Danfoss ERC 112D VSC User manual

User Guide
Electronic Refrigeration Controller
ERC 112D VSC for variable speed
compressor
This user guide is intended to be used by OEMs for the purpose of
programming ERC 112D VSC. It may also be useful for technicians.
However, it is not intended as a user guide for end users.
www.danfoss.com/erc

Application
Advantages
Approvals
Password protected
Temperature control for refrigeration appliances.
Speed control of variable speed compressor.
Front panel mounting.
The latest generation CPU, plenty of memory
and high-end electronic components allow for
a uniquely versatile software. Three separate
password-protected user levels can be used to
control more than 300 different parameters to fit
all individual requirements.
R290/R600a end-use applications employing in
accordance to EN/IEC 60335-2-24, annex CC and
EN/IEC 60335-2-89, annex BB;
Glow wire according to EN/IEC 60335-1;
IEC/EN 60730
UL60730
NSF
CQC
EAC
Ukraine
The access level can be set separately for each
parameter using KoolProg Software Tool.
There are three levels of access 1, 2, 3:
- level 1 is for shop access;
- level 2 for technicians;
- level 3 for OEMs.
The access levels cannot be set using the buttons.
Passwords for the different levels can however be
altered for the level of access you have,
e.g. a level 2 user can change the password for
level 1 and level 2 but not level 3.
Introduction
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Typical application
Glass Door Merchandiser
No-frost freezer/sub-zero cooler
Gastro
No-frost freezer/Cooler
User Guide | ERC 112D VSC Refrigeration Controller
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Display
Buttons
The ERC 112D VSC is an electronic refrigeration
controller with an LED display especially
developed for bottle coolers and commercial
fridges and freezers where a Variable speed
compressor is installed. 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 upper left button is "Defrost".
The lower left button is "Super chill".
Clips Are used to secure the controller in place in the
case of rear mounting. They are not used with
front mounting.
There are two identical clips, one placed on
either side of the controller.
Front frame The front frame provides a proper finish but can
also be used to secure the controller in place
when using front mounting. In this case, clamps
are not required. Contact Danfoss for details.
"S1"
Temperature sensor for
cabinet
"S2"
Temperature sensor for
defrost
"S3"
Temperature sensor for
condenser, light sensor or
Motion sensor
"S4"
Frequency signal for variable
speed compressor.
5 V, 0-200 Hz
"di"
Door signal or
Motion sensor
Defrost sensor
The function of an input can be reprogrammed,
but the connector can not be moved.
The connector is designed to only one location.
"S1" to "S1", "S2" to "S2", etc.
Control temperature sensor
There are different lengths.
Defrost temperature sensor
Should be mounted on the evaporator.
Condenser temperature sensor
Should be mounted on the condenser.
Light sensor
Is optional and is used to measure the level of
ambient light around the cabinet so that night
and day "Economy", "Normal" modes of operation
can automatically be set, as well as the brightness
of the display.
Frequency Signal
Connected to variable speed compressor drive
frequency input port.
Motion sensor
Should be mounted on the cabinet front.
Door sensor connector cable
Is optional and is a connector and cable with
spade terminals compatible with door contacts
used in refrigeration applications.
Product overview
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Quick programming
KoolProg
Software from Danfoss for programming the
ERC-controller via a PC rather than with the front
panel buttons.
https://www.danfoss.com/en/service-and-
support/downloads/dcs/koolprog/
Software for PC
USB gateway
USB programming key
Docking station
USB gateway
The USB Gateway is a laboratory tool, offering
fast and easy programming of any ERC
controller connected directly to the PC.
"KoolProg Software" installation kit is provided
for the PC. The gateway is standard inventory
for OEM labs.
Programming an individual unit in a
laboratory
The USB key requires "KoolProg Software"
running on a PC. It enables parameters to be set
in real time and an array of status information to
be read (bidirectional connection).
Once the desired settings have been
determined, a specific parameter file is saved to
the USB key for later mass programming through
the docking station.
Mass programming on an assembly line:
The docking station is used for high volume
programming of ERC controllers, for example on
an assembly line. The docking station is a
write-only device.
