Application Scenarios
In a packaging-line control cabinet running a ControlLogix PLC, remote I/O, several solenoid valves, and a touchscreen HMI, the original 10 A power supply was operating at the edge of its rating. Every time the line started and the solenoids shifted together, the inrush dip was enough to trigger a 24 V undervoltage fault and stop the machine. Replacing it with an 1606-XLS480F solved two problems at once. First, the 20 A capacity moved the steady-state load to roughly 40% of rating, eliminating the thermal stress. Second, the power supply’s built-in power boost delivered short-term overload current to cover solenoid inrush without the output sagging. The DC OK relay was wired to a spare input on the PLC, giving the operators a real-time power-supply health indication rather than discovering a failing unit only after the next unexplained stop. The cabinet actually gained space: the wider 240 W supply it replaced was swapped for a 105 mm-wide unit.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1606-XLS480F |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Category | Switch-mode power supply / industrial DIN-rail PSU |
| Product Family | Bulletin 1606-XL |
| Revision | F (adjustable output voltage) |
| AC Input Voltage | 100–120 V AC / 200–240 V AC, single-phase, 50/60 Hz (auto-ranging) |
| Input Current | 6.2 A @ 100–120 V AC; 3.1 A @ 200–240 V AC |
| Inrush Current | Typically 8 A (valley-filling PFC), max 16 A; cold-start 25 A |
| AC Inrush Limiting | Via PFC circuit; smooth start, no sensitive inrush-limiting devices needed |
| Output Voltage | 22.5–28 V DC adjustable (24 V DC nominal) |
| Output Voltage Tolerance | ±1% static; ±2% incl. line and load regulation |
| Rated Output Current | 20 A |
| Rated Output Power | Approx. 480 W (verify against unit label; some documentation lists 240 W) |
| Power Boost | 150% rated output for 5 s; up to 300% for 2.5 ms |
| Parallel Operation | Up to 3 units (current sharing); required for N+1 redundancy |
| Adjustment Range | 22.5–28 V DC via front potentiometer |
| Ripple and Noise | <50 mV pk-pk (20 Hz…20 MHz, 20 MHz BW) |
| Residual Ripple | <1% peak |
| Efficiency | 88% at 230 V AC full load |
| Power Loss | 64 W maximum at full load |
| Hold-Up Time | 20 ms minimum @ 230 V AC |
| DC OK Relay Contact | 30 V DC / 24 V AC, 1 A resistive |
| Protection Functions | Short-circuit protected (hiccup mode, auto-recovery); overload; overvoltage; overtemperature |
| Connection Type | Screw terminals with cage clamp; 2× input, 4× output (paralleled internally) |
| Mounting | Standard 35 mm DIN rail (EN 60715) |
| Indicators | DC OK LED (green) |
| Housing | Plastic, fully insulated, no ground required |
| Dimensions (H × W × D) | 124 × 105 × 127 mm (4.88 × 4.13 × 5.0 in.) |
| Weight | 1.3 kg (2.87 lb) |
| Operating Temperature | –25…+70 °C, with output derating above +60 °C |
| Storage Temperature | –40…+85 °C |
| Relative Humidity | 5–95% RH, non-condensing |
| Altitude | 2000 m without derating |
| MTBF | >500,000 h @ 40 °C |
| Certifications | CE, cULus (UL 508, Class 2), NEC Class 2, UL 1604 (hazardous locations), SEMI F47, GOST-R, C-Tick |
| Conformity | EMC per EN 61204-3; immunity and emission per EN 61000-6-2 / EN 61000-6-3 |
| Lifecycle Status | Discontinued / obsolete — discontinued 30 June 2014; supplied as new surplus or tested used |