Allen-Bradley 1769-PB4 Compact I/O Expansion Power Supply

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Allen-Bradley 1769-PB4 Compact I/O Expansion Power Supply Product Information

Product Description

Detailed Parameters

• Output Specifications: 24V DC output, rated current 4A, peak current 6A (10s duration), output voltage adjustment range 22.8V~25.2V DC.
• Input Power Supply: Supports 100V~240V AC wide voltage input (50/60Hz), input current 1.5A (100V AC)/0.8A (240V AC).
• Protection Functions: Equipped with overcurrent protection (trip current 5.5A±10%, automatic recovery), overvoltage protection (28V DC±2V), short-circuit protection (hiccup mode, automatic restart after fault elimination).
• Efficiency and Power Consumption: Typical efficiency ≥85% (at full load), no-load power consumption ≤5W, compliant with energy efficiency standards.
• Operating Environment: Operating temperature 0℃~60℃, storage temperature -40℃~85℃, relative humidity 5%~95% (non-condensing), protection class IP20 (suitable for control cabinet installation).
• Dimensions: Width×height×depth approximately 32mm×110mm×86mm, installed on 1769 series standard rails, compatible with Compact I/O racks.
• Heat Dissipation: Natural convection cooling, no fan required, suitable for industrial environments with 较多 dust.
• Certification Standards: UL 508, CSA C22.2 No.14, CE certified, compliant with IEC 61010-1 safety standards.

Advantages and Features

• Flexible Power Expansion: 4A rated output current can support 4 high-power consumption I/O modules (such as analog modules, communication modules), complementing the main controller power supply to avoid single power supply overload.
• Wide Voltage Input Compatibility: 100V~240V AC global universal input range, no adjustment required to adapt to grid voltages in different regions, simplifying equipment selection for multinational projects.
• Multiple Safety Protections: Overcurrent, overvoltage and short-circuit protection functions comprehensively protect I/O modules and load equipment, reducing system downtime caused by power supply faults.
• Compact Integrated Design: 32mm ultra-thin width matches the size of 1769 series modules, can be seamlessly embedded into Compact I/O racks, saving control cabinet space and simplifying system wiring.
• Industrial-Grade Stable Operation: Wide temperature operating range and fanless design ensure reliable operation in high-temperature and dusty industrial environments, with mean time between failures (MTBF) ≥10⁶ hours.

Application Fields

• CompactLogix System Expansion: In the I/O expansion rack of CompactLogix L3x series controllers, provides independent power for 1769 series digital and analog modules, avoiding overload of the main controller power supply.
• Distributed I/O Stations: Serves as the power supply unit of remote I/O cabinets, supplying power to distributed sensors and actuators, suitable for production lines requiring distributed control such as food and beverage, pharmaceutical packaging.
• Small Automation Equipment: Powers control units of labeling machines and small injection molding machines, integrated into equipment control cabinets, supporting compact design of equipment.
• Machine Vision Systems: Provides stable 24V DC power for peripherals such as vision sensors and light source controllers, ensuring consistency of image acquisition.
• Laboratory Automation: Powers control loops and measuring instruments in small test benches and testing equipment, meeting the power stability requirements of high-precision experimental environments.

Notes

• During installation, ensure a firm backplane connection with 1769 I/O modules, rail grounding resistance ≤4Ω, and separate wiring of input and output cables to avoid interference.
• The input power supply must be equipped with a suitable circuit breaker (10A slow-blow type recommended), and each load in the output circuit is recommended to be connected in series with a fuse (selected according to module current requirements).
• Avoid installation in locations where the ambient temperature exceeds 60℃; if ventilation is poor, add heat dissipation holes or fans to prevent power supply overheating protection triggering.
• Before wiring, confirm that the input voltage matches the on-site power grid (100V/240V switching requires no hardware settings, automatic adaptation), and the output positive and negative polarities must not be reversed.
• When stored for a long time, it should be placed in a dry environment (humidity ≤60%); check whether the power connector is oxidized before installation, and clean the contacts with anhydrous alcohol if necessary.

The structure and details of the product：

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