1794-OC16 Flex I/O Digital Output Module
Allen-Bradley 1794-OC16 | 16-Channel Sourcing Output | 48V DC Nominal | FLEX I/O Series
Product Description
The 1794-OC16 is a FLEX I/O digital output module from Allen-Bradley. It provides 16 non-isolated sourcing outputs. The module operates with a nominal 48V DC supply. It supports a wide voltage range from 30V DC to 60V DC. Each channel delivers up to 500mA. The module mounts on terminal base units like 1794-TB3 or 1794-TB3S. It is keyed for position 2. This design allows easy module swap without rewiring. It is ideal for industrial automation panels.
Technical Specifications
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Part Number | 1794-OC16 |
| Product Type | Flex I/O Digital Output Module |
| Number of Outputs | 16 (1 group, non-isolated, sourcing) |
| ON-State Voltage | 30V DC min / 48V nom / 60V DC max @45°C |
| ON-State Voltage Drop | 1.0V DC max @ 0.5A |
| ON-State Current | 2.0mA min to 500mA max per channel |
| OFF-State Voltage | 60V DC max |
| OFF-State Leakage | 1.0mA max |
| Output Signal Delay | OFF→ON: 0.5ms max; ON→OFF: 1.0ms (25°C) / 2.0ms (55°C) |
| Isolation Voltage | 1900V DC for 1s (user to system); no channel isolation |
| Flexbus Current | 80mA max |
| Power Dissipation | 3.7W max @ 60V |
| Thermal Dissipation | 12.6 BTU/hr @ 60V DC |
| Output Current Rating | 8A total (16 x 0.5A) |
| Surge Current | 4A for 10ms, repeatable every 2s |
| External Supply | 48V DC nominal (30-60V DC, incl. 5% ripple) |
| Supply Current | 13mA @30V / 21mA @48V / 27mA @60V |
| Indicators | 16 yellow status LEDs (logic driven) |
| Fusing | 2.0A, 150V AC MQ2 normal fuse |
| Keyswitch Position | 2 |
| Dimensions (HxWxD) | 46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in) |
| Weight | approx. 0.11 kg |
Environmental & Tolerance
- Operating Temperature: 0 to 55°C (32 to 131°F)
- Storage Temperature: -40 to 85°C (-40 to 185°F)
- Relative Humidity: 5 to 95% noncondensing
- Shock (Operating): 30g peak, 11ms pulse
- Shock (Non-operating): 50g peak, 11ms pulse
- Vibration: 5g @ 10-500Hz per IEC 68-2-6
Installation & Compatibility
Mounting: Attach to terminal base 1794-TB3, -TB3S, -TB2, or -TB3SK. The module supports vertical or horizontal installation. Compatibility: Works with FLEX I/O system. It is compatible with Allen-Bradley PLCs and Modicon Quantum systems. No rewiring needed when swapping modules.
Diagnostic & Maintenance
Diagnostic Capability: 16 yellow LEDs indicate output status. The module provides OFF-state leakage current detection. It helps identify short circuits or open loads quickly. Maintenance: Easy access to fuses. The modular design simplifies troubleshooting. You can replace the module without disturbing field wiring. This reduces downtime significantly.
Typical Applications
- Industrial automation control panels
- Discrete manufacturing processes
- Material handling systems
- Packaging machinery
- Conveyor systems
- HVAC and building automation
Frequently Asked Questions
Q: What is the maximum output current per channel?
A: 500mA per channel, total 8A for all 16 outputs.
Q: Can I use this module with a 24V DC supply?
A: No, the minimum voltage is 30V DC. Use a 48V DC nominal supply.
Q: Are the outputs isolated from each other?
A: No, they are non-isolated. Isolation is only between user and system.
Q: What terminal base units are compatible?
A: 1794-TB3, -TB3S, -TB2, -TB3SK, and -TB3S.
Certifications & Compliance
Tested to withstand 1900V DC for 1 second (user to system). Meets IEC 68-2-6 vibration standards. Designed for industrial environments. RoHS compliant.
Package & Warranty
Package Includes: 1 x 1794-OC16 module (terminal base sold separately). Warranty: 12-month limited warranty against defects.
Why Buy From Oiltech Controls?
- Over 15 years in industrial automation spare parts
- Global shipment support via FedEx, UPS, DHL
- Tested surplus/refurbished options available
- 12-month warranty on all products
- Technical verification before shipment
- Support for obsolete control systems
Contact: For inquiries, email info@oiltechcontrols.com or call +86 158 8020 0923 (WhatsApp).
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