សៀវភៅណែនាំអ្នកប្រើប្រាស់ សំណួរ និងចម្លើយចម្លើយ
ថ្ងៃទី 27 ខែកញ្ញា ឆ្នាំ 2025 - ម៉ោង 05:45 យប់
To dim the LED lights using the PWM-90 series Constant Voltage កម្មវិធីបញ្ជា LED, you can follow these steps based on the information provided in the owner's manual:
1. **Dimming Operation:**
- For Blank-Type: Use DIM+ and DIM-.
- For DA/DA2-Type: Use DA+ and DA-.
2. **Dimming Principle for PWM Style Output:**
- Dimming is achieved by varying the duty cycle of the output current.
- Output DC current duty cycle (%) = TON/T × 100%.
- Output PWM frequency: 1.47kHz for Blank/DA-Type, 2.5kHz for DA2-Type.
3. **3 in 1 Dimming Function (for Blank-Type):**
- Apply one of the three methodologies between DIM+ and DIM-: 0 ~ 10VDC, or 10V PWM signal, or resistance.
- Dimming source current from power supply: 100μA (typ.).
- Methods include applying additive 0 ~ 10VDC, 10V PWM signal (frequency range 100Hz ~ 3KHz), or resistance.
4. **DALI Interface (Primary Side; for DA/DA2-Type):**
- Apply DALI signal between DA+ and DA-.
- DALI protocol comprises 16 groups and 64 addresses.
- First step is fixed at 0.2% of output.
5. **ចំណាំបន្ថែម៖**
- Ensure that the dimming controller is capable of driving these units.
- Follow the specified dimming input values for optimal dimming performance.
- Avoid connecting "DIM- to Vo-" as it may cause issues.
- Verify the suitable use conditions and avoid direct sunlight exposure or prolonged water immersion.
By following these instructions and guidelines provided in the manual, you should be able to effectively dim the LED lights using the PWM-90 series Constant Voltage កម្មវិធីបញ្ជា LED.
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