The USB key, is to be inserted into the docking
station. The settings are then loaded into each
successive controller in a matter of seconds.
"KoolProg Software" is not required for mass
programming.
User Guide | ERC 112D VSC Refrigeration Controller
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Dimensions
Power Supply 100 - 240 V AC Switch mode power supply. Average 0.7 W
Purpose of control To control commercial Refrigeration Applications using variable speed compressor
Construction of Control Electronic control for incorporation for use in Class I and Class II appliance
Automatic Action Micro- disconnection on operation type 1.B
Input
4 inputs: 3 analogue (digital), 1 digital; user specific assignment
• Cabinet air/Evaporator/Condenser • Door sensor: all types, user specific
• Light sensor: Danfoss ECO light sensor • Motion sensor
Output
UL60730 EN60730
"DO1" 120 V AC: 16 A resistive/FLA16/LRA72
240 V AC: 10 A resistive/FLA10/LRA60 16(16) A
"DO4" 8 A resistive, FLA2/LRA12, TV-1 8 A resistive, 2(2) A
"DO5" FL A2/LRA12, T V-1 8 A resistive, 2(2) A
"DO6" FL A2/LRA12, T V-1 8 A resistive, 2(2) A
Max 10 A total "DO4-6"
S4: Frequency Signal for Variable speed 5 V, 0-200 Hz
Probes Danfoss NTC sensors and Danfoss ECO accessories (Light, Motion and Door sensors)
Connectors Modular connector system for OEM customers, with optional output screw terminal adapter;
S1-S4 & Di: RAST 2.5 edge, DO1-DO4, Line & Neutral- RAST 5 standard
Programming Programming with Danfoss PC software, gateway, EKA 183A
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 – 55°C, 93% rH
Storage Conditions -40°C – 85°C, 93% rH
Range of Measurement -40°C – 85°C
Protection Front: IP65
Rear: water and dust protection corresponds to IP31, accessibility of connectors limit rear part rating to IP00
Environmental Pollution degree II, non-condensing
Resistance to heat & fire Category D (UL94-V0)
EMC category Category I
Over Voltage Category Category II (IEC 60664-1)
Temperature for Ball Pres-
sure Test According to EN 60730-1, Annex G
For SELV Circuits Input Probes or Digital Input connected to SELV limited energy >15W
Operating Cycles Main relay: more than 175,000 at full load (16A (16A))
Approvals
R290/R600a end-use applications employing in accordance to
EN/IEC 60335-2-24, annex CC and EN/IEC 60335-2-89, annex BB
Glow wire according to EN/IEC 60335-1
IEC/EN 60730
UL60730
NSF
CQC
EAC
Ukraine
These approvals are only valid when used with recommended Danfoss
accessories.
Technical specs
IMPORTANT NOTE
The inputs and frequency signal port 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.
30 mm
71 mm
28,5 mm
71 mm
78,25 mm
36,5 mm
78,25 mm
82,25 mm
28 mm
Rear mounting
(Lock with clips)
Front mounting
(Lock with frame)
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Connections
(Inputs and outputs are configurable)
Application:
Light / Motion, Door
Application:
Condenser, Door / Motion
Cabinet temp. sensor Evaporator temp. sensor Light / Motion VS Compressor Drive Door
Cabinet temp. sensor Evaporator temp. sensor Condenser VS Compressor Drive Door / Motion
User Guide | ERC 112D VSC Refrigeration Controller
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Type I-Pack
Qty. Code no.
Light-sensors
S3, 1000 mm, 3-pole 108 080G3311
S3, 2000 mm, 3-pole 108 080G3313
S3, 3000 mm, 3-pole 108 080G3315
Cable, variable speed compressor
S4, 3500 mm, 3-pole 81 080G3397
Magnetic door sensor
di, 1000 mm, 3-pole 81 080G3320
di, 2000 mm, 3-pole 81 080G3322
di, 3000 mm, 3-pole 81 080G3324
Cable door sensor
di, 1000 mm, 3-pole 108 080G3340
di, 2000 mm, 3-pole 108 080G3341
di, 3000 mm, 3-pole 108 080G3342
di, 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
OEM Docking station, production
line
1080G9701
Gateway incl USB Cable, R&D 1 080G9711
Programming key EKA183A 1 080G9740
Power plug *
6-pole with screw 54 080G3357
* The connectors are rated for 28 Amps max.
