Products Description
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Allen-Bradley 1756-PA50 ControlLogix AC Power Supply – Technical Specifications and FAQ
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley (Rockwell Automation) |
| Model | 1756-PA50 |
| Product Type | ControlLogix Standard AC Power Supply |
| Function | Supplies DC power to the ControlLogix chassis backplane |
| Input Voltage Range | 85–265 V AC |
| Nominal Input Voltage | 120/240 V AC |
| Input Frequency | 47–63 Hz |
| Maximum Inrush Current | 20 A |
| Output Voltage | 1.2 V DC, 3.3 V DC, 5.1 V DC, 24 V DC |
| Output Current at 1.2 V DC | 1.5 A |
| Output Current at 3.3 V DC | 2 A |
| Output Current at 5.1 V DC | 8 A at 50°C; 6 A at 60°C |
| Output Current at 24 V DC | 2.5 A at 50°C; 2.0 A at 60°C |
| Maximum Output Power | 60 W at 0–50°C; 50 W at 0–60°C |
| Maximum Input Power | 81 W at 50°C; 68 W at 60°C |
| Isolation Voltage | 250 V continuous, reinforced insulation between power input and backplane |
| Redundancy Support | No |
| Mounting Position | Left side of ControlLogix 1756 chassis |
| Compatible Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| Operating Temperature | 0 to 60°C |
| Relative Humidity | 5–95%, non-condensing |
| Dimensions (H × W × D) | 140 × 78 × 145 mm |
| Weight | Approx. 0.77 kg |
| Country of Origin | USA (official Rockwell Automation listing) |
| Lifecycle Status | Active |
FAQ
FAQ
Q1: What is the Allen-Bradley 1756-PA50 used for?
A: It is an AC power supply designed to provide DC power to the backplane of a ControlLogix 1756 chassis.
Q2: What is the input voltage range of the 1756-PA50?
A: It accepts an AC input voltage range of 85–265 V AC, with nominal input ratings of 120/240 V AC.
Q3: What DC output voltages does the 1756-PA50 provide?
A: It provides 1.2 V, 3.3 V, 5.1 V, and 24 V DC outputs for powering ControlLogix modules.
Q4: What is the maximum output power?
A: The maximum output power is 60 W at temperatures up to 50°C and 50 W at temperatures up to 60°C.
Q5: Is the 1756-PA50 a redundant power supply?
A: No. It is a standard, non-redundant AC power supply.
Q6: Which ControlLogix chassis are compatible with the 1756-PA50?
A: It is compatible with 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17 chassis.
Q7: What are the dimensions and weight of the 1756-PA50?
A: Its dimensions are approximately 140 × 78 × 145 mm (H × W × D), and its weight is approximately 0.77 kg, excluding packaging.
Q8: Is the 1756-PA50 still available?
A: Yes. Rockwell Automation currently lists the 1756-PA50 as an active product.
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Packing & Delivery
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