| Manufacture | ABB |
| Model | TU811V1 |
| Ordering information | 3BSE013231R1 |
| Catalog | 800xA |
| Description | Compact Module Termination Unit 1x8 signal terminals. |
| Origin | Bulgaria (BG) |
| HS Code | 85389091 |
| Dimension | 16cm*16cm*12cm |
| Weight | 0.8kg |
The TU811V1 is a 8 channel 250 V compact module termination unit (MTU) for the S800 I/O. The MTU is a passive unit used for connection of the field wiring to the I/O modules. It also contains a part of the ModuleBus.
The MTU distributes the ModuleBus to the I/O module and to the next MTU. It also generates the correct address to the I/O module by shifting the outgoing position signals to the next MTU.
Two mechanical keys are used to configure the MTU for different types of I/O modules. This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module. Each key has six positions, which gives a total number of 36 different configurations.