1. Introducció
The Mypin LM8-IRRD is an advanced weighing controller designed for precise measurement and control in various industrial applications. It features a clear digital display, multiple alarm outputs, and compatibility with 1-4 load cells, making it suitable for platform scales, batching systems, and automated filling processes. This manual provides essential information for the installation, operation, and maintenance of your LM8-IRRD controller.
2. Producte acabatview
The LM8-IRRD weighing controller is a compact and robust device featuring a dual digital display for Process Value (PV) and Set Value (SV), along with alarm indicators and unit displays. Its intuitive button interface allows for easy configuration and operation.
Disseny del panell frontal

- VA (Valor del Procés): Top display, shows the current measured weight.
- SV (Valor definit): Bottom display, shows the target weight or alarm threshold.
- AL1, AL2, AL3: Llums indicadores d'alarma.
- T: Tare indicator.
- Kg, g: Weight unit indicators (Kilograms, grams).
- Botó SET: S'utilitza per entrar al mode de configuració de paràmetres i confirmar les seleccions.
- <</RST Button: Used for shifting digits during setting or resetting functions.
- Botó de fletxa amunt: Used to increase values or navigate menu options.
- Botó de fletxa avall: Used to decrease values or navigate menu options.
3. Especificacions
The following table details the technical specifications of the Mypin LM8-IRRD Weighing Controller:

| Paràmetre | Especificació |
|---|---|
| Nom del producte | LM Series Automatic Weighing, Filling, and Batching Controller |
| Model de producte | Sèrie LM8 |
| Dimensions generals | 48 mm (H) x 96 mm (W) x 80 mm (D) |
| Panel Opening Size | 45 mm x 91 mm |
| Pes net | ≤ 0.3 kg |
| Àmbit d'aplicació | Floor scales, cement, food packaging, chemical batching, filling, and other automated control |
| Funció principal | Display weighing value and control it |
| Entrada | mV signal, can connect 1-4 load cells |
| Sortida | 2 RELAY relay outputs |
| Velocitat de resposta | 10 vegades per segon |
| Potència auxiliar | 5V DC |
| Font d'alimentació | 110 / 220V CA. |
| Total Machine Power Consumption | < 3 W |
| Display Weighing Range | -1999 a 9999 |
4. Configuració
4.1 Instal·lació
The LM8-IRRD controller is designed for panel mounting. Ensure the mounting panel has an opening of 45mm x 91mm. Insert the controller into the opening and secure it using the provided mounting clips on the sides.

4.2 Cablejat
Proper wiring is crucial for the safe and correct operation of the weighing controller. Refer to the wiring diagram typically found on the top label of the device or in a dedicated wiring manual. Ensure all connections are secure and comply with local electrical codes.
- Font d'alimentació: Connect the controller to a 110V or 220V AC power source as indicated on the device.
- Load Cell Input: The controller accepts mV signals and can connect 1 to 4 load cells. Ensure correct polarity and wiring configuration for your specific load cells.
- Sortides de relé: The controller provides 2 RELAY relay outputs for control purposes. Connect these to your external control devices (e.g., valves, motors) according to your application's requirements.
- Sortida 4-20mA: The LM8-IRRD model includes a 4-20mA analog output. Connect this output to compatible devices for analog signal transmission, such as PLCs or data acquisition systems.
Warning: Incorrect wiring can damage the device and pose electrical hazards. If you are unsure, consult a qualified electrician or technician.
5. Instruccions de funcionament
5.1 Funcionament bàsic
- Encès: After ensuring all wiring is correct, apply power to the controller. The display will light up, showing the current Process Value (PV) and Set Value (SV).
- Pesatge: Place the item on the connected scale. The PV display will show the measured weight.
- Funció de tara: To zero out the weight of a container, press the appropriate button (often indicated by 'T' or a similar symbol, or a combination with 'RST' if not a dedicated button) while the container is on the scale. The PV display should reset to zero.
5.2 Setting Parameters (Set Value, Alarms)
The 'SET' button is typically used to enter and navigate the parameter setting menu. The 'Up' and 'Down' arrow buttons adjust values, and the '<</RST' button can be used to shift digits or confirm settings.
- Entra al mode de configuració: Press and hold the 'SET' button for a few seconds until the display changes, indicating entry into the parameter setting mode.
- Paràmetres de navegació: Use the 'SET' button to cycle through different parameters (e.g., SV1, SV2 for set points, alarm thresholds, unit selection, calibration settings).
- Ajusta els valors: When a desired parameter is displayed, use the 'Up' and 'Down' arrow buttons to adjust its value. Use the '<</RST' button to move the cursor between digits for precise input.
- Desa la configuració: After adjusting a parameter, press 'SET' again to move to the next parameter or to save and exit the setting mode (often by holding 'SET' or waiting for a timeout).
5.3 Calibració
Calibration is essential for accurate weighing. The specific calibration procedure will vary but generally involves:
- Entering calibration mode (usually a specific key combination or menu option).
- Zero-point calibration (with no load on the scale).
- Span calibration (using a known reference weight).
- Exiting and saving calibration settings.
Refer to the detailed calibration instructions provided with your specific model or consult the manufacturer's technical support for precise steps.
6. Manteniment
- Neteja: Keep the controller's front panel clean using a soft, dry cloth. Avoid abrasive cleaners or solvents that could damage the display or casing.
- Condicions ambientals: Ensure the controller operates within its specified environmental conditions (temperature, humidity) to prevent malfunction.
- Connexions: Comproveu periòdicament totes les connexions del cablejat per comprovar si estan ben ajustades i si hi ha signes de corrosió o danys.
- Recalibració: Recalibrate the weighing controller periodically or if you suspect inaccuracies, especially after significant environmental changes or prolonged use.
7. Solució De Problemes
This section provides basic troubleshooting steps for common issues. For more complex problems, contact technical support.
| Problema | Causa possible | Solució |
|---|---|---|
| La pantalla està en blanc | No power, incorrect wiring, faulty power supply. | Comproveu les connexions d'alimentació i assegureu-vos que el volum sigui correctetage, test power supply. |
| Lectures de pes inexactes | Needs calibration, faulty load cell, environmental interference. | Perform calibration, check load cell wiring and function, minimize vibrations or drafts. |
| Alarms not triggering | Set values incorrect, alarm output wiring issue, alarm function disabled. | Verify SV settings, check relay output connections, ensure alarm function is enabled in parameters. |
| Els botons no responen | Keypad malfunction, device frozen. | Try power cycling the device. If issue persists, contact support. |
8. Consells d'usuari
- Always ensure the load cell is properly installed and secured to the platform for stable readings.
- Regularly check the 4-20mA output signal with a multimeter to ensure it is functioning correctly, especially if integrating with other control systems.
- Keep a record of your calibration dates and any adjustments made to parameters for future reference.
9. Garantia i Suport
Per obtenir informació sobre la garantia, assistència tècnica o consultes sobre el servei tècnic, consulteu la documentació proporcionada en el moment de la compra o poseu-vos en contacte amb el vostre venedor. Conserveu el rebut de compra com a comprovant de compra.





