Danfoss ERC 112 User guide

User Guide

Electronic Refrigeration Controller

ERC 112

This user guide is intended to be used by OEMs for the purpose of programming ERC 112. It may also be useful for technicians. However, it is not intended as a user guide for end users.

www.danfoss.com/erc

User Guide | ERC 112 Refrigeration Controller

Introduction

Application

Advantages

Approvals

Temperature control for refrigeration appliances. Front panel mounting.

The latest generation CPU, plenty of memory and high-end electronic components allow for a uniquely versatile software. Three separate password-protected user levels can be used to control more than 300 diﬀerent parameters to ﬁt all individual requirements.

R290/R600a end-use applications employing in accordance to EN/IEC 60335-2-24, annex CC and EN/IEC 60335-2-89, annex BB;

Glow wire according to EN/IEC 60335-1;

IEC/EN 60730

UL60730

NSF

CQC EAC Ukraine

Password protected

The access level can be set separately for each parameter using KoolProg KoolProg Software. There are three levels of access 1, 2, 3:

- level 1 is for shop access;

- level 2 for technicians;

- level 3 for OEMs. The access levels cannot be set using the buttons. Passwords for the diﬀerent levels can however be altered for the level of access you have, e.g. a level 2 user can change the password for level 1 and level 2 but not level 3.

2 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

Typical application

Glass Door Merchandiser No-frost freezer/sub-zero cooler

S3, S4 are optional

Gastro No-frost freezer/Cooler

S2, S3, S4 are optional

S3, S4 are optional

S2, S3, S4 are optional

User Guide | ERC 112 Refrigeration Controller

Product overview

Display

Buttons

/ /

Clips Are used to secure the controller in place in the

Front frame The front frame provides a proper ﬁnish but can

The ERC 112 is an electronic refrigeration controller with an LED display especially developed for bottle coolers and commercial fridges and freezers. It is particularly suited for OEM customers where time, easy and reliable installation and high quality need to go hand in hand with ﬂexibility. The display can be ordered in red or blue. The controller is available with the upper left button as "ECO" or "Defrost ". The lower left-button can be supplied with "Light", "Stand by" or "Super chill".

case of rear mounting. They are not used with front mounting. There are two identical clips, one placed on either side of the controller.

also be used to secure the controller in place when using front mounting. In this case, clamps are not required. Contact Danfoss for details.

"S1"

Temperature sensor for cabinet

"S2"

Temperature sensor for defrost

"S3"

Temperature sensor for condenser, light sensor or Motion sensor

"S4"

Temperature sensor Pt 1000 ohm/0°C or door signal

"di"

Door signal or Motion sensor

Controlle r without front fr ame Front frame

Control temperature sensor

There are diﬀerent lengths.

Defrost temperature sensor

Should be mounted on the evaporator.

Condenser temperature sensor

Should be mounted on the condenser.

Light sensor

Is optional and is used to measure the level of ambient light around the cabinet so that night and day "Economy", "Normal" modes of operation can automatically be set, as well as the brightness of the display.

Motion sensor

Should be mounted on the cabinet front.

Door sensor connector cable

Is optional and is a connector and cable with

spade terminals compatible with door contacts used in refrigeration applications.

The function of an input can be reprogrammed, but the connector can not be moved. The connector is designed to only one location. "S1" to "S1", " S2" to "S2", etc.

4 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

Quick programming

Software for PC

USB gateway

USB programming key

KoolProg

Software from Danfoss for programming the ERC-controller via a PC rather than with the front panel buttons.

https://www.danfoss.com/en/service-andsupport/downloads/dcs/koolprog/

USB gateway

The USB Gateway is a laboratory tool, oﬀering fast and easy programming of any ERC controller connected directly to the PC. "KoolProg Software" installation kit is provided for the PC. The gateway is standard inventory for OEM labs.

Programming an individual unit in a laboratory

The USB key requires "KoolProg Software" running on a PC. It enables parameters to be set in real time and an array of status information to be read (bidirectional connection). Once the desired settings have been determined, a speciﬁc parameter ﬁle is saved to the USB key for later mass programming through the docking station.

Docking station

Mass programming on an assembly line:

The docking station is used for high volume programming of ERC controllers, for example on an assembly line. The docking station is a write-only device. The USB key, is to be inserted into the docking station. The settings are then loaded into each successive controller in a matter of seconds. "KoolProg Software" is not required for mass programming.

User Guide | ERC 112 Refrigeration Controller

Technical specs

Power Supp ly 100 - 240 V AC Switch mode power supply. Average 0.7 W

Purpose of control To control commercial Refrigeration Applications

Construction of Control Electronic control for incorporation for use in Class I and Class II appliance

Automatic Action Micro- disconnection on operation type 1.B

5 inputs: 4 analogue (digital), 1 digital; user specific assignment; Optional: External button input

Input

Output

Probes

Connectors

Programming Programming with Danfoss KoolProg PC soft ware, Docking station and Programming key

Assembly Front mounting; Brackets

Display LED display, 3 digit, decimal point and multi functionality icons; °C/ °F scale

Keypad 4 buttons (integrated IP65 design), 2 left, 2 right; user programmable

Operating Conditions 0 °C to 55 °C, 93% rH

Storage Conditions -40 °C to 85 °C, 93% rH

Range of Measurement -40 °C to 85 °C with standard sensors (-40 °C to 200 °C when using NTC 100K sensors)

Protection

Environmental Pollution degree II, non-condensing

Resistance to heat & fire Categor y D (UL94-V0)

EMC category Category I

Over Voltage Category Categor y II (IEC 60664-1)

Temperature for Ball Pressure Tes t

For SELV Circuits Input Probes or Digital Input connected to SELV limited energy >15W

Operating Cycles Compressor relay: more than 175,000 at full load (16A (16A))

Approvals

• Cabinet air/Evaporator/Condenser • Door sensor: all types, user specific

• Light sensor: Danfoss ECO light sensor • Motion sensor

UL60730 EN60730

"DO1" (Compressor relay)

"DO4" 8 A resistive, FL A2/LRA12, TV-1 8 A resistive, 2(2) A

"DO5" F LA2/L RA12 , TV-1 8 A resistive, 2(2) A

"DO6" FLA 2/ LRA12, TV -1 8 A resistive, 2(2) A

Danfoss NTC sensors and Danfoss ECO accessories (Light, Motion and Door sensors) Danfoss Pt 100 0 ohm/0°C

Modular connector system for OEM customers, with optional output screw terminal adapter; Input connector type: Rast2 5 Edge connectors; output connector t ype: RAST 5 standard

Front: IP65 Rear: wate r and dust protectio n corresponds to IP31, accessibilit y of connectors limit rear part rating to IP0 0

According to EN 60730-1, Annex G

R290/R600a end-use applications employing in accordance to EN/IEC 60335-2-24, annex CC and EN/IEC 60335-2-89, annex BB Glow wire according to EN/IEC 60335-1 IEC/EN 60730 UL60730 NSF CQC EAC Ukraine

120 V AC: 16 A resistive/FLA16/LRA72 240 V AC: 10 A resistive/FLA10/LRA60

These approvals are only valid when used with recommended Danfoss accessories.

16(16) A

Max 10 A total "DO4-6"

IMPORTANT NOTE

The inputs are not galvanic isolated and are connected directly to the mains supply! For that reason, door-switches, sensors as well as the cables must fulﬁl the reinforced insulation requirements.

Dimensions

28 mm

78,25 mm

71 mm

28,5 mm

Front mounting

(Lock with frame)

36,5 mm

78,25 mm

82,25 mm

71 mm

30 mm

Rear mounting

(Lock with clips)

6 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

80G31

Connections

(Inputs and outputs are conﬁgurable)

Danfoss

Note S4 Port can also be used to connect other sensors and Door sensor.

