Danfoss ERC 211 User manual

www.danfoss.com/erc

User manual | ERC 21X temperature controllers series

push buttons, a

big display and

an intuitive menu

structure ensure

superior ease of use.

ERC 21X, smart multipurpose

refrigeration controller

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

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.

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

DO1

Sair

DI1

DI2

DO2

DO3

DO1

Sair

DI1

DI2

DO4

DO2

DO3

DO1

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.

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

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

OFF

CUT-IN

CUT-OFF

min stop time

time

emperatur

Sc temperature °C

Block limit

Pre alarm limit

Pre alarm OK

Compressor

Pre alarm

Block alarm

T1 T2 T3 T4

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

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

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

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

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

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

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