Allen-Bradley 1794-OB16/A FLEX I/O Sourcing Digital Output Module
$123.00
$320.00
Description
Allen-Bradley 1794-OB16/A FLEX I/O Sourcing Digital Output Module
The Allen-Bradley 1794-OB16/A, also cataloged as the 1794-OB16 Sourcing Digital Output Module, operates as a dedicated hardware component for converting controller commands into 24 VDC transistor-based sourcing outputs within the FLEX I/O system.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OB16/A |
| Brand | Allen-Bradley / Rockwell Automation |
| Power Consumption | 4.2 W maximum at 31.2 VDC |
| Module Type | Sourcing Digital Output Module |
| Product Line | FLEX I/O |
| Number of Outputs | 16 non-isolated sourcing outputs |
| Output Type | Transistor-based sourcing (PNP) |
| Nominal Voltage | 24 VDC |
| Operating Voltage Range | 10 VDC to 31.2 VDC |
| Output Current Rating | 0.5 A per channel, 8.0 A maximum per module |
| On-State Voltage Drop | 0.5 VDC maximum at 0.5 A |
| Off-State Leakage Current | 1.0 mA maximum |
| Surge Current | 2.0 A for 10 ms, repeatable every 2 s |
| FlexBus Current | 80 mA at 5 VDC |
| Thermal Dissipation | 14.3 BTU/hr maximum at 31.2 VDC |
| Isolation Voltage | 50 V continuous, basic insulation type, tested at 850 VDC for 60 s |
| Compatible Terminal Bases | 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3T, 1794-TB3TS |
FLEX I/O Backplane Communication and I/O Density Scaling
The 1794-OB16/A exchanges output data through the FLEX I/O backplane interface and provides 16 discrete sourcing channels within a compact modular I/O structure. The module supports I/O density scaling by allowing multiple output channels to be integrated within the FLEX I/O terminal base architecture. Controller commands are transferred through the adapter and backplane communication path for field output execution.
Frequently Asked Questions
Q: What type of field devices can be connected to the 1794-OB16/A outputs?
A: The module provides 24 VDC sourcing transistor outputs intended for field devices such as solenoids, relays, indicators, and starters within the specified current limits.
Q: What terminal bases are compatible with the 1794-OB16/A module?
A: The module is compatible with FLEX I/O terminal bases including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3T, and 1794-TB3TS.
Q: Does the module provide isolated output channels?
A: The 1794-OB16/A provides 16 non-isolated sourcing outputs with a specified isolation voltage rating of 50 V continuous.
Field Installation Guidelines
Install the 1794-OB16/A module on a compatible FLEX I/O terminal base and verify terminal base wiring before applying field power. Use wiring practices suitable for 24 VDC discrete output circuits and separate output wiring from high-noise power conductors where required.
Connect field device wiring according to the sourcing output configuration and confirm load polarity before energizing the circuit. Maintain proper cabinet grounding and apply shield termination practices for adjacent signal wiring when required by the installation environment.
Verify the controller adapter configuration, module addressing, and output mapping before placing connected field devices into service. Confirm that connected loads remain within the specified per-channel and total module current ratings.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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