Allen Bradley 1756-OB16I Digital Output Module

The AB 1756-OB16I is a high-speed digital output module designed for use in Allen Bradley ControlLogix chassis systems. Featuring 16 isolated transistor outputs, this unit provides robust switching of 10–30 VDC signals with source or sink wiring flexibility. Ideal for control applications requiring precise output timing, it supports up to 8 A total output current across channels.

With its 36-pin removable terminal block and plug-in connector design, the 1756-OB16I ensures easy wiring and maintenance. Isolation between channels enhances signal integrity, making this module well-suited for demanding discrete control tasks in packaging, material handling, and automated manufacturing.

Technical Specifications

Model: 1756OB16I
Series: ControlLogix
Module Type: Digital Output Module
Number of Outputs: 16
Output Type: Transistor (Isolated)
Voltage Range: 10–30 VDC
Mounting: ControlLogix chassis (requires 1756 backplane)
Application: High-speed discrete control, machine automation, I/O expansion

Electrical Specifications

Output Voltage Range: 10–30 VDC
Nominal Output Voltage: 24 VDC
Output Type: Isolated sourcing/sinking
Output Current (Total): 8 A max
Current per Channel: 0.5 A max
Input Current at Signal 1: 1 mA
Short-Circuit Protection: Not included
Isolation: Channel-to-channel isolation
Switching Delay: 1 ms ON / 1 ms OFF

I/O & Communication Interfaces

Digital Inputs: 0
Digital Outputs: 16
Data Format: Integer
Connection Type: 36-pin RTB (Removable Terminal Block, sold separately)
Compatible Interfaces: ControlLogix backplane
Status Indicators: Per-channel status LEDs

Mechanical Specifications

Width: 38.1 mm
Height: 300 mm
Depth: 111.25 mm
Weight: Approx. 350 g
Plug Connection: RTB (not included)
Housing Type: Open module (for enclosure mounting)

Environmental Specifications

Operating Temperature: 0°C to 60°C
Storage Temperature: –40°C to 85°C
Humidity: 5% to 95% RH (non-condensing)
Shock Resistance: 30 g
Vibration Resistance: 5 g, 10–500 Hz
IP Rating: IP20 (when installed in enclosure)

Compliance & Certifications

CE Marked: Yes
UL / cUL Listed: Yes
RoHS Compliant: Yes
Standards: IEC/EN 61131-2, EN 61326-1, ANSI/ISA 12.12.01

Key Features & Benefits

✅ 16 Digital Outputs: Fully isolated channels for high-speed switching and signal integrity.

✅ 10–30V DC Operation: Supports a wide range of industrial voltage standards.

✅ ControlLogix Compatible: Designed for seamless use in 1756 chassis systems.

✅ Plug-In Terminal Block Design: Simplifies installation and maintenance.

✅ High Reliability: Ideal for machine builders and OEMs needing robust output modules.

📦 Order the Allen Bradley 1756-OB16I from Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable Allen Bradley 1756-OB16I prices. Built for precision and flexibility, this digital output module is the go-to choice for ControlLogix users requiring isolated, high-performance DC outputs.

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Fast switching. Isolated outputs. ControlLogix engineered. — Drive Outlet Megastore