User Guide | ERC 112 Refrigeration Controller

Code numbers

Type

ERC 112C GDM - Red 27 080G3202

ERC 112D GDM - Red 27 080G3203

ERC 112C GDM - Blue 27 080G3206

ERC 112D GDM - Blue 27 080G3207

ERC 112C GDM - Red, STM32 27 080G3489

ERC 112D GDM - Red, STM32 27 080G3490

ERC 112C GDM - Blue, STM32 27 080G3491

ERC 112D GDM - Blue, STM32 27 080G3492

ERC 112C CFF - Red, Buzzer 27 080G3212

ERC 112D CFF - Red, Buzzer 27 080G3213

ERC 112C CFF - Blue, Buzzer 27 080G3216

ERC 112D CFF - Blue, Buzzer 27 080G3217

ERC 112C CFF - Red, Buzzer, STM32 27 080G3493

ERC112D CFF- Red, Buzzer, STM32 27 080G3498

ERC 112C CFF- Blue, Buzzer, STM32 27 080G3494

ERC112D CFF- Blue, Buzzer, STM32 27 080G3499

ERC 112C CFF- Blue, Buzzer 27 080G3233

ERC 112D CFF- Blue, Buzzer, 27 080G3413

ERC 112C CFF- Blue, Buzzer, STM32 27 080G3496

Temperature sensors

-40 – 85 °C, PVC Standard, NTC 5 K

S1, 470 mm, 3-pole

S1, 1000 mm, 3-pole

S1, 1500 mm, 3-pole

S1, 2000 mm, 3-pole

S1, 2200 mm, 3-pole

S1, 3000 mm, 3-pole

S1, 3500 mm, 3-pole

S1, 6000 mm, 3-pole

-40 – 120 °C, TPE precision NTC 5 K, Santroprene

S1, 1500 mm, 3-pole

-20 – 175 °C, Silicone rubber cable, NTC 100 K

S1/S3, 2000 mm, 3-pole 108 080G2043

I-Pack

Qty. Code no.

120

077F8751

120

077F8757

120

077F8761

120

077F8765

120

077F8767

077F8769

077F8723

080G2019

120

077F8726

Type

-40 – 85 °C, PVC Standard, NTC 5 K

S2, 1000 mm, 2-pole

S2, 1500 mm, 2-pole

S2, 2000 mm, 2-pole

S2, 3000 mm, 2-pole

S2, 6000 mm, 2-pole

S3, 1000 mm, 3-pole 120 077F8756

S3, 1500 mm, 3-pole 120 077F8760

S3, 2200 mm, 3-pole 120 077F8766

S3, 3000 mm, 3-pole 60 077F8768

-100 – 200 °C, Pt 1000

S4, 1000 mm, 3-pole 108 080G3350

Light-sensors

S3, 3000 mm, 3-pole 108 080G3315

Magnetic door sensor

di/S4, 2000 mm, 3-pole 81 080G3322

di/S4, 3000 mm, 3-pole 81 080G3324

Cable door sensor

di/S4, 1000 mm, 3-pole 108 080G3340

di/S4, 2000 mm, 3-pole 108 080G3341

di/S4, 3000 mm, 3-pole 108 080G3342

di/S4, 4000 mm, 3-pole 81 080G3343

Motion sensor

S3/di, 3000 mm, 3-pole 27 080G3392

Clips

Black (2 needed per controller) 54 080G3308

Programming

Docking station for OEM mass production

EKA 183a programming key 1 080G9740

Gateway incl USB Cable for R&D 1 080G9711

Power plug *

6-pole with screw 54 080G3357

* The connectors are rated for 28 Amps max.

I-Pack

Qty. Code no.

120

077F8786

120

077F8790

120

077F8794

077F8798

080G2029

1 080G9701

Note: For more information about temperature sensor

types and connectors, please refer to Danfoss’ technical brochure "NTC type temperature sensors for ETC & ERC

controllers".

Sx (di)= connector position. Inputs are conﬁgurable.

8 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

Operation

Programming Tools

Manual operation with buttons (Direct Access)

Examples

The controller can be conﬁgured in four ways: Using:

• KoolProg and KoolKey as Gateway

• KoolKey as Copy key

• KoolKey with Docking station

• Buttons on the front panel of the controller.

1 Press: variable direct function, e.g. “ECO”/”Night mode”

Sub function: back

1 Press: variable direct

function, e.g. light Sub function: “OK”

Changing the Desired Temperature Set point:

1. The display shows the current temperature.

2. Press "up/down" to access set point.

3. Press "up/down" to adjust set point. After 30 seconds, the display automatically reverts to showing the current temperature

Turning ON/OFF the ECO Function:

1. Press "ECO". The green "ECO" symbol is lit when in "ECO" mode.

Turn ON/Oﬀ the Light:

1. Press the "Light" button.

Acknowledging Alarms:

1. Display Flashing the alarm message.

2. Press any button to acknowledge.

Password protection:

1. Press "^" and "v" together and hold 5 seconds

to access the menu.

2. The display shows "PAS" (only if conﬁgured for

password protection).

3. Press "OK".

4. Press "^" / "v" to the code.

5. Press "OK". Password protection on three levels:

1. Level 1: "shop" (daily use by shop personnel).

2. Level 2: "ser" (service technician).

3. Level 3: "OEM" (OEM programming).

All these tools are supplied separately. For technical literature and further information, please contact your local Danfoss representative.

1 Press: temperature set point

Sub function: “up”

1 Press: temperature set point

Sub function: “down”

Changing a Parameter

Some parameters may be hidden to you. Your access level will determine which parameters you can view and edit:

1. Press "^" and "v" together and hold 5 seconds to access the menu.

2. First parameter group is shown "tHE".

3. Press "^" and "v" to ﬁnd the desired group.

4. Press "OK".

5. First parameter is shown.

6. Press "^" and "v" to ﬁnd the desired parameter.

7. Press "OK".

8. Press "^" and "v" to ﬁnd the desired setting.

9. Press "OK".

After 30 seconds, the display automatically reverts to showing the current temperature. Or Press 2 x "Back".

NOTE: Incorrect parameter settings can lead to inadequate cooling, excessive energy consumption, unnecessary alarms and in the case of temperature-sensitive food storage, breaches in food hygiene principles and regulations. Only a trained operator should make changes to parameters.

User Guide | ERC 112 Refrigeration Controller

Menu/functions

ERC menu code Description

"tHE Thermostat settings

"SEt"

Min. -100.0°C Max. 200.0°C Default 2.0°C

"SPr"

Min. 0.0 Max. 1.0 Default 0.5

"diF"

Min. 0.0 K Max. 20.0 K Default 2.0 K

"HSE"

Min. -100.0°C Max. 200.0°C Default 50.0°C

"LSE"

Min. -100.0°C Max. 200°C Default -35.0°C

"iCi"

Min. no Max. yes Default no

"SP2"

Min. -25 K Max. 25 K Default 0

"dF2"

Min. 0 K Max. 20 K Default 2

FAn Fan settings

"FCt"

Default FAo

"Fod"

Min. 0 s Max. 240 s Default 0 s

"FSd"

Min. 0 s Max. 240 s Default 0 s

"FoC"

Min. 0 s Max. 960 s Default 0 s

"FSC"

Min. 0 s Max. 960 s Default 0 s

Set point

This parameter deﬁnes the desired temperature (set point). In standard operation the set point is changed by simply pressing the "temperature up/down" buttons on ERC 112; for laboratory and assembly line you may opt for software controlled set point adjustment (speed improvement)

Current set point adjustment value diF * SPr

The default value is set to 0.5 and the parameter is hidden by default. "Spr" deﬁnes the position of the set point in relation to cut-in and cut-out. "Spr=0,5" sets the set point mid between cut-in and cut-out. "Spr=0" sets the set point at the cutout. "Spr=1" sets the set point at cut-in.

Thermostat diﬀerential

This deﬁnes the diﬀerence between the cut-out and the cut-in. The desired temperature is determined by "SPr" and "diF".

Upper limit of thermostat set point

Deﬁne the temperature range limit of the controller. Once set, the desired temperatue (set point) can not go above "HSE" or below "LSE".

Lower limit of thermostat set point

Deﬁne the temperature range limit of the controller. Once set, the desired temperatue (set point) can not go below "LSE".

Initial cut in

Comp relay action when Tair is between cut-in and cut-out at power-up: "yES": cut in the compressor. "no": cut out the compressor.