Sx (di)= connector position.
Inputs are configurable.
Type I-Pack
Qty. Code no.
ERC 112D VSC, Blue LED, with
buzzer
27 080G3414
Temperature sensors
-40 – 80 °C, PVC Standard, NTC 5 K
S1, 470 mm, 3-pole 120 077F8751
S1, 1000 mm, 3-pole 120 077F8757
S1, 1500 mm, 3-pole 120 077F8761
S1, 2000 mm, 3-pole 120 077F8765
S1, 2200 mm, 3-pole 120 077F8767
S1, 3000 mm, 3-pole 60 077F8769
S1, 3500 mm, 3-pole 60 077F8723
S1, 6000 mm, 3-pole 27 080G2019
-40 – 120 °C, TPE precision NTC 5 K, Santroprene
S1, 1500 mm, 3-pole 120 077F8726
S1, 2000 mm, 3-pole 120 077F8727
-20 – 200 °C, Silicone rubber cable, NTC 100 K
S1/S3, 2000 mm, 3-pole 108 080G2043
-40 – 80 °C, PVC Standard, NTC 5 K
S2, 1000 mm, 2-pole 120 077F8786
S2, 1500 mm, 2-pole 120 077F8790
S2, 2000 mm, 2-pole 120 077F8794
S2, 3000 mm, 2-pole 60 077F8798
S2, 6000 mm, 2-pole 27 080G2029
S3, 1000 mm, 3-pole 120 077F8756
S3, 1500 mm, 3-pole 120 077F8760
S3, 2200 mm, 3-pole 120 077F8766
S3, 3000 mm, 3-pole 60 077F8768
S3, 6000 mm, 3-pole 27 080G2039
Code numbers
Note: For more information about temperature sensor
types and connectors, please refer to Danfoss’ technical
brochure "NTC type temperature sensors for ETC & ERC
controllers".
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Examples
Manual operation with
buttons (Direct Access)
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
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).
Changing a Parameter
Some parameters may be hidden to you.
Your access level will determine which
parameters you can view and edit:
1. Press "^" and "v" together and hold 5 seconds
to access the menu.
2. First parameter group is shown "tHE".
3. Press "^" and "v" to find the desired group.
4. Press "OK".
5. First parameter is shown.
6. Press "^" and "v" to find the desired
parameter.
7. Press "OK".
8. Press "^" and "v" to find the desired setting.
9. Press "OK".
After 30 seconds, the display automatically
reverts to showing the current temperature.
Or Press 2 x "Back".
NOTE:
Incorrect parameter settings can lead
to inadequate cooling, excessive energy
consumption, unnecessary alarms and in the
case of temperature-sensitive food storage,
breaches in food hygiene principles and
regulations.
Only a trained operator should make changes to
parameters.
Operation
Software tool/Gateway
Docking station
The controller can be controlled in three ways:
Using "KoolProg Software", the Danfoss Docking
Station or manually by means of the buttons on
the front panel.
Docking station is supplied separately.
For further information, please contact your local
Danfoss representative.
"KoolProg Software" is licenced Danfoss software
offering easy parameter set up via a USB gateway.
This software is supplied separately;
for technical literature and further information,
please contact your local Danfoss representative.
1 Press: variable direct
function, e.g. “Defrost”
Sub function: back
1 Press: variable direct
function, e.g. Super Chill
Sub function: “OK”
1 Press: temperature set point
Sub function: “up”
1 Press: temperature set point
Sub function: “down”
User Guide | ERC 112D VSC Refrigeration Controller
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ERC menu code Description
"tHE Thermostat settings
"SEt"
Min. -100.0°C
Max. 200.0°C
Default 2.0°C
Set point
This parameter defines the desired temperature (set point).
