1. Introduction
The mypin DA8-RRB is a versatile digital sensor meter designed for precise measurement and monitoring of various industrial signals. It features a clear 4-digit LED display for Process Value (PV) and Set Value (SV), and supports multiple input types including 0-75mV, 4-20mA, and 0-10V. Equipped with two relay alarm outputs, this meter provides stable performance and is easy to operate, making it suitable for integration with a wide range of sensors such as transformers, pressure sensors, weighing sensors, and more.
2. Safety Information
- Always disconnect power before making any wiring connections or performing maintenance.
- Ensure all wiring is done by qualified personnel and complies with local electrical codes.
- Verify the power supply voltage matches the meter's specifications (90-265V AC/DC).
- Avoid exposing the device to excessive moisture, dust, or extreme temperatures.
- Do not attempt to open or repair the device yourself; refer to qualified service personnel.
- Ensure proper grounding to prevent electrical shock.
3. Product Overview
3.1 Front Panel
The front panel features a large 4-digit LED display for the Process Value (PV) and a smaller 4-digit LED display for the Set Value (SV). Control buttons include SET, <<RST (Reset/Shift), Up arrow, and Down arrow for configuration and operation. Indicators for AL1, AL2 (Alarm 1, Alarm 2), and OUT (Output) are also present.
3.2 Rear Panel and Terminals
The rear panel houses the terminal block for all electrical connections, including power input, auxiliary power, sensor inputs, and relay outputs. A detailed wiring diagram is provided on the label for easy installation.
3.3 Mounting Clips
The meter comes with mounting clips for secure panel installation. These clips slide into grooves on the side of the meter and are tightened to hold the unit in place.
4. Specifications
| Parameter | Specification |
|---|---|
| Model | DA8-RRB |
| Input Signal | 0-75mV, 4-20mA, 0-10V |
| Power Supply | 90-265V AC/DC |
| Auxiliary Power Supply | 24V DC |
| Power Consumption | Less than 3W |
| Accuracy | 0.3%F.S ±2dgt |
| Sampling Rate | ≤8 times/second |
| Alarm Output | 2 x RELAY (Normal Open, AC250V/3A or DC 30V/3A COS=1) |
| Analog Output | 4-20mA (Wiring not explicitly shown on provided diagram) |
| Dimensions (W x H x D) | 48mm x 96mm x 80mm |
| Weight | 171g |
| Material | ABS |
5. Setup
5.1 Installation
- Prepare a panel cutout of appropriate dimensions for the meter (typically 45mm x 92mm, though not explicitly stated, this is standard for 48x96mm meters).
- Insert the meter into the panel cutout from the front.
- Slide the provided mounting clips into the grooves on the sides of the meter from the rear.
- Tighten the screws on the mounting clips to secure the meter firmly in the panel.
5.2 Wiring Diagram
5.3 Terminal Connections
Refer to Figure 4 and the following instructions for correct wiring:
| Terminal No. | Description | Notes |
|---|---|---|
| 1, 2 | Power Supply (90-265V AC/DC) | Connect to main power source. |
| 3, 4 | Auxiliary Power (24V DC) | For external devices or sensors requiring 24V DC. |
| 5, 6 | Alarm Output 1 (AL1) | Relay output, Normally Open (NO). Max AC250V/3A or DC30V/3A. |
| 7, 8 | Alarm Output 2 (AL2) | Relay output, Normally Open (NO). Max AC250V/3A or DC30V/3A. |
| 9 | Common (com.mV.mA.V) | Common terminal for mV, mA, and V inputs. |
| 10 | mV / mA Input | Connect positive terminal of 0-75mV or 4-20mA sensor here. |
| 11 | Voltage Input (V) | Connect positive terminal of 0-10V sensor here. |
| 12 | Positive (+) | Typically for 4-wire sensors or external sensor power. |
Important: Ensure correct polarity for all input signals. Incorrect wiring can damage the meter or sensor.
6. Operating Instructions
6.1 Power On
After completing all wiring, apply power to the meter. The LED displays will illuminate, showing the current Process Value (PV) and potentially a Set Value (SV).
6.2 Button Functions
- SET button: Used to enter parameter setting mode and confirm selections.
- <<RST button: Used to shift digits during value setting or to reset certain functions.
- Up (↑) button: Used to increase values or navigate through menu options.
- Down (↓) button: Used to decrease values or navigate through menu options.
6.3 Basic Operation (General)
While specific programming steps are not detailed in the provided information, typical operation involves:
- Viewing PV/SV: The main display shows the current Process Value (PV). The smaller display shows the Set Value (SV), which might be an alarm setpoint or other configured parameter.
- Setting Parameters: Press the SET button to enter the parameter setting mode. Use the Up/Down arrows to select parameters and adjust their values. Use the <<RST button to shift between digits when setting numerical values. Press SET again to confirm and save changes.
- Alarm Function: The AL1 and AL2 indicators will light up when the measured PV exceeds or falls below their respective setpoints, triggering the corresponding relay outputs.
For detailed parameter configuration, refer to the full product manual (if available from the manufacturer) or contact technical support.
7. Maintenance
- Cleaning: Gently wipe the display and casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Connection Check: Periodically inspect all wiring connections to ensure they are secure and free from corrosion.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prolong the life of the device.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not power on. | No power supply or incorrect wiring. | Check power connections (Terminals 1, 2) and ensure voltage is within 90-265V AC/DC. |
| Display shows "----" or erratic readings. | Incorrect sensor wiring, sensor malfunction, or wrong input type selected. | Verify sensor connections (Terminals 9-12) and ensure the sensor is functioning correctly. Check meter configuration for correct input signal type. |
| Alarm outputs (AL1/AL2) not activating. | Alarm setpoints incorrect or relay wiring issue. | Check alarm setpoints (SV) and ensure they are configured correctly relative to the PV. Verify wiring to external alarm devices (Terminals 5-8). |
| Inaccurate readings. | Sensor calibration issue or environmental interference. | Calibrate the sensor if possible. Ensure the meter is not exposed to strong electromagnetic interference. |
9. User Tips
- Input Signal Selection: Before connecting your sensor, ensure the meter is configured for the correct input signal type (mV, mA, or V) to avoid incorrect readings or potential damage.
- Clear Labeling: For complex setups, clearly label all wires connected to the terminal block to simplify future troubleshooting or maintenance.
- Test Alarms: After setting alarm points, perform a test to ensure the relay outputs activate as expected.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