Seasonal oﬀset temperature (This parameter is only available from Product version PV03 onwards. Please check product label for Product version of your controller.) Oﬀset value for set point and alarms when the seasonal oﬀset button is activated. It is an additional oﬀset mode to have separate set points during summer and winter season, which can be activated by long press button after conﬁguring in assignments as "tEc".

Seasonal diﬀerential

Temperature diﬀerential during seasonal oﬀset mode. Only applicable during normal operation. During ECO mode, the controller will be worked to the ECO Diﬀerential setting. See ECO management section for more details.

Fan control method

"FAo": fan always on "SEt": fan follow compressor by manual settings. (FoC and FSC needs to be set accordingly) "Aut": automatical fan control

Fan ON Delay/Fod

Fod deﬁnes the fan delay (in seconds) after a compressor cut-in.

Fan Stop Delay/FSd

"FSd" deﬁnes the fan delay after a compressor cut-out.

If both "Fod" and "FSd" are set to zero then the fan runs whenever the compressor runs.

Fan ON Cycle/FoC Fan Stop Cycle/FSC

When the compressor is OFF, and "FoC" or "FSC" are not zero, the fan runs in cycles according to "FoC" and "FSC".

Example: "FoC=120" [sec] and "FSC=120" [sec] means that the fan runs for half the time when the compressor is OFF. When the compressor is on, the fan is always ON (according to "FAo" and "Fod").

10 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

"FSt"

Min. 0 s Max. 960 s Default 10 s

"FdC"

Min. -10.0 K Max. 10.0 K Default 0.0 K

"Fdt"

Min. 0 s Max. 999 s Default 0 s

Fan Minimum Stop time

Minimum stop time for fan protection.

Fan Δt cut in (This parameter is only applicable with Automatic fan control "Aut" mode.) Delta T for fan to cut in which the temperature oﬀset comparing with thermostat cut in temperature.

Fan stop time on door open

The delay with wich the fan will be stopped after the door has been opened. "0": fan stop immediately when door open. "1-998": delay for fan stop after door open. "999": fan keep running all the time during door open.

"FLt"

Min. 0°C Max. 50 °C Default 50

Fan limit temperature

This function prevents the evaporator fan to operate if the temperature is above the fan limit temperature. If the defrost sensor registers a higher temperature than the one set here, the fan will be stopped to avoid the warm air circulation in the cabinet. This parameter is active only when evaporator sensor is connected.

"FdF"

Min. 1 K Max. 10 K Default 2

Fan limit Delta temperature

This is the evaporator delta temperature for the fan to switch ON after it is switched oﬀ due to FLt setting.

Lig Light settings

"CLC "

Min. on Max. dor Default on

Cabinet Light Control

This parameter can be set to one of these alternatives to control the light in the cabinet: "on": always ON. "oFF": always OFF. "dor": door sensor only.

"Lod"

Min. 0 s Max. 300 s Default 0 s

Light OFF delay

Number of seconds the light will stay ON after the door has been closed.

Pud Pull Down settings

Pull down (sometimes known as Super Cool) is a procedure for improving cooling performance, accelerating the time used to reach the desired temperature. Pull down settings overrule all other settings.

"Pit"

Min. -40.0°C Max. 50.0°C Default 50.0°C

Pull Down Initiate Temperature

This parameter indicates the temperature which causes a pull down to start. If the temperature measured inside the cabinet exceeds this value for longer than one hour, then pull down will start. The compressor will have already cut-in, so the only eﬀect is to stop defrost cycles until the desired temperature is reached. The period of one hour is ﬁxed and cannot be altered.

"PCy"

Min. 0 min Max. 360 min Default 30 min

Pull Down Cycling

This is the duration in minutes of the compressor cycling at the reduced set point temperature. Once the desired pull down limit temperature "PLt" has been reached during pull down, the compressor will continue to cycle ON/OFF for the duration of "PCy". At the end of the period deﬁned by "PCy", the set point temperature will return to normal and pull down will cease.

"Pdi"

Min. 0 hour Max. 48 hour Default 15 hour

"Pdd"

Min. 0 hour Max. 48 hour Default 24 hour

Pull Down Defrost Interval

This is the time between defrost cycles during pull down. It is measured in hours and can be up to 48 hours. During pull down, this setting overrides the defrost interval and defrost time settings (see the defrost section).

Pull Down Duration

Maximum time for pull down. If time expires pull down will stop, regardless of temperature.

User Guide | ERC 112 Refrigeration Controller

"PLt"

Min. -55.0°C Max. 55.0°C Default 0.0°C

Pull Down Limit Temperature

This parameter sets the minimum allowed temperature during pull-down. In order to protect valuable contents you must always specify the absolute minimum temperature allowed in your application. For glass door merchandisers 0°C/32°F protects bottles from freezing; for commercial fridges you may opt for a slightly higher temperature (e.g. 2°C)

"Prt"

Min. 0.0 K Max. 10.0 K Default 0.1 K

Pull Down Reduction Temperature Δt

The controller calculates a lower set point during pull down mode to increase the cooling capacity of your appliance. For each hour the cabinet temperature is above the pull down initiate temperature, the set point is reduced with the value of "Prt".

dEF Defrost settings

"dFt"

Default no

Defrost Type

"no": defrost function is disabled. "EL": electrical defrost. "Hgd": hot gas defrost (contact Danfoss for details). "nat": OFF-cycle defrost (natural defrost).

"Add"

Min. no Max. yes Default no

"dtt"

Min. 0.0°C Max. 25.0°C Default 6.0°C

"drt"

Min. 0.0°C Max. 200.0°C Default 5.0°C

"dii"

Min. 1 hour Max. 96 hour Default 6 hour

Adaptive defrost

"no": defrost controlled by time. "yES": automatic defrost control activated.

Terminate Temperature

This parameter deﬁnes at what temperature the defrost cycle will stop. The temperature is given by the evaporator sensor or by the cabinet temperature sensor if no evaporator sensor is used.

Defrost reset temperature

The defrost counter is saved and restored at power-up, but if the temperature sensor, used for defrost, is higher than this value at power-up, it is assumed that the evaporator is free of ice and the defrost counter will be cleared.

Defrost minimum Interval/dii

Deﬁnes the minimum time period between the start of two defrost cycles. This parameter is applicable only in Adaptive defrost mode. Once the minimum interval has expired, controller will monitor the evaporator temperature and it will start the defrost if evaporator temperature goes below "dEt" or "ddt" value. If not, it will trigger the defrost once the maximum interval "dAi" has been reached. In case of time based defrost it always trigger the defrost at Maximum interval"dAi".

"dAi"

Min. 1 hour Max. 96 hour Default 7 hour

"dit"

Min. 0 min Max. 240 min Default 5 min

Maximum Interval

Deﬁnes the maximum time period between the start of two defrost cycles.

Minimum Time

Deﬁnes the minimum duration of a defrost cycle. During this period, the controller will not check the temperature. Once the minimum time has expired, the temperature will be checked and if the terminate temperature "dtt" has been reached, the defrost cycle will end. If dtt has not been reached, defrost will continue until either dtt is reached or the maximum time "dAt" reached, whichever occurs ﬁrst.

"dAt"

Min. 0 min Max. 480 min Default 30 min

"dot"

Min. 0 min Max. 60 min Default 0 min

"Fdd"

Min. 0 s Max. 600 s Default 0 s

"Ftd"

Min. -25.0°C Max. 25.0°C Default 25.0°C

Maximum Time

Deﬁnes the maximum duration of a defrost cycle. The controller will not allow a maximum time to be entered which is less than the minimum time, or a minimum time which is more than the maximum time.

Drip OFF Time

This parameter can be set to between 0 and 60 minutes and deﬁnes how long the delay is between the heater being switched OFF and the compressor starting again.

Fan Delay after Defrost

Deﬁnes how long the delay is between the start of the compressor after defrost and the fan starting again.

Fan Start Temperature

This only applies if an evaporator temperature sensor is ﬁtted. This parameter determines at what evaporator temperature the fan will start after a defrost cycle is complete. If the time set in "Fdd" occurs before the temperature set in "Ftd", the fan will start in line with "Fdd". If the temperature set in "Ftd" occurs ﬁrst, then the fan will start in line with "Ftd". It is therefore a case of whichever parameter’s setting is reached ﬁrst which determines when the fan starts.

