ABB ci590-cs31-ha:s500,bus module 16dc,2xcs3

Why Choose the ABB CI590-CS31-HA High Availability CS31 Interface Module?

The ABB CI590-CS31-HA is a high-availability CS31 communication interface module for ABB AC500 and S500 distributed automation systems. Designed for decentralised I/O applications requiring communication redundancy, it incorporates two independent CS31 bus interfaces together with 16 configurable 24 V DC digital input/output channels.

The two electrically isolated RS485 interfaces allow the CI590-CS31-HA to connect to two separate CS31 field buses, providing redundant communication paths for high-availability automation architectures. Its 16 configurable channels can operate as 24 V DC digital inputs, transistor outputs or re-readable combined input/output channels, providing flexible local I/O alongside the redundant communications interface.

When configured as outputs, the channels provide a maximum output current of 0.5 A per channel and incorporate short-circuit and overload protection. The module also features status and diagnostic LEDs, rotary switches for setting the module address and compatibility with ABB TU551-CS31 and TU552-CS31 terminal units. The ABB product ID for the CI590-CS31-HA is 1SAP221100R0001.

Key Advantages

• Designed for high-availability and redundant CS31 automation systems.
• Two independent RS485 CS31 interfaces provide redundant communication paths.
• 16 configurable 24 V DC digital input/output channels provide flexible local I/O.
• Digital outputs support up to 0.5 A per channel.
• Output channels include short-circuit and overload protection.
• Galvanic isolation between the I/O group, CS31 buses and other modules supports reliable industrial operation.

Key Features

• ABB S500 / AC500 CS31 communication interface module.
• 2 independent CS31 bus interfaces.
• RS485-based CS31 fieldbus communication.
• 16 configurable digital input/output channels.
• 24 V DC digital input operation.
• 24 V DC transistor outputs rated up to 0.5 A.
• Re-readable output functionality for combined input/output operation.
• Short-circuit and overload-protected outputs.
• Group-wise galvanic isolation of digital I/O from the CS31 buses and other modules.
• Individual electrical isolation of each CS31 bus from other terminals.
• Rotary switches for module addressing.
• LED indication for I/O states, communication, operating voltage and errors.

Redundant CS31 Communication for High-Availability Automation

High-availability automation architectures use redundant communication paths to reduce dependence on a single fieldbus connection. The ABB CI590-CS31-HA provides two separate CS31 interfaces, allowing decentralised I/O to communicate through redundant CS31 buses in compatible ABB high-availability control systems.

In addition to redundant communication, the module provides 16 configurable digital channels that can be individually used for input, transistor output or re-readable output functions. This combination of communication and local I/O functionality makes the CI590-CS31-HA particularly suitable for distributed control applications where system availability and flexible signal handling are important.

Typical Applications

• ABB AC500 high-availability automation systems.
• Redundant CS31 fieldbus networks.
• Decentralised industrial I/O stations.
• Process and production automation systems.
• Industrial machinery requiring redundant control communications.
• Distributed monitoring and control applications.