Configured for discrete DC output execution in distributed I/O architectures, the Allen-Bradley 1734-OB4E (1734OB4E 4 Channel Output Module) provides direct physical/electrical execution.

Catalog Designation & Series Matrix

• Catalog Number: 1734-OB4E
• Alternate ID: 1734OB4E
• Hardware Revision: 1734-OB4E/C
• Product Family: Point I/O

Hardware Specifications

Network Backplane Communication Architecture

The module interfaces with deterministic networks via backplane bus communication velocity licenses embedded in the adapter node. It maintains high-speed I/O density scaling across distributed drops, supporting firmware flash compatibility for seamless integration into existing control architectures. Data transfer across the backplane occurs synchronously with the master controller scan cycle.

Ordering Information

• 1 1734-OB4E 4 Channel Output Module
• 1 Removable terminal block housing base

Mechanical Mounting and Wiring Procedures

• DIN Rail Securing: Mount the module vertically onto a standard 35 mm DIN rail, ensuring the locking mechanism engages securely with the rail profile.
• Terminal Termination: Strip field wiring to expose 10 mm of bare copper, inserting solid or stranded conductors directly into the spring-clamp terminal points.
• Shield Grounding: Terminate cable shields to the designated functional earth ground bar to suppress electromagnetic interference.

Frequently Asked Questions

• Q: Does the 1734-OB4E support hot-swapping during active operation?
• A: Yes, the module supports removal and insertion under power (RIUP) when mounted on an approved terminal base unit within a grounded enclosure.
• Q: What is the nominal output voltage rating of this module?
• A: The module supplies a nominal 24 VDC output current-sourcing execution across its four discrete output channels.
• Q: How does the module handle short-circuit conditions on the outputs?
• A: Each output channel features built-in electronic protection that trips upon detecting an overcurrent event, isolating the fault independently.
• Q: What type of backplane current is required to power internal logic?
• A: Internal logic power is drawn directly from the Point I/O backplane bus adapter at 5 VDC.
• Q: Can this module operate in hazardous industrial environments?
• A: It is rated for standard industrial environments when housed within a properly sealed NEMA or IP-rated cabinet enclosure.
• Q: What is the maximum output current capacity per channel?
• A: Each individual channel is designed to source up to 1.0 A of continuous current at specified operating temperatures.
• Q: Are configuration parameters stored locally on the module?
• A: Configuration data is downloaded dynamically from the master PLC controller upon power-up or network reconnection.
• Q: How are channel status indicators displayed physically?
• A: Dual-color LED indicators on the front faceplate display operational status and individual channel fault conditions.