Product Overview
The Allen-Bradley 1794-OV16P is a Flex I/O Digital Sinking Output Module designed for reliable discrete output control in industrial automation. With 16 sinking outputs and electronic protection against short-circuits, overloads, and high temperatures, this module ensures robust operation in demanding environments. It automatically recovers after fault removal, minimizing downtime.
Technical Specifications Breakdown
Key parameters for the 1794-OV16P are listed below for quick reference:
| Feature | Specification |
|---|---|
| Output Type | Digital Sinking Output Module |
| Number of Outputs | 16 Sinking (Protected) |
| On-state Voltage (nom.) | 24V DC |
| Output Current Rating | 8.0A |
| On-state Current (max. per channel) | 500mA |
| Off-state Leakage (max.) | 0.5mA |
| On-state Voltage Drop (max.) | 0.2V DC |
| Flexbus Current | 80mA |
| Power Dissipation (max.) | 4.2W @ 31.2V DC |
| Thermal Dissipation (max.) | 14.3 BTU/hr. @ 31.2V DC |
Industry Applications
Its 500mA per channel capacity suits solenoid valves, indicator lights, and small relays. The electronic protection reduces unplanned stops, improving operational ROI.
Installation & Setup Guidance
Mount the module by snapping it onto a DIN rail. Use compatible terminal bases 1794-TB3 or 1794-TB3S for field wiring. The module connects to the I/O bus via the terminal base, allowing insertion or removal under power without disturbing other modules. Ensure external power supply voltage is 10 to 31.2V DC with 5% AC ripple and 20 to 65mA current.
Maintenance & Reliability
Inspect the module periodically for dust accumulation and ensure proper ventilation to maintain thermal dissipation below 14.3 BTU/hr. The module's automatic recovery feature reduces maintenance intervention. For extreme environments, consider XT versions to lower panel and maintenance costs.
Compatibility & Integration
The 1794-OV16P integrates with Rockwell Automation control systems via ControlNet, DeviceNet, EtherNet/IP, or Universal Remote I/O communication options. It fits within the Flex I/O architecture, simplifying system expansion.
Selection Guide & Purchasing Advice
When selecting this module, verify your output load requirements against the 500mA per channel and 8A total limits. For applications needing high-side switching, consider sourcing modules. AutoDCSTech stocks the 1794-OV16P and can advise on lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Troubleshooting & Common Issues
If outputs fail to energize, check the external power supply voltage (10 to 31.2V DC) and ensure the module is properly seated on the terminal base. Yellow LED indicators per channel help diagnose signal issues. If the module shuts down due to overload or short-circuit, remove the fault condition; the module recovers automatically without processor intervention.
Availability & Condition at AutoDCSTech
| Part Number | 1794-OV16P |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
