1. Introduction
The MYPIN LH Series LH86-VRRD is a high-precision digital weight controller and indicator designed for various industrial weighing applications. It features a 6-digit LED display for clear readings and offers multiple control and communication options. This manual provides essential information for the proper installation, operation, and maintenance of your device.
Figure 1: Front view of the MYPIN LH86-VRRD Digital Weight Controller
2. Specifications
The LH86-VRRD model offers robust features for precise weight measurement and control:
- Item Type: Microphone Amplifier (Note: This appears to be a misclassification in product data, the device functions as a Weighing Indicator/Controller)
- Brand Name: AEVYVKV (also known as MYPIN)
- Model Number: LH86-VRRD
- Display Type: 6 digits LED display
- Color: Black
- Material: ABS Plastic
- Size: 48*96*80mm
- Power Supply: 18-30V AC/DC or 90-260V AC/DC
- Consumption: <5VA
- Accuracy: 0.05% ±1 digit, 1g/10000g
- Sampling Speed: 16-128 times/sec
- Input Type: 1-4 PCS loadcells (5V/80mA)
- Alarm Output: RELAY: Normal open contact 250V 3A OR 30V 3A, resistive load, SSR: 12V/24V, 30mA
- Transmit Output: DC 4-20mA or 0-10V
- Communication: RS485, RS232, LAN (RJ45) with MODBUS-RTU protocol
Figure 2: Detailed Technical Specifications
Figure 3: Ordering Code Options
3. Setup and Installation
Proper installation is crucial for the accurate and safe operation of the weight controller. Ensure all power is disconnected before proceeding with any wiring.
3.1 Physical Installation
The device has dimensions of W96*H48*L80mm. It is designed for panel mounting. Ensure adequate space for ventilation and access to wiring terminals.
Figure 4: Device Dimensions and Load Cell Mounting Example
3.2 Electrical Connections
A detailed wiring diagram is essential for correct electrical connections. Please refer to the diagram provided with your product packaging or official documentation. Below is a textual description of typical connections for the LH86-VRRD model:
- Power Supply: Connect the appropriate AC/DC power (90-260V or 18-30V) to the designated power terminals (typically labeled 23 and 24).
- Load Cell Input: The device supports 1-4 load cells. Connect the load cell excitation and signal wires to the corresponding terminals:
- EXC+ (Excitation Positive)
- EXC- (Excitation Negative)
- SG+ (Signal Positive)
- SG- (Signal Negative)
- Alarm Outputs (AL1, AL2): Connect external alarm devices or relays to the alarm output terminals (e.g., 20, 21, 22). These are multi-function Relay/SSR controls.
- Transmit Output (OUT 0-10V): For analog signal output, connect to the 0-10V transmit output terminals (e.g., 16, 17, 18, 19).
- RST/TARE Control: Connect external buttons or control signals for Reset (RST) and Tare (TARE) functions to their respective terminals (e.g., 9, 10).
- Communication Interface: If using RS485, RS232, or LAN (RJ45) for data communication, connect to the appropriate communication ports. The device supports MODBUS-RTU protocol.
Warning: Incorrect wiring can damage the device and pose safety risks. Always consult the specific wiring diagram for your model and ensure power is off during installation.
4. Operation
The MYPIN LH86-VRRD is designed for user-friendly operation with its clear 6-digit LED display and intuitive controls.
4.1 Basic Functions
- Weight Indication: The primary 6-digit LED display (PV) shows the current weight measured by the connected load cells.
- Set Value (SV): The secondary display (SV) shows the set point or other configurable parameters.
- START/STOP Control: Use the designated buttons (e.g., 'SET' or 'RST' in combination with other keys) to initiate or halt weighing processes or control sequences.
- Clear TARE Control: The TARE function allows you to zero out the weight of a container or platform, so only the net weight of the item is measured. Use the dedicated TARE button or combination.
- Data/Peak Value Holding: This optional function allows the device to hold the current weight reading or the peak weight detected during a measurement cycle. Refer to the programming section for activation and configuration.
4.2 Programming and Configuration
The device offers various programmable parameters for calibration, alarm settings, output control, and communication protocols. Access the programming menu by pressing and holding the 'SET' button. Navigate through parameters using the arrow keys and confirm changes with 'SET' or 'RST'. Consult the detailed programming guide for specific parameter definitions and adjustment procedures.
Video 1: Product Overview and Basic Operation
5. Maintenance
Regular maintenance ensures the longevity and accuracy of your MYPIN LH86-VRRD weight controller.
- Cleaning: Keep the device clean and free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning. Avoid abrasive cleaners or solvents.
- Environmental Conditions: Operate the device within its specified temperature and humidity ranges. Protect it from direct sunlight, excessive vibrations, and strong electromagnetic interference.
- Connections: Periodically check all electrical connections for tightness and signs of corrosion. Ensure load cell cables are not damaged or pinched.
- Calibration: For sustained accuracy, periodic calibration of the load cell system with the controller is recommended. Refer to the calibration section in the full user manual for detailed steps.
6. Troubleshooting
If you encounter issues with your weight controller, try the following basic troubleshooting steps:
- No Display/Power: Check the power supply connections and ensure the correct voltage is applied. Verify the power source is active.
- Inaccurate Readings:
- Check load cell connections for proper wiring and secure contact.
- Ensure the load cell is not overloaded or damaged.
- Verify that the load cell is correctly installed and free from obstructions.
- Perform a calibration procedure.
- No Output/Control:
- Check the wiring for alarm and transmit outputs.
- Verify that the alarm set points and output configurations are correctly programmed.
- Ensure external devices connected to outputs are functioning correctly.
- Communication Errors:
- Check the physical connections for RS485, RS232, or LAN.
- Verify communication parameters (baud rate, data bits, parity, stop bits) match between the controller and the connected device.
- Ensure the correct communication protocol (MODBUS-RTU) is selected.
For more complex issues, please contact technical support.
7. User Tips
- For optimal accuracy, allow the device to warm up for a few minutes after powering on before taking critical measurements.
- Ensure the weighing platform or load cell mounting is stable and level to prevent measurement inconsistencies.
- Regularly clean the load cell and its surroundings to avoid debris affecting weight readings.
- When configuring communication settings, double-check all parameters to ensure compatibility with your master device.
8. Warranty and Support
8.1 Warranty
The MYPIN LH86-VRRD Digital Weight Controller/Scale comes with an 18-month warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
8.2 Technical Support
For any technical assistance, troubleshooting, or inquiries not covered in this manual, please contact our support team:
- Phone Services: Available 24 hours/day
- Email Services: Responses within 12 hours
- WhatsApp/WeChat: +86 19350856924
- Email: zlinshow001@163.com
When contacting support, please provide your product model (LH86-VRRD) and a detailed description of the issue.
