The Allen-Bradley 1771-P5 provides regulated 5V DC power directly to the 1771 I/O backplane. This module converts a 24V DC input into a stable supply for processors and I/O modules. It fits perfectly into universal 1771 chassis to support complex industrial automation tasks. Furthermore, the unit supports parallel configurations for systems requiring higher current or redundancy. By using a 1771-CT cable, two 1771-P5 modules can work together effectively.
This power supply includes advanced features to ensure system stability during electrical fluctuations. It offers an adjustable power loss delay to prevent immediate processor shutdown. Technicians can set this delay to either 13.6ms or 60ms depending on system needs. Consequently, the 1771-P5 maintains operational integrity even during brief input power interruptions.
Primary Technical Specifications
- Manufacturer: Allen-Bradley / Rockwell Automation
- Model Number: 1771-P5
- Product Type: Chassis-Mounted DC Power Supply
- Input Voltage Range: 20.5V to 30V DC
- Output Voltage: 5.06V DC
- Maximum Output Current: 8 Amps
- Circuit Isolation: 1500V AC (RMS) / 2160V DC
- Protection: Built-in 5A, 32V Normal Blow Fuse
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Humidity Range: 5% to 95% (Non-condensing)
- Unit Weight: 1.18 kg (Approximately 2.6 lbs)
- Mounting: Universal 1771 Chassis (Left-most Slot)
Industrial Protection and Durability
Safety remains a top priority in the engineering of the 1771-P5 hardware. The module features rigorous circuit isolation between the input and the chassis ground. This isolation protects the sensitive PLC backplane from external electrical surges. Additionally, the unit includes a standard 5A fuse to prevent damage from overcurrent conditions. These protective measures ensure long-term reliability in demanding factory environments.
The mechanical design includes a keying system to prevent incorrect module installation. Each unit comes with a keying band for the backplane connector. Furthermore, the 1771-P5 carries UL and CSA certifications for industrial compliance. It functions at full capacity across its entire temperature range without de-rating. This makes the module ideal for high-availability manufacturing and processing plants.
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