Intended Purpose

The High Availability CS31 Bus module CI590-CS31-HA is used as a decentralized I/O module on CS31 field buses. The CI590-CS31-HA contains two RS485 interfaces for connecting the module to two separate CS31 Buses to have redundancy/backup or high availability. In addition, the CI590-CS31-HA provides 16 I/O channels with 16 configurable digital inputs/outputs (C0 … C15) in one group. This group can be used as follows:

• 24 V DC input
• 24 V DC transistor output, 0.5 A (max.), short-circuit and overload protected
• re-readable output (combined input/output) with identical technical data of the digital inputs and outputs

The inputs and outputs are group-wise electrically isolated from the CS31 Buses and from other modules. Each CS31 Bus is electrically isolated from other terminals.