Compact DC Power for Demanding ControlLogix ApplicationsThe 1756-PB50 delivers efficient 24VDC power conversion for Allen-Bradley ControlLogix systems. This space-saving power supply maintains reliable operation across varying temperature conditions. It provides essential backplane power for your entire automation rack with consistent performance.Electrical Specifications & Performance DataInput Voltage Range: 18-32 V DC with 24 V DC nominal operationMaximum Input Power: 85W at 50°C, derating to 70W at 60°COutput Power Rating: 60W at 0-50°C, 50W at 0-60°C ambient temperatureCurrent Capacity at 5.1V DC: 8A at 50°C, 6A at 60°C for core logicCurrent Capacity at 24V DC: 2.5A at 50°C, 2.0A at 60°C for interfaceCurrent at 3.3V DC: 2A continuous for low-voltage circuitsCurrent at 1.2V DC: 1.5A continuous for specialized applicationsInrush Current: 30A maximum during initial power applicationEnvironmental Specifications & DurabilityOperating Temperature: 0°C to 60°C (32°F to 140°F) full rangeStorage Temperature: -40°C to 85°C for transport and storageRelative Humidity: 5% to 95% non-condensing during operationOperational Shock: 30G impact resistance for rugged environmentsVibration Resistance: 2.0G from 10-500 Hz frequency rangeIsolation Rating: 250V continuous reinforced insulation systemAltitude Rating: 2000 meters maximum operating elevationPhysical Dimensions & Installation RequirementsDimensions: 14.0 × 7.8 × 14.5 cm (5.51 × 3.07 × 5.71 inches)Weight: 0.77 kg (1.7 pounds) compact and lightweight designMounting Position: Left-side chassis slot, dedicated locationChassis Compatibility: Series A, B, and C models A4 through A17Wiring Specification: 2.5 mm² (14 AWG) 90°C rated copper wireEnclosure Type: Open-style requires protective industrial cabinetSlot Usage: Does not consume any module slots in the chassisPerformance & Protection FeaturesHold-up Time: 30ms at 60W load, 40ms at 50W load capabilityEfficiency Rating: 85% typical efficiency at full load operationOvercurrent Protection: Built-in electronic current limitingThermal Protection: Automatic shutdown on overtemperature conditionVoltage Regulation: ±2% typical line and load regulationRipple and Noise: 50mV maximum peak-to-peak at 5.1V outputPackaging & Shipping InformationPackage Contents: One 1756-PB50 DC power supply moduleShipping Methods: Global express delivery via FedEx, UPS, DHLQuality Assurance: Comprehensive 12-month warranty coverageExpert Technical Questions AnsweredHow does temperature affect the power output capacity?The output derates from 60W at 50°C to 50W at 60°C to ensure reliable operation.What is the purpose of the extended hold-up time feature?It maintains system operation during brief power interruptions for graceful shutdown.Can I use this power supply with all ControlLogix chassis sizes?Yes, it supports 4-slot through 17-slot chassis across Series A, B, and C.What wire size provides optimal performance and safety?Use 2.5 mm² (14 AWG) copper wire with 90°C insulation rating for best results.How does the current capacity change with temperature?The 5.1V output decreases from 8A at 50°C to 6A at 60°C for thermal protection.
