1794-OV16 Flex I/O Digital Sinking Output Module
1794-OV16 is a 16-channel sinking output module from Allen-Bradley. It operates at 24V DC nominal voltage. This module is part of the Flex I/O 1794 series. It offers 500mA per channel with 8A total module current. The on-state voltage range is 10 to 31.2V DC. It is an open-style module with IP20 protection. You can install or remove it under power. This saves time and avoids system restarts. The 1794-OV16 has 16 yellow LED status indicators. Each LED shows the channel output signal. It supports extreme environment XT versions. These reduce panel and maintenance costs.
Technical Specifications
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1794-OV16 |
| Product Type | Flex I/O Digital Sinking Output Module |
| Number of Outputs | 16 (Sinking) |
| Nominal On-state Voltage | 24V DC |
| On-state Voltage Range | 10 to 31.2V DC |
| Max Off-state Voltage | 31.2V DC |
| Max On-state Current | 500mA per channel, 8A per module |
| Off-state Leakage | 0.5mA max |
| Max On-state Voltage Drop | 0.2V DC max |
| Output Delay (Off-to-On) | 0.5ms max |
| Output Delay (On-to-Off) | 1.0ms max |
| Power Dissipation | 4.2W @ 31.2V DC max |
| Thermal Dissipation | 14.3 BTU/hr @ 31.2V DC max |
| Flexbus Current | 80mA |
| External Power Supply | 10-31.2V DC, 5% AC ripple, 20-65mA |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Relative Humidity | 5 to 95% noncondensing |
| Environmental Protection | IP20 |
| Mounting | DIN Rail |
| Compatible Base Units | 1794-TB3, 1794-TB3S |
Key Features & Benefits
- 16 sinking outputs with 500mA per channel for robust field control.
- Wide voltage range 10-31.2V DC accommodates various supply levels.
- Fast switching 0.5ms Off-to-On, 1.0ms On-to-Off for precise applications.
- LED indicators per channel for real-time output status diagnostics.
- Hot swap capability allows module removal without system power-down.
- Supports multiple networks ControlNet, DeviceNet, EtherNet/IP, Universal Remote I/O.
- XT extreme versions available for harsh environment operation.
Installation & Commissioning
Mount the 1794-OV16 on a standard DIN rail. Snap it onto the terminal base unit. Connect field wiring to the 1794-TB3 or 1794-TB3S base. No direct wiring to the I/O module is needed. This simplifies installation. Commissioning is quick with automatic bus detection. The module is removable under power. This reduces downtime during maintenance. LED indicators assist with initial check-out.
Diagnostics & Maintenance
Each of the 16 channels has a yellow LED. The LED indicates the output status. This allows rapid fault finding. The module supports module status reporting via the backplane. No special tools are required for replacement. Routine cleaning of the open module is recommended. The IP20 design protects against solid objects >12mm.
Compatibility & Communication
The 1794-OV16 works with the Flex I/O 1794 system. It is compatible with Modicon Quantum and other major PLCs via network adapters. Supported networks include ControlNet, DeviceNet, EtherNet/IP, and Universal Remote I/O. Use the 1794-TB3 or 1794-TB3S terminal bases. The module uses the Flexbus for backplane communication.
Typical Applications
- Discrete output control in conveyor systems.
- Actuator and solenoid valve control.
- Indicator light and alarm signaling.
- Machine automation and packaging lines.
- Process control valve position feedback.
Certifications & Standards
- UL Listed, CSA Certified
- CE Marked (European Compliance)
- IP20 Environmental Protection
- RoHS Compliant
FAQ
Q: Can I replace the module while power is on?
Yes, the 1794-OV16 supports hot swapping. This minimizes system downtime.
Q: What is the maximum output current per channel?
Each channel can source up to 500mA. The total module current is limited to 8A.
Q: Which terminal base units are compatible?
Use the 1794-TB3 or 1794-TB3S terminal base units for this module.
Q: Is this module suitable for DC or AC loads?
The 1794-OV16 is a DC sinking output module. It is designed for DC loads only.
Packaging & Delivery
Package includes: 1 x 1794-OV16 module, installation instructions (paper or digital). The module is shipped in anti-static packaging. Delivery via FedEx, UPS, or DHL – tracked and insured. Shipping is worldwide with global shipment support. 12-month warranty included.
Why Buy From Oiltech Controls?
- Over 15 years of expertise in industrial automation spares.
- Global shipment support with reliable carriers.
- Tested industrial surplus and refurbished options available.
- Comprehensive 12-month warranty on all products.
- Technical verification performed before every shipment.
- Support for obsolete control systems and legacy parts.
For inquiries, contact us at info@oiltechcontrols.com or via +86 158 8020 0923 (WhatsApp).
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