Excellent PLC
Product Introduction
The Allen Bradley 1734-EPAC Point I/O AC Expansion Power Supply is an AC-powered expansion module designed for use within the POINT I/O distributed control system developed by Rockwell Automation. It is specifically engineered to extend field-side power capacity and maintain stable backplane power when additional I/O modules are introduced into the system.
In modular automation architectures, power distribution becomes a critical factor as the number of connected modules increases. The 1734-EPAC provides a reliable way to segment and reinforce power supply sections, ensuring that downstream modules receive consistent voltage without overloading the primary power source. This makes it particularly useful in large or expanding systems where scalability is required.
The module adopts an open-style design and supports DIN rail installation, allowing for fast integration into standard industrial control cabinets. Its compact footprint and straightforward wiring make it suitable for both new installations and retrofit projects.
Product Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 120/240 VAC |
| Input Current | 100/200 mA |
| Output Voltage (POINTBus) | 5 VDC |
| Output Current | 1.3 A |
| Module Type | AC Expansion Power Supply |
| Design Type | Open Style |
| Mounting Type | DIN Rail Mounted |
| Field Side Power Requirements | Supports segmented power expansion |
| Isolation | Electrical isolation between segments |
| Operating Temperature | 0 to 55°C |
| Storage Temperature | -40 to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Certifications | CE, UL, CSA |
| Dimensions | 133.1 x 25.3 x 79.8 mm |
| Weight | 0.182 kg |
Applications
● Used in AC-powered POINT I/O systems where expansion of field power is necessary
● Suitable for distributed automation architectures requiring reliable backplane power extension
● Applied in industrial production lines, including packaging, assembly, and conveying systems
● Ideal for control panels with mixed AC infrastructure, reducing the need for additional DC conversion equipment
● Common in process industries where segmented power improves fault tolerance and system uptime
● Used in remote I/O stations to support scalable and modular system layouts
Advantages
● Allows direct use of AC power, eliminating the need for separate DC power supplies in certain systems
● Provides stable 5 VDC output to the POINTBus, ensuring consistent communication and module operation
● Supports modular system expansion, making it easy to add I/O modules without redesigning the power structure
● Enhances system reliability through power segmentation and isolation
● Compact and DIN rail mountable, simplifying installation in tight control cabinets
● Open-style construction enables efficient heat dissipation in industrial environments
