Walfront DC 12V 4-Digit Digital LED Counter (0-9999, Red Display)

1. 서론

The Walfront DC 12V 4-Digit Digital LED Counter is designed for precise counting applications. It features a bright LED display, high accuracy, and stable performance. This counter is easy to install and automatically retains the current count value even after power interruption. It supports both incrementing and decrementing counts within a range of 0 to 9999.

그림 1: 전면 view of the Walfront Digital LED Counter, showing the 4-digit red display.

2. 제품 특징

• 내구성 있는 구조: Manufactured from high-grade plastic material, ensuring wear resistance, durability, and a long service life.
• 명확한 전시: Equipped with 4 bright LED lights for a clear and easy-to-read display.
• 고성능: Offers excellent stability, high accuracy, and straightforward setup.
• 데이터 보존: The count value is automatically saved and retained even when the power supply is disconnected.
• 다양한 응용 프로그램: Suitable for a wide range of uses in automation equipment and various testing setups.

3. 사양

Figure 2: Product dimensions of the Walfront Digital LED Counter.

4. 패키지 내용

패키지에는 다음 품목이 포함됩니다.

• 1 x Digital Display Counter
• 1 x 5-pin connection cable

Figure 3: The included 5-pin connection cable.

5. 설정 및 배선

Proper wiring is essential for the correct operation of the digital counter. Refer to the diagram below and the terminal descriptions for connection instructions.

Figure 4: Wiring diagram and terminal identification on the back of the counter.

배선 단자 설명:

• 터미널 1: Positive Power Supply (DC 8-24V)
• 터미널 2: Negative Power Supply / Ground
• 터미널 3: Signal Ground (Common with Terminal 2)
• 터미널 4: Clear Input (Connect this terminal to Ground (Terminal 2 or 3) to reset the counter to 0.)
• 터미널 5: Switch Pulse Signal Input (This terminal is for general pulse input. Its specific function may vary or be unused depending on the application.)
• 터미널 6: Count Up Input (Blue wire) - Connect this terminal to Ground (Terminal 2 or 3) to increment the count by one.
• 터미널 7: Count Down Input (Black wire) - Connect this terminal to Ground (Terminal 2 or 3) to decrement the count by one. The count will not go below 0.

중요 참고 사항: The input signals for Clear, Count Up, and Count Down are active low. This means that to trigger these functions, the respective terminal must be connected to the Ground (negative power supply). An open state (not connected) is considered OFF, and a connection to Ground is considered ON.

6. 운영

Once properly wired and powered on, the counter will display the current count. The operation is straightforward:

• 전원 켜기: Apply DC 8-24V power to Terminal 1 (Positive) and Terminal 2 (Negative). The display will illuminate with the last saved count.
• Increment Count: Briefly connect Terminal 6 (Blue wire) to Ground (Terminal 2 or 3). The displayed count will increase by one.
• Decrement Count: Briefly connect Terminal 7 (Black wire) to Ground (Terminal 2 or 3). The displayed count will decrease by one. The counter will not display negative values; it will stop at 0.
• 클리어 카운트: Briefly connect Terminal 4 to Ground (Terminal 2 or 3). The displayed count will reset to 0.
• Power Off Data Retention: The counter automatically saves the current count. When power is restored, the counter will display the last recorded value.

7. 유지관리

The Walfront Digital LED Counter requires minimal maintenance. Follow these guidelines to ensure optimal performance and longevity:

• 청소: 부드럽고 마른 천을 사용하여 디스플레이와 c를 청소하십시오.asing. 연마성 세척제나 용제 사용을 피하세요.
• 환경: Operate the device within its specified temperature and humidity ranges. Avoid exposure to excessive moisture, dust, or direct sunlight.
• 사이: 모든 배선 연결부를 주기적으로 점검하여 안전하고 부식되지 않았는지 확인하세요.
• 전원 공급 장치: Ensure a stable DC 8-24V power supply is used to prevent damage to the unit.

8. 문제 해결

If you encounter issues with your digital counter, refer to the following troubleshooting steps:

• 디스플레이 없음:
  • Check if the power supply (DC 8-24V) is correctly connected to Terminal 1 (Positive) and Terminal 2 (Negative).
  • Verify that the power supply is active and providing the correct voltage.
• Counter Not Responding to Input:
  • Ensure that the input terminals (Terminal 4, 6, or 7) are correctly connected to Ground (Terminal 2 or 3) when triggering a count or clear action. Remember inputs are active low.
  • Check for loose or faulty wiring connections.
  • Confirm that the pulse signal duration is sufficient for the counter to register.
• Incorrect Count:
  • Verify that the correct input terminal (Terminal 6 for Up, Terminal 7 for Down) is being triggered.
  • Ensure there are no unintended short circuits or intermittent connections causing spurious counts.

If the problem persists after following these steps, please contact Walfront customer support for further assistance.

9. 보증 및 지원

Walfront products are manufactured to high-quality standards. In the unlikely event of a product defect, please refer to your purchase documentation for warranty details and return policies. For technical support or inquiries, please contact Walfront customer service through the retailer where the product was purchased.