ABB ci592-cs31:s500,bus mod.8di/4ai/2ao/8dc

Why Choose the ABB CI592-CS31 CS31 Communication Interface Module?

The ABB CI592-CS31 is a versatile S500 CS31 communication interface module designed for decentralised I/O applications within ABB AC500 automation systems. It combines CS31 fieldbus connectivity with digital and analogue I/O in a single module, providing a flexible solution for connecting sensors, actuators and process signals to an ABB CS31 network.

The CI592-CS31 provides 8 dedicated 24 V DC digital inputs, 8 configurable 24 V DC digital input/output channels, 4 analogue inputs and 2 analogue outputs. The analogue inputs support voltage, current and RTD measurements, while the analogue outputs support voltage and current signals. Both analogue input and output conversion provide 12-bit plus sign resolution.

Communication with the CS31 fieldbus is provided through an RS485 serial interface. The module can be installed on ABB TU551-CS31 or TU552-CS31 terminal units and supports expansion with additional S500 I/O modules. Module-wise galvanic isolation, integrated diagnostics and fast-counter functionality make the CI592-CS31 suitable for flexible distributed industrial automation. The ABB product ID is 1SAP221200R0001.

Key Advantages

• Combines digital I/O, analogue I/O and CS31 communication in one module.
• 8 dedicated digital inputs plus 8 configurable digital input/output channels.
• 4 universal analogue inputs support voltage, current and RTD measurements.
• 2 analogue outputs support voltage and current signals.
• Configurable digital outputs are rated at up to 0.5 A per channel.
• Integrated fast-counter functionality supports higher-speed signal acquisition.
• Can be expanded with additional ABB S500 I/O modules for scalable distributed automation.

Key Features

• ABB S500 / AC500 CS31 communication interface module.
• Operates as a decentralised I/O module on the CS31 fieldbus.
• RS485 CS31 bus interface.
• 8 digital inputs, 24 V DC.
• 8 configurable digital inputs/outputs, 24 V DC.
• Configurable digital outputs rated up to 0.5 A.
• 4 analogue inputs for voltage, current and RTD signals.
• 2 analogue outputs for voltage and current signals.
• 12-bit plus sign analogue resolution.
• Integrated fast-counter functionality.
• Module-wise galvanic isolation.
• Rotary switches for module address configuration.
• LED indication for digital and analogue channel states, process voltage and errors.
• Compatible with ABB TU551-CS31 and TU552-CS31 terminal units.

Flexible Mixed I/O for ABB CS31 Automation

The ABB CI592-CS31 reduces the number of separate modules required in distributed automation by combining digital inputs, configurable digital I/O and analogue signal processing with a CS31 communications interface. Its four analogue inputs accommodate voltage, current and resistance-temperature signals, making the module suitable for applications involving both discrete machine signals and process instrumentation.

The module connects to existing CS31 networks through RS485 and can be expanded with up to seven compatible S500 I/O modules when additional signal capacity is required. Installation on a TU551-CS31 or TU552-CS31 terminal unit also allows the interface module to be replaced without disconnecting the field wiring, supporting efficient commissioning and maintenance.

Typical Applications

• ABB AC500 and S500 distributed automation systems.
• CS31 decentralised I/O stations.
• Machine and production automation.
• Process monitoring with analogue sensors and transmitters.
• RTD temperature measurement applications.
• 24 V DC sensor and actuator interfacing.
• Mixed digital and analogue industrial control systems.
• Expansion and modernisation of existing ABB CS31 installations.