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Technical Specifications and Interface Features
The ABB 1SAP210400R0001 bus terminal unit, also known as TU552-CS31, serves as a dedicated interface terminal for the AC500 PLC platform’s S500 I/O family . This module specifically supports the CS31 fieldbus protocol for connecting communication bus modules to the system . It features spring-clamp terminals for fast and tool-free wiring, significantly reducing installation time compared to traditional screw terminals . The unit’s dimensions measure 67.5 mm x 135 mm x 28 mm (W x H x D), and it weighs just 0.159 kg . This terminal unit operates on a 24V DC supply voltage and carries an IP20 protection rating for control cabinet installations .
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | 1SAP210400R0001 |
| Product Name | TU552-CS31 |
| Product Family | AC500 / S500 I/O |
| Function | CS31 protocol interface terminal unit |
| Connection Type | Spring-clamp terminals |
| Supply Voltage | 24V DC |
| Protection Degree | IP20 |
| Dimensions (W x H x D) | 67.5 x 135 x 28 mm |
| Net Weight | 0.159 kg |
| Gross Weight | 0.192 kg |
| Ambient Temperature (Operation) | 0°C to +60°C |
| Ambient Temperature (Storage) | -40°C to +70°C |
| Country of Origin | Germany / Finland |
| Product Status | Active |
Functional Capabilities
The 1SAP210400R0001 terminal unit acts as the physical interface between the CS31 fieldbus network and the AC500 PLC system. Its spring-clamp technology ensures secure and vibration-resistant connections for reliable signal transmission in industrial environments . The terminal unit passes bus signals and power between the communication module and the I/O system. This design simplifies wiring and facilitates module replacement without disturbing existing field connections. The unit also provides potential distribution for the 24V DC supply voltage to connected modules.
Application Scenarios
This bus terminal unit suits CS31-based distributed I/O applications within the AC500 automation platform. It integrates with CS31 communication modules for fieldbus connectivity in machine control and process automation. The ABB TU552-CS31 serves as an essential component for connecting I/O modules and communication bus modules in control cabinets . Its active product status ensures availability for new projects and system expansions.