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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 1756-OB32
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Product Model1756-OB32
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Spare Model1756OB32
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Product ParametersControlLogix 32 Pt 12/24V DC D/O Module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size23.3x18.2x5.3cm
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ManufacturerAllen-Bradley
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Weight0.35 kg
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Output Delay Time, OFF to ON60 µs nom/1 ms max
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Output Delay Time, ON to OFF200 µs nom/1 ms max
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Current per point0.5 A @ 50 °C (122 °F) linear derating 0.35 A @ 60 °C (140 °F)
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Current per module16 A @ 50 °C (122 °F) linear derating 10 A @ 60 °C (140 °F)
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Maximum Output Current Rating-Point0.5 Amps at 50 Celsius, 0.35 Amps at 60 Celsius
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Maximum Output Current Rating-Module16 Amps at 50 Celsius, 10 Amps at 60 Celsius
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Outputs32-Point
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Operating Voltage Range10-31.2 Volts DC
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Power Dissipation (Max)4.8 Watts at 60 degrees Celsius
Description
The 1756-OB32 is a ControlLogix DC (10…31.2V) output module to provide reliable digital output control in industrial automation applications. The 1756-OB32 module delivers 32 sourcing outputs organized in two groups of 16 points, making it ideal for applications requiring high-density digital output control with DC voltage operation.
The 1756-OB32 operates within a voltage range of 10…31.2V DC, with nominal operation at 12/24V DC source. The 1756-OB32 features fast switching characteristics with output delay times of 60 µs nominal (1 ms max) for Off-to-On transitions and 200 µs nominal (1 ms max) for On-to-Off transitions, ensuring responsive control of connected field devices.
Power consumption for the 1756-OB32 is efficient, with a current draw of 300 mA at 5.1V and 2 mA at 24V from the backplane, resulting in total backplane power of 1.58W. The 1756-OB32 has maximum power dissipation of 4.8W at 60°C (140°F) and thermal dissipation of 16.37 BTU/hr, ensuring reliable thermal performance in ControlLogix chassis installations.
The 1756-OB32 operates within a voltage range of 10…31.2V DC, with nominal operation at 12/24V DC source. The 1756-OB32 features fast switching characteristics with output delay times of 60 µs nominal (1 ms max) for Off-to-On transitions and 200 µs nominal (1 ms max) for On-to-Off transitions, ensuring responsive control of connected field devices.
Power consumption for the 1756-OB32 is efficient, with a current draw of 300 mA at 5.1V and 2 mA at 24V from the backplane, resulting in total backplane power of 1.58W. The 1756-OB32 has maximum power dissipation of 4.8W at 60°C (140°F) and thermal dissipation of 16.37 BTU/hr, ensuring reliable thermal performance in ControlLogix chassis installations.
Revisions
Revision Part #
Also known as
Information
Overview
Manuals
Application Notes
Product Applications
Module Insertion Steps
Features:
- 32-Point Sourcing DC Output
- High-Speed Output Response
- Flexible Current Capacity
- Surge Current Protection
- Configurable Fault and Program States
The 1756-OB32 provides 0.5 A per channel at 60°C, with linear derating to 1.0 A per point at 30°C. The maximum output current per module is 8 A at 60°C or 16 A at 30°C. Each point can withstand surge currents up to 2 A for 10 ms, repeatable every 2 seconds. Minimum load current is 2 mA per point and maximum leakage current in the off state is 0.5 mA.
The module draws 300 mA from the 5.1V DC backplane and 2 mA from the 24V DC backplane, for a total backplane power of 1.57 W. Maximum power dissipation is 4.1 W at 60°C, with thermal dissipation of 13.97 BTU/hr.
The 1756-OB32 Allen-Bradley ControlLogix Output Module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1756-OB32 ControlLogix Output Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Output switching characteristics include a maximum turn-on time of 1 ms and maximum turn-off time of 2 ms. On-state voltage drop is 0.3 V DC maximum at 0.5 A. Isolation voltage is 250 V continuous (reinforced insulation type) between output channels and backplane, with no isolation between individual output channels.
Protection features include electronic current limiting per channel, short-circuit protection, overload protection, thermal protection, and reverse polarity protection for both the module and field wiring. Fault and status reporting is supported through the backplane.
The 1756-OB32 requires a 20-position or 36-position removable terminal block (1756-TBNH, 1756-TBSH, or 1756-TBCH). Electronic keying is software configurable and RTB keying is user-defined mechanical.
- Water/Wastewater: Regulates chemical dosing pump speeds and effluent valve positioning
- Oil/Gas/Petrochemical: Manages pressure loops and controls burner gas-feed systems precisely
- Food/Beverage: Adjusts cooking/mixing temperatures via steam control valves with PID logic
- Power Generation: Drives steam governor actuators and integrates cooling tower fan speed systems
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Power Down: Disconnect all chassis and field-side power before inserting the module to prevent electrical arcing or damage.
Align the Module: Hold the module horizontally and line up the circuit board with the top and bottom card guides of your desired slot in the ControlLogix chassis.
Slide it In: Push the module firmly into the slot until the chassis latches click, snapping the module securely into the backplane.
Key the RTB: Use the plastic wedge-shaped keys provided with the RTB to fit into the matching slots on the front of the module. This physically prevents a differently configured RTB from being plugged into this module slot later.
Alternative Names
1756-0B32
1756OB32
I756OB32
1756-O832
I756-0832
17560B32
I756-OB32
1756O832
I7560832
Technical notes
The 1756-OB32 features isolation voltage of 250V (continuous) with basic insulation type between outputs-to-backplane and output group-to-group, with routine testing at 1350V AC for 2 seconds. The 1756-OB32 occupies a single slot width in the ControlLogix chassis and requires wire category 1 for signal ports, making it a compact and efficient solution for digital output applications in ControlLogix control systems.
FAQs
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What is the operating voltage?
+It operates between 10 and 31.2V DC (12/24V DC nominal). -
Which terminal blocks (RTBs) are compatible?
+The module requires a 36-pin terminal block, such as the 1756-TBCH (cage clamp) or 1756-TBS6H (spring clamp). RTBs are not included and must be ordered separately. -
What is the What is the maximum current rating per output point? voltage range?
+It supports up to 0.5 A per point at 50 °C (122 °F). This is linearly derated to 0.35 A per point at 60 °C (140 °F). -
Why are half of my module's outputs not working?
+This usually indicates a blown internal 10 A fuse. Each 16-point group has its own 10 A fuse protecting the external wiring to loads. If a short circuit occurs, the internal fuse will blow.
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