The **ZWS150BAF-48/CO2** is a specific variant of the ZWS-BAF series manufactured by TDK-Lambda. This is an industrial-grade, open-frame AC-DC power supply designed for high reliability and compact installation. ### 1. Model Nomenclature Breakdown Understanding the suffix is crucial for identifying the specific electronic features: | Part Segment | Meaning | | :--- | :--- | | **ZWS** | Series name (Standard AC-DC On-board type) | | **150** | Output Power (150 Watts) | | **BAF** | High efficiency, active PFC, and compact design | | **48** | Nominal Output Voltage (48V DC) | | **CO2** | **Coating Option:** The PCB is treated with a specialized coating to protect against humidity and dust. | --- ### 2. Key Electronic Specifications The internal circuitry is designed for high efficiency and low noise, typical of TDK-Lambda's industrial standards. * **Input Range:** Universal AC Input (85 - 265VAC, 47-63Hz) or 120 - 370VDC. * **Active PFC:** Built-in active Power Factor Correction (typically 0.98 at 100VAC) to minimize harmonic distortion. * **Output Voltage:** 48V DC (Adjustable by ±10% via an onboard potentiometer). * **Efficiency:** Typically around 88% - 90% depending on load. * **Cooling:** Convection cooled (no fan required under standard operating temperatures). --- ### 3. Component Protections & Reliability The unit includes several protection circuits to safeguard both the power supply and the connected load: 1. **Over Current Protection (OCP):** Constant current limiting with automatic recovery. 2. **Over Voltage Protection (OVP):** Inverter shut down if the output exceeds approximately 115-135% of the nominal voltage. 3. **The "CO2" Coating:** This is a conformal coating applied to the solder side (and often the component side) of the PCB. It prevents leakage currents and electrochemical migration in harsh environments. 4. **Electrolytic Capacitors:** Rated for long life to ensure a high MTBF (Mean Time Between Failures). --- ### 4. Physical Layout and Connectivity | Component | Description | | :--- | :--- | | **Input Connector** | JST Manufacturing B3P5-VH (standard 3-pin for Line, Neutral, Ground) | | **Output Connector** | JST Manufacturing B6P-VH (typically 6-pin for V+ and V-) | | **Potentiometer** | Small VR (Variable Resistor) located near the output for fine-tuning the 48V rail. | | **Mounting** | Open frame with 4 corner mounting holes for chassis integration. | ---