input1: cabinet/control sensor (Sair).
– Input 2: condenser sensor or digital inputs which can
be configured for various functions as mentioned under
menu code o02.
1.3.2| ERC 213
ERC 213 has three relays outputs and four inputs
(2 analogues, 1 analogue/digital, 1 digital) for cooling
applications.
Outputs:
– Relay 1: compressor/solenoid valve control.
– Relay 2: can be configured either defrost or external alarm.
– Relay 3: fan control.
Inputs:
– Input 1: cabinet/control sensor (Sair).
– Input 2: defrost sensor (S5).
– Input 3 : condenser sensor (Sc) or digital input which can
be configured to various functions as mentioned under
menu code “o02”.
– Input 4: digital input which can be configured to various
functions as mentioned under menu code “o37”
1.3.3| ERC 214
ERC 214 has four relays outputs and four inputs (2 analogue,
1 analogue/digital, 1 digital) for cooling applications.
Outputs:
– Relay 1: compressor/solenoid valve control.
– Relay 2: defrost control.
– Relay 3: fan control.
– Relay 4 : this can be configured for either light or external
alarm.
Inputs:
– Input 1: cabinet/control sensor (Sair).
– Input 2: defrost sensor (S5).
– Input 3 : condenser sensor (Sc) or digital input which can
be configured to various functions as metioned under
menu code “o02”.
– Input4: digital input which can be configured for various
functions as mentioned under menu code “o37”.
Sair
Sc
DO1
Sair
Sc
DI1
DI2
DO2
DO3
DO1
S5
Sair
Sc
DI1
DI2
DO4
DO2
DO3
DO1
S5
1.3| ERC 21X Series
Three version of ERC 21X is available in both 230 V / 50/60 Hz and 115 V / 60 Hz.
–ERC 211: single relay output for refrigeration and heating applications.
–ERC 213: three relays outputs for ventilated refrigeration applications.
–ERC 214: four relays outputs for ventilated refrigeration applications.

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2| Key features
2.1| Voltage protection
Protection against high and low voltage by limiting the
compressor operation within specified voltage limits.
Whenever the supply voltage goes beyond the defined
voltage protection limits controller will shut the compressor
OFF and flashes alarm on the display.
It will restore the operation when the voltage falls under the
operating range respecting minimum stop time.
2.2| Compressor protection
Parameters for Minimum ON and OFF time, protect the
compressor by short cycling/sudden switching ON and OFF
by defining minimum ON and OFF time.
2.3| Compressor protection against
high condensing temperature
If the condenser is blocking up with dirt and thereby reaches
a too high condensing temperature, controller will give
the user early warning through condenser alarm and if
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”a 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 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.
High voltage limit
High voltage cut-in
limit (compressor start)
Low voltage cut-out
limit (alarm and
compressor stop)
Power to compressor
min run time
ON
OFF
CUT-IN
CUT-OFF
min stop time
time
time
T
emperatur
e
Sc temperature °C
Sc temperature °C
Block limit
Pre alarm limit
Pre alarm OK
Compressor
Pre alarm
Block alarm
T1 T2 T3 T4

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2.4| Pre-defined applications
The purpose of the Predefined 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 user select specific application based on their requirements, the controller will load a specific set of parameter values
and will hide parameters that are not relevant for the selected application.
Adjustment of the set of parameters value will be still possible at any time.
In addition to pre-defined applications, all controller versions have two standard applications, one with full list of parameters
and another with simplified list of parameters, that allows the user to make their own customized parameter settings
(AP0 and AP5 in case of ERC211 and AP0 and AP6 in case of ERC213 / ERC214).
Pre-dened application table of ERC 211 controller
App Mode Description Temperature Defrost type Defrost end
App 0 Cooling/
Heating
No predefined application
App 1 Cooling Medium temperature without defrost (4 – 20 °C) None None
App 2 Cooling Medium temperature with timed natural defrost (2 – 6 °C) Natural Time
App 3 Cooling Medium temperature with natural defrost stop on
air temperature
(2 – 6 °C) Natural Air
temperature
App 4 Heating Heating Thermostat (20 – 60 °C) None None
App 5 Cooling/
Heating
No predefined application with simplified list of
parameter
Selection 1 covers applications where a standard cooling thermostat is needed and no defrosts are performed.
Selection 2 covers normal temperature applications with natural defrost with stop on time.
Selection 3 covers normal temperature applications with natural defrost with stop on air temperature.
Selection 4 covers applications where a simple heating thermostat is needed (no defrost).
Selection 5 covers applications where a reduced parameter list is recommended.
SairDI1
DO1
230 Vac
ERC 211 - APP 1/2/3
SairDI1
DO1
230 Vac
ERC 211 - APP 4

