TB20, distributed fieldbus I/O system
• Three-component module design
TB20 I/O modules have three components: a separate front connector, an electronic module, and a base module. A locking mechanism ensures that all modules can be quickly mounted and securely attached on DIN rails while guaranteeing a reliable electrical connection
• Hot-plug capability
Individual modules can be easily and quickly replaced while the remaining system continues to run
• Bus couplers
All bus couplers feature an integrated power module.
However, power modules are also available separately for users interested in segmenting the power supply for the I/O modules in their system.
• Front connector wiring
The system’s front connectors feature spring-type terminals throughout, and can be either snapped into place or wired without an electronic module.
• Simulation (I/O check)
The option of setting up TB20 I/O systems without a higher-level controller by directly reading and writing to inputs and outputs and configuring parameters for functionality testing purposes makes it easier to check the system’s wiring and entire design.
• Separate power supply segments for the coupler and the I/O components
If you want the loads to be completely powered by a different power supply or connected only until later on, a power and isolation module needs to be added right after the coupler.