1794-OB16P Flex I/O Discrete Output Module
1794-OB16P is a 16-channel sourcing output module from Allen‑Bradley Flex I/O. It drives 24V DC loads like solenoids, relays, and indicators. Each channel has electronic protection. Use it with 1794-TB2, 1794-TB3, or 1794-TB3S terminal bases.
Technical Specifications
- Brand: Rockwell Automation / Allen‑Bradley
- Model: 1794‑OB16P
- Outputs: 16 sourcing, non‑isolated, 1 group
- On‑state voltage: 10‑31.2V DC (24V nom.)
- On‑state current: 1.0 mA min, 500 mA max per channel
- Off‑state leakage: ≤0.5 mA
- Voltage drop: ≤0.5V DC at rated current
- Surge current: 1.5A for 50 ms, repeatable every 2s
- Module current: 8A total (16 x 0.5A)
- Output delay: OFF→ON 0.5ms, ON→OFF 1.0ms
- Isolation: 2121V DC (user to system); no channel‑to‑channel
- FlexBus current: 60mA @ 5V DC
- Power dissipation: 5.0W max @ 31.2V DC
- Thermal dissipation: 17 BTU/hr @ 31.2V DC
- Indicators: 16 yellow status LEDs (logic driven)
- Keyswitch position: 2
General Data
- Supply voltage: 10‑31.2V DC (24V nom.)
- Supply current: 60mA @ 24V DC (25‑75mA range)
- Dimensions: 46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in)
- Temperature: 0…55°C operating; -40…85°C storage
- Humidity: 5‑95% non‑condensing
- Shock: 30g operating, 50g non‑operating
- Vibration: 5g @ 10‑500Hz (IEC 68‑2‑6)
- Wire size: 12 AWG (4 mm²) stranded max
Certifications
- Class I Division 2 Groups A‑D
- Class I Zone 2 Group IIC
- UL, CSA, CE marked
Compatibility
- Terminal bases: 1794‑TB2, ‑TB3, ‑TB3S, ‑TB3K, ‑TB3SK
- Adapters: ControlNet, DeviceNet, PROFIBUS, EtherNet/IP
- Controllers: ControlLogix, CompactLogix, PLC‑5, SLC 500
- Also works with Modicon Quantum systems via adapter
Installation & Maintenance
- Mount on DIN rail using terminal base only.
- Screw‑clamp terminations for secure wiring.
- Electronic fusing eliminates external fuse changes.
- Status LEDs simplify troubleshooting.
- No calibration required; plug‑and‑play operation.
Typical Applications
- Actuate solenoid valves and relay coils.
- Control indicator lamps and alarms.
- Distributed I/O for machine control.
- Interface with PLC and DCS systems.
Diagnostic Capabilities
- Per‑channel yellow LEDs show output state.
- Electronic protection indicates overload/short.
- FlexBus communication status via adapter.
Frequently Asked Questions
Is the 1794‑OB16P isolated? No, channels are not isolated from each other.
What wire size fits? 12 AWG stranded max with 1.2mm insulation.
Can I mix modules? Yes, mix with any Flex I/O modules on the same adapter.
Does it support surge? Yes, 1.5A for 50ms every 2 seconds.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment 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 us: info@oiltechcontrols.com | +86 158 8020 0923
Included in box: 1794‑OB16P module, documentation, and terminal base (if ordered).
Warranty: 12 months against defects. Shipping via FedEx, UPS, or DHL.
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Original Source: https://www.oiltechcontrols.com/
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