Product Overview
The Allen-Bradley 1734-EPAC is a POINT I/O expansion power supply designed to transmit field power to adjacent I/O modules. It also serves to separate field power, creating logical partitions between input and output modules or grouping modules by function. This unit supports 4 to 17 I/O modules, depending on DIN-rail position and current draw. Multiple 1734-EPAC units can be combined with POINT I/O adapters to build a complete system.
Technical Specifications Breakdown
Key parameters for the 1734-EPAC are listed below for quick reference:
| Feature | Specification |
|---|---|
| Field Power | 120 or 240 Volts AC |
| Inrush Current | 2 amps for 6 milliseconds |
| Overvoltage Protection | MOV and Fuse |
| Power Consumption | 15.1 Watts |
| Power Supply Current | 10 amps |
| Isolation Voltage | 264 Volts Continuous |
| Power Dissipation | 8.4 Watts |
| Thermal Dissipation | 28.7 BTU/hour |
Industry Applications
1. Discrete Manufacturing Lines
In automotive assembly, the 1734-EPAC supplies clean field power to sensor and actuator modules, reducing wiring complexity. The 10-amp supply current supports multiple high-draw devices without additional power supplies.
2. Process Control Segregation
For chemical processing, separating input and output field power prevents cross-talk and improves system reliability. The MOV and fuse protection guards against voltage spikes from nearby heavy machinery.
3. Modular Machine Builds
Machine builders use the 1734-EPAC to create independent power zones within a single cabinet. This allows hot-swapping of module groups without affecting the entire system.
Installation & Setup Guidance
Mount the 1734-EPAC on a DIN rail following the POINT I/O layout rules. Ensure field power is turned off before connecting or disconnecting wiring to prevent electrical arcs. Use the green indicators to verify field power status and system power availability. The unit accepts 120 or 240 Volts AC field power; confirm your supply matches the required voltage.
Maintenance & Reliability
Periodically inspect the MOV and fuse for signs of damage or wear. Keep the operating environment within specified limits: relative humidity below 95% noncondensing. The unit dissipates 28.7 BTU/hour, so ensure adequate ventilation in the enclosure.
Solving Field Power Distribution in Modular I/O Systems
In large-scale industrial automation, managing field power across multiple I/O modules can become a logistical challenge. Engineers often face voltage drops, ground loops, and the need to isolate input from output circuits for safety and noise reduction. The Allen-Bradley 1734-EPAC addresses these issues directly as a dedicated expansion power supply within the POINT I/O family.
Compatibility & Integration
The 1734-EPAC integrates with any POINT I/O adapter and works with 4 to 17 I/O modules per segment. It is industry compliant with cULus, CE, and C-Tick certifications. Use multiple units to expand system capacity.
Selection Guide & Purchasing Advice
When selecting the 1734-EPAC, consider the total current draw of your I/O modules. The 10-amp supply current handles most configurations. For larger systems, add additional expansion power supplies. AutoDCSTech stocks genuine Allen-Bradley 1734-EPAC units with fast shipping. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 1734-EPAC |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
