Danfoss ERC 112 Bottle Cooler Controller

Technical Specification

Model: ERC 112

Power Supply: 100-240 V AC Switch mode power supply. Average 0.7 W

Input: 5 inputs: 4 analogue (digital), 1 digital; user specific assignment

• Air/Evaporator / Condenser
• Light sensor: Danfoss ECO light sensor
• "DO1" (Compressor relay)
• Door sensor: all types, user specific
• Motion sensor

Output:

• "DO4": 120 V AC: 16 A resistive / FLA 16/LRA 72; 240 V AC: 10 A resistive / FLA 10/LRA 60
• "DO5": 8 A resistive, FLA 2/LRA 12, TV-1
• "DO6": 8 A resistive, 2(2) A FLA 2/LRA 12. TV-1
• Max 10 A total "DO4-6"

Probes: Danfoss NTC sensors and Danfoss ECO accessories, Danfoss PT1000 ohm/0°C

Connectors: Modular connector system for OEM customers, with optional output screw terminal adapter. Input connector type: Rast 2.5 Edge connectors. Output connector type: RAST 5 standard.

Programming: With Danfoss KoolProg, KoolKey and KoolDock

Assembly: 3 types for all controls: front mounting; brackets; fully integrated solution (requires OEM specific design of mounting hole)

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. Pollution degree II, non-condensing.

Environmental Resistance to heat & fire: Category D (UL94-V0). Category I.

Operating Cycles: Compressor relay: more than 175,000 at full load (16A (16A)). 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.

Approvals: NSF, CQC, EAC, Ukraine

Dimensions:

• Front mounting: 78.25 mm x 71 mm
• Rear mounting: 78.25 mm x 71 mm

Wiring Diagram

ERC 112D / ERC 112C

Power Supply: 100-240 V AC ± 10% 50/60 Hz 0T55

Inputs: S1, S2, S3, S4, di

Outputs: DO1, DO2, DO3, DO4, DO5, DO6

Functional description of used sensors

Control temperature 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. Most common placement is in the return air to the evaporator.

Evaporator sensor

The evaporator sensor is only used for de-icing of the evaporator and has no control purpose. Place the sensor where the ice melts last.

Condenser temperature sensor

The condenser sensor is used to protect the compressor against high pressure when the condenser is blocked or the condenser fan fails. 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.

ERC front and button functionality

Configurable functionality

Configuration of outputs

Configuration of inputs

Operation

Changing the setpoint:

Press UP/DOWN to adjust setup. After 30 seconds, the display automatically reverts to showing the current temperature.

Turning ON/OFF the ECO function

Press briefly to enter ECO mode. The green ECO symbol is lit when in ECO mode.

Activating manual defrost

Press briefly to start or stop defrost.

Acknowledging alarm

Press any button to acknowledge. After the acknowledge the temperature is displayed and the alarm symbol remains shown.

Menu structure

1. Parameter group

Press and hold 5 sec to access the menu.

2. Scroll through parameters group

Press: UP/DOWN to scroll through the menu.

3. Parameter name

To select: press the lower left button (OK).

4. Scroll through parameters

Press: UP/DOWN to find the desired parameter.

5. To confirm: press the lower left button (OK)

Scroll through group "dEF" parameters.

6. Press: UP/DOWN to enter the desired value

7. To accept: press the lower left button (OK) and return to parameter name

To exit without accept: press the upper left button (BACK)

To return to menu: press upper left button (BACK)

After 30 seconds of inactivity, the display automatically reverts to showing the current temperature.

Password protection

Password protection on three levels:

• LEVEL 1: shop (daily use by shop personnel)
• LEVEL 2: ser (service technician)
• LEVEL 3: OEM (OEM programming)

Parameter table

The parameter table lists all configurable settings for the ERC 112 controller, organized by function such as Thermostat, Fan, Light, Defrost, Compressor, Display, Alarm, Auto Heater Control, ECO strategy, and Assignment.

Each parameter includes a menu code, parameter name, description, default value, minimum and maximum allowed values, unit of measurement, and the current setting.

Example Parameters:

• Thermostat: Set point (SEt), Differential (diF), High Set point (HSE), Low Set point (LSE)
• Fan: Fan control method (FCt), Fan On Delay (Fod), Fan Stop delay (FSd)
• Defrost: Defrost type (dFt), Defrost terminate temp (dtt), Defrost Min Interval (dii)
• Compressor: Minimum Cutin voltage (uLi), Minimum cut-out voltage (uLo), Min Stop time (CSt)
• Display: Display intensity auto control (diC), Display Unit (CFu), Display Offset (doF)
• Alarm: High Temp Alarm (HAt), Low Temp Alarm (LAt), Door Open delay (dod)
• ECO strategy: ECO on / off (ECo), Door Actions (EdA), PIR Actions (EPA)
• Assignment: Sensor type configuration (S1C, S2C, S3C, S4C), Sensor application (S1A, S2A, S3A, S4A), Digital I/O configuration (diC), Output configuration (o1C, o2C, o3C, o4C), Button configuration (b1C, b2C, b3C, b4C, b5C, b1L, b2L, b3L, b4L, b5L)