Danfoss Erc 112 User manual

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

Application

Advantages

Approvals

Password protected

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

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.

Introduction

User Guide | ERC 112 Refrigeration Controller

2 | BC200686422115en-000802 © Danfoss | DCS (vt) | 2019.07

Typical application

S3, S4 are optional

Glass Door Merchandiser

No-frost freezer/sub-zero cooler

S2, S3, S4 are optional

S3, S4 are optional

Gastro

No-frost freezer/Cooler

S2, S3, S4 are optional

User Guide | ERC 112 Refrigeration Controller

Display

Buttons

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".

Clips Are used to secure the controller in place in the

case of rear mounting. They are not used with

front mounting.

There are two identical clips, one placed on

either side of the controller.

Front frame The front frame provides a proper ﬁnish but can

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

Defrost sensor

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.

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.

Product overview

Controller without front frame Front frame

User Guide | ERC 112 Refrigeration Controller

4 | BC200686422115en-000802 © Danfoss | DCS (vt) | 2019.07

Quick programming

Software for PC

USB gateway

USB programming key

Docking station

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.

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.

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-and-

support/downloads/dcs/koolprog/

User Guide | ERC 112 Refrigeration Controller

Dimensions

Power Supply 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

Input

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

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

• Light sensor: Danfoss ECO light sensor • Motion sensor

Output

UL60730 EN60730

"DO1" (Compressor relay) 120 V AC: 16 A resistive/FLA16/LRA72

240 V AC: 10 A resistive/FLA10/LRA60 16(16) A

"DO4" 8 A resistive, FLA2/LRA12, TV-1 8 A resistive, 2(2) A

"DO5" FL A2/LR A12, TV-1 8 A resistive, 2(2) A

"DO6" FL A2/LR A12, TV-1 8 A resistive, 2(2) A

Max 10 A total "DO4-6"

Probes Danfoss NTC sensors and Danfoss ECO accessories (Light, Motion and Door sensors)

Danfoss Pt 1000 ohm/0°C

Connectors Modular connector system for OEM customers, with optional output screw terminal adapter;

Input connector type: Rast2 5 Edge connectors; output connector type: RAST 5 standard

Programming Programming with Danfoss KoolProg PC software, 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 Front: IP65

Rear: water and dust protection corresponds to IP31, accessibility of connectors limit rear part rating to IP00

Environmental Pollution degree II, non-condensing

Resistance to heat & fire Category D (UL94-V0)

EMC category Category I

Over Voltage Category Category II (IEC 60664-1)

Temperature for Ball Pres-

sure Test According to EN 60730-1, Annex G

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

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

These approvals are only valid when used with recommended Danfoss

accessories.

30 mm

71 mm

28,5 mm

71 mm

78,25 mm

36,5 mm

78,25 mm

82,25 mm

28 mm

Rear mounting

(Lock with clips)

Front mounting

(Lock with frame)

Technical specs

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.

User Guide | ERC 112 Refrigeration Controller

6 | BC200686422115en-000802 © Danfoss | DCS (vt) | 2019.07

Connections

(Inputs and outputs are

conﬁgurable)

ERC 112C (3 relays)

Light/ Motion

Cabinet

temp. sensor

Evaporator

temp. sensor

(Pt 1000 ohm)

Door

ERC 112D (4 relays)

Light/ Motion

(Pt 1000 ohm)

Door

Cabinet

temp. sensor

Evaporator

temp. sensor

Condenser

(Pt 1000 ohm)

Door/ Motion

Cabinet

temp. sensor

Evaporator

temp. sensor

Condenser

(Pt 1000 ohm)

Door/ Motion

Cabinet

temp. sensor

Evaporator

temp. sensor

Note

S4 Port can also be used to connect

other sensors and Door sensor.

User Guide | ERC 112 Refrigeration Controller

Type I-Pack

Qty. Code no.

-100 – 200 °C, Pt 1000

S4, 1000 mm, 3-pole 108 080G3350

S4, 2000 mm, 3-pole 54 080G3351

S4, 3000 mm, 3-pole 27 080G3352

Light-sensors

S3, 1000 mm, 3-pole 108 080G3311

S3, 2000 mm, 3-pole 108 080G3313

S3, 3000 mm, 3-pole 108 080G3315

Magnetic door sensor

di/S4, 1000 mm, 3-pole 81 080G3320

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

1080G9701

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.

