1. Introduction
The ITECH IT6700 Series DC Power Supply is a high-performance, digitally controlled power source designed for a wide range of applications. This series includes models IT6720 and IT6721, offering precise voltage and current regulation with excellent stability.
Key Features:
- Completely digital-control for enhanced precision.
- High accuracy and resolution: 10mV/1mA.
- Lower noise and ripple for clean power output.
- Constant Voltage (CV) and Constant Current (CC) modes.
- Compact design for minimum space occupation.
- Bright and easy-to-read Vacuum Fluorescent Display (VFD).
- Comprehensive protection features: Over Current Protection (OCP), Over Voltage Protection (OVP), and Over Temperature Protection (OTP).
- Economical high-performance digital-control power supply.
- Full scale 60V/5A (IT6720) or 60V/8A (IT6721) with 10mV/1mA resolution, eliminating the need for manual switching.
- Dedicated switch control for output.
Applications:
- Laboratory research and development.
- Aging tests for electronic components.
- Educational institutions and training.
- Production line inspection and quality control.
2. Safety Information
Please read all safety information carefully before operating the device to prevent injury or damage to the product. Keep this manual for future reference.
- Always connect the power supply to a grounded AC outlet.
- Do not operate the device in wet or damp conditions.
- Ensure proper ventilation to prevent overheating. Do not block air vents.
- Do not open the casing; there are no user-serviceable parts inside. Refer servicing to qualified personnel.
- Use only the specified power cord and accessories.
- Verify the input voltage matches your local power supply before connecting.
- Avoid touching output terminals when the power supply is active.
3. Package Contents
Upon receiving your ITECH IT6700 Series DC Power Supply, please check the package for the following items:
- ITECH IT6700 Series DC Power Supply unit (IT6720 or IT6721)
- AC Power Cord
- User Manual (this document)
- Test Leads (may vary by model/region)
If any items are missing or damaged, please contact your vendor immediately.
4. Front Panel Overview
The front panel provides all necessary controls and indicators for operating the DC power supply.
Controls and Indicators:
- VFD Display: Shows output voltage, current, and status indicators.
- Voltage Setup Indicator: Illuminates when setting voltage.
- CC Mode Indicator: Illuminates when operating in Constant Current mode.
- OCP Indicator: Illuminates when Over Current Protection is active.
- OVP Indicator: Illuminates when Over Voltage Protection is active.
- Keyboard Lock Indicator: Illuminates when the keypad is locked.
- Output OFF Indicator: Illuminates when the output is disabled.
- Save Button: Saves current settings to memory.
- Prog Button: Accesses programming functions.
- Setup Button: Enters setup menu for various parameters.
- Lock Button: Locks/unlocks the front panel controls.
- Display Button: Toggles display modes or information.
- ON/OFF Button: Toggles the power supply output on or off.
- Shift Button: Used in combination with other buttons to access secondary functions.
- Rotary Encoder: Adjusts voltage, current, and menu parameters.
- Voltage/Current Selector: Selects between voltage and current adjustment modes.
- D Button: Used for specific data entry or function selection.
- VA Display: Toggles between Voltage and Amperage display.
- Output Terminals (+, -, Ground): Connect your load here. Red for positive, Black for negative, Green for ground.
- Main Power ON/OFF Switch: Controls the main power to the unit.
- Air Flow Input: Ensures proper cooling.
5. Rear Panel Overview
The rear panel houses the main power input and communication interfaces.
Components:
- AC Power Input: Connect the provided AC power cord here.
- Cooling Fan: Provides necessary airflow for heat dissipation. Ensure it is not obstructed.
- Communication Ports: (e.g., RS232, USB, GPIB - specific ports may vary by model) For remote control and data logging.
6. Initial Setup
- Unpacking: Carefully remove the power supply from its packaging and inspect for any signs of damage.
- Placement: Place the unit on a stable, level surface with adequate ventilation. Ensure that the air intake and exhaust vents are not blocked.
- Power Connection:
- Ensure the main power switch on the rear panel is in the OFF (O) position.
- Connect the provided AC power cord to the AC input on the rear panel and then to a grounded AC power outlet.
- Initial Power On:
- Flip the main power switch on the rear panel to the ON (|) position.
- The VFD display on the front panel should light up, indicating the unit is powered on.
- Self-Test: The unit will perform a brief self-test. Once complete, it will display the default output settings.
7. Operating Instructions
7.1 Setting Voltage and Current
- Select Parameter: Press the Voltage/Current selector button to switch between voltage and current adjustment modes. The corresponding indicator on the display will illuminate.
- Adjust Value: Turn the Rotary Encoder to adjust the desired voltage or current value. The display will show the setting.
- Fine Adjustment: For finer adjustments, use the Shift button in conjunction with the Rotary Encoder, or press the Rotary Encoder to select a digit for direct adjustment.