12 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

"dFA "

Min. no Max. yes Default no

"dCt"

Min. no Max. yes Default no

"doC"

Min. 0 hour Max. 24 hour Default 0 hour

"dEt"

Min. -50.0°C Max. 0.0°C Default -50.0°C

"ddt"

Min. 0.0 K Max. 30.0 K Default 5.0 K

"idi"

Min. 0 hour Max. 96 hour Default 3 hour

Defrost Fan On

Set to "yES", the fan will constantly run during defrost cycles. Set to "no", the fan will not run during defrost cycles.

Defrost by accumulated compressor run time

If Yes: Defrost time based on actual accumulated compressor ON time"doC" If NO: Defrost Times based on elapsed time.

Defrost by continuous compressor ON time

Continuous compressor running can cause defrost. "0" = deactived

Defrost start evaporator temp

Defrost will get triggered at this temperature after expiry of minimum defrost interval "dii" (adaptive defrost only).

Defrost Δt

Defrost Δt compare with evaporator temperature of ﬁrst cut out after defrost to trigger defrost start. The defrost start if evaporator temperature has decreased more the "ddt"

Initial Defrost Interval

The initial defrost interval determines the time for ﬁrst defrost after power-up. The initial defrost is mainly intended for factory testing of the defrost functionality and can be set to expire after a number compressor cycles according to the setting of parameter idd. During normal operation, the defrost counter will be saved in memory and restored after power loss, making the initial defrost unnecessary.

"idd"

Min. 0 Max. 999 Default 100

Initial Defrost Duration

The initial defrost duration is the number of compressor cycles before the initial defrost is deactivated. "0": "idi" No initial defrost. "1-998": number of compressor cycles before deactivation. "999": initial defrost always active.

CoP Compressor settings

"uPt"

Voltage protection

"no": no voltage protection.

Min. no Max. yes Default no

"uLi"

Min. 0 V AC Max. 270 V AC Default 0 V

"uLo"

Min. 0 V AC Max. 270 V AC Default 0 V

"uHi"

Min. 0 V AC Max. 270 V AC Default 270 V

"yES": voltage protection activated based on voltage related settings.

Minimum cut-in voltage/uLi. Minimum cut-out voltage/uLo. Maximum voltage/uHi

These three parameters provide voltage protection to the compressor. Start by setting "uHi", followed by "uLo" and "uLi". "uLi": when the compressor is due to start, the voltage of the power

supply will be checked and the compressor will only be allowed to start if it is at least the value given in this parameter.

"uLo": when the compressor is running, it will be switched

OFF if the voltage goes below that given in this parameter.

"uHi": when the compressor is running, it will be switched

OFF if the voltage exceeds that given in this parameter. If the compressor is already stopped, it will remain switched OFF.

"EHd"

Default no

"Ert"

Min. 0 min Max. 60 min Default 0 min

Sensor Error Type

"no": no sensor error handling. "SEt": in case of control sensor error, follow error run/stop time.

Error Run Time

The parameter only become active in the unlikely event of a broken temperature sensor. It is used to run the application in safety mode. At the same time the sensor error will be shown in the display. "Ert" deﬁne the duration the compressor will run. Example: "Ert=4" [min] and "ESt=16" [min] will provide an average cooling system activity of 20%. Ert and "ESt" values are based on OEM experience and are by default inactive.

User Guide | ERC 112 Refrigeration Controller

"ESt"

Min. 0 min Max. 60 min Default 1 min

Error Stop Time

"CSt"

Min. 0 min Max. 30 min Default 2 min

Minimum Stop Time

It determines the minimum number of minutes the compressor must remain idle before a Temperature cut-in can take eﬀect. For example, if the temperature sensor indicates that the cut-in temperature has been reached, but the number of minutes set in this parameter have not elapsed since the compressor last stopped, then the compressor will stay OFF. It will only start once the duration given by "CSt" has been reached provided the temperature is still high enough. "CSt" thus overrides the cut-in.

"Crt"

Min. 0 min Max. 30 min Default 0 min

Minimum Run Time

It determines the minimum number of minutes the compressor must run before a Temperature cut-out can take eﬀect. For example, if the temperature sensor indicated that the cut-out temperature has been reached, but the number of minutes set in this parameter have not elapsed since the compressor last started, then the compressor will continue. It will only stop once the duration given by "Crt" has been reached – provided the temperature is still low enough. "Crt" thus overrides the cut-out.

"Cot"

Min. 0 min Max. 480 min Default 0 min

Maximum OFF Time

This is the maximum time in minutes the compressor is allowed to "idle" – up to 480 minutes. Cot is set to zero by default (inactive). If the controller is used on a draft beer (ice bank) application, this parameter can be used to control the ice thickness.

"Cdd"

Min. 0 min Max. 15 min Default 0 min

"Srt"

Min. 0 min Max. 60 min Default 0 min

"Pod"

Min. 0 s Max. 300 s Default 300 s

"Pot"

Min. -100.0°C Max. 200.0°C Default -100.0°C

Compressor Door Open Delay/Cdd

This parameter sets the delay in minutes before the compressor stops when the door is opened. If set to zero, the function is disabled.

System resume after door open

Fan and Compressor resume after cut out by door open.

Power ON Delay

This is the delay in seconds between power-on and the compressor being activated. Depends on the power ON temperature setting as explained below.

Power ON Temperature

This parameter is used to accelerate the ﬁrst application test on the OEM assembly line; if the cabinet temperature is higher than this parameter the power ON Delay is overruled and the outputs are activated without delay.

Con Condenser Protection settings

NOTE: A condensor temperature sensor is required to use these parameters. Condenser protection is generally used in dusty environments where the condenser may accumulate a layer of dust or dirt and therefore be at risk of overheating.

"CAL"

Min. 0°C Max. 200°C Default 80°C

Condenser Alarm Limit/CAL

This parameter sets the temperature for the condenser at which an alarm will be generated.

"CbL"

Min. 0°C Max. 200°C Default 85°C

"CoL"

Min. 0°C Max. 200°C Default 60°C

Condenser Block Limit/CbL

This parameter sets the temperature which if reached will cause the compressor to switch OFF.

Condenser OK Limit/CoL

This parameter sets the temperature at which the compressor is allowed to start again after the temperature set in "CbL" above has been exceeded and the compressor stopped.

14 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

"CLL"

Min. -100°C Max. 20°C Default -5°C

Condenser Low Limit/CLL

This parameter sets the lowest (condenser) temperature at which the compressor is allowed to start.

diS Display settings

NOTE: some display parameters can be set in such as way that they may be illegal in some jurisdictions. Please check local legislation.

"diC"

Min. no Max. yes Default no

"din"

Min. 2 Max. 10 Default 10

Display intensity auto control

"no": display intensity use ﬁxed value.

Display Intensity

The controller can have its display intensity (brightness) set in one of two ways: A) With a Danfoss ambient light sensor attached, the brightness of the

display is adjusted automatically according to the ambient light level (see the assignments section).

B) When no ambient light sensor is attached, the display intensity can

be set to a ﬁxed intensity. Both options are on a scale of 1 to 10, where 10 is the brightest.

"CFu"

Min. °C Max. °F Default °C

"trS"

Default SCo

Display Unit

This parameter sets the display to Fahrenheit or Celsius. Switching from one to the other will cause all temperature settings to be automatically updated accordingly.

Temp sensor to display

"SCo": temperature control. "EuA": evaporator temperture. "Con": condenser temperature (condenser cleaning). "AuS": only for showing on display.

"rES"

Min. 0.1 Max. 1 Default 0.1

Display Resolution

This parameter can be set to 0.1, 0.5 or 1 and aﬀects the way the temperature is displayed. With the parameter set to 1, the display will only ever show temperatures rounded to the nearest whole degree. At 0.5, it will round the temperature to the nearest half degree for display. For example, 3.3 degrees will be shown in the display as 3.5 degrees and 3.9 as 4.0. With the parameter set to 0.1, no rounding occurs. This parameter does not aﬀect the temperature itself, merely the display.

