Type 9491/T1 termination boards and the corresponding type 9491/Z1 connection cables are accessories for the IS1+ Remote I/O system. The devices can be used in hazardous areas in Zone 2 as well as in safe areas, and are used for parallel switching of non-intrinsically safe field circuits of two IS1+ I/O modules of the same type (from firmware 4.xx) and thereby enable I/O redundancy.
- Redundant operation of IS1+ I/O modules
- Suitable for I/O modules with non-intrinsically safe I/O from firmware 4.xx
- Simple installation on DIN rail and connection via push-in terminals
- Installation in Zone 2