In standard operation the set point is changed by simply pressing the
"temperature up/down" buttons on ERC 112D VSC; for laboratory and
assembly line you may opt for software controlled set point adjustment
(speed improvement)
"SPr"
Min. 0.0
Max. 1.0
Default 0.5
Current set point adjustment value diF * SPr
The default value is set to 0.5 and the parameter is hidden by default.
"Spr" defines the position of the set point in relation to cut-in and cut-out.
"Spr=0,5" sets the set point mid between cut-in and cut-out.
"Spr=0" sets the set point at the cutout. "Spr=1" sets the set point at cut-in.
"diF"
Min. 0.0 K
Max. 20.0 K
Default 2.0 K
Thermostat differential
This defines the difference between the cut-out and the cut-in.
The desired temperature is determined by "SPr" and "diF".
"HSE"
Min. -100.0°C
Max. 200.0°C
Default 50.0°C
Upper limit of thermostat set point
Define the temperature range limit of the controller.
Once set, the desired temperatue (set point) can not go above "HSE" or
below "LSE".
"LSE"
Min. -100.0°C
Max. 200°C
Default -35.0°C
Lower limit of thermostat set point
Define the temperature range limit of the controller.
Once set, the desired temperatue (set point) can not go below "LSE".
"iCi"
Min. no
Max. yes
Default no
Initial cut in
This parameter is to set the refrigeration system action when cab air temperature is between cut-in and cut-out at power up.
yES : Switch on the refrigeration system immediately.
no: Keep the refrigeration system off until cab air temp reaches cut in temperature.
FAn Fan settings
"FCt"
Default FAo
Fan control method
"FAo": fan always on
"SEt": fan follow compressor by manual settings. (FoC and FSC needs to be set accordingly)
"Aut": automatical fan control
"Fod"
Min. 0 s
Max. 240 s
Default 0 s
Fan ON Delay/Fod
Fod defines the fan delay (in seconds) after a compressor cut-in.
Fan Stop Delay/FSd
"FSd" defines the fan delay after a compressor cut-out.
If both "Fod" and "FSd" are set to zero then the fan runs whenever the
compressor runs.
"FSd"
Min. 0 s
Max. 240 s
Default 0 s
"FoC"
Min. 0 s
Max. 960 s
Default 0 s
Fan ON Cycle/FoC
Fan Stop Cycle/FSC
When the compressor is OFF, and "FoC" or "FSC" are not zero, the fan
runs in cycles according to "FoC" and "FSC".
Example: "FoC=120" [sec] and "FSC=120" [sec] means that the fan runs
for half the time when the compressor is OFF. When the compressor is
on, the fan is always ON (according to "FAo" and "Fod").
"FSC"
Min. 0 s
Max. 960 s
Default 0 s
"FSt"
Min. 0 s
Max. 960 s
Default 10 s
Fan Minimum Stop time
Minimum stop time for fan protection.
"FdC"
Min. -10.0 K
Max. 10.0 K
Default 0.0 K
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.
Menu/functions
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"Fdt"
Min. 0 s
Max. 999 s
Default 0 s
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 Source 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. During this period compressor will run at maximum speed
and stop defrost cycles until the desired temperature (PLt) is
reached or pull down duration (Pdd) expires. 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
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 normal defrost interval settings.
"Pdd"
Min. 0 hour
Max. 48 hour
Default 24 hour
Pull Down Duration
Maximum time for pull down. If time expires pull down will stop, regardless of temperature.
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"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".
"PAd"
Min. 0 min
Max. 999 min
Default 30 min
Pull down duration after defrost
Special pulldown duration after every defrost for faster cooling of the cabinet. During this period compressor will run at maxi-
mum speed. If configured“0”this feature is disabled.
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
Adaptive defrost
"no": defrost controlled by time.
"yES": automatic defrost control activated.
"dtt"
Min. 0.0°C
Max. 25.0°C
Default 6.0°C
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.
"drt"
Min. 0.0°C
Max. 200.0°C
Default 5.0°C
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 and between minimum and maximum defrost interval, it is assumed that the evaporator is free of ice and
the defrost counter will be cleared.
"dii"
Min. 1 hour
Max. 96 hour
Default 6 hour
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 evapo-
rator 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
Maximum Interval
Defines the maximum time period between the start of two defrost cycles.
