T9401 T9402 Digital Input Module AADvance

The 9401 (8 channel) and 9402 (16 channel) are 24Vdc digital input modules. They accept galvanically isolated inputs and perform signal conditioning and conversion.

The modules incorporate extensive diagnostics. Individual modules are simplex (non-redundant), fail-safe, and certified for use in SIL 3 applications.

Redundancy and fault tolerance is achieved by grouping two or three modules together with common field connections.

Modules can be removed and replaced online without system interruption when used in redundant (dual or triple) configurations.

Sequence of events (SOE) resolution is 10 msec.

The modules measure analog voltage in order to perform line monitoring and field fault detection (e.g., open / short circuits).

Switching levels for each input channel are configurable in the workbench.