"rLt"

Min. no Max. yes Default no

Display Range Limit

In some point of sales applications you may want to show the desired instead of the real temperature. This parameter sets whether the displayed temperature is the actual temperature or whether it is restricted to the cut-in / cut-out limits. Set to "nO" means that the actual temperature will de displayed. The parameter is set to "nO" by default.

"ddL"

Min. 0 min. Max. 10 min Default 0 min

Display Delay

In order to provide a realistic temperature appearance for an application, a display delay can be set. The parameter sets the time constant τ (tau) of the moving average ﬁlter for the display. Physically, one time constant represents the time it takes the system’s step-response to reach 66% of its ﬁnal value and ﬁve time-constants the time it takes to reach 99% of its ﬁnal value.

"doF"

Min. -10.0 K Max. 10.0 K Default 0.0 K

Display Oﬀset

This parameter is a relative value and allows the temperature displayed to be diﬀerent to the temperature measured. For instance, at a measured temperature of 7°C and "doF" set to -2K, the displayed temperature will be 5°C instead.

"dLt"

Min. 0 min Max. 60 min Default 15 min

Lock Time After Defrost

In order not to show a rising temperature during defrosting, the displayed temperature is locked at the temperature shown at the start of the defrost cycle for the number of minutes set in this parameter. "0": no lock.

User Guide | ERC 112 Refrigeration Controller

"SEC"

Min. no Max. yes Default no

"SSC"

Min. no Max. yes Default no

"SHo"

Min. no Max. yes Default no

"SdF"

Min. no Max. yes Default yes

"SCS"

Min. no Max. yes Default yes

"SFS"

Min. no Max. yes Default yes

"SdS"

Min. no Max. yes Default yes

"SES"

Min. no Max. yes Default yes

"Ld"

Min. -100.0°C Max. 20 0.0°C Default -100

Show Economy State

If set to "yES", this parameter causes the display to show ECO when the system is in ECO mode. If set to "nO", the temperature continues to be displayed.

Show Pull down state

If set to "yES", this parameter causes the display to show SC when the system is in pull down mode. If set to "nO", the temperature continues to be displayed.

Show Holiday

"no": display will show temperature or ECO mode during holiday mode. "yES": display will show "HoL" during holiday mode.

Show Defrost

If set to "yES", this parameter causes the display to show DEF when the system is in defrost mode. If set to "nO", the temperature continues to be displayed.

Show compressor symbol

"no": compressor symbol will not show on display. "yES": show compressor symbol on display.

Show Fan symbol

"no": san symbol will not show on display. "yES": show fan symbol on display.

Show Defrost symbol

"no": defrost symbol will not show on display. "yES": show defrost symbol on display.

Show ECO symbol

"no": ECO symbol will not show on display. "yES": show ECO symbol on display.

Minimum Display value

If the probe value is less than minimum display value mentioned in this parameter, it doesn't show the actual value and instead show this minimum only until the probe starts reading a higher value than minimum display value set here.

"Hd"

Min. -100.0°C Max. 20 0.0°C Default 200

Maximum display value

• Controller will display actual temperature, if the probe value is between Maximum display value and Signaling threshold value and the trend of the probe is increasing (trend is based on past 10 readings)

• Controller will display Error “Err”, if the probe value is more than Signaling threshold value and the trend of the probe is increasing (based on the past 10 readings)

• Controller will display “---“if the probe value is more than signaling threshold and trend of the probe is decreasing (based on the past 10 readings)

• Controller will display “---“if the probe value is bigger than Max display value and the trend of the probe is decreasing (based on the past 10 readings)

"St"

Min. -100.0°C Max. 20 0.0°C Default 200

Signalling threshold value

Temperature limit for Maximum display visualization

ALA Alarm settings

"HAt"

Min. -100.0°C Max. 200°C Default 15.0°C

"LAt"

Min. -100.0°C Max. 200°C Default -50.0°C

High Temp Alarm

Absolute value. By setting "HAt" to the maximum alarms will be deactivated.

Low Temp Alarm

Absolute value. By setting "LAt" to the minimum value, alarms will be deactivated. In most situations, the low alarm delay will be set to 0 to warn about too low a temperature immediately.

16 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

"Htd"

Min. 0 min Max. 240 min Default 30 min

"Ltd"

Min. 0 min Max. 240 min Default 0 min

"Pdd"

Min. 0 min Max. 960 min Default 240 min

"dod"

Min. 0 min Max. 60 min Default 2 min

"uAL"

Min. no Max. yes Default no

"LEA"

Min. 0 hour Max. 96 hour Default 0 hour

"Abd"

Min. 0 min Max. 999 min Default 0 min

"ACA"

Min. no Max. yes Default yes

Alarm delay on high temperature alarm

The number of minutes to wait before sounding an alarm once the high temperature alarm temperature is reached.

Alarm delay on low temperature alarm

The number of minutes to wait before sounding an alarm once the low temperature alarm temperature is reached.

Pull down delay

Normally, it is not necessary or desirable to sound an alarm during a pull down (the initial phase of reaching the desired temperature). This parameter prevents the high temperature alarm "HAt" sounding during pull down and after a defrost for the number of minutes set for the parameter. NOTE: it does not apply to the low temperature alarm "LAt".

Door Open delay

It is possible to indicate to customers that a door has accidentally been left open. This parameter sets the delay in minutes before the alarm sounds. This is useful in environments where customers/users may hold the door open while making their selection. If the door is closed again before the set number of minutes is reached, the alarm does not sound. NOTE: a door sensor is required if this parameter is to be activated.

Voltage alarm

"no": no voltage alarm. "yES": voltage alarm activated.

Leakage alarm

Leakage detection for compressor protection. If compressor operates for more than the set time, an alarm will be triggered. "0": disable

Alarm Buzzer Duration

The alarm sounds for 10 seconds, followed by silence for 50 seconds. One alarm sequence therefore lasts 60 seconds. These values cannot be changed. This parameter determines how long in minutes an audible alarm will continue while there is still a reason to have an alarm. If set to 999, the alarm will continue to sound until the reason for the alarm is cleared – for example the temperature has dropped enough or the door closed. In some cases, it may be necessary for a user or technician to take action in order to clear the alarm. If set to 0, the alarm will never sound.

Auto Clear of Alarm/Error/ACA

If this parameter is set to "nO": The alarm status will not disappear automatically even if the condition which caused the alarm is no longer valid or present. If set to "yES": As soon as the condition which caused the alarm is no longer valid or present, the alarm status will automatically change back to inactive. There will be no trace of the alarm having occurred. In general, glass door merchandise applications will be set to "yES" and commercial fridges and freezers set to "nO". For example, if the temperature goes too high for a period there may be food safety considerations in a freezer containing food but not in a fridge with cold drinks.

AHC Automatic Heater settings

Automatic Heater Control applies reverse cooling mode (heating) to your refrigeration appliance where the ambient temperature can go below the set point. A) It will use the Defrost output to control the heating

function when needed. Defrost operations will operate as normal.

B) Automatic heater will only operate when using Electric

Defrost. It is disabled with Natural Defrost or Hot Gas Defrost.

"AuH"

Min. no Max. yes Default no

Automatic Heater Mode Enable

This setting is normally set to "no". When set to "yES", parameters "End", "AHS" and "AHD" apply.

User Guide | ERC 112 Refrigeration Controller

"End"

Min. 0 min Max. 360 min Default 60 min

"AHS"

Min. -100.0 °C Max. 200.0 °C Default 2.0°C

"AHd"

Min. 0.0 K Max. 20.0 K Default 2.0 K

Energy Mode Delay

This is the delay in minutes between the heater and the compressor operation. The heater is not allowed to start until this number of minutes has expired after the compressor has cut out and vice versa.

Auto Heat set point

Set point of auto heating.

Auto heat diﬀerential

Thermostat diﬀerential for auto heatting.

ECS ECO strategy

NOTE: some of these parameters require the installation of the Danfoss Ambient Light Sensor. The Danfoss USB Gateway in combination with "KoolProg Software" allows for real time measurement of the current light intensity. Danfoss recommends testing and adjusting "SLd" and "SLn" values according to customers’ speciﬁc needs.

