Allen Bradley 1756-OB16E Digital Output Module

The AB 1756-OB16E is a 16-channel digital output module for ControlLogix systems, designed to deliver fast, reliable 12/24V DC sourcing outputs for industrial control applications. Each channel is a high-speed transistor output capable of switching up to 0.5 A, with a total module output current of 8 A.

Engineered for demanding automation environments, this module features per-point diagnostics, signal status monitoring, and seamless integration with Studio 5000. The 1756-OB16E is ideal for controlling relays, solenoids, lamps, and other DC-powered actuators.

Technical Specifications

Model: 1756OB16E
Series: ControlLogix
Type: Digital Output Module
Channels: 16 sourcing outputs
Output Voltage Range: 10–31.2 V DC (nominal 24 V DC)
Output Type: Transistor (sourcing)
Signal Delay: 0.7 ms ON / 1 ms OFF
Mounting: Chassis slot – standard ControlLogix rack
Connection Type: Plug-in terminal block

Electrical Specifications

Max Output Current per Channel: 0.5 A
Total Output Current (Module): 8 A max
Nominal Output Voltage: 24 V DC
Input Current at Signal 1: 2 mA
Leakage Current: <1 mA per point (typical)
Short-Circuit Protection: Not built-in (external protection required)
Backplane Current Draw:
• 5.1V DC @ 120 mA
• 24V DC @ 190 mA
Power Dissipation: Approx. 3.3 W
Heat Dissipation: Approx. 11.3 BTU/hr
Isolation Voltage: 250V continuous (field to backplane), basic insulation

Network & Interface Specifications

System Integration:

• Backplane Communication: Standard ControlLogix
• Diagnostics: Per channel – short/open circuit, overvoltage detection
• Configuration Software: Studio 5000 Logix Designer

Supported Protocols:
Communicates via backplane only (no direct network interface)

Expansion Compatibility: Fully supports mixed I/O configurations within same chassis

Mechanical Specifications

Width: 38.1 mm
Height: 300 mm
Depth: 111.25 mm
Mounting Orientation: Vertical slot installation
Enclosure Type: Open-style, install in panel
Terminal Block: Removable, plug-in type
Weight: Approx. 0.4 kg

Environmental Specifications

Operating Temperature: 0…60 °C
Storage Temperature: –40…85 °C
Relative Humidity: 5% to 95% non-condensing
Shock Rating: 30 g operating, 50 g non-operating
Vibration Resistance: 2 g @ 10–500 Hz
Pollution Degree: 2
Certifications: Class I Div 2 hazardous areas

Compliance & Certifications

Certifications: UL, c-UL, CE, RoHS
Explosion Safety (Gas/Dust): None
SIL/PL Rating: Not rated
EMC Compliance: EN 61000-6-2 / 6-4
Standards Met: EN 61131-2
Functional Safety: Not applicable

Key Features & Benefits

✅ 16 DC Sourcing Outputs – High-speed transistor switching for a wide range of field devices

✅ Per-Channel Diagnostics – Fault monitoring and signal status detection for improved uptime

✅ 0.7 ms Switching Time – Fast output response ideal for real-time applications

✅ Compact 38.1 mm Width – Efficient use of chassis space with high I/O density

✅ Compatible with Studio 5000 – Seamless configuration and monitoring via Logix Designer

📦 Order the Allen Bradley 1756-OB16E from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 1756-OB16E prices. This ControlLogix digital output module delivers fast, reliable DC control with intelligent diagnostics—available now with expert technical advice and rapid UK delivery.

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Drive Outlet Megastore – your trusted source for Allen Bradley ControlLogix I/O modules and automation solutions.