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
User Guide | ERC 112D VSC Refrigeration Controller
2 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07

Typical application
Glass Door Merchandiser
No-frost freezer/sub-zero cooler
Gastro
No-frost freezer/Cooler
User Guide | ERC 112D VSC Refrigeration Controller
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 3

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
User Guide | ERC 112D VSC Refrigeration Controller
4 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07

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
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 5

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)
User Guide | ERC 112D VSC Refrigeration Controller
6 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07

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
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 7

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".
User Guide | ERC 112D VSC Refrigeration Controller
8 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07

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
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 9

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
User Guide | ERC 112D VSC Refrigeration Controller
10 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07