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.
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
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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.
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.
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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)
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.
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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
60
077F8769
60
077F8723
27
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
60
077F8798
27
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.
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.
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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").
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.
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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.
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.
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User Guide | ERC 112 Refrigeration Controller
"ESt"
Min. 0 min Max. 60 min Default 1 min
Error Stop 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. "ESt" define the duration the compressor will be "idle".
"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.
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.
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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.
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.
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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.
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"
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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
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"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.
1
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
4
"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.
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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
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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)
(short or open)
(short or open)
(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
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-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
© Danfoss | DCS (vt) | 2021.11 BC200686422115en-000901 | 25
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
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
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
Condenser or Ambient Light or Motion detection
Ambient Light or Motion detection
Condenser or Ambient Light or Motion detection
Door or Motion detection
Door or Motion detection
Door or Motion detection
Door or Motion detection
© Danfoss | DCS (vt) | 2021.11 BC200686422115en-000901 | 27
User Guide | ERC 112 Refrigeration Controller
Sensor placement
Control sensor
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.
© Danfoss | DCS (vt) | 2021.11 BC200686422115en-000901 | 29
© Danfoss | DCS (vt) | 2021.11 BC200686422115en-000901 | 30
ADAP-KOOL®
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