KKnoon 150W 20A Adjustable Constant Current Electronic Load User Manual

1. Ọja Ipariview

The KKnoon 150W 20A Adjustable Constant Current Electronic Load is a versatile direct current (DC) electronic load device designed for testing power supplies, batteries, and other DC sources. It features a 2.4-inch TFT color display for real-time monitoring of various parameters and supports four distinct working modes. This manual provides detailed instructions for its setup, operation, and maintenance.

Figure 1: KKnoon 150W 20A Electronic Load with included accessories.

2. Alaye Aabo

• Ensure the device is powered by a 12VDC, 1A power adapter.
• Do not exceed the maximum load voltage of 150VDC, load current of 20A, or load power of 150W (max. 60W above 120V).
• Always connect the load correctly using the four-wire system for accurate measurements.
• Yẹra fún fífọwọ́ kan àwọn ohun èlò inú nígbà tí a bá tan ẹ̀rọ náà.
• Operate in a well-ventilated area to prevent overheating.

3. Package Awọn akoonu

Jẹrisi pe gbogbo awọn ohun kan wa ninu package:

• 1 x Electronic Load Unit
• 1 x 12VDC Power Adapter
• 1 x NTC Temperature Sensor

4. Ìṣètò Ẹ̀rọ àti Àwọn Ìsopọ̀ Rẹ̀

Familiarize yourself with the main components and connection points of the electronic load.

Figure 2: Key components of the Electronic Load.

1. Operating Power Supply DC Interface: Connect the provided 12VDC, 1A power adapter here.
2. Olufẹ itutu: Automatically activates when internal temperature reaches ≥40°C or current exceeds 3A.
3. Awọn bọtini Iṣakoso: Used for navigation, setting parameters, and turning the load ON/OFF.
4. Ifihan 2.4-inch: TFT color screen showing all operational parameters and settings.
5. Input 4P Terminal Block: For connecting the device under test (DUT). Supports four-wire (A+, V+, V-, A-) and two-wire systems.

Nọmba 3: Alaye view of the four-wire terminal block and NTC sensor interface.

5. Eto ati Wiring

Proper wiring is crucial for accurate measurements and safe operation.

5.1 Agbara ẹrọ naa

• Connect the provided 12VDC, 1A power adapter to the DC input jack (1) on the electronic load.
• Plug the adapter into a suitable power outlet. The display should illuminate.

5.2 Connecting the Load (Device Under Test)

The electronic load supports both four-wire and two-wire connection methods. The four-wire method provides more accurate voltage measurement by separating the voltage sensing lines from the current carrying lines.

Figure 4: Wiring diagrams for four-wire and two-wire connections.

• Four-Wire System: Connect the positive terminal of the DUT to A+ and the negative terminal to A- for current flow. Additionally, connect a separate pair of wires from the positive terminal of the DUT to V+ and the negative terminal to V- fun voltage sensing. This method compensates for voltage drop across the current wires.
• Two-Wire System (Downward Compatible): Connect the positive terminal of the DUT to A+ and the negative terminal to A-. In this configuration, the V+ and V- terminals are internally shorted to A+ and A- respectively. Note that voltage readings may be slightly less accurate due to voltage drop in the current wires.

5.3 Connecting the NTC Temperature Sensor

• Plug the NTC 3950 10K 1% temperature sensor into the dedicated NTC interface next to the 4P terminal block (refer to Figure 3).
• Place the sensor in contact with the component or area whose temperature you wish to monitor (e.g., battery surface). The device will display temperatures from 0-100°C.

6. Awọn ilana Iṣiṣẹ

The electronic load features a 2.4-inch TFT color display and control buttons for easy operation.

Figure 5: Control buttons for operation.

6.1 Ifihan Loriview

The 2.4-inch TFT color screen displays real-time values for:

• Voltage (V)
• Lọwọlọwọ (A)
• Agbara (W)
• Cumulative Energy (Wh)
• Cumulative Capacity (Ah)
• Internal Resistance (Ω)
• Load Status (ON/OFF)
• Operating Mode (CC, CV, CP, CR)
• Protection Status (OVP, OCP, OPP)
• Duro Voltage
• Time Limit Discharge
• External Temperature (if NTC sensor connected)

6.2 Awọn bọtini Iṣakoso

• TAN/PA: Toggles the electronic load ON or OFF.
• '-' (Minus): Decreases parameter values or navigates menu options.
• '+' (Plus): Increases parameter values or navigates menu options.
• Ṣeto: Enters parameter setting mode, confirms selections, or switches between display pages.

