ABB | AC500 high-availability CS31 slave interface with configurable digital I/O
ABB CI590-CS31-HA Redundant CS31 Interface Module
Media-redundant CS31 communication supports high-availability remote I/O with configurable discrete channels.
ManufacturerABB
ModelCI590-CS31-HA
LifecycleActive
01
Product Identification
CI590-CS31-HA is the ABB redundant CS31 communication-interface module for high-availability AC500 architectures. It provides dual CS31 media connections and configurable discrete channels while synchronizing its role within the supported HA system. The module has dedicated status indication for power, bus, synchronization and errors.
02
Engineering Data
| Manufacturer | ABB |
|---|---|
| Article Number | 1SAP221100R0001 |
| Network Role | Redundant CS31 slave |
| Media Architecture | Dual CS31 connections |
| Configurable Digital I/O | 16 channels at 24 V DC, 0.5 A maximum |
| Counter Function | Fast counter supported |
| Address Setting | Two rotary switches, 00 to 99 |
| Module Isolation | Module-wise galvanic isolation |
| Product Lifecycle | Active |
03
Functions
- Maintains redundant CS31 media communication in a supported AC500 high-availability system.
- Allows each onboard discrete channel to be assigned as input or output.
- Reports synchronization, bus, supply and channel conditions through dedicated LEDs.
- Provides local fast-counter capability when configured for the supported mode.
- Exchanges I/O data according to the HA-CS31 control architecture.
04
Applications
- High-availability AC500 systems using redundant CS31 remote stations.
- Processes where communication-media continuity is engineered into the control design.
- Service replacement of an installed CI590-CS31-HA with retained HA configuration.
- Remote discrete I/O requiring configurable channel direction.
- Maintenance work that includes synchronization and changeover verification.
05
Lifecycle
- ABB lists the standard CI590-CS31-HA article as Active.
- The XC environmental version has a separate order number.
- ABB documents specific module and library compatibility limits for the HA-CS31 system.
- Ordinary S500 expansion modules must not be assumed compatible with CI590-CS31-HA.
- Back up HA parameters and verify synchronization behavior after replacement.
