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Allen-Bradley 1794-OB16D Flex I/O 16 Source Outputs Module

Allen-Bradley 1794-OB16D Flex I/O 16 Source Outputs Module

Series#: AllenBradley

Product Details

1794-OB16D ALLEN-BRADLEY FLEX I/O 16 Source Outputs Module – High-density discrete output solution for distributed control systems.
Provides 16 individually isolated sourcing (PNP) outputs, ideal for driving actuators, solenoids, and indicator lamps in industrial automation.
Rated for 24V DC operation with short-circuit protection and diagnostic feedback via module status indicators.
Supports hot-swappable installation within the FLEX I/O platform, reducing downtime during maintenance or expansion.
Compatible with 1794-AENT, 1794-ACNR, and other FLEX I/O communication adapters for seamless integration into ControlLogix and CompactLogix systems.
100% Genuine and New, rigorously inspected before international dispatch.

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Specification

Datasheet (PDF)

The 1794-OB16D is a 16-point sourcing output module from Allen-Bradley’s FLEX I/O family, engineered for reliable control of on/off devices in harsh industrial environments. This module delivers 16 discrete outputs with 24V DC sourcing capability, each protected against overloads and short circuits. Its compact form factor and hot-swappable design simplify field wiring and reduce system downtime. The 1794-OB16D integrates directly with FLEX I/O adapters via a backplane interface, supporting high-speed data exchange to PLCs and DCS systems. Typical applications include conveyor control, packaging machinery, and material handling where robust, isolated output channels are critical.

Parameter	Specification
Product Type	Discrete DC Output Module
Output Channels	16 (Source/Sourcing, PNP)
Rated Voltage	24V DC (20.4-26.4V DC inclusive)
Output Current per Channel	0.5 A maximum at 30°C (derated to 0.4 A at 60°C)
Total Current per Module	8 A maximum (all channels on)
Output Type	Solid-state MOSFET with short-circuit protection
Isolation Voltage	50V DC (channel-to-backplane, basic insulation)
On-State Voltage Drop	≤ 1.2V DC at rated current
Off-State Leakage Current	≤ 0.1 mA
Switching Frequency	≤ 10 Hz (resistive load)
Load Type	Resistive, inductive (with flyback diode), or lamp loads
Indicators	Green LED per channel (output status), red/green module status LED
Backplane Current Consumption	5V DC: 50 mA typical; 24V DC: 0 mA (module powered by field side)
Field Power Supply	24V DC nominal, 2 A minimum (external supply required)
Operating Temperature	0°C to +60°C (32°F to 140°F)
Storage Temperature	-40°C to +85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	5 g Standard Models 10-500 Hz (per IEC 60068-2-6)
Shock Resistance	30 g (11 ms half-sine, per IEC 60068-2-27)
Wiring Termination	Removable terminal block (1794-TB3 or 1794-TB3S)
Module Dimensions	Approx. 94 mm x 44 mm x 51 mm (H x W x D)
Weight	Approx. 0.12 kg (0.26 lb)
Certifications	CE, UL, cUL, ATEX (Zone 2), IECEx
Compatible Adapters	1794-AENT, 1794-ACNR, 1794-ASB, 1794-CE1, etc.
Wiring Diagram	Refer to Allen-Bradley Publication 1794-IN105D-EN-P