MYPIN LM8-RRD Load Cell Indicator User Manual

1. Introduktion

The MYPIN LM8-RRD is a digital weight controller designed to work with various pressure and weight sensors. It is suitable for applications requiring weight control, auto accumulation, and mean calculations for up/down batch control. This weighing controller features dual LED nixie tube digits for clear display and offers data/peak value holding functions. It also includes capabilities for clearing zero and PV modification. The instrument provides isolated auxiliary power (typically 5V/80mA) to directly connect 1-4 load cells.

2. Produktet er slutview

Figur 2.1: Forside view of the MYPIN LM8-RRD Load Cell Indicator. It features a clear dual LED display for process value (PV) and set value (SV), along with alarm indicators (AL1, AL2, AL3) and unit indicators (g, T, Kg).

3. Specifikationer

Figure 3.1: Model and Specification Options. This table details various configurations for MYPIN load cell controllers, including dimensions, power supply, analog output, alarm outputs (AL1, AL2, AL3), communication interfaces, auxiliary power, and input signal types.

4. Opsætning

Figur 4.1: Bagside view of the MYPIN LM8-RRD Load Cell Indicator. This image shows the wiring terminals and important caution notes. The input is for 1-4 PCS LOAD CELL, with an accuracy of 0.2%F.S±2d. Power is 220V/110V AC. The wiring diagram indicates connections for AC 220V/110V, AL1, AL2, COM, and LOAD CELL (EXC+5V, SG, mV+, mV-).

Figur 4.2: Detaljeret view of the terminal block, showing numbered connections for wiring.

4.1. Ledningsinstruktioner

The MYPIN LM8-RRD Load Cell Indicator requires careful wiring for proper operation. Refer to the diagram on the back of the unit (Figure 4.1) for specific connections.

• Strømforsyning: Connect AC 220V or 110V to the 'L' and 'N' terminals as indicated.
• Vejecelleforbindelse: The unit supports 1-4 load cells. Connect the load cell wires to the 'EXC+5V', 'SG', 'mV+', and 'mV-' terminals. Ensure correct polarity.
• Alarmudgange: The 'AL1', 'AL2', and 'COM' terminals are for connecting external alarm devices or relays. The unit provides 2 relay outputs.

4.2. Important Safety and Installation Cautions

• Forebyggelse af elektrisk stød: Do not remove the cover. There are no user-serviceable parts inside. Refer all servicing to qualified service personnel.
• Miljøforhold: Avoid installing the controller in environments with heavy dust or metal filings, as this may cause damage.
• Interferens: Do not install the unit near power supplies, heavy load equipment, or strong magnetic fields.
• Kabelføring: Avoid running power cables in parallel with high voltage, heavy current-carrying conductors, as this may induce high voltages into the unit. If parallel routing is unavoidable, ensure power cables are properly shielded and grounded, or run them inside a metal conduit grounded at one end only.
• Støjfiltrering: In extremely noisy environments, use a noise filter on the power line.
• Meddelelse: If connecting to a computer, use a serial port connection.

5. Betjeningsvejledning

The MYPIN LM8-RRD Load Cell Indicator features dual LED displays for Process Value (PV) and Set Value (SV). The front panel includes 'SET', '<<RST', 'Up Arrow', and 'Down Arrow' buttons for configuration and operation.

5.1. Nøglefunktioner

• Vægtkontrol: For precise measurement and control of weight.
• Auto Accumulation: Automatically sums up measured values.
• Mean Calculation: Calculates the average of measured values for batch control.
• Data/Peak Value Holding: Allows users to hold the current data or the peak value recorded.
• Clearing Zero: Nulstiller displayet.
• PV Modification: Allows adjustment of the process value.

Refer to the detailed user manual included in the package for specific programming and calibration instructions.

6. Vedligeholdelse

To ensure optimal performance and longevity of your MYPIN LM8-RRD Load Cell Indicator, observe the following maintenance guidelines:

• Rensning: Keep the device clean and free from dust and metal filings. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
• Miljø: Reiterate avoiding installation near strong magnetic fields, power supplies, or heavy load equipment.
• Forbindelser: Regularly check all wiring connections for security and integrity. Loose connections can lead to erratic readings or device malfunction.
• Elektrisk støj: If operating in a noisy electrical environment, ensure that noise filters are properly installed and functioning on the power line, and that the system is correctly grounded.

7. Fejlfinding

If you encounter issues with your MYPIN LM8-RRD Load Cell Indicator, consider the following steps:

• Erratic/Incorrect Readings: Verify all load cell connections and ensure they are securely fastened. Check for any damage to the load cell or its wiring.
• Ingen skærm/Reagerer ikke: Ensure the device is receiving power and that the power supply voltage matches the device's requirements (110V/220V AC). Check for any visible damage to the unit or power cable.
• Kalibreringsproblemer: If readings are consistently off, recalibration may be necessary. Refer to the detailed user manual for calibration procedures.

For complex issues that cannot be resolved with these steps, refer to the comprehensive user manual or contact technical support.

8. Brugertips

• The LM8-RRD indicator is designed to work with analog sensors, specifically mV (Load Cell) inputs. Ensure your load cells are compatible with this input type for proper functionality.

9. Pakkens indhold

The MYPIN LM8-RRD Load Cell Indicator package includes:

• 1 x Weighing Controller (LM8-RRD)
• 2 x monteringsbeslag
• 1 x brugermanual

10. Garanti og support

The MYPIN LM8-RRD Load Cell Indicator comes with a 1-year warranty. For customized support or technical assistance, please refer to the contact information provided in the full user manual or on the manufacturer's webwebsted.