Danfoss ERC 112 User Manual
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Danfoss ERC 112 User Manual

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

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Summary of Contents for Danfoss ERC 112

  • Page 1 Electronic Refrigeration Controller ERC 112 This user guide is intended to be used by OEMs for the purpose of programming ERC 112. It may also be useful for technicians. However, it is not intended as a user guide for end users. www.danfoss.com/erc...
  • Page 2 User Guide | ERC 112 Refrigeration Controller Introduction Temperature control for refrigeration appliances. Application Front panel mounting. The latest generation CPU, plenty of memory Advantages 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.

  • Page 3: Typical Application

    User Guide | ERC 112 Refrigeration Controller Typical application Glass Door Merchandiser No-frost freezer/sub-zero cooler S3, S4 are optional S2, S3, S4 are optional Gastro No-frost freezer/Cooler S3, S4 are optional S2, S3, S4 are optional © Danfoss | DCS (vt) | 2019.07...

  • Page 4: Product Overview

    User Guide | ERC 112 Refrigeration Controller Product overview Display 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.

  • Page 5: Quick Programming

    User Guide | ERC 112 Refrigeration Controller Quick programming Software for PC 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/ USB gateway USB gateway The USB Gateway is a laboratory tool, offering fast and easy programming of any ERC controller connected directly to the PC.

  • Page 6: Technical Specs

    FLA2/LRA12, TV-1 8 A resistive, 2(2) A Max 10 A total "DO4-6" Danfoss NTC sensors and Danfoss ECO accessories (Light, Motion and Door sensors) Probes Danfoss Pt 1000 ohm/0°C Modular connector system for OEM customers, with optional output screw terminal adapter;...
  • Page 7 User Guide | ERC 112 Refrigeration Controller Connections ERC 112C (3 relays) (Inputs and outputs are configurable) ERC 112D (4 relays) Note S4 Port can also be used to connect other sensors and Door sensor. © Danfoss | DCS (vt) | 2019.07...

  • Page 8: Code Numbers

    User Guide | ERC 112 Refrigeration Controller Code numbers Type I-Pack Type I-Pack Qty. Code no. Qty. Code no. ERC 112C, Red LED, without 080G3202 -100 – 200 °C, Pt 1000 buzzer S4, 1000 mm, 3-pole 080G3350 ERC 112D, Red LED, without...

  • Page 9: Manual Operation With Buttons (Direct Access)

    User Guide | ERC 112 Refrigeration Controller Operation The controller can be configured in four ways: All these tools are supplied separately. Programming Tools Using: For technical literature and further information, • KoolProg and KoolKey as Gateway please contact your local Danfoss representative.

  • Page 10: Fan Settings

    Min. -100.0°C In standard operation the set point is changed by simply pressing the Max. 200.0°C "temperature up/down" buttons on ERC 112; for laboratory and Default 2.0°C assembly line you may opt for software controlled set point adjustment (speed improvement) "SPr"...
  • Page 11 User Guide | ERC 112 Refrigeration Controller "FSt" Fan Minimum Stop time Minimum stop time for fan protection. Min. 0 s Max. 960 s Default 10 s "FdC" Fan Δt cut in (This parameter is only applicable with Automatic fan control "Aut" mode.) Min.
  • Page 12 User Guide | ERC 112 Refrigeration Controller "Pdi" 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. Min. 0 hour During pull down, this setting overrides the defrost interval and defrost time settings (see the defrost section).
  • Page 13 User Guide | ERC 112 Refrigeration Controller "dot" 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 Min. 0 min OFF and the compressor starting again.

  • Page 14: Compressor Settings

    User Guide | ERC 112 Refrigeration Controller Compressor settings "uPt" Voltage protection "no": no voltage protection. "yES": voltage protection activated based on voltage related settings. Min. no Max. yes Default no "uLi" Minimum cut-in voltage/uLi. Minimum cut-out voltage/uLo. Maximum voltage/uHi Min.
  • Page 15 The controller can have its display intensity (brightness) set in one of Min. 2 two ways: Max. 10 A) With a Danfoss ambient light sensor attached, the brightness of the Default 10 display is adjusted automatically according to the ambient light level (see the assignments section).

