1. Einleitung
This manual provides detailed instructions for the MMUNNA EK-3010 Digital Temperature Controller. This device is designed for precise temperature control in mid to low-temperature cold storage or heating applications. It offers temperature measurement, display, and control functionalities, along with features such as temperature calibration, over-temperature alarms, and sensor failure detection. The controller also includes a one-key recovery function for default parameters and a key lock feature for enhanced security.
The EK-3010 model specifically supports refrigeration and heating functions with a single NTC sensor input.
2. Produktüberschreitungview und Funktionen
2.1 Hauptmerkmale
- Six touch key design for quick parameter setting and easy operation.
- One-key recovery function for preset parameters.
- Temperature calibration capability.
- Over-temperature alarm function.
- Sensor failure alarm function.
- Key lock function to prevent accidental changes.
2.2 Funktionalität
- Single NTC sensor input for cabinet temperature measurement.
- One-way control output for refrigeration or heating equipment.
- Integrated buzzer alarm output.
Bildbeschreibung: Eine nach vorne geneigte view of the MMUNNA Digital Temperature Controller. The device is gray and black with a red digital display showing '29.4'. It features touch buttons labeled 'On Temp', 'Off Temp', 'Up Arrow', 'Down Arrow', and 'OK/Lock'. The model number 'EK-3020' is visible on the front, indicating a similar interface to the EK-3010.
3. Technische Daten
| Parameter | Wert |
|---|---|
| Messbereich | -40°C bis 99°C |
| Controlling Range | -40°C bis 85°C |
| Genauigkeit | -30°C to 50°C: ±0.5°C; Others: ±2°C |
| Auflösung | 0.1 °C / 1 °C |
| Montagegröße | 71mm x 29mm |
| Stromversorgung | 220V ±10% (VAC), 50/60Hz |
| Energieaufnahme | <5 W |
| Refrigeration Output | 10A/220VAC (or 16A/220VAC, directly drives single-phase compressor 1HP) |
| Arbeitsumgebungstemperatur | -5°C bis 60°C |
| Work Ambient Humidity | 10 % bis 90 % nicht kondensierend |
| Lagertemperatur | -25°C bis 75°C |
| Sensortyp | NTC (10kΩ/25°C, B value 3435K) |
| Sensorlänge | 2 Meter |
Bildbeschreibung: A graphic illustrating the temperature control range of the MMUNNA Digital Temperature Controller. It shows a range from -40°C to 85°C for control and -40°C to 99°C for measurement, depicted with a circular gradient scale.
Bildbeschreibung: Eine Seite view of the MMUNNA Digital Temperature Controller, showing its physical dimensions. The width is indicated as 85mm and the height as 35mm. The image helps in understanding the mounting requirements.
4. Installation und Verkabelung
Wichtiger Sicherheitshinweis: Always ensure the power supply is disconnected before performing any installation or wiring to prevent electric shock. All electrical work should be carried out by a qualified professional.
The controller is designed for panel mounting. Ensure the mounting hole dimensions are 71mm x 29mm to properly secure the device.
4.1 Wiring Diagram for EK-3010
Bildbeschreibung: This image displays the wiring diagram for the MMUNNA EK-3010 Digital Temperature Controller. It illustrates six terminals. Terminals 1 and 2 are designated for the compressor (Comp.) output, connected to the Live (L) and Neutral (N) lines. Terminals 3 and 4 are for the 220V power supply (L and N). Terminals 5 and 6 are for the NTC sensor (Pb1). A note indicates a 10A fuse for the compressor output.
- Terminals 1 & 2 (Output): Connect these terminals to your refrigeration or heating equipment (e.g., compressor). Ensure the connected load does not exceed the specified output capacity of 10A/220VAC (or 16A/220VAC for a 1HP compressor).
- Klemmen 3 und 4 (Stromeingang): Connect these terminals to your 220V AC, 50/60Hz power supply.
- Terminals 5 & 6 (Sensor Input): Connect the NTC temperature sensor to these terminals.
5. Bedienung
5.1 Anzeigeschnittstelle
Bildbeschreibung: This image shows the front panel of the MMUNNA EK-3020 Digital Temperature Controller, which has a similar interface to the EK-3010. It features a large red LED display in the center. On the left, there are 'On Temp' and 'Off Temp' buttons. On the right, there are 'Up' and 'Down' arrow buttons, and an 'OK/Lock' button. A black NTC sensor with a 2-meter cable is shown below the controller.
The controller features a large LCD screen for clear data display and responsive touch keys for adjustments.
5.2 Schlüsselfunktionen
- Pfeiltaste nach oben: Used to increase numerical values or navigate upwards through menu options.
- Pfeiltaste nach unten: Used to decrease numerical values or navigate downwards through menu options.
- OK / Lock Key: Confirms selected settings or parameters. This key also functions to lock and unlock the keypad.
5.3 Einstellen von Temperatur und Parametern
To set the desired temperature and other operational parameters, refer to the detailed programming guide provided with your controller. The six touch keys allow for quick and intuitive parameter adjustments.
5.4 Tastensperrfunktion
The controller includes a key lock function to prevent unintended changes to settings. To activate or deactivate this feature, press and hold the OK/Lock key for a few seconds. Refer to the full programming manual for specific instructions on using the key lock.
6. Wartung
- Reinigung: Regularly clean the controller's surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or excessive moisture, as these can damage the device.
- Sensorinspektion: Periodically inspect the NTC sensor cable for any signs of damage, kinks, or wear. A damaged sensor can lead to inaccurate temperature readings.
- Verbindungsprüfung: Ensure all wiring connections remain secure and free from corrosion. Loose connections can affect performance and safety.
- Umgebungsbedingungen: Do not expose the controller to environments with excessive moisture, dust, or temperatures outside its specified operating range (-5°C to 60°C).
7. Fehlerbehebung
7.1 Häufige Probleme und Lösungen
- Temperature Over-Temperature Alarm:
- Ursache: The measured temperature has exceeded the configured high-temperature alarm limit.
- Lösung: Verify the conditions of the controlled environment. Adjust the temperature set points or alarm limits if necessary. Ensure that the cooling or heating equipment is functioning correctly.
- Sensorausfallalarm:
- Ursache: The NTC temperature sensor is faulty, disconnected, or has a short circuit.
- Lösung: Inspect the sensor cable for any physical damage. Confirm that the sensor is properly connected to terminals 5 and 6. If damage is found or connections are secure but the alarm persists, replace the sensor.
- Controller lässt sich nicht einschalten:
- Ursache: No power supply or incorrect wiring to the power input.
- Lösung: Check that the 220V AC power supply is active and correctly connected to terminals 3 and 4 of the controller.
- Tastatur reagiert nicht:
- Ursache: The keypad lock function is currently active.
- Lösung: Press and hold the OK/Lock key for a few seconds to unlock the keypad. Refer to the programming manual for specific unlock procedures if needed.
8. Garantie und Support
Specific warranty information is not provided in the product description. For any warranty claims, technical assistance, or support inquiries, please contact your retailer or the manufacturer, MMUNNA, directly. It is recommended to retain your purchase receipt as proof of purchase.