Allen-Bradley 1756-OB16IEFK | ControlLogix DC Output Module 16 Point
Introduction:
Allen-Bradley 1756-OB16IEFK ControlLogix DC Output Module. 16 points with 2A per point at 30°C. 10-30V DC operating range.
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Product Attributes:
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Product Overview
The Allen-Bradley 1756-OB16IEFK is a ControlLogix DC output module. This module features a DC circuit type for 10 to 30 Volt applications. It provides reliable output switching for industrial control systems. The Allen-Bradley 1756-OB16IEFK supports removable terminal blocks for easy wiring. Users trust this module for high-density DC output requirements.
Technical Specifications
The 1756-OB16IEFK delivers robust DC output performance with temperature-dependent ratings. Below are the complete technical details.
General Specifications
Manufacturer: Rockwell Automation for industrial control reliability.
Brand: Allen-Bradley for ControlLogix compatibility.
Part Number: 1756-OB16IEFK for precise identification.
Series: ControlLogix family.
Module Type: DC Output Module.
Circuit Type: DC.
Enclosure: None (open-style).
Voltage Specifications
Input Voltage Range: 10 to 30 Volts.
Operating Voltage Range: 10 to 30 Volts DC.
Voltage Flexibility: Wide range for various DC supplies.
Current Ratings at 30°C
Maximum Output Current per Point: 2 Amps at 30°C.
Maximum Output Current per Module: 8 Amps at 30°C.
Current Ratings at 60°C
Maximum Output Current per Point: 1 Amp at 60°C.
Maximum Output Current per Module: 4 Amps at 60°C.
Derating: Output capacity reduces at higher temperatures.
Power and Backplane Specifications
Power Dissipation (Maximum): 3.6 Watts at 60°C.
Backplane Current (5 Volts): 350 milliamps.
Backplane Current (24 Volts): 3 milliamps.
Terminal Block Compatibility
Removable Terminal Block (Screw): 1756-TBCH.
Removable Terminal Block (Spring): 1756-TBS6H.
Terminal Block Benefit: Easy wiring and module replacement.
Isolation Specifications
Isolation Voltage: 50 Volts Continuous.
Isolation Protection: Between output and backplane.
Installation Guide
Follow these steps to install the Allen-Bradley 1756-OB16IEFK correctly.
Power Down the Chassis: Turn off all power to the ControlLogix rack.
Locate an Available Slot: Find any empty I/O slot in the chassis.
Select Terminal Block: Choose 1756-TBCH (screw) or 1756-TBS6H (spring).
Attach Terminal Block: Connect the RTB to the module front.
Insert the Module: Slide the 1756-OB16IEFK into the slot carefully.
Secure the Module: Lock using the retaining clips at top and bottom.
Wire Field Devices: Connect DC loads to the terminal block points.
Apply DC Power: Connect 10 to 30V DC to the output commons.
Verify Load Current: Ensure each point stays within rated current.
Calculate Total Current: Keep module total under 8A at 30°C or 4A at 60°C.
Apply Backplane Power: Turn on the chassis power supply.
Test Outputs: Energize each output and verify operation.
Monitor Temperature: Observe derating above 30°C ambient.
Check Power Dissipation: Ensure 3.6W maximum at 60°C is not exceeded.
Installation Notes
The module draws 350 mA from the 5V backplane.
Backplane current at 24V is only 3 mA.
Isolation voltage is 50 Volts continuous for protection.
Use compatible removable terminal blocks for easy wiring.
Output current derates from 2A at 30°C to 1A at 60°C per point.
Packaging List
This unit ships as a new and original product.
Allen-Bradley 1756-OB16IEFK ControlLogix DC Output Module
Product data sheet with specifications
Terminal block compatibility guide
Anti-static factory packaging bag
Frequently Asked Questions (FAQ)
1. How many output points does the 1756-OB16IEFK provide?
The Allen-Bradley 1756-OB16IEFK provides 16 DC output points. The operating voltage range is 10 to 30 Volts DC.
2. What is the current rating per output on this module?
The 1756-OB16IEFK provides 2 Amps per point at 30°C. At 60°C, the rating derates to 1 Amp per point.
3. What terminal blocks are compatible with the 1756-OB16IEFK?
The Allen-Bradley 1756-OB16IEFK works with 1756-TBCH (screw type) and 1756-TBS6H (spring type) removable terminal blocks.
4. What is the power dissipation of this output module?
The 1756-OB16IEFK has maximum power dissipation of 3.6 Watts at 60°C. Backplane current is 350 mA at 5V and 3 mA at 24V.
5. What is the isolation voltage rating on the 1756-OB16IEFK?
The Allen-Bradley 1756-OB16IEFK provides 50 Volts continuous isolation. This protects between output circuits and the backplane.