AC/DC Current Transmitter JXK-14 User Manual

1. Product Overview

The JXK-14 AC/DC Current Transmitter is designed to convert large AC or DC current signals from industrial fields into standard process signals (e.g., 4-20mA, 0-10V, 0-5V, 1-5V) or RS485 digital signals. This conversion facilitates subsequent monitoring, control, and display in various automation systems. The device ensures signal amplification and isolation, enhancing system stability and security. It supports DIN rail independent mounting for easy integration.

The principle of the AC/DC current transmitter involves converting the input current signal into a linear proportional voltage or current signal through internal components like input amplifiers, resistance networks, and output transistors. For AC current, rectification and filtering precede linear conversion. For DC current, direct linear conversion is performed.

Key Advantages:

• High Precision and Linearity: Ensures accurate signal conversion.
• High Isolation and Anti-interference: Primary side is highly insulated to prevent electromagnetic interference and maintain signal purity.
• Low Power and Long Life: Designed for low power consumption, extending device lifespan and reducing energy use.
• Easy Installation and Maintenance: Simple design and compact construction facilitate easy setup and upkeep.
• Strong Adaptability: Suitable for diverse industrial environments including petroleum, chemical, boiler, and coal industries, with minimal interference from the surroundings.

2. Specifications

3. Installation and Setup

Installation Precautions:

1. Before using, carefully check and confirm the quantity, model, and specification of the product against the packing list and product label. Read this operation manual thoroughly.
2. The installation environment should be free of conductive dust, corrosive gases, strong impacts, and vibrations.
3. The integrated structure of the current converter transmitter is not removable. Avoid collision and falls. Do not alter or tear any labels on the product.
4. When installing multiple current transmitters centrally, ensure an installation spacing of at least 10mm between units.
5. Wiring must strictly follow the provided wiring diagrams. Only apply power and signal after verifying all connections.

Dimensions and Wiring:

Product Size:

• Length: 99mm
• Width: 35mm
• Height: 65mm
• Hole Diameters: Φ4mm, Φ8mm, Φ12mm, Φ15mm

Wiring Instructions:

Refer to Figure 5 for detailed wiring diagrams. The power supply must be connected in strict accordance with the diagram. Thread current-carrying wires through the product's sensing hole in the direction of the arrow marked on the product.

• Standard Output Wiring (e.g., 4-20mA, 0-10V, 0-5V, 1-5V):
  Connect the input current (In+, In-) to terminals 1-6. Connect the power supply (PWR: DC24V) to terminals 8 (12V), 9 (24V), 10 (GND). Connect the output signal (OUT+, OUT-) to terminals 7 (IOUT-), 11 (IOUT-), 12 (IOUT+).
• RS485 Output Wiring:
  Connect the input current (In+, In-) to terminals A and B. Connect the power supply (PWR: DC24V) to terminals 8 (12V), 9 (24V), 10 (GND). Connect the RS485 output (P+, P-) to terminals 11 (P-), 12 (P+).

4. Operating Instructions

Once the current transmitter is correctly installed and wired according to the diagrams in Section 3, it is ready for operation. The device will automatically convert the measured AC or DC current into the selected output signal.

• Input Current: The device supports various input current ranges from 0-10A up to 0-150A, for both AC and DC signals. Ensure the measured current falls within the specified range of your particular model.
• Output Signal: The output signal (4-20mA, 0-10V, 0-5V, 1-5V, or RS485) will be linearly proportional to the input current. This signal can then be fed into a control system, PLC, digital display, or data acquisition unit for further processing and monitoring.
• Power Supply: The device requires a stable DC24V power supply (or AC85-265V depending on the model). Verify the power supply voltage is within the acceptable range to ensure proper functioning.

Product Demonstration Video:

Video 1: Product demonstration of the AC/DC Current Transmitter.

5. Maintenance

The JXK-14 current transmitter is designed for reliable operation with minimal maintenance. However, adhering to the following guidelines will help ensure its longevity and performance:

• Environmental Conditions: Ensure the operating environment remains free from conductive dust, corrosive gases, and excessive moisture.
• Physical Inspection: Periodically inspect the device for any signs of physical damage, loose connections, or corrosion on the terminals.
• Cleaning: If necessary, gently clean the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Avoid Tampering: The integrated structure is not designed for user disassembly. Do not attempt to open the unit or tear off any labels, as this may void the warranty and compromise performance.
• Vibration and Impact: Protect the device from strong impacts and vibrations, which can affect its internal components and accuracy.

6. Troubleshooting

If you encounter issues with your JXK-14 Current Transmitter, consider the following troubleshooting steps:

• No Output Signal:
  1. Verify the power supply (DC24V) is correctly connected and providing the specified voltage.
  2. Check all wiring connections for tightness and correctness according to the diagrams in Section 3.
  3. Ensure the input current is flowing through the sensing hole and is within the device's specified measurement range.
  4. Confirm the output device (e.g., PLC, meter) is correctly configured to receive the transmitter's signal type (e.g., 4-20mA, 0-10V).
• Inaccurate Output:
  1. Check for any external electromagnetic interference sources near the transmitter or wiring.
  2. Ensure the input current is stable and not fluctuating rapidly beyond the device's response capabilities.
  3. Verify the load connected to the output does not exceed the transmitter's specified load capacity (5mA).
  4. Confirm the correct model variant (e.g., current range, output type) was selected for your application.
• Device Overheating:
  1. Ensure adequate ventilation around the device, especially if multiple units are installed closely. Maintain the recommended 10mm spacing.
  2. Verify the ambient operating temperature is within the specified range (-10°C to 70°C).

If the problem persists after performing these checks, please contact customer support for further assistance.

7. User Tips

• Proper Grounding: Always ensure proper grounding of your system to minimize noise and ensure stable operation of the transmitter.
• Wire Gauge: Use appropriate wire gauges for both power supply and signal connections to prevent voltage drops and signal degradation.
• Calibration Verification: For critical applications, periodically verify the calibration of the transmitter against a known current source to ensure continued accuracy.
• Environmental Protection: While robust, protecting the device from extreme conditions (e.g., direct water exposure, excessive dust) will prolong its life.

8. Warranty and Support

The Vadias JXK-14 AC/DC Current Transmitter is manufactured to high-quality standards and is certified with CE, FCC, and RoHS compliance.

For detailed technical information, specifications, and additional guidance, please refer to the official user manual PDF available at: User Manual (PDF).

If you require further assistance, technical support, or have questions regarding the product, please contact Vadias Electronic Store customer service.