6.3 Awọn ipo Ṣiṣẹ

The device supports four primary working modes:

1. CC (Constant Current) Mode: Maintains a constant discharge current regardless of voltage changes. Ideal for battery capacity testing.
2. CV (Ibakan Voltage) Mode: N ṣetọju vol ti o duro nigbagbogbotage across the load.
3. CP (Constant Power) Mode: Maintains a constant power dissipation.
4. CR (Constant Resistance) Mode: Maintains a constant resistance.

Lati yan ipo iṣẹ:

1. Tẹ awọn SET button to enter the main menu or parameter setting interface.
2. Lo awọn '+' or '-' buttons to navigate to the 'Mode' option.
3. Tẹ SET to select, then use '+' or '-' to choose the desired mode (CC, CV, CP, CR).
4. Tẹ SET again to confirm the mode selection.

6.4 Eto paramita

After selecting a working mode, you can set its specific parameters (e.g., target current for CC mode, target voltage for CV mode).

1. In the desired working mode, press SET to highlight the parameter you wish to adjust.
2. Lo '+' or '-' to change the value. A long press may accelerate value changes.
3. Tẹ SET again to confirm the value and move to the next parameter or exit setting mode.

6.5 Awọn Eto Idaabobo

The device includes several protection features to prevent damage to the DUT or the electronic load itself.

• Apọjutage Idaabobo (OVP): Supports up to 150V. Set the maximum allowable input voltage.
• Idaabobo lọwọlọwọ (OCP): Supports up to 20A. Set the maximum allowable current draw.
• Over-power Protection (OPP): Supports up to 150W. Set the maximum allowable power dissipation.
• Lopin Voltage Discharge (Low Voltage Idaabobo): Allows setting a minimum discharge voltage. If the DUT voltage drops below this threshold, the load will stop. Default is unlimited; set according to your needs.
• Time Limit Discharge: Supports discharge duration up to 99 hours and 59 minutes. The load will stop automatically after the set time.

To set protection parameters, navigate through the menu using the SET, '+', ati '-' awọn bọtini.

6.6 Miiran Eto

• Chinese and English Interface Switching: Supported. Navigate to the language setting in the menu.
• Zeroing of Total Data: Resets cumulative energy (Wh) and capacity (Ah) measurements.
• Voltage and Current No-Load Nulling: Calibrates the zero point for voltage and current readings when no load is connected.
• Voltage Open Calibration: Allows for fine-tuning voltage wiwọn išedede.
• Current Open Calibration: Allows for fine-tuning current measurement accuracy.
• Tolesese Imọlẹ Iboju: Adjust display brightness for optimal visibility.
• Screen Hibernation Standby Setting: Configures display standby behavior.
• Pada Awọn Eto Ile-iṣẹ pada: Resets all parameters to their default values.

7. Itọju

• Jeki ẹrọ naa di mimọ ati ofe kuro ninu eruku. Lo asọ asọ ti o gbẹ fun mimọ.
• Ensure proper ventilation around the device, especially the cooling fan, to prevent overheating.
• Store the device in a dry environment, away from direct sunlight and extreme temperatures.
• Do not attempt to disassemble the device beyond what is necessary for sensor connection or cleaning, as this may void the warranty.

8. Laasigbotitusita

• Ẹrọ ko ni agbara lori: Check if the 12VDC power adapter is correctly connected and functioning. Ensure the power outlet is active.
• No load current/voltage reading: Verify that the DUT is properly connected to the 4P terminal block (A+, A-, V+, V-). Ensure the DUT is powered on and supplying voltage. Check if the load is enabled (ON/OFF button).
• Load stops unexpectedly: Check if any protection (OVP, OCP, OPP, Low Voltage Protection, Time Limit Discharge) has been triggered. Adjust protection limits if necessary.
• Awọn kika ti ko pe: Ṣe voltage and current open calibration. Ensure a four-wire connection is used for maximum accuracy.
• Cooling fan not running: The fan activates automatically when the internal temperature reaches ≥40°C or current exceeds 3A. If these conditions are met and the fan is still not running, contact support.

9. Awọn pato

10. Atilẹyin ọja ati Support

For warranty information and technical support, please refer to the retailer where the product was purchased or visit the official KKnoon webojula. Tọju iwe-ẹri rira rẹ bi ẹri rira.