1. Introduction
This instruction manual provides detailed information for the safe and efficient operation of your HANYOUNG AX4-3A Thermostat. Please read this manual thoroughly before installation and use, and keep it for future reference. This device is designed for precise temperature control in various industrial and commercial applications.
2. Safety Information
To ensure safe operation and prevent damage to the device or injury to personnel, observe the following safety precautions:
- WARNING: Always disconnect power before performing any installation, wiring, or maintenance.
- Ensure proper grounding to prevent electric shock.
- Do not operate the device in environments with excessive moisture, corrosive gases, or flammable substances.
- Only qualified and authorized personnel should perform installation and wiring.
- Verify all wiring connections are secure and correct before applying power.
3. Product Overview
The HANYOUNG AX4-3A is a high-precision digital thermostat featuring a clear dual-line digital display for process value (PV) and set value (SV), along with intuitive control buttons. It supports multiple input types and control methods, making it versatile for various temperature control needs.
Figure 1: Front view of the HANYOUNG AX4-3A Thermostat, showing the digital display and control buttons.
Figure 2: Internal view of the thermostat's terminal block, illustrating the wiring connections for power, sensor, and output.
Figure 3: The HANYOUNG AX4-3A Thermostat as packaged in its box, highlighting its compact design and protective packaging.
Figure 4: Product label on the packaging, indicating model AX4-1A, input/output types, and power requirements. Note: This label is for a similar model, AX4-1A, but illustrates typical HANYOUNG product labeling.
4. Setup
4.1. Mounting
The AX4-3A thermostat is designed for panel mounting. Ensure adequate space for ventilation around the unit and sufficient clearance for wiring connections. Refer to the dimensions provided in the specifications section for precise panel cutout requirements.
4.2. Wiring
Connect the power supply, temperature sensor, and output devices to the appropriate terminals on the rear of the unit. Refer to Figure 2 for the terminal block layout. Ensure all connections are secure and correctly polarized according to the wiring diagram for your specific application.
- Power Supply: 100 - 240 V a.c., 50/60 Hz.
- Sensor Input: Multi-input support including various Thermocouple types (K, J, T, E, R, S, B, N, W5Re/W26Re, PLII), RTD types (Pt100, JPt100), and DC Voltage/Current signals (0-5V, 1-5V, 0-10V, 0-20mA, 4-20mA). Ensure the sensor type configured in the thermostat matches the connected sensor.
- Output: Multi-output support, typically including Relay, SSR (Solid State Relay) drive, Current, or Voltage outputs. The specific output type depends on the model variant.
5. Operating Instructions
5.1. Power On
Once all wiring is complete and verified, apply power to the thermostat. The display will illuminate, showing the current process value (PV) on the upper display (red) and the set value (SV) on the lower display (green).
5.2. Setting Temperature
To adjust the set value (SV):
- Press the MODE button to enter the parameter setting mode.
- Navigate to the SV parameter using the MODE button.
- Use the Up (▲) and Down (▼) arrow buttons to adjust the desired temperature.
- Press the MODE button again to confirm the setting and exit the parameter mode.
5.3. Control Modes
The AX4-3A supports various control methods, including PID control with auto-tuning functionality for optimal performance, and simple ON/OFF control. Advanced control parameters and functions can be accessed and configured through the parameter setting menu. Refer to the comprehensive technical manual for detailed instructions on advanced settings and calibration.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your thermostat.
6.1. Cleaning
Clean the front panel and display with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the display or casing.
6.2. Inspection
Periodically inspect all wiring connections to ensure they remain tight and free from corrosion or damage. Check that the ventilation openings on the unit are clear of dust and debris to prevent overheating.
7. Troubleshooting
This section provides solutions to common issues you may encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Display / Unit Not Powering On | No power supply; Incorrect wiring; Blown fuse (internal/external) | Check power connections and voltage. Verify wiring. Inspect fuses if applicable. |
| Incorrect Temperature Reading | Sensor type mismatch; Sensor wiring error; Damaged sensor; Sensor not properly installed | Verify the configured sensor type matches the connected sensor. Check sensor wiring for shorts or open circuits. Replace damaged sensor. Ensure sensor is correctly positioned. |
| Output Not Activating | SV not reached; Control mode incorrect; Output wiring error; Output device malfunction | Check if PV has reached SV. Verify control mode (e.g., heating/cooling). Inspect output wiring. Test the connected output device (e.g., heater, fan). |
| Unstable Control / Temperature Fluctuations | PID parameters not tuned; External disturbances | Perform auto-tuning for PID parameters. Minimize external temperature fluctuations or drafts near the sensor. |
8. Specifications
Key technical specifications for the HANYOUNG AX4-3A Thermostat:
| Feature | Description |
|---|---|
| Model | AX4-3A |
| Manufacturer | Vanky Industry (HANYOUNG NUX) |
| Input Type | Multi input (Thermocouple: K, J, T, E, R, S, B, N, W5Re/W26Re, PLII; RTD: Pt100, JPt100; DC Voltage: 0-5V, 1-5V, 0-10V; DC Current: 0-20mA, 4-20mA) |
| Sampling Cycle | 100 ms |
| Input Impedance | Max 1 MΩ |
| Allowable Input Wiring Resistance | 10 V DC |
| Display Type | 7 Segment LED (PV: red, SV: green) |
| Insulation Resistance | Min 20MΩ (500V DC) for 1 minute (Primary terminal - secondary terminal) |
| Dielectric Strength | 2,300 V AC, 50/60 Hz, for 1min (Primary terminal - secondary terminal) |
| Control Method | PID control by Auto-tuning, ON/OFF control |
| Manual Reset | Users set with in the range 0.0% - 100.0% |
| Control Output Operation | Reverse operation / Direct operation selectable by the parameter setting |
| Power Supply Voltage | 100-240 V AC 50/60 Hz |
| Voltage Fluctuation | ±10 % of the power supply voltage |
| Power Consumption | 5.5 VA max |
| Ambient Temperature | -5 ~ 50°C |
| Ambient Humidity | 35 ~ 85% RH (without condensation) |
| Vibration Resistance | 10-55 Hz, 0.75 mm, each to direction, X, Y and Z for 2 hours |
| Shock Resistance | 300 m/s² to direction 6 each 3 times |
| Weight | 320 g (Approximate, specific to AX4-3A may vary slightly) |
| Country of Origin | China |
| ASIN | B0DNDPDWQR |
| UPC | 734150687056 |
9. Warranty
This HANYOUNG NUX product is covered by the manufacturer's standard warranty. Please refer to the warranty card included with your product for specific terms and conditions, or contact HANYOUNG NUX customer support for detailed warranty information and service procedures.
10. Support
For technical assistance, product inquiries, or service, please contact HANYOUNG NUX ELECTRONIC (SHANGHAI) CO.,LTD. using the contact information below:
- Telephone: 021-59547598
- Fax: 021-59547738
- Website: hyelec.com.cn