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Allen-Bradley

Allen-Bradley 1794-OB16P FLEX I/O Digital DC Output Module

SKU 1794-OB16P

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1794-OB16P
Origin Singapore
Product Type: Digital Output Modules
Payment: T/T, Western Union
Weight: 0.2 kg
Dimensions: 94 x 46 x 53 mm
Shipping port: Xiamen
Warranty: 12 months

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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Product Description

Description

The Allen-Bradley 1794-OB16P is a high-density FLEX I/O digital DC output module designed to drive 24VDC field devices in automated industrial control systems. Operating as an essential signal interface, it converts internal system logic instructions into 24VDC discrete output signals to control indicator lamps, solenoid-actuated equipment, and relay coils.

Designed for modular panel layouts, the module mounts onto a user-supplied terminal base unit that provides physical DIN rail attachment and field I/O termination points. The module interfaces with industrial networks through compatible FLEX I/O communication adapters, supporting EtherNet/IP, ControlNet, Remote I/O, and PROFIBUS DP architectures.

Features

Delivers 16 current-protected 24VDC discrete outputs organized in a compact DIN-rail form factor.
Operates across a wide on-state voltage range of 10VDC to 31.2VDC.
Provides protected output circuitry with a 0.5A per channel output current rating and 8.0A maximum total module rating.
Accommodates high-inrush inductive loads with a 1.5A surge current capability for 50ms (repeatable every 2 seconds).
Interconnects with network adapters using the Flexbus interface, drawing 60mA at 5VDC.
Mounts on standard 1794 terminal base units, including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, and 1794-TB3SK bases.

Applications

Energizing 24VDC solenoid valves and fluid control actuators in process automation lines.
Driving discrete indicator lights, control panel status lamps, and audible alarm devices.
Actuating interposing relay coils and motor starter contactor circuits.
Providing high-density discrete output control for decentralized machine control stations.

Technical Specifications

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Product Series	FLEX I/O
Module Type	Digital DC Output Module
Model Number	1794-OB16P
Number of Outputs	16 discrete outputs (protected)
On-State Voltage Range	10VDC min, 24VDC nom, 31.2VDC max
On-State Current per Channel	1.0mA min to 500mA max
Total Output Current Rating	8.0A (16 channels at 0.5A each)
On-State Voltage Drop	0.5VDC max
Surge Current Capability	1.5A for 50ms (repeatable every 2s)
Off-State Leakage Current	0.5mA max
Flexbus Current Draw	60mA at 5VDC
Isolation Voltage	50V continuous (basic insulation type), tested at 2121VDC for 60s (field to system)
Channel Isolation	No isolation between individual channels
Output Signal Delay (OFF to ON)	0.5ms
Output Signal Delay (ON to OFF)	1.0ms
Power Dissipation	5.0W max at 31.2VDC
Thermal Dissipation	17.0 BTU/hr max at 31.2VDC

Connections / Interfaces

Terminal Base / Interface	Function
Flexbus Connector	Interfaces with FLEX I/O adapter or adjacent I/O modules to pass logic power and data signals
Compatible Bases (1794-TB2, 1794-TB3, 1794-TB3S)	Standard screw or spring-clamp terminal bases providing I/O termination points and DIN rail mounting
Heavy-Duty Bases (1794-TB3K, 1794-TB3SK)	Conformal coated terminal base options for extended environmental resistance

Installation Guidelines

Isolate all control power supplies, field power sources, and output load circuits before beginning installation.
Securely mount the chosen terminal base unit (e.g., 1794-TB3) onto a grounded 35mm DIN rail.
Verify that the terminal base keying switch is properly positioned for the 1794-OB16P module specifications.
Align the module with the terminal base guides and press firmly until the module snaps into place.
Connect 24VDC power supply conductors and field output wiring to the designated base terminals according to system electrical schematics.
Verify output polarity and shield grounding connections prior to re-applying field power.

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What is the primary function of the Allen-Bradley 1794-OB16P module?

The Allen-Bradley 1794-OB16P is a 16-point 24VDC digital output module for FLEX I/O systems. It receives logic-level signals from a network communication adapter and energizes field devices such as solenoids, indicator lamps, and relay coils.

Which terminal bases are compatible with the Allen-Bradley 1794-OB16P?

The Allen-Bradley 1794-OB16P requires a separate terminal base for installation and supports models 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, and 1794-TB3SK.

What is the maximum output current capacity of the Allen-Bradley 1794-OB16P?

The Allen-Bradley 1794-OB16P supports up to 500mA (0.5A) per output channel, with a maximum total module current rating of 8.0A across all 16 channels.

Does the Allen-Bradley 1794-OB16P support network communications directly?

The Allen-Bradley 1794-OB16P communicates across the backplane Flexbus and requires a FLEX I/O communication adapter to connect to networks like EtherNet/IP, ControlNet, Remote I/O, or PROFIBUS DP.

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1794-OB16P

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