The **WLS28-2..1130XPWM** is a high-performance industrial LED strip light manufactured by Banner Engineering. The "1130" indicates a length of approximately 1130mm, and the "PWM" suffix specifies that the unit is designed for dimming via Pulse Width Modulation. --- ### 1. Core Electronic Specifications The internal electronics are designed for industrial environments, focusing on thermal management and voltage regulation. | Feature | Specification | | :--- | :--- | | **Operating Voltage** | 12V DC to 30V DC | | **Current Consumption** | Max ~3.12A at 12V / ~1.20A at 30V | | **Control Signal** | PWM (Pulse Width Modulation) | | **PWM Frequency** | Up to 1000 Hz | | **Circuit Type** | Constant Current Driver | | **Connection Type** | M12 Quick Disconnect or Integral Cable | --- ### 2. Key Internal Components #### A. LED Array The unit contains a linear PCB populated with high-intensity Surface Mount Device (SMD) LEDs. These are typically arranged in "banks" or parallel strings to ensure that a single LED failure does not darken the entire strip. #### B. Constant Current Driver Unlike cheap LED strips that use simple resistors, the WLS28-2 series uses **active constant current regulation**. * **Function:** It maintains a steady current through the LEDs regardless of fluctuations in the supply voltage (within the 12-30V range). * **Benefit:** This prevents flickering and protects the LEDs from overcurrent, significantly extending their lifespan (rated for 50,000+ hours). #### C. PWM Dimming Circuitry The "PWM" model includes a dedicated input wire (typically the white or gray wire depending on the pinout) that interfaces with the internal driver. * **Logic:** The electronics interpret the duty cycle of the incoming PWM signal to adjust the average current sent to the LEDs. * **Dimming Range:** Usually 0% to 100% brightness. --- ### 3. Wiring Configuration For the PWM models, the wiring usually follows this logic for an M12 4-pin or 5-pin connector: | Pin | Wire Color | Function | | :--- | :--- | :--- | | 1 | Brown | +12V DC to +30V DC | | 3 | Blue | DC Common (Ground) | | 4 | Black | Not Used / Signal depending on model | | 2/5 | White/Gray | **PWM Input Signal** | --- ### 4. Protective Electronics The PCB includes several layers of hardware protection: * **Reverse Polarity Protection:** Prevents damage if the positive and negative wires are swapped. * **Transient Voltage Suppression (TVS):** Protects the internal circuitry from voltage spikes common in industrial motor environments. * **Thermal Foldback:** High-end industrial strips often include a thermistor that reduces current if the internal temperature exceeds a safe threshold. ---