The series 9494 bus rails are used as a backplane bus for the IS1+ remote I/O system. They include an Ex i power bus boasting high availability, a redundant Ex i data bus and address lines.
The bus rails are available for 2 or 4 modules and can be combined for up to 18 modules. The BusRail extension cable can be used to place BusRail segments anywhere in the field enclosure.
Features
For the internal electrical connection between CPU & power module and up to 16 I/O modules
Redundant data bus, power bus with high availability
Simple, protected installation in NS35/15 DIN rails