Allen-Bradley 1794-OB8EP FLEX I/O Digital DC Output Module
$123.00
$320.00
Description
Allen-Bradley 1794-OB8EP FLEX I/O Digital DC Output Module
Configured for sourcing current output execution in the Allen-Bradley FLEX I/O 1794 system, the Allen-Bradley 1794-OB8EP (1794-OB8EP Digital DC Output Module) provides direct physical/electrical execution for 24 VDC field devices.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OB8EP |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.25 lbs |
| Power Consumption | 5.5 W @ 31.2 VDC max. |
| Product Type | FLEX I/O Digital DC Output Module |
| Product Line | FLEX I/O 1794 |
| Number of Outputs | 8 sourcing current outputs |
| On-state Voltage Nominal | 24 VDC |
| On-state Voltage Minimum | 19.2 VDC |
| Output Current Rating | 2.0 A max. per output |
| Maximum Module Output Current | 10.0 A total |
| On-state Voltage Drop | 0.2 VDC max. |
| Off-state Leakage Current | 0.5 mA max. |
| Surge Current | 4 A for 50 ms, repeatable every 3 seconds |
| Isolation Voltage | 50 V continuous, basic insulation tested at 850 VDC for 1 s |
| Channel Isolation | No isolation between individual channels |
| FlexBus Current | 73 mA @ 5 VDC |
| Thermal Dissipation | 18.8 BTU/hr @ 31.2 VDC max. |
| Recommended Terminal Base Units | 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, 1794-TBNK |
| Output Protection | Electronic fuse protection |
EtherNet/IP and FLEX I/O Backplane Interface Characteristics
The 1794-OB8EP operates as a FLEX I/O output node with communication through the FLEXBus interface. The module uses a 73 mA @ 5 VDC backplane current load and transfers controller output commands to field-side sourcing channels. The I/O density is configured as eight DC output points within a single module position, with terminal base selection determined by installation requirements.
Frequently Asked Questions
Q: Does the 1794-OB8EP provide isolation between individual output channels?
A: No. The module provides field-side to system isolation rated at 50 V continuous, but individual output channels do not have channel-to-channel isolation.
Q: What is the maximum output current capability of each channel?
A: Each sourcing output channel supports up to 2.0 A maximum output current. The total module output load must remain within the specified 10.0 A maximum.
Q: How is output overcurrent protection implemented?
A: Output channels use electronic fuse protection to limit fault conditions without requiring external individual output fuses.
Field Installation Guidelines
Install the 1794-OB8EP module on the specified FLEX I/O terminal base unit and verify correct mechanical engagement before applying field power. Use wiring practices suitable for 24 VDC industrial output circuits.
Separate output wiring from high-voltage power conductors and high-noise sources to reduce electrical interference. Connect cable shields according to the control panel grounding design and maintain proper grounding continuity.
Verify field device polarity before energizing outputs. Confirm that connected loads remain within the per-channel and total module current limits. Check terminal base connections, FlexBus seating, and module locking features during commissioning.
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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