PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-ASB2 is a Remote I/O Adaptor within the FLEX I/O series. It supports integration of up to two modules for expanded functionality. The unit operates within an input voltage range of 19.2 to 31.2 V DC. Its nominal operating voltage is 24 V DC. The adaptor supplies up to 640 mA of maximum FlexBus current for connected devices.
Communication capabilities include selectable speeds of 57.6, 115.2, and 230.4 Kbps. Total power consumption for the unit is rated at 4.2 W. The device provides a 24V source load capacity of 175 mA. Continuous isolation voltage is rated at 50 V. Operating temperature spans from -20 to 55 degrees Celsius. Protection ratings include 8 kV air ESD, 10 V/m RF immunity, and ±2 kV EFT and surge immunity.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
|---|
| UPC | 612598170890 |
|---|
| Weight | 0.56 lbs (0.26 kg) |
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| Module Capacity | 2 Modules |
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| Communication Speed | 57.6/115.2/230.4 Kbps |
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| Input Voltage | 19.2–31.2 V DC |
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| Nominal Voltage | 24 V DC |
|---|
| FlexBus Current | 640 mA max |
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| Power Use | 4.2 W |
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| 24V Load | 175 mA |
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| Isolation | 50 V Continuous |
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| ESD Protection | 8 kV Air Discharge |
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| RF Immunity | 10 V/m |
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| EFT Immunity | ±2 kV |
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| Surge Immunity | ±2 kV |
|---|
| Operating Temp | -20 to 55°C |
|---|
TECHNICAL INFORMATION
Features
- Supports integration of up to two Flex I/O modules.
- Provides communication speeds of 57.6, 115.2, and 230.4 Kbps.
- Delivers up to 640 mA maximum FlexBus current.
- Operates with nominal 24 V DC input spanning 19.2 to 31.2 V DC.
- Provides 50 V continuous isolation protection.
- Features ±2 kV electrical fast transient and surge immunity.
- Withstands electrostatic discharge up to 8 kV air discharge.
TECHNICAL INFORMATION
Connections / Interfaces
- FlexBus interface supporting up to two connected modules.
- Remote I/O network interface with selectable baud rates up to 230.4 Kbps.
- Power input connection for nominal 24 V DC supply.
TECHNICAL INFORMATION
Installation Guidelines
- Provide an incoming power supply within 19.2 to 31.2 V DC.
- Ensure connected module load demands do not exceed 640 mA on the FlexBus.
- Verify that current draw on the 24V source does not exceed 175 mA.
- Maintain operational ambient temperatures between -20 and 55 degrees Celsius.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure communication rates to 57.6, 115.2, or 230.4 Kbps to match network requirements.
- Verify connected module capacity does not exceed the two-module physical limit.
TECHNICAL RESOURCES
Documentation
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the module capacity of the Allen-Bradley 1794-ASB2?
The 1794-ASB2 supports integration of up to two modules.
What communication speeds are available on the 1794-ASB2?
The unit supports adjustable communication speeds of 57.6, 115.2, and 230.4 Kbps.
What are the input power specifications for the 1794-ASB2?
The adaptor operates on nominal 24 V DC power with an input range of 19.2 to 31.2 V DC.
What is the indicative reference price for the 1794-ASB2?
Refurbished units have an indicative reference price of 946.00 USD. This is an indicative market reference only, not a final quotation.
