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In Stock
Ships by Monday, July 13
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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 1794-TB3S
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Product Model1794-TB3S
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Spare Model1794-TB3S/A
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Product ParametersFLEX I/O Terminal Base Unit
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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 Size10.2x7.6x10.2cm
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ManufacturerAllen-Bradley
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Weight0.2 kg
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Terminal TypeSpring Clamp
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Wiring Configuration3-Wire
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I/O Connections16 I/O terminals
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Common Connections18 Common (COM) terminals
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Maximum Voltage125 VAC / 125 VDC
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Current Capacity10 A
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Operating Temperature-20°C to +70°C
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Storage Temperature-40°C to +85°C
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Relative Humidity5–95%, non-condensing
Description
The Allen-Bradley 1794-TB3S FLEX I/O Terminal Base Unit is a field wiring base used with the Rockwell Automation FLEX I/O platform. It provides mechanical support for compatible I/O modules, electrical termination for field wiring, and communication through the integrated FLEXBus backplane. The spring-clamp terminal design simplifies installation and maintenance by allowing quick insertion and secure retention of conductors without terminal screws.
The terminal base includes 16 I/O terminals, 18 common terminals, and 18 power terminals, making it suitable for applications using 3-wire digital input devices such as proximity sensors, limit switches, and photoelectric sensors. Because field wiring remains connected to the base, compatible FLEX I/O modules can be replaced without disturbing external wiring, helping reduce maintenance time and improve system availability.
The terminal base includes 16 I/O terminals, 18 common terminals, and 18 power terminals, making it suitable for applications using 3-wire digital input devices such as proximity sensors, limit switches, and photoelectric sensors. Because field wiring remains connected to the base, compatible FLEX I/O modules can be replaced without disturbing external wiring, helping reduce maintenance time and improve system availability.
Revisions
Revision Part #
Also known as
Alternative Names
1794-T83S
179ATB3S
I79AT83S
1794T83S
I794-TB3S
1794TB3S
I794TB3S
179A-TB3S
I79A-T83S
Information
Overview
Manuals
Application Notes
Product Applications
Base Insertion & Mounting
Features:
- Spring Clamp Terminal Technology
- 36-Terminal 3-Wire Configuration
- 125V Continuous Isolation Voltage
- 10A Maximum Current Capacity
The terminal configuration of the Allen-Bradley 1794-TB3S includes three separate terminal strips with a total of 36 spring clamp terminals. The top terminal strip of the Allen-Bradley 1794-TB3S contains sixteen I/O terminals designated for wiring of input and output signals (positions 0–15). The middle terminal strip of the Allen-Bradley 1794-TB3S contains eighteen common terminals (positions 16–33), with –V Common located at terminals B-16 and B-33. The bottom terminal strip of the Allen-Bradley 1794-TB3S contains eighteen voltage terminals (positions 34–51), with +V (Voltage In) located at terminals C-34 and C-51.
The 1794-TB3S Allen-Bradley FLEX I/O Terminal Base Unit may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-TB3S FLEX I/O Terminal Base Unit 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.
Electrical specifications of the Allen-Bradley 1794-TB3S include a maximum voltage rating of 132V AC and 125V DC/AC at 50/60Hz. The Allen-Bradley 1794-TB3S provides 125V continuous isolation voltage between field wiring terminals and the FLEXBUS using Basic Insulation Type. The current capacity of the Allen-Bradley 1794-TB3S is rated at 10A maximum per terminal, with a backplane current draw of 640 mA at 5VDC for module power. The Allen-Bradley 1794-TB3S supplies 2A current to the I/O terminals and features V/COM terminals rated at 125V DC/AC and 10A.
- Packaging/Conveyor: Manages sensors, switches, and actuators for automated sorting and high-speed packaging
- Water/Wastewater: Supports telemetry panels with digital connections for flow, pressure, and valve monitoring
- Automotive: Deployed in robotics/assembly networks requiring organized, high-density wiring
- Process/Machine Control: Used for speed calculation, flow monitoring, and quantity counting in DCS
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.
Prepare the DIN Rail: Ensure your DIN rail is securely installed. For high-vibration environments, use DIN rail locks (catalog number 1492-EA35) at each end.
Engage the Base: Hook the terminal base over the top of the 35 x 7.5mm DIN rail.Lock in Place: Rotate the base down until it snaps onto the rail. Ensure the base is firmly pushed into the adjacent unit (or FLEX I/O Adapter) to properly connect the FlexBus backplane communication.
Set the Key Switch: Rotate the keyswitch on the terminal base to match the specific I/O module being inserted to ensure proper alignment and prevent incorrect module insertion.
Technical notes
The spring clamp designed for this terminal unit allows for easy assembly and wire connections, accommodating a wire size range of 22 to 12 AWG. This flexibility makes it suitable for a variety of wiring needs. In terms of environmental tolerance, the 1794-TB3S operates effectively in temperatures ranging from -20 to 70 degrees Celsius. Furthermore, it can be safely stored at temperatures from -20 to 85 degrees Celsius, making it resilient in varying operational conditions.
FAQs
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What is the main difference between the 1794-TB3S and the 1794-TB3?
+The "S" in 1794-TB3S stands for spring-clamp terminals. The standard 1794-TB3 uses traditional screw-clamp terminals. They are otherwise functionally identical and compatible with the exact same FLEX I/O modules -
Which FLEX I/O modules are compatible with this terminal base?
+The 1794-TB3S is a universal terminal base that supports all FLEX I/O module types, including digital, analog, and specialty modules. -
What is the voltage and current capacity?
+The base is rated for up to 125V AC/DC and has a maximum daisy-chain current capacity of 10 A. -
What modules are compatible with this terminal base?
+It features universal compatibility, supporting a wide range of 1794 FLEX I/O digital, analog, and specialty modules.
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32D UNITS,GUOMAO BUILDING,NO 388 HUBIN SOUTH ROAD,SIMING DISTRICT,XIAMEN