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- Allen-Bradley 1756-OV16E ControlLogix 16-Point Electronically Fused DC Sinking Output Module
SKU: 1756-OV16E
Allen-Bradley 1756-OV16E ControlLogix 16-Point Electronically Fused DC Sinking Output Module
The Allen-Bradley 1756-OV16E is a 16-point current-sinking digital output module for the ControlLogix platform operating between 10 and 30V DC. This single-slot module features advanced onboard electronic fusing to protect circuits against overcurrent, delivers 1A per channel maximum current, and provides diagnostic feedback directly to the controller.
Product Overview
The Allen-Bradley 1756-OV16E operates as a high-reliability digital output module within the Rockwell Automation ControlLogix platform. This single-slot module provides 16 discrete, current-sinking outputs divided into isolated groups to interface seamlessly with field-side industrial loads. Because the module incorporates built-in electronic protection, it safeguards internal circuitry against overcurrent surges and field short-circuits. Automation engineers specify this digital module to manage low-side switching configurations, ensuring dependable execution in centralized or distributed programmable logic controller (PLC) architectures.
Functional Performance and Protection Architecture
- Sinking Output TopologyThe module utilizes current-sinking solid-state switches, meaning the connected output terminal completes the path to the common return path (DC-) for the load. Consequently, the external device connects directly between the positive DC power supply voltage and the module’s output terminal.
- Advanced Electronic FusingUnlike standard output cards that require external fuse blocks or manual glass fuse replacement, this module features onboard electronic fusing. The module actively detects overcurrent faults on an individual channel basis, tripping the circuit to prevent hardware destruction and reporting the diagnostic fault directly to the ControlLogix processor backplane.
- System Integration and DiagnosisThe hardware interfaces natively with ControlLogix chassis (1756-A4 through 1756-A17) via the high-speed backplane. Technicians monitor output status through front-panel LED indicators that show individual channel states and fuse conditions. Furthermore, user-defined software configuration permits precise control over fault-state behavior, deciding whether outputs hold their last state or default to an off-state during a system communication loss.
Technical Specifications
- Manufacturer:Â Allen-Bradley / Rockwell Automation
- Platform Series:Â ControlLogix Subsystem
- Catalog Identifier:Â 1756-OV16E
- Module Subtype:Â Digital DC Sinking Output Module
- Channel Density:Â 16 Sinking Outputs
- Operating Voltage Window:Â 10 to 30V DC
- Maximum Output Current: 1.0 A per channel @ 30 °C (derated linearly based on temperature)
- Circuit Protection:Â Electronic Fusing Onboard
- Backplane Power Draw:Â 250 mA @ 5.1V DC and 2 mA @ 24V DC
- Physical Footprint:Â 3.5 cm x 14.0 cm x 14.5 cm
- Net Weight:Â 0.26 kg
- Harmonized System Code (HS Code):Â 8537101190
Industrial Applications
- High-speed machine control for triggering low-side solenoids, control relays, and indicators.
- Process automation facilities regulating field-side DC control valves and actuator circuits.
- Automated manufacturing environments seeking to reduce cabinet wiring space by omitting external fuse terminal blocks.
- Legacy ControlLogix system maintenance and parts replenishment for continuous infrastructure operation.
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