  • Page 16: Display Unit

    User Guide | ERC 112 Refrigeration Controller "CFu" Display Unit This parameter sets the display to Fahrenheit or Celsius. Switching from Min. °C one to the other will cause all temperature settings to be automatically Max. °F updated accordingly. Default °C "trS"...
  • Page 17 User Guide | ERC 112 Refrigeration Controller "SdF" Show Defrost If set to "yES", this parameter causes the display to show DEF when the Min. no system is in defrost mode. If set to "nO", the temperature continues to Max. yes be displayed.
  • Page 18 User Guide | ERC 112 Refrigeration Controller "Pdd" Pull down delay Normally, it is not necessary or desirable to sound an alarm during a pull Min. 0 min down (the initial phase of reaching the desired temperature). This Max. 960 min Default 240 min parameter prevents the high temperature alarm "HAt"...
  • Page 19 Default 2.0 K 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"...
  • Page 20 User Guide | ERC 112 Refrigeration Controller "Euu" EWU active on/OFF Enable or disable early wake up. Min. no Max. yes Default yes "CLH" Shop close hour Shop is assumed to be closed when staying in ECO mode longer than shop close hour.
  • Page 21 Please contact your local Danfoss representative for information about default settings. NOTE: coded sensors will impact on the number of possible configurations. For instance: Danfoss supplies only 2-pole defrost sensors, so input "S3" will most likely be used as a defrost/evaporator temperature sensor input. "S1C" S1 Config/S1C...
  • Page 22 User Guide | ERC 112 Refrigeration Controller "diC" DI Config This is the digital input used for a digital sensor or bus communications. Default non "non": not used. "doC": door contact, contact closed when door closed. "doo": door contact, contact open when door closed.
  • Page 23 You may not therefore have access to change all the passwords. Passwords are entered by using the up and down arrow buttons. Min. 0 Max. 999 Danfoss advises against using passwords which are easy to remember Default 0 or enter, for example 111, 222, 123 etc. "PS3"...
  • Page 24 User Guide | ERC 112 Refrigeration Controller "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].

  • Page 25: Troubleshooting

    User Guide | ERC 112 Refrigeration Controller Troubleshooting Problem Probable cause Remedy Compressor does not start Waiting for compressor delay timer Check CoP->CSt Defrost in progress Check CoP ->Pot /Pod Line voltage to compressor too low Check dEF ->dit, dot or too high Check CoP->uLi, uLo, uHi...

  • Page 26: Typical Applications

    User Guide | ERC 112 Refrigeration Controller Typical applications Glass Door Merchandiser, No-frost freezer/sub-zero cooler Note: this is a typical (default) wiring diagram since both inputs (AI/DI’s) and outputs (DO’s) can be assigned differently. Please see "ASi", assignment ERC 112D...
  • Page 27 User Guide | ERC 112 Refrigeration Controller Gastro No-frost freezer ERC 112D Controller Red LED with buzzer 080G3213 Red LED with buzzer 080G3217 Temperature Sensor for Temperature Sensor for Temperature Sensor for Cabinet Temperature Evaporator Temperature Condenser Temperature Door input...

  • Page 28: Application Matrix

    User Guide | ERC 112 Refrigeration Controller Application Matrix ERC 112 Output Input Application ERC type Standard beverage Condenser or Ambient Door or Motion ERC 112C Comp Lamp Control Defrost cooler Light or Motion detection detection Sub-zero beverage Condenser or Ambient...

  • Page 29: Sensor Placement

    User Guide | ERC 112 Refrigeration Controller Sensor placement Control sensor The control sensor must always be connected and is used for controlling the cut-in and cut-out of the compressor according to the set point. The sensor is also used for the displayed temperature.

  • Page 30: Condenser Sensor

    User Guide | ERC 112 Refrigeration Controller Condenser sensor 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.
  • Page 31 User Guide | ERC 112 Refrigeration Controller © Danfoss | DCS (vt) | 2019.07 BC200686422115en-000802 | 31...
  • Page 32 © Danfoss | DCS (vt) | 2019.07 BC200686422115en-000802 | 32...

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