"ECo"

Min. no Max. yes Default Yes

"EdA"

Min. 1 Max. 10 Default 1

"EPA"

Min. 1 Max. 10 Default 1

"ECt"

Min. 0 min Max. 180 min Default 30 min

"Edd"

Min. 0 min Max. 180 min Default 180 min

"EPd"

Min. 0 min Max. 180 min Default 120 min

"SLd"

Min. 0 Max. 80 Default 5

"SLn"

Min. 0 Max. 80 Default 3

ECO ON/OFF

ECO active or not. If no all other settings are not active.

Door Actions

Times of door action to trigger exiting ECO

Pir Actions

Times of "PIR " action to trigger exiting ECO

Action counter time

It is the duration of time for which the controller will check for number of times of Door action or activity through PIR sensor (mentioned in "EDA" and "EPA" parameters) to exit the ECO mode.

Door delay

Door delay after door close to trigger entering ECO

Pir delay

"PIR" delay to trigger entering ECO

Shop Light Day/SLd Shop Light Night/SLn

These parameters are set as the percentage of the maximum light and determine when the device moves into or out of ECO mode for power-saving purposes. Requires Light Sensor. "SLd" is the amount of ambient light which will cause the device to

move to normal/serving mode from ECO mode (normally occurs in the morning).

"SLn" is the amount of ambient light which will cause the device to

move to ECO mode from normal/serving mode (normally occurs in the evening).

"tto"

Min. 0 hour Max. 168 hour Default 0 hour

"LSd"

Min. 0 min Max. 180 min Default 0 min

"Euu"

Min. no Max. yes Default yes

Time to pull down

Time that ERC must stay in ECO to go into Pulldown upon exiting ECO. E.g: If tto = 2, if the ERC stays in ECO for 2 or more hours, it will go into Pulldown after exiting ECO. If it stays in ECO for less than 2 hours, it will go to Serving Mode upon exiting ECO.

Light Source delay on ECO

Time delay for light source to change from serving mode source to ECO mode source.

EWU active on/OFF

Enable or disable early wake up.

18 | BC200686422115en-000901 © Danfoss | DCS (vt) | 2021.11

User Guide | ERC 112 Refrigeration Controller

"CLH"

Min. 0 hour Max. 24 hour Default 6 hour

"ErL"

Min. 0 min Max. 240 min Default 120 min

"HoL"

Min. 0 hour Max. 999 hour Default 72 hour

Shop close hour

Shop is assumed to be closed when staying in ECO mode longer than shop close hour.

Early wake up time oﬀset

Time of exiting ECO mode for next day= Time of ﬁrst activity to exit ECO mode - the early wake-up time. "0": early wake up function disabled."

Holiday Length

If controller stays for longer than HoL in ECO and no activity is detected, the controller will go into Holiday Mode. Early Wake Up is disabled.

ECA ECO management

"Eto"

Min. -25,0 K Max. 25.0 K Default 4.0 K

"Hto"

Min. -25.0 K Max. 25.0 K Default 6.0 K

"diE"

Min. 0.0 K Max. 10.0 K Default 2.0 K

"FoE"

Min. 0 s Max. 960 s Default 0 s

"FSE"

Min. 0 s Max. 960 s Default 0 s

"ELC "

Default on

Eco Temperature Oﬀset

This parameter gives a relative temperature in degrees. It is the diﬀerence in temperature for ECO mode operation compared to normal mode. NOTE: setting a temperature oﬀset may be illegal in some jurisdictions.

Holiday Temperature Oﬀset

Increase or decrease of temperature with respect to normal mode during holiday mode.

ECO Diﬀerential

Thermostat diﬀerential for ECO.

ECO Fan on cycle

On time for fan during compressor OFF period in ECO mode.

ECO Fan stop cycle

OFF time for fan during compressor OFF period in ECO mode.

ECO Cabinet light control

"on": always ON (Button is default to control light for all these options). "oFF": always OFF. "dor": door sensor only.

"ELd"

Min. 0 min Max. 10 min Default 5 min

Eco Light Delay

This parameter causes a delay to the switch from normal to ECO mode when the shop lights are switched ON or OFF. The ambient light sensor detects the change in light level and causes a switch mode. With this parameter set to zero, the switch OFF mode occurs immediately. If not set to zero (max: 10 minutes), then the change will be delayed by the number of minutes set.

ASi Assignments settings

"uSA"

Min. no Max. yes Default no

"t1A"

Min. -20.0 K Max. 20.0 K Default 0.0 K

"t2A"

MODBUS Safety

"no": MODBUS auto detection is enable and serial communication is available for conﬁguration KoolProg Software. "yES": MODBUS communication is deactivated.

Air Temperature Adjustment (applies to non-Danfoss temperature sensors only)

This parameter is a relative value and allows adjustment of the control sensor temperature. For instance, at a measured temperature of 7*C and "tAd" set to -2 K, the input from the control sensor will be 5*C instead.

"t3A"

"t4A"

User Guide | ERC 112 Refrigeration Controller

Inputs and outputs are conﬁgurable

There are two steps:

1. Deﬁne the type of sensor attached to the input:

- temperature: light/digital.

2. Deﬁne the application for the sensor:

- temperature: control/condenser/evaporator.

- light: ECO/display/both.

- motion

- digital: door sensor. Please contact your local Danfoss representative for information about default settings.

NOTE: coded sensors will impact on the number of possible conﬁgurations. For instance: Danfoss supplies only 2-pole defrost sensors, so input "S3" will most likely be used as a defrost/evaporator temperature sensor input.

"S1C"

Default Stn

"S2C"

Default Stn

"S3C"

Default Stn

"S4C"

Default Stn

"S1A"

Default SCo

"S2A"

Default nC

"S3A"

Default nC

"S4A"

Default nC

"diC"

Default non

"o1C"

Default CoP

"o2C"

Default dEF

"o3C"

Default FAn

"o4C"

Default Lig

S1 Conﬁg/S1C S2 Conﬁg/S2C S3 Conﬁg/S3C S4 Conﬁg/S4C

Available options are: "Stn": for a standard temperature sensor NTC 5 K @ 25°C and TPE precision. "Htn": for a high temperature sensor NTC 100 K @ 25°C. "Pt1": for a temperature sensor Pt1000 ohm @ 0°C (only "S4"). "Ldr": for a light sensor (values given in Luminens). "dig": for a digital sensor with simple ON/OFF indication (motion, magnet, switch, buttom).

S1 Application/S1A S2 Application/S2A S3 Application/S3A S4 Application/S4A

Available options are: "nC": not connected. "SCo": temperature control. "EuA": evaporator temperature. "Con": condenser temperature (Condenser cleaning). "AuS": only for showing temperature on display. "Ldr": light sensor, Luminens. "ECo": external input to control ECO mode. "doC": door contact, contact closed when door closed. "doo": door contact, contact open when door closed. "Pir": motion sensor (only "S3"). "bt5": button 5 (only "S4").

DI Conﬁg

This is the digital input used for a digital sensor or bus communications. "non": not used. "doC": door contact, contact closed when door closed. "doo": door contact, contact open when door closed. "ECo": external input to control ECO mode. "Pir": motion sensor. Passive infrared.

D01 Conﬁg

"CoP": direct compressor control. "PiC": pilot Relay (no zero cross) – if using pilot relay to control a compressor, this option must be used instead of "CoP". "HEt": heating application, inverse output. "PiH": pilot heat relay (no zero cross).

D02 Conﬁg/o2C D03 Conﬁg/o3C D04 Conﬁg/o4C

"no": not used. "dEF": electric defrost heater/valve for hot gas. "ALA": alamr output. "FAn": fan control. "Lig": light control.