- Set Protection Limits (Optional): Use the Setup menu to configure OCP and OVP limits if needed.
7.2 Connecting a Load
- Ensure the output is OFF (Output OFF indicator illuminated).
- Connect the positive (+) terminal of your load to the red output terminal of the power supply.
- Connect the negative (-) terminal of your load to the black output terminal of the power supply.
- If your application requires grounding, connect the ground terminal of your load to the green ground terminal of the power supply.
7.3 Enabling Output
After setting the desired voltage and current and connecting your load:
- Press the ON/OFF button on the front panel.
- The Output OFF indicator will turn off, and the power supply will begin delivering power to your load according to the set parameters.
- The display will show the actual output voltage and current.
7.4 Disabling Output
To stop the power output:
- Press the ON/OFF button again.
- The Output OFF indicator will illuminate, and the power output will cease.
7.5 Memory Functions
The power supply allows you to save and recall frequently used settings:
- Saving Settings: Set your desired voltage and current, then press the Save button. Follow the on-screen prompts to select a memory location.
- Recalling Settings: Press the Prog button, then use the Rotary Encoder to select the desired memory location. Press Prog again to load the settings.
8. Specifications
The following table details the technical specifications for the ITECH IT6700 Series DC Power Supplies.
| Parameter | IT6720 | IT6721 |
|---|---|---|
| Output Rating - Voltage | 0-60V | 0-60V |
| Output Rating - Current | 0-5A | 0-8A |
| Output Rating - Power | 100W | 180W |
| Load Regulation - Voltage | <0.01%+3mV | <0.01%+3mV |
| Load Regulation - Current | <0.01%+5mA | <0.01%+5mA |
| Line Regulation - Voltage | <0.01%+3mV | <0.01%+3mV |
| Line Regulation - Current | <0.01%+5mA | <0.01%+5mA |
| Programming Accuracy - Voltage | <0.05%+10mV | <0.05%+10mV |
| Programming Accuracy - Current | <0.05%+10mA | <0.05%+10mA |
| Readback Accuracy - Voltage | <0.05%+10mV | <0.05%+10mV |
| Readback Accuracy - Current | <0.05%+10mA | <0.05%+10mA |
| Ripple - Voltage | <0.7mVrms | <0.7mVrms |
| Ripple - Current | <5mArms | <5mArms |
| Dimension (WxHxD) | 214mm x 88mm x 282mm | 214mm x 88mm x 282mm |
| Net Weight | 2.5kg | 2.5kg |
*This information is subject to change without notice.
9. Troubleshooting
This section provides solutions to common issues you might encounter with your power supply.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Display off | Power cord not connected; Main power switch off; Blown fuse. | Check power cord connection; Ensure main power switch is ON; Replace fuse (if accessible and safe, otherwise contact support). |
| No output voltage/current | Output is OFF; OCP/OVP activated; Load disconnected or faulty. | Press ON/OFF button to enable output; Check OCP/OVP settings and reset if tripped; Verify load connection and functionality. |
| Output voltage/current unstable | Poor load connection; Overheating; Faulty test leads. | Ensure secure connections; Check for proper ventilation; Replace test leads. |
| Unit overheats | Blocked ventilation; Operating in high ambient temperature. | Clear all obstructions from air vents; Operate in a cooler environment. |
10. Maintenance
10.1 Cleaning
To maintain the performance and appearance of your power supply:
- Wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure no liquids enter the device.
- Periodically clean the ventilation openings to prevent dust buildup.
10.2 Storage
When not in use for extended periods, store the power supply in a dry, dust-free environment, away from direct sunlight and extreme temperatures.
10.3 Calibration
For optimal accuracy, periodic calibration by qualified service personnel is recommended. Refer to the manufacturer's guidelines for calibration intervals.
11. User Tips
- Pre-set Limits: Always set OCP (Over Current Protection) and OVP (Over Voltage Protection) limits slightly above your expected operating values to protect your device under test.
- Short Leads: Use the shortest possible test leads to minimize voltage drop and noise, especially at higher currents.
- Remote Sensing: If available (check your specific model's capabilities), utilize remote sensing for applications requiring high precision at the load, compensating for voltage drop across the test leads.
- Warm-up Time: Allow the power supply a few minutes to warm up after turning it on for optimal stability and accuracy.
- Experiment Safely: When experimenting with new circuits, start with lower voltage and current settings and gradually increase them while monitoring your circuit.
12. Warranty and Support
Your ITECH IT6700 Series DC Power Supply is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your seller.
Technical Support:
If you encounter any issues that cannot be resolved using the troubleshooting guide, or require technical assistance, please contact the seller or authorized service center. Provide your product model number and a detailed description of the problem for efficient support.
For more information, please visit the ITECH official website: www.itechate.com
