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ABB tb521-eth:ac500,terminal base,2slots
ABB 1SAP112100R0270 TB521-ETH is an AC500 V2 terminal base with one CPU position, two communication module slots, an Ethernet RJ45 interface connection and two RS-232 / RS-485 serial interfaces for modular industrial automation systems.
Why Choose the ABB TB521-ETH 1SAP112100R0270 AC500 V2 Terminal Base?
The ABB 1SAP112100R0270, type designation TB521-ETH, is a terminal base designed for ABB AC500 V2 programmable logic controller systems. It provides the mechanical mounting and electrical connection platform for an AC500 CPU together with communication modules, creating a compact foundation for modular industrial automation systems.
The TB521-ETH provides two communication module slots alongside the CPU position, allowing an AC500 system to be expanded with compatible communication modules according to the application. An integrated Ethernet RJ45 connection supports the Ethernet interface of compatible CPUs, while two serial interfaces provide RS-232 / RS-485 connectivity.
Designed for modular AC500 installations, the TB521-ETH also provides the connection path for direct expansion with compatible I/O modules. Its compact 123.5 × 135 × 28 mm dimensions and approximately 0.186 kg net weight make it a practical mounting base for machine control, process automation and distributed control applications.
Key Advantages
- Designed specifically as a terminal base for ABB AC500 V2 PLC systems.
- Provides a dedicated position for the AC500 CPU.
- 2 communication module slots enable modular communication expansion.
- Integrated Ethernet RJ45 interface connection for compatible AC500 CPUs.
- 2 serial interfaces provide RS-232 / RS-485 connectivity.
- Supports direct connection of compatible AC500 I/O expansion modules.
- Compact design helps simplify modular PLC panel construction.
- Part of ABB's established AC500 automation platform.
Key Features
- ABB type designation: TB521-ETH.
- ABB product ID: 1SAP112100R0270.
- Designed for AC500 V2 CPUs.
- 1 CPU position.
- 2 plug-in communication module positions.
- Ethernet RJ45 connection for the interface integrated in a compatible CPU.
- COM1 serial interface with pluggable terminal connection.
- COM2 serial interface with 9-pin D-Sub connection.
- Serial interfaces support RS-232 / RS-485.
- Fieldbus-neutral FieldBusPlug slave interface.
- I/O interface for direct connection of compatible expansion modules.
- Designed for modular industrial PLC installations.
- Compact panel footprint.
Modular AC500 PLC Mounting and Communication Connectivity
The ABB TB521-ETH forms the physical connection platform between a compatible AC500 V2 CPU, communication modules and downstream I/O expansion. Rather than functioning as a standalone PLC, the terminal base provides the mounting positions and interfaces required to assemble a modular AC500 control system around the selected CPU.
Two communication module positions allow additional communication functionality to be incorporated where required, while the Ethernet RJ45 connection routes the Ethernet interface of a compatible CPU. Two serial interfaces further support RS-232 / RS-485 communications, making the TB521-ETH suitable for AC500 installations requiring flexible connections to drives, operator interfaces, instrumentation and other compatible automation equipment.
Typical Applications
- ABB AC500 V2 PLC control systems.
- Industrial machinery and machine automation.
- Packaging and production equipment.
- Conveyors and material handling systems.
- Process automation and monitoring systems.
- Modular PLC control panels.
- Networked industrial automation systems.
- Systems requiring additional PLC communication modules.
- OEM machinery and system integration projects.
Technical Specifications
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| Device Type | Terminal Base / Unit | |
|---|---|---|
| Product Series | ABB AC500 | |
| Manufacturer | ABB | |
| Product family | AC500 | |
| Product type | AC500 V2 terminal base | |
| Type designation | TB521-ETH | |
| Product ID / order code | 1SAP112100R0270 | |
| EAN | 4016779711463 | |
| CPU positions | 1 | |
| Communication module slots | 2 | |
| Ethernet connection | RJ45 | |
| Serial interfaces | 2 × RS-232 / RS-485 | |
| COM1 connection | 9-pole pluggable terminal block | |
| COM2 connection | 9-pin D-Sub | |
| I/O expansion | Direct connection of compatible AC500 expansion modules | |
| Product net width | 123.5 mm | |
| Product net height | 135 mm | |
| Product net depth | 28 mm | |
| Product net weight | 0.186 kg | |
| Minimum order quantity | 1 piece | |
| Selling unit | 1 piece | |
| Commodity code | 85389091 |
Frequently Asked Questions
What is the ABB 1SAP112100R0270?
The ABB 1SAP112100R0270 is the order code for the TB521-ETH AC500 V2 terminal base. It provides a CPU position, two communication module slots, an Ethernet interface connection and two RS-232 / RS-485 serial interfaces for compatible ABB AC500 systems.
How many communication module slots does the TB521-ETH provide?
The ABB TB521-ETH provides 2 plug-in communication module slots in addition to the position used for the compatible AC500 CPU.
Does the ABB TB521-ETH include Ethernet connectivity?
Yes. The TB521-ETH includes an Ethernet RJ45 connection for the Ethernet interface integrated into a compatible AC500 CPU.
What serial interfaces does the TB521-ETH provide?
The terminal base provides 2 serial interfaces supporting RS-232 / RS-485. COM1 uses a pluggable terminal connection and COM2 uses a 9-pin D-Sub connection.
Is the ABB TB521-ETH 1SAP112100R0270 a PLC CPU?
No. The TB521-ETH is a terminal base for the ABB AC500 V2 platform. A compatible AC500 CPU and any required communication or I/O modules are installed separately to create the complete PLC system.
Modular Automation from ABB
ABB AC500 terminal bases provide the mounting and connection platform for modular PLC configurations, enabling compatible CPUs, communication modules and I/O expansion to be combined for industrial machine and process automation systems.
