Application Scenarios
In a large automotive assembly plant, the control cabinets for robotic welding cells operate on 480 V AC three-phase power. Each cabinet requires a reliable 24 V DC supply to power PLC racks, safety relays, HMI panels, and network switches. When a welding robot initiates a high-current weld sequence, the sudden load demand can cause voltage sags on single-phase supplies, potentially resetting PLCs and triggering nuisance line stoppages. The 1606-XLS480E-3 solves this problem through its three-phase input architecture. If one phase experiences a disturbance, the remaining two phases maintain output regulation, ensuring the control system rides through the event without interruption. Its 30 A power reserve for 4 seconds provides the headroom needed to start inductive loads like contactors and valve solenoids without causing output voltage dips that could crash sensitive electronics.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1606-XLS480E-3 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Category | Switched Mode Power Supply (Performance Family) |
| Input Voltage | 380–480 V AC, 3-phase (47–63 Hz) |
| DC Input Range | 450–780 V DC |
| Output Voltage | 24–28 V DC (adjustable) |
| Output Current | 20 A continuous (24 V DC) |
| Power Reserve | 30 A for typically 4 seconds (150% power boost) |
| Output Power | 480 W continuous; 720 W peak |
| Efficiency | 95.0% typical |
| Power Factor | 0.94 typical |
| Ripple and Noise | < 100 mVpp |
| Hold-up Time | 19–22 ms typical |
| Operating Temperature | -25°C to +70°C (>60°C with derating) |
| Dimensions (W×H×D) | 65 × 124 × 127 mm |
| Weight | 870 g (1.92 lb) |
| Mounting | DIN-rail (35 mm) or wall mount (with 1606-XLB bracket) |
| Protection Rating | IP20 |
| Connection Type | Spring-clamp terminals |
| Diagnostic Output | DC-OK relay contact + green DC-OK LED + red overload LED |