User Guide | ERC 112 Refrigeration Controller

"b1C"

Default noP

"b1L"

Default PoF

"b2C"

Default dEF

"b2L"

Default inF

"b3C"

Default tP

"b3L"

Default ECo

"b4C"

Default tn

"b4L"

Default Lig

"b5C"

Default noP

"b5L"

Default noP

Lower left button:

Button 1 Conﬁg (short press)/b1C Button 1 Conﬁg (long press)/b1L

Upper left button:

Button 2 Conﬁg (short press)/b2C Button 2 Conﬁg (long press)/b2L

Upper right button:

Button 3 Conﬁg (short press)/b3C Button 3 conﬁg (long press)/b3L

Lower right button:

Button 4 Conﬁg (short press)/b4C Button 4 Conﬁg (long press)/b4L

Button 5 Conﬁg (short press) / b5C Button 5 Conﬁg (long press) / b5L

(Button 5 is an external button option which can be connected and conﬁgured through S4 sensor.)

The buttons can be programmed as follows:

Short press function Long press function (3 s.)

"noP": not operating

"tP": increase set point

"tn": decrease set point

"ECo": toggle Eco mode

"Lig": toggle light

"dEF": toggle defrost

"SuP": toggle super-cool/pull down

"diP" : increase display intensity

"din" : decrease display intensity

"CFA ": toggle °C and °F

NOTE: Your assignments may not be shown on the printed buttons. We advice to use this functionality together with the fully integrated mounting model only.

Short press function Long Press function (3 s.)

"noP": not operating

"ECo": toggle ECO mode

"SuP": toggle super-cool/pull down

"Lig": toggle light

"dEF": toggle defrost

"noP": not operating

"tP": increase set point

"tn": decrease set point

"ECo": toggle Eco mode

"Lig": toggle light

"dEF": toggle defrost

"SuP": toggle super-cool/pull down

"diP": increase display intensity

"din": decrease display intensity

"CFA ": toggle °C and °F

"PoF": ERC power ON/OFF

"HoL": enter holiday mode

"inF": enter info menu

"tEc": Toggle Winter & Summer Eco mode

"noP": Not operating

"ECo": Toggle Eco mode

"SuP": Toggle Super-Cool /Pull-down

"Lig": Toggle light

"dEF": Toggle defrost

"PoF": ERC power ON/OFF

"HoL": enter holiday mode

"PS1"

Min. 0 Max. 999 Default 0

"PS2"

Min. 0 Max. 999 Default 0

Password level 1 / PS1 Password Level 2 / PS2 Password Level 3 / PS3

These assign passwords to the three levels of access. The password is a three-digit number. Access levels are Shop, Service and OEM. You may not therefore have access to change all the passwords. Passwords are entered by using the up and down arrow buttons. Danfoss advises against using passwords which are easy to remember or enter, for example 111, 222, 123 etc.

"PS3"

Min. 0 Max. 999 Default 0

NOTE: When accessing the controller with 3 wrong password in a sequence ERC will automatically block access for 15 minutes.

Ser Service information settings

The parameters in the following section are READ ONLY and cannot be changed by the user. They provide information for technicians and OEM users.

NOTE: the only parameters that can be conﬁgured are: "oEL", "oEn", "oEH". These parameters allow OEMs to enter their own product code.

"ACt" Accumulated Comp. run time

"AFt" Accumulated Fan run time

"ALt" Accumulated Light run time

"AEt" Accumulated ERC up time

"Sdi" DI

physcial DI pin state (ON; OFF).

"uAC" Voltage value

Current main power supply voltage.

User Guide | ERC 112 Refrigeration Controller

"ouS" DOs Status

Current relay open closed status. "IIII" = all relay ON (Upper bar for on, Lower bar for OFF). "II" = DO1 ON, DO2 OFF, DO3 & DO4 NA (no bar if relay not mounted). "IIII" = all relay OFF (Upper bar for on, Lower bar for OFF).

"rL1" Relay 1 counter

Thousands of cycles of compressor relay since manufacture.

"rL2" Relay 2 counter

Thousands of cycles of no. 2 relay since manufacture.

"rL3" Relay 3 counter

Thousands of cycles of no. 3 relay since manufacture.

"rL4" Relay 4 counter

Thousands of cycles of no. 4 relay since manufacture.

"int" Interval Counter

Compressor run time since last defrost.

"dnt" Defrost time counter

Duration of last defrost cycle [min].

"ont" Door open counter

"ont/100"=number of door openings since last reset.

"Snu" Serial number

Serial number given at manufacturing.

"Fir" SW version

Danfoss software version number.

"HAr" HW version

Danfoss hardware version number.

"onL" OrderNoLow

Danfoss order code number.

"onH" OrderNoHigh

Danfoss order code number.

"oEL" OEM code Low

"oEn" OEM code Middle

"oEH" OEM code High

"PAr " Parameter version

OEM parameter version number [requires EKA copy key update].

"CHd" Manufacturing date

Programme date WWY: week number and year number (2010-19).

"SFC" Set as Default

Resets all parameters to last good OEM settings.

"Ctt" Condenser Temp

Temperature of the condensor sensor.

"Et1" Evaporator1 Temp

Temperature of the evaporator sensor1.

"Et2" Evaporator2 Temp

Temperature of the evaporator sensor2.

"AuS" AUX Temp.

Temperature of the AUX sensor. invisible.

"LLu" Light level value

Actual light level value from light sensor.

"Pir" Motion sensor state

"att" Raw S air Temp

"ESS" External ECO switch state

User Guide | ERC 112 Refrigeration Controller

Display messages

"unP" Device is unprogrammed (relay output is locked)

"Prg" Device has not ﬁnished programming (relay output is locked)

"Eco" Device is in Eco mode

"SC" Device is in pull-down mode (super-chill)

"dEF" Device is defrosting

"HoL" Device is in Holiday mode

User Guide | ERC 112 Refrigeration Controller

Troubleshooting

Problem Probable cause Remedy

Compressor does not start Waiting for compressor delay timer

Fan does not start Door is open or door contact is defective Fan stops when door is opened

Defrost does not start Controller in pull down mode Defrost might be delayed during pull down

Alarm does not sound Alarm delayed Check ALA->Htd, Abd

Display brightness is weak Ambient light sensor broken Replace sensor

Shift between ECO and normal mode does not happen on ambient light change

Display alternates between condenser and temperature

Display alternates between high and temperature

Display alternates between low and temperature

Display shows "dEf" Defrost in progress Check diS ->SdF

Defrost in progress Line voltage to compressor too low or too high

Ambient light sensor broken or light level not set properly

Condenser too hot Clean condenser

Temperature too high Check ALA->HAt

Temperature too low Check ALA -> LAt

Check CoP->CSt Check CoP ->Pot /Pod Check dEF ->dit, dot Check CoP->uLi, uLo, uHi

Check that door contact is ok

Check parameter Pud->Pdi

Check Pud->Pdd

Check Eng->SLd, SLn

Check Con ->CAL, CbL

Alarm code

"Hi" Air temperature is higher than

"Lo" Air temperature is lower than

"Con" Condenser temperature is too

"dor" Door open for more than

"uHi" Line voltage is higher than

"uLi" Line voltage is lower than

"LEA" Compressor continuous

"E01" "S1" error Always Blink "E01". If conﬁgured: cut in alarm relay, beep the buzzer "S1 " sensor failure

"E02" "S2" error Always Blink "E02". If conﬁgured: cut in alarm relay, beep the buzzer "S2" sensor failure

"E03" "S3" error Always Blink "E03". If conﬁgured: cut in alarm relay, beep the buzzer "S3" sensor failure

"E04" "S4" error Always Blink "E04". If conﬁgured: cut in alarm relay, beep the buzzer "S4" sensor failure

Trigge r Automatic

clearance

User conﬁgured Blink "Hi" with the highest temperature; If conﬁgured:

"AL A->H at " for "AL A->H td "

User conﬁgured Blink "Lo" with the lowest temperature. If conﬁgured:

"LAt" for "Ltd"

User conﬁgured Blink "Con". If conﬁgured: cut in alarm relay, beep the buzzer Condenser alarm

high or too low

Always Blink "dor". If conﬁgured: cut in alarm relay, beep the buzzer Door open alarm

"ALA -> dod"

Always Blink "uHi". If conﬁgured: cut in alarm relay, beep the buzzer High voltage alarm

"Cop->uHi"

Always Blink "uLo". If conﬁgured: cut in alarm relay, beep the buzzer. Low voltage alarm

"Cop->uLi"

