Product data

Publication 1785-SG001B-EN-P - June 2006
Select I/O Modules 15
1797 FLEX Ex I/O Modules
The 1797 series I/O modules (FLEX Ex I/O) are a flexible I/O system that
mounts directly to the controlled equipment in a hazardous area. This
eliminates the need for intrinsically safe (IS), barriers/isolators and separation
of control and process. Additionally, the modules:
• offer modularity for distributed intrinsically-safe systems.
• have dual-fault protection IS circuits that provide high fault tolerance.
• have I/O circuitry that provides full IS field-device protection.
PLC-5 controllers support 1797 I/O over these networks:
• Remote I/O
• ControlNet
• DeviceNet
When you select 1797 FLEX Ex I/O modules, you must also select:
• adapter module and cabling components.
• bus isolator module and cabling components.
• terminal base unit.
• DIN rail.
• power supply.
For more information about 1797 FLEX Ex I/O, see the FLEX I/O and
FLEX Ex I/O Selection Guide, publication 1794-SG002.