1. Introduction
The ITECH IT6862A is a single-channel programmable DC power supply designed for various laboratory, production, and maintenance applications. This model features a dual-range output, providing flexibility with either 32V/3A/96W or 12V/6A/72W. It offers high resolution (1mV/0.1mA) and includes RS232/USB interfaces for remote control and automation. This manual provides essential information for the safe and efficient operation of your IT6862A power supply.
Figure 1: ITECH IT6862A Programmable DC Power Supply in a laboratory setting.
2. Safety Information
Please read all safety instructions carefully before operating the device. Failure to comply with these instructions may result in electric shock, fire, or personal injury.
- General Safety: Ensure the power supply is connected to a grounded power outlet. Do not operate in wet or damp conditions.
- Ventilation: Maintain adequate ventilation around the unit to prevent overheating. Do not block ventilation openings.
- Power Cord: Use only the provided power cord. Inspect the cord for damage before each use.
- Servicing: Refer all servicing to qualified personnel. There are no user-serviceable parts inside.
- Overload Protection: The unit features Over Temperature Protection (OTP) and Over Voltage Protection (OVP). Do not attempt to bypass these safety features.
3. Product Overview
The ITECH IT6862A is a high-precision programmable DC power supply offering stable and reliable power output. Key features include:
- Single Channel Output: Provides a single, regulated DC output.
- Dual Range Voltage & Current: Offers two distinct operating ranges (32V/3A/96W or 12V/6A/72W) for enhanced flexibility.
- High Resolution: 1mV/0.1mA resolution for precise control.
- List Function: Allows users to program a sequence of voltage, current, and delay steps for automated testing.
- Remote Sense: Compensates for voltage drops in load leads, ensuring accurate voltage delivery at the load.
- Multiple Protections: Includes Over Temperature Protection (OTP) and Over Voltage Protection (OVP) for safe operation.
- Communication Interfaces: Equipped with RS232 and USB interfaces for remote control and data logging.
Front Panel
Figure 2: Front panel of the ITECH IT6862A, showing display, control buttons, and output terminals.
The front panel features a clear digital display for voltage and current, a numeric keypad, function buttons (V-SET, I-SET, Recall, Meter, On/Off, etc.), and output terminals for connecting to the load.
Rear Panel
Figure 3: Rear panel of the ITECH IT6862A, showing power input, communication ports, and warning labels.
The rear panel includes the AC power input, RS232 and USB communication ports, and a terminal block for remote sense connections. Important warning labels regarding servicing and fuse replacement are also present.
4. Setup
4.1 Unpacking and Inspection
- Carefully remove the power supply from its packaging.
- Inspect the unit for any signs of physical damage. If damage is found, contact your supplier immediately.
- Verify that all accessories listed in the package contents (power cord, USB cable, ex-factory test report) are present.
4.2 Connecting Power
- Ensure the power switch on the front panel is in the OFF position.
- Connect the provided power cord to the AC input on the rear panel of the power supply.
- Plug the other end of the power cord into a grounded AC power outlet. The power supply supports 120V (AC) maximum input voltage.
4.3 Connecting the Load
- Connect the positive (+) terminal of your load to the red output terminal on the front panel.
- Connect the negative (-) terminal of your load to the black output terminal on the front panel.
- For remote sensing, connect the sense wires to the dedicated remote sense terminals on the rear panel. This compensates for voltage drop across the load leads.
4.4 Communication Interface
The IT6862A supports RS232 and USB interfaces for remote control and data acquisition.
- USB Connection: Use the provided USB cable to connect the power supply to a computer.
- RS232 Connection: Use an RS232 serial cable to connect the power supply to a computer.
Figure 4: Example of RS232 and USB communication ports on the rear panel.
5. Operating Instructions
5.1 Power On/Off
- Press the Power button on the front panel to turn the unit ON. The display will show a system scan and then the default voltage and current settings.
- To turn the unit OFF, press the Power button again.
5.2 Setting Voltage and Current
- Press the V-SET button to enter voltage setting mode. Use the numeric keypad or the rotary knob to adjust the desired voltage. Press Enter to confirm.
- Press the I-SET button to enter current setting mode. Use the numeric keypad or the rotary knob to adjust the desired current. Press Enter to confirm.
- Press the On/Off button to enable or disable the output.
5.3 Dual Range Operation
The IT6862A offers two output ranges: 32V/3A/96W and 12V/6A/72W. To switch between ranges:
- Ensure the power output is OFF.
- Press Shift + 4 (for high range) or Shift + 7 (for low range). An asterisk (*) in the top left corner of the display indicates high range.
5.4 List Function (Programming)
The List Function allows you to create and execute a sequence of output steps.
- To enter the List Edit mode, press Shift + Enter.
