Allen-Bradley 1734-APB Review: Key Specs & Uses
Allen-Bradley 1734-APB: An Overview for Automation Professionals
The Allen-Bradley 1734-APB is a PROFIBUS DP network adapter from the POINT I/O series. This module acts as a vital link between POINT I/O modules and a PROFIBUS network. It serves as a master on the PointBus backplane and a slave on the PROFIBUS network. This dual role allows seamless data exchange with up to 63 I/O modules. Engineers value this adapter for its robust design and straightforward integration into existing systems.
Key Technical Specifications
The 1734-APB operates with a 24 Volts DC nominal input voltage, supporting a range from 10 to 28.8 Volts DC. Its field side power is rated at 400 milliamps, with an inrush current of 6 amps for 10 milliseconds. The module consumes 8 Watts of power and dissipates 2.8 Watts at 28.8 Volts. It provides a PointBus current of 1000 milliamps, ensuring stable logic power to connected modules. Additionally, reverse polarity protection safeguards the input, and the output voltage remains stable for 10ms during interruptions at 10V with maximum load.
Installation and Configuration
Mount the 1734-APB at the left side of a 1734 system. It converts 12 to 24 Volts DC field power into 5 Volts logic power for the PointBus. This adapter can power up to 14 I/O modules with a maximum field power of 10 Amps. For CE compliance, use a Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV) power supply. The module supports a total expansion of up to 63 modules, making it scalable for growing applications.
Practical Applications and Benefits
This adapter excels in environments requiring reliable PROFIBUS communication. It simplifies wiring by consolidating power conversion and network interfacing. Its reverse polarity protection reduces installation errors, and the wide input voltage range accommodates varying power conditions. For system integrators, the 1734-APB offers a cost-effective way to bridge PROFIBUS networks with POINT I/O modules, enhancing system flexibility.
Final Thoughts
The Allen-Bradley 1734-APB stands out as a dependable choice for PROFIBUS DP integration. Its solid power specifications and protection features ensure consistent performance. Whether upgrading an existing line or designing a new system, this adapter delivers the functionality and reliability that automation projects demand. Consider its specifications carefully to match your application requirements.