Allen-Bradley 1791DS-IB8XOB8 Guard I/O Safety I/O Module
$123.00
$320.00
Description
Allen-Bradley 1791DS-IB8XOB8 Guard I/O Safety I/O Module
Configured for safety signal acquisition and output switching in Guard I/O 1791ES and 1791DS DeviceNet platforms, the Allen-Bradley 1791DS-IB8XOB8 (1791DS-IB8XOB8 Safety I/O Module) provides direct physical/electrical execution through eight sinking safety inputs and eight sourcing safety outputs.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1791DS-IB8XOB8 |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.93 lbs |
| Operating Temp | -40 to 70 deg C (-40 to 158 deg F) |
| Power Consumption | 110 mA @ 24 VDC |
| Product Line | Guard I/O 1791ES and 1791DS |
| Module Type | Guard I/O DeviceNet Safety I/O Module |
| Communication Interface | DeviceNet |
| Safety Inputs | 8 sinking inputs |
| Safety Outputs | 8 sourcing outputs |
| Test Outputs | 4 sourcing outputs |
| Input Type | Single-channel |
| Output Type | Current sourcing |
| Operating Voltage Range | 20.4-26.4 VDC |
| Communications Power Supply | 11-25 VDC |
| Communications Current Consumption | 110 mA at 24 VDC |
| On-State Input Voltage | 11 VDC minimum |
| Off-State Input Voltage | 5 VDC maximum |
| Rated Output Current | 0.7 A |
| Enclosure Rating | IP20 |
| Mounting Type | DIN rail mount |
| Wire Specification | Copper 0.2-2.5 mm2 (AWG 24-12) solid wire, 0.34-1.5 mm2 (AWG 22-16) flexible wire |
EtherNet/IP and DeviceNet Safety Architecture
The 1791DS-IB8XOB8 operates as a CompactBlock Guard I/O DeviceNet safety module with integrated input and output processing. The module supports I/O density scaling by combining safety input monitoring and solid-state safety output control in a single field-mounted block.
Allen-Bradley Guard I/O modules require compatible safety controllers and configured DeviceNet safety communication parameters. Firmware flash compatibility and network configuration must be verified before integration into an existing safety control architecture.
The module provides current sinking input channels, current sourcing safety outputs, and dedicated test outputs for safety device diagnostics. Output channels are designed for controlled DC switching with a rated output current of 0.7 A per safety output.
Frequently Asked Questions
Q: How many safety input and output channels are available on the 1791DS-IB8XOB8?
A: The module provides 8 sinking safety inputs and 8 sourcing safety outputs, with 4 additional sourcing test outputs.
Q: What DC supply range is required for I/O operation?
A: The I/O power supply operates within 20.4-26.4 VDC, based on a 24 VDC nominal supply.
Q: Does the module support SIL3 safety applications?
A: The module is specified as a Guard I/O DeviceNet Safety module suitable for applications requiring SIL3-level safety requirements when applied within an approved safety system configuration.
Field Installation Guidelines
Install the 1791DS-IB8XOB8 on a compatible DIN rail structure and verify mechanical retention before wiring field devices. Confirm that power supply polarity, DeviceNet communication connections, and safety I/O terminal assignments match the system design documentation.
Use appropriate cable routing practices to separate safety signal wiring from high-voltage power conductors and sources of electrical interference. Cable shielding and grounding methods should follow the control panel and safety system installation standards.
Before commissioning, verify each safety input transition, safety output response, and test output diagnostic function. Confirm DeviceNet node configuration, safety communication status, and field device wiring integrity before placing the module into operational service.
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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