"dit"
Min. 0 min
Max. 240 min
Default 5 min
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
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.
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"dot"
Min. 0 min
Max. 60 min
Default 0 min
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. Drip off time is generally configured to ensure there is no water droplet on the evaporator
coil before stating the cooling cycle.
"Fdd"
Min. 0 s
Max. 600 s
Default 0 s
Fan Delay after Defrost
Defines how long the delay is between the start of the compressor after defrostand the fan starting again.
"Ftd"
Min. -25.0°C
Max. 25.0°C
Default 25.0°C
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.
"dFA"
Min. no
Max. yes
Default no
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.
"dCt"
Min. no
Max. yes
Default no
Defrost on compressor run time
Yes: Defrost interval is based on accumulated compressor run time.
No: Defrost interval is based on elapsed time.
"doC"
Min. 0 hour
Max. 24 hour
Default 0 hour
Defrost by continuous compressor running time.
If compressor is running continuously more than this time, controller will trigger the defrost, this is an safety feature to ensure
continuous compressor running is not due to clogged evaporator.
"0"= Feature deactivated
"dEt"
Min. -50.0°C
Max. 0.0°C
Default -50.0°C
Defrost start evaporator temp
Defrost will get triggered at this temperature after expiry of minimum defrost interval "dii".
"ddt"
Min. 0.0 K
Max. 30.0 K
Default 5.0 K
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"
"idi"
Min. 0 hour
Max. 96 hour
Default 3 hour
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.
User Guide | ERC 112D VSC Refrigeration Controller
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 13

CoP Compressor settings
"CSL"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Min speed
Minimum operating speed of variable speed compressor. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CSH"
Min. 50 rpm
Max. 500 rpm
Default 450 rpm
Max speed
Maximum operating speed of variable speed compressor. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CSS"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Start speed
Start speed is the speed at compressor must start before changing to the requested speed to ensure the proper lubrication.
The actual rpm is multiplied by 10 to the selected value, hence read actual rpm=value*10.
"HdS"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Hot gas Defrost Speed
Required compressor speed during hot gas defrost. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CtP"
Min. 0 %
Max. 100 %
Default 100 %
Cabinet Temperature Percentage
If compressor is controlled based on the weighted average temperature of cabinet air and evaporator sensors, this parameter
defines the percentage of cabinet air temperature to be considered for the calculation of weighted average temperature.
For example, CtP= 40% , SCo=5°C and EuA =3°C. Weighted average temperature = 0.4 x 5 + 0.6 x 3 = 3.8°C
"SSS"
Min. 0 rpm
Max. 150 rpm
Default 25 rpm
Step size
In order to achieve lower start and stop noise compressor is made to start at certain speed and then ramp up / ramp down to
the desired speed. This is the rate at which compressor must ramp up and ramp down from start and stop speed. Ramp up and
ramp down rate to ensure smooth start and stop of compressor and reduce compressor noise during start and stop. The actual
rpm is multiplied by 10 to the selected value, hence read actual rpm=value*10.
"CoF"
Min. 10 Hz
Max. 200 Hz
Default 50 Hz
Off frequency
This is required frequency from the controller to give stop signal to the compressor. Any frequency below this is considered as
stop frequency.
"uFL"
Min. 10 Hz
Max. 200 Hz
Default 66 Hz
Minimum Frequency
Required input frequency from the controller corresponding to minimum speed of the compressor
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"uFH"
Min. 10 Hz
Max. 200 Hz
Default 150 Hz
Maximum frequency
Required Input frequency from the controller corresponding to Maximum speed of the compressor
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"uLF"
Min. 1
Max. 100
Default 30
Multiplication factor
Multiplication factor used in the compressor to calculate the required speed based on the received frequency signal
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"PPF"
Min. 0
Max. 100
Default 50
Proportional Gain(Kp)
Propotional gain to be used in the PI controller Proportional gain value to be defined based on the required capacity adaptation
speed
"PIF"
Min. 0
Max. 100
Default 3
Integral Gain( Ki)
Integral gain to be used in the PI controller, Integral gain value to be defined based on the required capacity adaptation speed.
