The Allen-Bradley 1734-APB serves as a critical PROFIBUS DP network adapter. This unit bridges your POINT I/O system directly to a PROFIBUS network. It converts field power into 5V logic for connected modules. Engineers use this module for reliable distributed control architectures. The adapter supports a wide input voltage range. You can apply from 10 to 28.8 Volts DC safely. This flexibility makes it suitable for global installations. The module handles an inrush current of 6 amps. This ensures stable startup under heavy loads. Every system benefits from its reverse polarity protection. This feature prevents damage during installation errors.
Product Procurement & Buyer Guide
The 1734-APB adapter simplifies purchasing decisions for control engineers. You need a module that communicates with PROFIBUS masters. This unit acts as a slave on the PROFIBUS network. It simultaneously functions as a master on the PointBus backplane. This dual role allows seamless data exchange between networks. The adapter communicates with up to 63 POINT I/O modules. This capacity supports large distributed control systems effectively. Procurement teams value its standard 24V DC input voltage. This matches common industrial power supplies perfectly. The module's power consumption sits at 8 Watts maximum. This low draw reduces overall cabinet heat generation. Its power dissipation is only 2.8 Watts at 28.8 Volts. This efficiency extends the lifespan of surrounding components.
You must match the adapter with an appropriate power supply. The unit requires a Safety Extra Low Voltage source. Alternatively, you can use an NE Class 2 supply. A Protected Extra Low Voltage supply also works well. This compliance meets CE Low Voltage Directives easily. The adapter powers up to 14 I/O modules directly. It delivers a maximum of 10 Amps of field power. The module itself draws only 75mA from the field supply. This leaves ample power for your input and output modules. The PointBus provides 1000 milliamps at 5 Volts DC. This current supports all connected I/O modules reliably. The output voltage stays stable for 10ms during interruptions. This hold-up time prevents data loss during brief power dips.
Step-by-Step User & Installation Guide
Install the 1734-APB adapter at the left side of your system. This position establishes it as the network gateway. First, mount the adapter onto the DIN rail securely. Ensure the locking mechanism clicks into place firmly. Next, connect your 24 Volts DC field power supply. Observe the reverse polarity protection for safe wiring. The adapter accepts a nominal 24V DC input voltage. It operates across a 10 to 28.8 Volts DC range. Connect the PROFIBUS DP cable to the adapter's port. Use standard PROFIBUS connectors for reliable communication. The adapter then converts field power to 5 Volts DC. This PointBus power supplies logic to all modules.
You must calculate your total system power requirements. The adapter provides a PointBus current of 1000 milliamps. Each connected module draws from this 5V supply. The unit can power up to 14 I/O modules directly. For larger systems, add an external power supply module. The inrush current reaches 6 amps for 10 milliseconds. Ensure your power supply can handle this initial surge. The output voltage remains within spec for 10ms at 10V. This occurs under maximum load during input dropout. This feature maintains system integrity during short interruptions. Always use a SELV or PELV power supply for compliance. This meets CE Low Voltage Directives standards globally.
Logistics & Standard Packaging Details
- 1x Allen-Bradley 1734-APB POINT I/O PROFIBUS DP Network Adapter
- 1x Removable terminal block for field power connections
- 1x Product documentation and installation guide
- Express delivery shipping is available via FedEx, UPS, and DHL
