Allen Bradley 1771-P5 POWER SUPPLY

DESCRIPTION

Input power: 24 VDC, 3 A

Output power: 5 VDC system bus, 5 A max

Hold-up time: ≥ 10 ms @ full load

Efficiency: 85 % typical @ 25 °C

Protection: auto-reset short-circuit, overload & thermal

Isolation: input-to-output 500 V RMS

Operating temp: 0…+60 °C

APPLICATIONS

Back-plane power for PLC-5/20, -5/30, -5/40 processors—delivers rock-solid 5 V logic supply so the CPU can keep scanning while other racks cycle on/off; the 10 ms hold-up prevents nuisance faults during plant power dips.

Remote I/O driver in conveyor systems—one 1771-P5 per rack feeds up to 16 I/O modules on a 30 m RIO cable, eliminating extra 24 V field supplies and cutting panel wiring by 30 %.

Upgrade spare for legacy water-treatment plants—drop-in replacement keeps 1980s PLC-5 architecture alive without rewiring, saving weeks of downtime and costly control-migration budgets.

Test-bench power for automation labs—built-in current limit and auto-reset let students hot-plug modules while protecting the back-plane, making it the preferred training supply in technical colleges worldwide.

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