Product Description
The Allen-Bradley 1734-OB4E is a modular I/O module offering configurable digital and analog selections, flexible mounting (horizontal or vertical without de-rating), and a choice of network interfaces and terminal styles. It features up to 8 individually configurable thermocouple and RTD inputs/outputs with onboard scaling and input filters, along with 4 electronically protected, enhanced current sourcing outputs. Key specifications include: conducted radio frequency immunity of 10Vrms, wire size compatibility of 2.5-0.34mm copper, compact dimensions (2.21 x 0.47 x 2.97 inches), ESD immunity (6kV contact/8kV air), comprehensive LED status indicators, 50V continuous isolation voltage (tested to 2500V DC), low leakage current (0.5mA max), fast response time (0.1ms max), and a wide operating temperature range (-20 to 55C).
Is Your Device Showing These Signs?
The Allen Bradley 1734-OB4E POINT I/O module commonly experiences issues such as output failures due to short circuits or excessive load, requiring troubleshooting of field wiring and connected devices. Communication errors arise from incorrect network configuration, corrupted EDS files, or backplane connectivity problems; verify IP address settings, update EDS files, and inspect POINTBus connections. Module faults occur due to power supply fluctuations or exceeding environmental specifications; ensure proper power supply voltage and adherence to temperature/humidity ratings. Firmware corruption leads to unpredictable behavior; perform a firmware upgrade using ControlFlash software. Resolve these issues through systematic diagnostics, component replacement, and adherence to Allen Bradley's recommended practices.
Technical specifications
The Allen-Bradley 1734-OB4E is a versatile modular I/O module with configurable digital and analog options, flexible mounting, and various network/terminal choices. It supports up to 8 configurable thermocouple/RTD inputs/outputs with scaling and filtering, plus 4 protected current sourcing outputs. Key features include high RF and ESD immunity, wide wire size compatibility, compact size, comprehensive LED indicators, 50V continuous isolation, low leakage current, fast response time, and a broad operating temperature range.
Our Repair Process for the
1734-OB4E
Our repair process for the Allen Bradley 1734-OB4E POINT I/O module begins with a thorough diagnostic evaluation to pinpoint the root cause of the failure, whether it stems from output failures, communication errors, module faults, or firmware corruption. Field wiring and connected devices are meticulously inspected for short circuits or excessive loads, and all network configurations, IP address settings, and EDS files are verified for accuracy. The POINTBus connections are examined for proper backplane connectivity, and the module's power supply voltage is confirmed to be within specified limits, alongside adherence to temperature and humidity ratings. If firmware corruption is suspected, a firmware upgrade is executed using ControlFlash software. Component replacement is performed as needed, and all repairs adhere strictly to Allen Bradley's recommended practices to ensure optimal performance and reliability.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















