Allen Bradley Flex I/O 1797-BIC | FLEX Ex Bus Isolator Module

Product Description

The Allen Bradley Flex I/O 1797-BIC Bus Isolator Module provides galvanic isolation for intrinsically safe Flex I/O systems. Designed for hazardous area applications, it ensures safe communication between Flexbus segments while maintaining compliance with international standards. With DIN rail mounting and robust construction, it is ideal for environments requiring reliable isolation and intrinsically safe connections.

Technical Specifications

• Model / Part Number 1797-BIC

• Manufacturer Allen Bradley (Rockwell Automation)

• Product Line Flex I/O 1797 Series

• Product Type FLEX Ex Bus Isolator Module

• Weight 1.38 lbs (0.62 kg)

• Mounting DIN rail

• Flex I/O Modules Supported Up to 8 modules

• Indicators Power LED (green when power applied)

• Isolation Path Galvanic isolation per DIN EN 60079-11

• Power Consumption 18–32 VDC @ 0.15 A

• Power Dissipation 2.1 W

• Thermal Dissipation 7.2 BTU/hr

• IS Module Type [Ex ib] IIC

• Conductor Wire Size Up to 4 mm² (12 AWG stranded)

• Output (CENELEC Intrinsically Safe)

• Uo < 5.75 VDC

• Io < 400 mA

• Po < 2.05 W

• Lo < 100 µH

• Co < 39 µF

• Output (FM and cULus Intrinsically Safe)

• Vt < 5.75 VDC

• It < 398.25 mA

• Ca < 39.67 µF

• La < 210 µH

• Connection Type Intrinsically safe connections

• Certification CE compliant

• Operating Temperature –4°F to +158°F (–20°C to +70°C)

• Compatible Cables 1794-CE1 and 1794-CE3

Application Scenarios

• Hazardous area installations requiring intrinsically safe isolation

• Expansion of Flex I/O systems in oil, gas, and chemical industries

• Industrial environments needing galvanic isolation for safe bus communication

FAQ

Q: How many Flex I/O modules can the 1797-BIC support?  A: Up to 8 modules.

Q: What type of isolation does it provide?  A: Galvanic isolation compliant with DIN EN 60079-11.

Q: What is the operating temperature range?  A: –4°F to +158°F (–20°C to +70°C).

Q: Which cables are compatible?  A: The 1794-CE1 and 1794-CE3 cables.