Allen-Bradley 5094-OB16S FLEX 5000 Safety Digital Output Module
Configured for safety-related output control in EtherNet/IP distributed I/O systems, the Allen-Bradley 5094-OB16S (5094-OB16S Safety Digital Output Module) provides direct switching of field devices through safety-rated solid-state output channels. The module is designed for use within FLEX 5000 architectures and supports SIL 3, PLe, and Category 4 safety applications requiring monitored output execution and fault-tolerant operation.
Hardware Specifications
| Parameter |
Specification |
| Model |
5094-OB16S |
| Brand |
Allen-Bradley |
| Origin |
Not specified in supplied data |
| Product Type |
Safety Digital Output Module |
| Output Rating |
500 mA at 18-32 VDC |
| Sensor Actuator Power |
8.2 A at 18-32 VDC |
| Isolation Voltage |
250 V continuous |
| Isolation Type |
SA power-to-backplane, channels-to-backplane |
| Safety Rating |
SIL 3, PLe, Category 4 |
| Backplane Voltage |
Via FLEX 5000 platform |
| Terminal Base Compatibility |
5094-MB / 5094-MBXT series bases |
| Terminal Block Types |
RTB3I, RTB3IS, RTB3IXT, RTB3ISXT |
| Wire Category |
Category 2 signal ports, Category 2 power ports |
| Wire Size |
0.34-2.5 mm2 (22-14 AWG) copper |
| Terminal Torque |
0.4 N m (3.5 lb in) screw terminal |
| Corrosion Classification |
ISA S71.04 G2 |
| Corrosion Classification XT Version |
ISA S71.04 G3 |
| Enclosure Type |
Open-style |
| Operating Temp |
-40 deg C to 70 deg C |
| Maximum Surrounding Air Temp |
70 deg C |
| Temperature Code |
T4 |
I/O Density Scaling for FLEX 5000 Safety Systems
The 5094-OB16S integrates into FLEX 5000 distributed I/O assemblies, allowing safety output functions to be expanded through a modular architecture. The module interfaces with compatible FLEX 5000 mounting bases and participates in the platform backplane communication structure used by EtherNet/IP adapters and Logix controllers.
The distributed design supports scalable deployment of safety outputs while maintaining common installation practices across standard and safety I/O assemblies. Corrosion-resistant XT versions are available for installations requiring enhanced environmental protection.
Frequently Asked Questions
Q: What safety certification level does the module support?
A: The module is specified for SIL 3, Performance Level e (PLe), and Category 4 safety applications.
Q: What is the maximum output capacity per channel?
A: The output rating is 500 mA with an operating voltage range of 18-32 VDC.
Q: Is field-side isolation provided?
A: Yes. The module provides 250 V continuous isolation between sensor actuator power and the backplane, as well as between output channels and the backplane.
Field Installation Guidelines
-
Install the module on a compatible 5094-MB or 5094-MBXT mounting base before applying field power.
-
Verify that sensor actuator power remains within the specified 18-32 VDC operating range.
-
Use only copper conductors meeting the specified wire gauge and temperature requirements.
-
Apply the specified terminal tightening torque when utilizing screw-type terminal blocks.
-
Route output power conductors separately from communication cables and sensitive analog circuits.
-
Install the module within a suitable industrial enclosure because the product utilizes an open-style housing.
-
Verify output channel operation and safety function response during commissioning.
-
Inspect terminal connections periodically to ensure continued mechanical integrity and electrical continuity.
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