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
Pre-dened application table of ERC 213 controller
App Mode Description Temperature Defrost type Defrost end
App 0 Cooling/
Heating No predefined application
App 1 Cooling Medium temperature ventilated refrigeration units
with timed natural defrost (2 – 6 °C) Natural Time
App 2 Cooling Medium temperature ventilated refrigeration units
with timed electrical defrost (0 – 4 °C) Electrical Time
App 3 Cooling Low temperature ventilated refrigeration units with
timed electrical defrost (-26 – -20 °C) Electrical Time
App 4 Cooling Medium temperature ventilated refrigeration units
with electrical defrost (by temperature) (0 – 4 °C) Electrical Temperature
App 5 Cooling Low temperature ventilated refrigeration units with
electrical defrost (by temperature) (-26 – -20 °C) Electrical Temperature
App 6 Cooling/
Heating
No predefined application with simplified list of
parameters
Selection 1 covers normal temperature applications with natural defrost with stop on time.
Selection 2 and 3 covers respectively medium and low temperature applications with electrical defrost with stop on time.
Selection 4 and 5 covers respectively medium and low temperature applications with electrical defrost with stop on
defrost sensor “S5”.
Selection 6 covers applications where a reduced parameter list is recommended.
ERC 213 - APP 1
SairDI1
DO1
230 Vac
DO2 DO3
DI2
ERC 213 - APP 2-3
SairDI1
DO1
230 Vac
DO3DO2
DI2
ERC 213 - APP 4-5
SairDI1
DO1
230 Vac
DO3DO2
DI2 S5

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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
Predened application table for ERC 214
App Mode Description Temperature Defrost type Defrost end
App 0 Cooling/
Heating No predefined application
App 1 Cooling Medium temperature ventilated refrigeration units
with timed natural defrost (2 – 6 °C) Natural Time
App 2 Cooling Medium temperature ventilated refrigeration units
with timed electrical defrost (0 – 4 °C) Electrical Time
App 3 Cooling Low temperature ventilated refrigeration units with
timed electrical defrost (-26 – -20 °C) Electrical Time
App 4 Cooling Medium temperature ventilated refrigeration units
with electrical defrost (by temperature) (0 – 4 °C) Electrical Temperature
App 5 Cooling Low temperature ventilated refrigeration units with
electrical defrost (by temperature) (-26 – -20 °C) Electrical Temperature
App 6 Cooling/
Heating
No predefined application with simplified list of
parameters
Selection 1 covers normal temperature applications with natural defrost with stop on time.
Selection 2 and 3 covers respectively medium and low temperature applications with electrical defrost with stop on time.
Selection 4 and 5 covers respectively medium and low temperature applications with electrical defrost with stop on
defrost sensor “S5”.
Selection 6 covers applications where a reduced parameter list is recommended.
ERC 214 - APP 1
SairDI1
DO1
230 V AC
DO3 DO4
DI2
ERC 214 - APP 2-3
SairDI1
DO1
230 V AC
DO3DO2 DO4
DI2
ERC 214 - APP 4-5
SairDI1
DO1
230 V AC
DO3DO2 DO4
DI2 S5
2.5| Fan pulsating during compressor
OFF cycle
This is an energy saving feature. During compressor OFF cycle controller will run the fan with defined duty cycle to maintain
uniform temperature and delay the need of compressor switching ON

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2.6| Defrost on Demand
This feature records and averages the evaporator temperature recorded during the first three cut out of compressor
immediately after defrost. The controller will constantly follow the evaporator temperature and compare with the above
recorded average temperature. In between two defrosts, If the evaporator temperature goes below the previously recorded
average temperature by “defrost on demand” value “d30”, defrost will be triggered.
– This function can only be used in 1:1 systems.
– This function is disabled when the parameter “defrost on demand”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 sensor senses a temperature which is greater than 0 °C.
3| Technical Specification
FEATURES DESCRIPTION
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 4 inputs:
2 analogue, 1 analogue/digital and 1 digital
Allowed sensor types
NTC 5000 Ohm at 25 °C, (Beta value=3980 at 25/100 °C - e.g. EKS 211)
NTC 10000 Ohm at 25 °C, (Beta value=3435 at 25/85 °C - e.g. EKS 221)
PTC 990 Ohm at 25 °C, (e.g. EKS 111)
Pt1000, (e.g. 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
Output
DO1 Compressor relay:
16 A, 16 (16) A, EN 60730
10 FLA / 60 LRA at 230 V, UL60730
16 FLA / 72 LRA at 115 V, UL60730
DO2 Defrost relay:
8 A, 2 FLA / 12 LRA, UL60730
8 A, 2 (2 A), EN60730
DO3 Fan relay:
3 A, 2 FLA / 12 LRA, UL60730
3 A, 2 (2 A), EN60730
DO4 Alarm/Light relay:
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: IP00
Environmental Pollution degree II, non-condensing
Resistance to heat and re Category D (UL94-V0)
EMC category Category I
Approvals
UL recognition (US & Canada) (UL 60730)
ENEC (EN 60730)
CQC
CE (LVD & EMC Directive)
EAC (GHOST)
NSF
ROHS2.0
HACCP temperature monitoring in compliance with EN134785 Class I,
when used with AKS 12 sensor