- You can set voltage, current, and delay time for each step.
- Save and load list files as needed.
Figure 5: Visual representation of the List Function for sequential programming.
5.5 Remote Sense
Remote sense automatically compensates for voltage drops in the load leads, ensuring the voltage at the load is precisely what is set on the power supply.
Figure 6: Diagram illustrating the Remote Sense connection for accurate voltage delivery.
5.6 Protection Settings
The power supply includes essential protection features:
- Over Voltage Protection (OVP): Prevents the output voltage from exceeding a set limit.
- Over Temperature Protection (OTP): Shuts down the unit if internal temperature exceeds safe limits.
To set OVP, press Shift + V-SET. Adjust the OVP limit using the rotary knob or keypad and press Enter.
5.7 Saving and Recalling Data
You can save frequently used settings to memory and recall them later.
- To save current settings, press Shift + Recall. Select a memory location (e.g., 1-9) and press Enter.
- To recall saved settings, press Recall. Select the desired memory location and press Enter.
5.8 Keyboard Lock
To prevent accidental changes to settings, you can lock the keypad.
- To lock the keypad, press Shift + On/Off. A 'Lock' indicator will appear on the display.
- To unlock the keypad, press Shift + On/Off again.
5.9 Operational Video Demonstration
Watch this video for a visual guide on operating the ITECH IT6800A series power supply, including basic functions, setting parameters, and using advanced features.
Video 1: Operational demonstration of the ITECH IT6800A series DC Power Supply.
6. Maintenance
6.1 Cleaning
Regularly clean the exterior of the power supply with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no liquids enter the unit.
6.2 Fuse Replacement
If the power supply fails to turn on, check the fuse located near the AC input on the rear panel. Replace only with a fuse of the same type and rating as indicated on the unit (e.g., 250V/3.15A).
7. Troubleshooting
If you encounter issues with your ITECH IT6862A, refer to the following common problems and solutions:
- No Power: Check the power cord connection, power outlet, and the unit's fuse.
- No Output: Ensure the output is enabled (On/Off button) and that OVP/OCP limits are not being triggered. Check load connections.
- Incorrect Output: Verify voltage and current settings. Check remote sense connections if used.
- Communication Issues: Ensure correct cable connections (USB/RS232) and proper driver installation on your computer. Verify communication settings (baud rate, etc.) in the system menu.
For persistent issues, contact ITECH technical support.
8. Specifications
The following table outlines the key specifications for the ITECH IT6862A Programmable DC Power Supply:
| Feature | Specification |
|---|---|
| Model Name | IT6862A |
| Output Ratings (Dual Range) | 0~32V/0~3A/0~96W or 0~12V/0~6A/0~72W |
| Resolution | 1mV/0.1mA |
| Interface | RS232/USB |
| Load Regulation (Voltage) | ≤0.01%+3mV |
| Load Regulation (Current) | ≤0.01%+2mA |
| Line Regulation (Voltage) | ≤0.01%+3mV |
| Line Regulation (Current) | ≤0.01%+2mA |
| Programming Resolution (Voltage) | 1mV |
| Programming Resolution (Current) | 0.1mA |
| Readback Resolution (Voltage) | 1mV |
| Readback Resolution (Current) | 0.1mA |
| Programming Accuracy (12 months, 25°C±5°C, Voltage) | ≤0.04%+8mV |
| Programming Accuracy (12 months, 25°C±5°C, Current) | ≤0.1%+5mA |
| Readback Accuracy (12 months, 25°C±5°C, Voltage) | ≤0.04%+8mV |
| Readback Accuracy (12 months, 25°C±5°C, Current) | ≤0.1%+5mA |
| Ripple (20Hz-20M, Voltage) | ≤3mVp-p |
| Ripple (20Hz-20M, Current) | ≤7mArms |
| Transient Response Time (Recover to 75mV) | ≤50uS |
| Rise Time (10%-90%) | ≤90ms |
| Fall Time (90%-10%) | ≤200ms |
| Sample Rate | 10HZ/S |
| Protection | OTP/OVP |
| Dimensions (W×H×D) | 214.5mm×88.2mm×354.6mm (8.5in×3.5in×14in) |
| Weight | 8.5kg (18.7 lbs) |
| Maximum Input Voltage | 120 Volts (AC) |
| Compatible Devices | Personal Computer |
9. Warranty & Support
ITECH products are designed and manufactured to the highest quality standards. For warranty information, please refer to the documentation included with your product or visit the official ITECH website.
For technical assistance, troubleshooting, or service inquiries, please contact ITECH customer support. Ensure you have your product model number (IT6862A) and serial number ready when contacting support.
You can also visit the ITECH Store on Amazon for more information and product updates.
