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Allen-Bradley 1746-P4 is a power module in Rockwell Automation's SLC 500 programmable controller series, designed to provide stable and reliable DC power for small and medium-sized automation control systems. As a core component of the SLC 500 rack, this module converts 120/240V AC power to 24V DC power, supplying power to controllers, I/O modules, and peripheral devices. It features multiple protection functions and wide voltage adaptability, making it suitable for various automation equipment in industrial environments to ensure continuous system operation.
- Input Specifications:Supports 100-240V AC wide voltage input, frequency 47-63Hz, input current 0.8A (120V AC)/0.4A (240V AC), inrush current ≤40A (20ms).
- Output Specifications:24V DC output, rated current 4A, output voltage accuracy ±5%, ripple voltage ≤100mV peak-to-peak, output power 96W.
- Protection Functions:Overcurrent protection (current limit 5.5A), short-circuit protection (automatic recovery), overvoltage protection (triggered when output voltage ≥28V).
- Operating Environment:Operating temperature 0℃-60℃, storage temperature -40℃-85℃, relative humidity 5%-95% (non-condensing), protection class IP20 (must be installed in control cabinet).
- Mechanical Specifications:Width×height×depth approximately 130mm×80mm×160mm, weight approximately 1.2kg, standard DIN rail mounting, compatible with 1746 series racks.
- Efficiency and Power Consumption:Typical efficiency ≥85%, no-load power consumption ≤5W, compliant with energy efficiency standards.
- Certification Standards:UL 508, CSA C22.2 No.14, CE certified, compliant with IEC 61131-2 industrial control equipment standards.
- Wide Voltage Input Compatibility:100-240V AC global universal input range, no adjustment required to adapt to grid voltages in different regions, simplifying equipment selection for multinational projects.
- Stable Output Performance:±5% voltage accuracy and low ripple design provide clean power for SLC 500 controllers and I/O modules, ensuring accuracy of digital and analog signal processing.
- Multiple Protection Mechanisms:Overcurrent, short-circuit, and overvoltage protection comprehensively safeguard the module and load, reducing system downtime caused by power supply failures.
- Compact Integrated Design:Matches the dimensions of SLC 500 series modules, seamlessly embedding into standard racks, saving control cabinet space and simplifying system wiring.
- Industrial-Grade Reliability:Wide temperature operating range and anti-vibration design (5g acceleration, 10-500Hz) adapt to harsh industrial environments with dust and humidity fluctuations.
- Small and Medium Automation Production Lines:Powers SLC 500 controllers and I/O modules in packaging machinery and food processing equipment, supporting logical control and action execution of the equipment.
- Municipal Equipment Control:Used for pump control in urban water supply systems and liquid level monitoring in wastewater treatment plants, ensuring stable operation of equipment under different grid environments.
- Material Handling Systems:Powers control systems for conveyors and elevators, supporting automated material handling and sorting.
- Machine Tool Auxiliary Control:As an auxiliary power supply for CNC machine tools, powers peripheral devices such as cooling systems and tool magazine controls, ensuring overall machine tool stability.
- OEM Equipment Integration:Integrated into small control systems of automation equipment manufacturers, providing standardized power solutions for equipment.




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