1771-P4S Allen-Bradley PLC 5 Automation Platform Power Supply

Product Parameters

Basic Information:

Manufacturer: Allen-Bradley (Rockwell Automation)

Model: 1771-P4S (Series A, B, etc.)

Type: Power Supply Module

Compatible Systems: PLC-5 series, compatible with 1771-A1B, 1771-A2B, 1771-A3B, 1771-A3B1, and 1771-A4B Universal I/O chassis

Installation: Occupies one slot in the 1771 I/O chassis; can be installed in any slot not reserved for processors or adapters

Electrical Parameters:

Input Voltage: 97–132V AC

Input Frequency: 47–63 Hz

Nominal Input Voltage: 120V AC

Input Current: 0.88 A (typical)

Input Power:

Real Input Power: 59 W (maximum)

Apparent Input Power: 89 VA

Output Voltage: 5.06V DC

Output Current: 8 A (maximum) at 5V DC

Power Dissipation:

Minimum: 4 W at 2 A

Maximum: 17 W at 8 A

Thermal Dissipation:

Minimum: 13.7 BTU/hour

Maximum: 47.8 BTU/hour

Adjacent Slot Power Dissipation: 10 W (maximum)

Fuse: 1.5 A, 250V AC slow-blow (replaceable, e.g., Bussmann MDL 1.5 or Littelfuse 313001.5)

Branch Circuit Protection: 15 A (maximum)

Connection and Wiring:

Wiring Arm: 5-position terminal block (Allen-Bradley P/N 941274-05, Wago P/N 231-205/000-008)

Wire Size: 14 AWG (maximum), solid or stranded copper wire with 3/64-inch insulation thickness

Keying Positions: Pins 12–14 and 20–22 on the backplane top connector (prevents incorrect installation)

Cable Support: Supports parallel cabling with another 1771-P4S for increased output (up to 20 A at 60°C or 24 A at 55°C per chassis)

Environmental Specifications:

Operating Temperature: 0°C to 60°C (32°F to 140°F)

Storage Temperature: -40°C to 85°C (-40°F to 185°F)

Relative Humidity: 5% to 95% (non-condensing)

Enclosure: Open-style

Other:

Indicators: P/S ACTIVE LED (green) for power supply status

Certifications: UL, CSA, c-UL (Class I, Division 2, Groups A, B, C, D), CE, C-TICK (Australian Radio Communications Act)

Weight: Approximately 0.84 kg (1.85 lbs) or 1.04 kg (2.3 lbs), depending on source

Power Loss Delay Time: 13.6 ms ± 3.6 ms (from input power loss to processor disable)

Functions

Backplane Power Supply:

Provides a stable 5.06V DC output at up to 8 A to power the backplane of 1771 I/O chassis, enabling operation of PLC-5 modules (e.g., I/O modules, processors, or adapters).

Supports parallel configuration with another 1771-P4S to increase output capacity for larger systems.

Flexible Installation:

Single-slot design allows installation in any compatible 1771 I/O chassis slot, simplifying system configuration.

Keying mechanism ensures correct module placement, reducing installation errors.

Protection and Safety:

Equipped with a 1.5 A, 250V slow-blow fuse for circuit protection.

Voltage isolation tested at 2160V DC for 1 second ensures reliability in industrial environments.

Branch circuit protection at 15 A prevents overcurrent damage.

Status Monitoring:

Features a P/S ACTIVE LED to indicate operational status, aiding in troubleshooting and maintenance.

Supports local or remote sensing configurations for flexible power distribution.

System Integration:

Compatible with ControlNet, Remote I/O, and Extended Local I/O networks, enabling integration into distributed control systems.

Works with PLC-5 processors and adapters, as well as Mini-PLC-2/02, 2/05, 2/16, and 2/17 controllers (with specific cables like 1771-CP1, CP2, or CP3).

Reliability:

Designed for harsh industrial environments with a wide operating temperature range and non-condensing humidity tolerance.

Open enclosure design supports convection cooling, requiring proper placement (above or beside the chassis) for optimal heat dissipation.

Application Scenarios

Industrial Automation:

Powers PLC-5 I/O chassis in automated production lines, such as automotive manufacturing, packaging systems, or material handling, ensuring reliable operation of I/O modules and processors.

Supports systems requiring high current (up to 8 A per module or 20–24 A in parallel) for large-scale control tasks.

Distributed Control Systems:

Used in distributed I/O setups via Remote I/O or ControlNet networks, powering remote chassis in industries like energy, chemical processing, or water treatment.

Legacy System Maintenance:

Essential for maintaining PLC-5 systems in facilities with existing 1771 I/O chassis, particularly where upgrading to modern platforms is not yet feasible.

Serves as a bridge for transitioning to ControlLogix or CompactLogix systems while preserving existing infrastructure.

High-Power I/O Applications:Ideal for systems with high-density I/O modules requiring significant backplane power, such as in complex control systems with multiple analog or digital modules.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

Bou L(Sales Manager)            

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Tina(Sales Specialist)       

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Doris(Sales Specialist)       

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