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.
ClipsAre used to secure the controller in place in the
Front frameThe 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.
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.
"DO4"8 A resistive, FL A2/LRA12, TV-18 A resistive, 2(2) A
"DO5"F LA2/L RA12 , TV-18 A resistive, 2(2) A
"DO6"FLA 2/ LRA12, TV -18 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.
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.
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").
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.
LigLight 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.
PudPull 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.
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".
dEFDefrost 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.
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.
CoPCompressor 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.
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.
ConCondenser 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.
This parameter sets the lowest (condenser) temperature at which the
compressor is allowed to start.
diSDisplay 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.
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
ALAAlarm 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.
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.
AHCAutomatic 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.
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.
ECSECO 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.
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.
ECAECO 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.
ASiAssignments 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.
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.
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).
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.
(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 functionLong 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.
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.
SerService 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.
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).
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
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.