Allen Bradley 1756-PA75K ControlLogix AC power supply module

FAQ

Q1: What is the purpose of the 1756‑PA75K module?
It supplies DC power to the ControlLogix chassis backplane, enabling the controller and I/O modules to operate.

Q2: What input voltage range does it accept?
It supports a wide AC range from 85 V to 265 V AC at 47 – 63 Hz.

Q3: How much power does this power supply deliver?
It provides up to 75 W of total output power at up to 60 °C.

Q4: What DC output rails and currents are available?
The built‑in rails deliver 1.2 V @ 1.5 A, 3.3 V @ 4 A, 5.1 V @ 13 A, and 24 V @ 2.8 A.

Q5: Can it be used in a redundant power configuration?
No — the 1756‑PA75K is a non‑redundant power supply.

Q6: What are the hold‑up time characteristics?
It maintains DC output for a short time after AC loss: ~2 cycles @ 85 VAC, ~6 cycles @ 120 VAC, ~20 cycles @ 220 VAC (at 60 Hz).

Q7: Where is this power supply installed?
It installs in the dedicated left‑side power supply slot of a ControlLogix chassis.

Q8: What are the physical dimensions and weight?
Dimensions are about 140 mm × 112 mm × 145 mm and the weight is around 1.1 kg (2.5 lb).

1756-PA75K Allen Bradley ControlLogix AC power supply module

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