"PcI"
Min. 0
Max. 999
Default 100
Integral Time constant(Ti)
Integral time constant to be used in the PI controller, Integral Time Constant value to be defined based on the required capacity
adaptation speed
"EHd"
Default no
Sensor Error handling Type
Method to handle the refrigeration system in case of cabinet sensor error.
"no": no sensor error handling.
"SEt": Run the refrigeration system based on error run/stop time.
User Guide | ERC 112D VSC Refrigeration Controller
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"EoF"
Min. 0 Hz
Max. 200 Hz
Default 100 Hz
Frequency during Sensor error
Frequency at which compressor must run during cab air sensor error. In case of cab air sensor error controller will send this
frequency to compressor drive during Error run time "Ert". and during error stop time it will send the Off frequency "CoF"
"Ert"
Min. 0 min
Max. 60 min
Default 5 min
Error Run Time
This parameter only become active in the unlikely event of cabinet air sensor error. Ert define the duration the refrigeration
system will run during cab air sensor error.
Example: "Ert=4" [min] and "ESt=16" [min] will provide an average cooling system activity of 20%. Ert and "ESt" values must be
configured based on OEM experience
"ESt"
Min. 0 min
Max. 60 min
Default 5 min
Error Stop Time
This parameter only become active in the unlikely event of cabinet air sensor error. ESt define the duration the refrigeration
system will stop during cab air sensor error
"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.
"uSt"
Min. 0 sec
Max. 30 sec
Default 1 sec
Minimum On time at Start Speed
Minimum time the compressor must run at start speed
"Cdd"
Min. 0 min
Max. 15 min
Default 15 min
Compressor Door Open Delay/Cdd
This parameter sets the delay in minutes before the compressor stop frequency signal
when the door is opened. If set to 15, the function is disabled.
"Srt"
Min. 0 min
Max. 60 min
Default 0 min
System resume after door open
Fan and Compressor resume after cut out by door open.
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
Condenser Block Limit/CbL
This parameter sets the temperature which if reached will cause the
compressor to switch OFF.
"CoL"
Min. 0°C
Max. 200°C
Default 60°C
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 112D VSC Refrigeration Controller
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 15

"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
Display intensity auto control
"no": display intensity use fixed value.
"din"
Min. 2
Max. 10
Default 10
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
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.
"trS"
Default SCo
Temp sensor to display
"SCo": temperature control.
"EuA": evaporator temperture.
"Con": condenser temperature (condenser cleaning).
"AtP" Weighted average temperature of "SCo" and "EuA"
"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.
User Guide | ERC 112D VSC Refrigeration Controller
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"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.
"SEC"
Min. no
Max. yes
Default no
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.
"SSC"
Min. no
Max. yes
Default no
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.
"SHo"
Min. no
Max. yes
Default no
Show Holiday
"no": display will show temperature or ECO mode during holiday mode.
"yES": display will show "HoL" during holiday mode.
"SdF"
Min. no
Max. yes
Default yes
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.
"SCS"
Min. no
Max. yes
Default yes
Show compressor symbol
"no": compressor symbol will not show on display.
"yES": show compressor symbol on display.
"SFS"
Min. no
Max. yes
Default yes
Show Fan symbol
"no": san symbol will not show on display.
"yES": show fan symbol on display.
"SdS"
Min. no
Max. yes
Default yes
Show Defrost symbol
"no": defrost symbol will not show on display.
"yES": show defrost symbol on display.
"SES"
Min. no
Max. yes
Default yes
Show ECO symbol
"no": ECO symbol will not show on display.
"yES": show ECO symbol on display.
ALA Alarm settings
"HAt"
Min. -100.0°C
Max. 200°C
Default 15.0°C
High Temp Alarm
Absolute value.
By setting "HAt" to the maximum alarms will be deactivated.
"LAt"
Min. -100.0°C
Max. 200°C
Default -50.0°C
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.
"Htd"
Min. 0 min
Max. 240 min
Default 30 min
Alarm delay on high temperature alarm
The number of minutes to wait before sounding an alarm once the
high temperature alarm temperature is reached.
