Get now: Allen-Bradley 1769-PA2 Compact I/O AC Power Supply Module
Atlantechdrives provides you the 1769-PA2, a robust and reliable AC input power supply designed specifically for the CompactLogix and MicroLogix 1500 systems. This module is essential for providing regulated DC power to the CompactBus backplane, ensuring that your processor and I/O modules have the stable energy required for deterministic automation.
- Input Voltage: 85-265V AC or 170-265V AC (Switch selectable)
- Output Current: 2.0A @ 5V DC and 0.8A @ 24V DC
- Frequency: 47-63 Hz
- Power Consumption: 100 VA
- Isolation Voltage: 265V (continuous)
- Mounting: DIN-rail or Panel Mount
Technical Architecture: Reliable Backplane Power Distribution
Purchase now the 1769-PA2 to ensure the electrical stability of your PLC rack. This module is engineered to convert standard plant AC power into the precise 5V and 24V DC rails required by the 1769-series hardware. The 1769-PA2 features an integrated slide switch to select between 120V and 240V nominal inputs, providing global compatibility for machinery exports. Its design includes advanced surge suppression and over-current protection, shielding the sensitive Logix5000 processor from line-side transients and voltage sags. When you secure the 1769-PA2, you are investing in a power engine that provides high-quality filtration, ensuring that electrical noise from the factory floor does not compromise the logic integrity or analog-to-digital conversions within your I/O bank.
Installation Advice: Power Budgeting and Slot Placement
When installing the 1769-PA2, the «Power Supply Distance Rating» is the most critical factor to consider. Most 1769 modules have a rating of 8, meaning they must be within 8 slots of the 1769-PA2. However, for high-current analog or motion modules, this distance may be effectively shorter due to voltage drop across the backplane connectors. We recommend placing the 1769-PA2 as centrally as possible if you are utilizing a large number of modules. Ensure that you have calculated the total current draw for both the 5V and 24V rails; exceeding 2.0A on the 5V rail will cause the supply to shut down or trigger a system fault. Sourcing your 1769-PA2 from Atlantechdrives ensures you receive a unit with factory-certified output regulators for maximum uptime.
Maintenance and Heat Management
The 1769-PA2 features a status LED that indicates the health of the DC output. Maintenance protocols should include a periodic check of the terminal block for tightness, as vibration can lead to arcing in high-voltage AC connections. Ensure the module has the recommended 2-inch clearance for convection cooling. If the 5V power fails, the CompactLogix CPU will immediately enter a Major Fault state to prevent erratic machine behavior. Sourcing an authentic 1769-PA2 from Atlantechdrives guarantees the hardware quality required for 24/7 industrial service.
FAQs
Q: Does the 1769-PA2 support 24V DC input?
A: No, the 1769-PA2 is for AC input only. For 24V DC input applications, use the 1769-PB2.
Q: Can I use two 1769-PA2 supplies in parallel for more current?
A: No, the 1769 backplane does not support load-sharing between power supplies in the same bank.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This standard AC power supply provides essential backplane current for compact I/O banks using the 1769-IA16 discrete input card.