Always Blink "LEA". If conﬁgured: cut in alarm relay, beep the buzzer Leakage alarm running for more than "AL A->L EA "

Outputs Comments

High temperature alarm

cut in alarm relay, beep the buzzer

Low temperature alarm

cut in alarm relay, beep the buzzer

(short or open)

User Guide | ERC 112 Refrigeration Controller

Typical applications

Glass Door Merchandiser, No-frost freezer/sub-zero cooler

Note: this is a typical (default) wiring diagram since both inputs (AI/DI’s) and outputs (DO’s) can be assigned diﬀerently. Please see "ASi", assignment

ERC 112D

Red LED without buzzer 080G3203

Blue LED without buzzer 080G3207

Red LED without Buzzer, STM32 080G3490

Blue LED without Buzzer, STM32 080G3492

Temperature Sensor for

Cabinet Temperature

Control PVC Standard Connector type (S1) 3-pole

470 mm 077F8751 1000 mm 077F8786 1000 mm 077F8756 1000 mm 080G3390 1000 mm 080G3340 1000 mm 080G3320 1000 mm 077F8757 1500 mm 077F8790 1500 mm 077F8760 2000 mm 080G3391 2000 mm 080G3341 2000 mm 080G3322 1500 mm 077F8761 2000 mm 077F8794 2200 mm 077F8766 3000 mm 080G3392 3000 mm 080G3342 3000 mm 080G3324 2000 mm 077F8765 3000 mm 077F8798 3000 mm 077F8768 4000 mm 080G3393 4000 mm 080G3343 2200 mm 077F8767 6000 mm 080G2029 6000 mm 080G2039 3000 mm 077F8769 3500 mm 077F8723 6000 mm 080G2019

Temperature Sensor for

Evaporator

Temperature Control PVC Standard Connector type (S2) 2-pole

Temperature Sensor for Condenser Temperature

Control PVC Standard Connector type (S3) 3-pole

Motion detection

also connectable to S3

Motion sensor Connector type (di) 3-pole

Door sensor cable di/S4 3-pole

Door input

Magnetic door sensor di/S4 3-pole

Glass Door Merchandiser

ERC 112C Controller

Red LED without buzzer 080G3202

Blue LED without buzzer 080G3206

Red LED without buzzer, STM32 080G3489

Blue LED without buzzer, STM32 080G3491

Temperature Sensor for

Cabinet Temperature

Control PVC Standard Connector type (S1) 3-pole

Temperature Sensor for

Evaporator

Temperature Control PVC Standard Connector type (S2) 2-pole

Temperature Sensor for

Condenser Temperature

Control PVC Standard Connector type (S3) 3-pole3-pole

Motion detection

also connectable to S3

Motion sensor Connector type (di) 3-pole

Door sensor cable di/S4 3-pole

Door input

Magnetic door sensor di/S4 3-pole

User Guide | ERC 112 Refrigeration Controller

Gastro No-frost freezer

ERC 112D Controller

Red LED with buzzer 080G3213

Blue LED with buzzer 080G3217

Red LED with buzzer, STM32 080G3498

Blue LED with buzzer, STM32 080G3499

Temperature Sensor for

Cabinet Temperature

Control

PVC Standard Connector type (S1) 3-pole

470 mm 077F8751 1000 mm 077F8786 1000 mm 077F8756 1000 mm 080G3340 1000 mm 080G3320 1000 mm 077F8757 1500 mm 077F8790 1500 mm 077F8760 2000 mm 080G3341 2000 mm 080G3322 1500 mm 077F8761 2000 mm 077F8794 2200 mm 077F8766 3000 mm 080G3342 3000 mm 080G3324 2000 mm 077F8765 3000 mm 077F8798 3000 mm 077F8768 4000 mm 080G3343 2200 mm 077F8767 6000 mm 080G2029 6000 mm 080G2039 3000 mm 077F8769 3500 mm 077F8723 6000 mm 080G2019

Temperature Sensor for

Evaporator Temperature

Control

PVC Standard Connector type (S2) 2-pole

Temperature Sensor for Condenser Temperature

Control

PVC Standard Connector type (S3) 3-pole

Door sensor cable di/S4 3-pole

Door input

Magnetic door sensor di/S4 3-pole

Gastro Cooler

ERC 112C Controller

Red LED with buzzer 080G3212

Blue LED with buzzer 080G3216

Red LED with Buzzer, STM32 080G3493

Blue LED with buzzer, STM32 080G3494

Temperature Sensor for

Cabinet Temperature

Control

PVC Standard Connector type (S1) 3-pole

Temperature Sensor for

Evaporator Temperature

Control

PVC Standard Connector type (S2) 2-pole

Temperature Sensor for Condenser Temperature

Control

PVC Standard Connector type (S3) 3-pole

Door sensor cable di/S4 3-pole

Door input

Magnetic door sensor di/S4 3-pole

User Guide | ERC 112 Refrigeration Controller

Application Matrix

ERC 112 Output Input

Application ERC type DO1 DO2 DO3 DO4 S1 S2 S3 S4 Di

Standard beverage cooler

Sub-zero beverage cooler

Out-door beverage cooler

Nofrost freezer w. glassdoor

CFF refrigerator ERC 112C Comp Fan Lamp Control Defrost Condenser Door

CFF freezer ERC 112D Comp Heater Fan Lamp Control Defrost Condenser Door

S: connector position

NOTE:

• Select only one function per input, e.g. condenser sensor or ambient light sensor.

• Make sure that the accessory you select has a matching connector to the input, e.g. a sensor for input "S2" must have "S2" connector.

• Condenser sensor or light sensor are optional and can be omitted.

• Defrost sensor is mandatory when electrical heater is used for defrost. For natural defrost it can be omitted.

ERC 112C Comp Fan Lamp Control Defrost

ERC 112D Comp Heater Fan Lamp Control Defrost

ERC 112D Comp Heater Fan Lamp Control Condenser

ERC 112D Comp Heater Fan Lamp Control Evaporator

Condenser or Ambient Light or Motion detection

Ambient Light or Motion detection

Condenser or Ambient Light or Motion detection

Door or Motion detection

User Guide | ERC 112 Refrigeration Controller

Sensor placement

Control sensor

The control sensor must always be connected and is used for controlling the cut-in and cut-out of the compressor according to the set point. The sensor is also used for the displayed temperature.

Vertical coolers with fan

Most common placement is in the return air to the evaporator. The sensor can be placed close to the fan – even when the fan is pulsed during compressor OFF periods: the updating of the temperature is blocked when the fan is stopped and only updated when the fan has been running for a while, so that the heat from the fan does not aﬀect the temperature reading. For applications sensitive to sub-zero temperatures, sensor placement in the evaporator outlet air can be considered.

Vertical freezers with fan

Placement in the return air or in the freezer compartment.

Coolers without fan

The best results are normally obtained when the sensor is placed at the side-wall, 10 cm from the back and approximately at 1/3 from the bottom or where the evaporator ends. The control sensor must always be connected and is used for controlling the cut-in and cut-out of the compressor according to the set point. The sensor is also used for the displayed temperature.

Evaporator sensor

Condenser sensor

The evaporator sensor is only used for de-icing of the evaporator and has no control purpose.

Placement of sensor

Place the sensor where the ice melts last. Please be aware of that sharp ﬁnns can damage the cable.

The condenser sensor is used to protect the compressor against high pressure when the condenser is blocked or the condenser fan fails.

Condenser sensor

Place the sensor at the liquid side of the condenser. Use a metal bracket or metal tape to ensure good thermal conductivity. Be sure that the cable does not pass hot spots at the compressor or condenser that exceeds 80°C.

User Guide | ERC 112 Refrigeration Controller

Ambient light sensor

Door sensor

The ambient light sensor is used to detect opening hours of the shop.

Placement of sensor

The sensor must be placed so that the interior light does not aﬀect the sensor. Possible placement could be in the front of the cooler or at the top.

The door sensor is used to detect buying activity and to stop the fan when the door is opened.

Door sensor

Danfoss does not supply the door-switch. Use the door-switch you have and connect it to the cable supplied by Danfoss.

ADAP-KOOL®

Danfoss ERC 112 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual