Application Scenarios
In a packaging machine control cabinet, multiple servo drives, PLC modules, and sensor networks are powered from a shared 24V DC bus. During machine startup, the inrush current drawn by drive capacitors and motor starting circuits can momentarily exceed the supply‘s continuous rating. A conventional 240W supply would either shut down or require oversizing to 480W to handle the surge. The 1606-XLS240E addresses this directly: its Power-Boost function delivers 15A at 24V for approximately 4 seconds, absorbing the startup surge without tripping the output or forcing a larger unit . Once the drives are energized and running, the supply returns to its 10A continuous output, maintaining stable voltage for the PLC and I/O modules throughout the production cycle.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1606-XLS240E |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Category | Performance Switched-Mode Power Supply |
| Output Voltage | 24–28V DC adjustable |
| Output Current | 10A continuous at 24V; 15A for ~4s (Power-Boost) |
| Output Power | 240W continuous; 360W short-term |
| Input Voltage | 100–240V AC (85–275V AC operational); 110–150V DC |
| Efficiency | 92.3% at 120V AC; 93.0% at 230V AC |
| Inrush Current | Active limitation; typ. 4–7A peak |
| Hold-up Time | Typ. 27–28ms at 120/230V AC |
| Operating Temperature | −25°C to +70°C; derating 6W/°C above +60°C |
| Dimensions (W×H×D) | 60 × 124 × 117 mm |
| Terminal Type | Quick-connect spring-clamp, IP20 finger-safe |
Technical Principles and Innovative Values
- Innovation Point 1: Power-Boost Short-Term Overload Capability. The 1606-XLS240E delivers 150% of its rated output (15A at 24V) for approximately 4 seconds whenever the load demands it—not just during startup, but also immediately after an output short circuit clears . This reserve current is sufficient to start motors, charge large capacitor banks, or absorb reverse energy from decelerating loads without forcing the system designer to specify a higher-wattage power supply.
- Innovation Point 2: Active Inrush Current Limitation. Rather than relying on passive NTC thermistors that remain hot and ineffective after repeated cycling, the 1606-XLS240E employs active circuitry to limit input inrush current to typically 4–7A peak . This reduces stress on upstream circuit breakers and allows multiple power supplies to be connected to a single AC distribution branch without nuisance tripping during power restoration.
- Innovation Point 3: Diagnostic Transparency via DC-OK Contact and LED Indicators. A dry DC-OK relay contact closes when output voltage reaches the adjusted setpoint and opens when voltage dips more than 10% below setpoint . Combined with green (DC-OK) and red (overload) front-panel LEDs, this provides immediate visual and remote indication of supply health, enabling maintenance staff to distinguish between a power supply fault and a downstream load problem without instrumentation.