User Guide | ERC 112D VSC Refrigeration Controller
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 17

"Ltd"
Min. 0 min
Max. 240 min
Default 0 min
Alarm delay on low temperature alarm
The number of minutes to wait before sounding an alarm once the
low temperature alarm temperature is reached.
"Pdd"
Min. 0 min
Max. 960 min
Default 240 min
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".
"dod"
Min. 0 min
Max. 60 min
Default 2 min
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.
"LEA"
Min. 0 hour
Max. 96 hour
Default 0 hour
Leakage alarm
Leakage detection for compressor protection. If compressor operates for more than the set time, an alarm will be triggered.
"0": disable
"Abd"
Min. 0 min
Max. 999 min
Default 0 min
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.
"ACA"
Min. no
Max. yes
Default yes
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.
This feature requires:
A) that your appliance is exposed to ambient temperatures
below the desired temperature in your cabinet
(e.g. very cold climates and outdoor use).
B) a special heater (for example a large defrost heater) built in
to your appliance.
"AuH"
Min. no
Max. yes
Default no
Automatic Heater Mode Enable
This setting is normally set to "no".
When set to "yES", parameters "End" and "Hdi" apply.
User Guide | ERC 112D VSC Refrigeration Controller
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"End"
Min. 0 min
Max. 360 min
Default 60 min
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.
"AHS"
Min. -100.0°C
Max. 200.0°C
Default 2.0°C
Auto Heat set point
Set point of auto heating.
"AHd"
Min. 0.0 K
Max. 20.0 K
Default 2.0 K
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 test-
ing and adjusting "SLd" and "SLn" values according to customers’ specific needs.
"ECo"
Min. no
Max. yes
Default Yes
ECO ON/OFF
ECO active or not. If no all other settings are not active.
"EdA"
Min. 1
Max. 10
Default 1
Door Actions
Times of door action to trigger exiting ECO
"EPA"
Min. 1
Max. 10
Default 1
Pir Actions
Times of "PIR" action to trigger exiting ECO
"ECt"
Min. 0 min
Max. 180 min
Default 30 min
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.
"Edd"
Min. 0 min
Max. 180 min
Default 180 min
Door delay
Door delay after door close to trigger entering ECO
"EPd"
Min. 0 min
Max. 180 min
Default 120 min
Pir delay
"PIR" delay to trigger entering ECO
"SLd"
Min. 0
Max. 80
Default 5
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).
"SLn"
Min. 0
Max. 80
Default 3
"tto"
Min. 0 hour
Max. 168 hour
Default 0 hour
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.
"LSd"
Min. 0 min
Max. 180 min
Default 0 min
Light Source delay on ECO
Time delay for light source to change from serving mode source to ECO mode source.
User Guide | ERC 112D VSC Refrigeration Controller
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 19

"Euu"
Min. no
Max. yes
Default yes
EWU active on/OFF
Enable or disable early wake up.
"CLH"
Min. 0 hour
Max. 24 hour
Default 6 hour
Shop close hour
Shop is assumed to be closed when staying in ECO mode longer than shop close hour.
"ErL"
Min. 0 min
Max. 240 min
Default 120 min
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."
"HoL"
Min. 0 hour
Max. 999 hour
Default 72 hour
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
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.
"Hto"
Min. -25.0 K
Max. 25.0 K
Default 6.0 K
Holiday Temperature Offset
Increase or decrease of temperature with respect to normal mode
during holiday mode.
"diE"
Min. 0.0 K
Max. 10.0 K
Default 2.0 K
ECO Differential
Thermostat differential for ECO.
"FoE"
Min. 0 s
Max. 960 s
Default 0 s
ECO Fan on cycle
On time for fan during compressor OFF period in ECO mode.
"FSE"
Min. 0 s
Max. 960 s
Default 0 s
ECO Fan stop cycle
OFF time for fan during compressor OFF period in ECO mode.
"ELC"
Default on
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
MODBUS Safety
"no": MODBUS auto detection is enable and serial communication is available for configuration software tool.
"yES": MODBUS communication is deactivated.
User Guide | ERC 112D VSC Refrigeration Controller
20 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07