Sx (di)= connector position.

Inputs are conﬁgurable.

Type I-Pack

Qty. Code no.

ERC 112C, Red LED, without

buzzer

27 080G3202

ERC 112D, Red LED, without

buzzer

27 080G3203

ERC 112C, Blue LED, without

buzzer

27 080G3206

ERC 112D, Blue LED, without

buzzer

27 080G3207

ERC 112C, Red LED, with buzzer 27 080G3212

ERC 112D, Red LED, with buzzer 27 080G3213

ERC 112C, Blue LED, with buzzer 27 080G3216

ERC 112D, Blue LED, with buzzer 27 080G3217

ERC 112C, Blue LED, with buzzer 27 080G3233

ERC 112D, Blue LED, with buzzer 27 080G3413

Temperature sensors

-40 – 85 °C, PVC Standard, NTC 5 K

S1, 470 mm, 3-pole 120 077F8751

S1, 1000 mm, 3-pole 120 077F8757

S1, 1500 mm, 3-pole 120 077F8761

S1, 2000 mm, 3-pole 120 077F8765

S1, 2200 mm, 3-pole 120 077F8767

S1, 3000 mm, 3-pole 60 077F8769

S1, 3500 mm, 3-pole 60 077F8723

S1, 6000 mm, 3-pole 27 080G2019

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

S1, 1500 mm, 3-pole 120 077F8726

S1, 2000 mm, 3-pole 120 077F8727

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

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

-40 – 85 °C, PVC Standard, NTC 5 K

S2, 1000 mm, 2-pole 120 077F8786

S2, 1500 mm, 2-pole 120 077F8790

S2, 2000 mm, 2-pole 120 077F8794

S2, 3000 mm, 2-pole 60 077F8798

S2, 6000 mm, 2-pole 27 080G2029

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

S3, 6000 mm, 3-pole 27 080G2039

Code numbers

Note: For more information about temperature sensor

types and connectors, please refer to Danfoss’technical

brochure "NTC type temperature sensors for ETC & ERC

controllers".

User Guide | ERC 112 Refrigeration Controller

8 | BC200686422115en-000802 © Danfoss | DCS (vt) | 2019.07

Programming Tools

Examples

Manual operation with

buttons (Direct Access)

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.

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).

1 Press: variable direct

function, e.g. “ECO”/”Night mode”

Sub function: back

1 Press: variable direct

function, e.g. light

Sub function: “OK”

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.

Operation

All these tools are supplied separately.

For technical literature and further information,

please contact your local Danfoss representative.

User Guide | ERC 112 Refrigeration Controller

ERC menu code Description

"tHE Thermostat settings

"SEt"

Min. -100.0°C

Max. 200.0°C

Default 2.0°C

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)

"SPr"

Min. 0.0

Max. 1.0

Default 0.5

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.

"diF"

Min. 0.0 K

Max. 20.0 K

Default 2.0 K

Thermostat diﬀerential

This deﬁnes the diﬀerence between the cut-out and the cut-in.

The desired temperature is determined by "SPr" and "diF".

"HSE"

Min. -100.0°C

Max. 200.0°C

Default 50.0°C

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".

"LSE"

Min. -100.0°C

Max. 200°C

Default -35.0°C

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".

"iCi"

Min. no

Max. yes

Default no

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.

"SP2"

Min. -25 K

Max. 25 K

Default 0

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".

"dF2"

Min. 0 K

Max. 20 K

Default 2

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 Fan settings

"FCt"

Default FAo

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

"Fod"

Min. 0 s

Max. 240 s

Default 0 s

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.

"FSd"

Min. 0 s

Max. 240 s

Default 0 s

"FoC"

Min. 0 s

Max. 960 s

Default 0 s

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").

"FSC"

Min. 0 s

Max. 960 s

Default 0 s

Menu/functions

User Guide | ERC 112 Refrigeration Controller

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