Schneider Electric’s specially developed Modicon TM3 I/O system enables flexible and customizable expansion of the I/O terminals in all of the controllers. Up to 14 terminals can be added to the controllers without tools. When the terminals are plugged in, their contacts are electrically linked to both the controller and the adjacent terminal. This high-speed expansion bus is 10 times faster than traditional solutions.
- Digital I/O modules which can be used to create configurations with up to 264 digital I/O. These modules are available with the same connections as the controllers.
- Analog I/O modules which can be used to create configurations with up to 114 analog I/O and are designed to receive, amongst other things, position, temperature or speed sensor signals. They are also capable of controlling variable speed drives or any device equipped with a current or voltage input.
- Expert modules for the control of TeSys motor starters which simplify wiring up the control section due to connection with RJ45 cables.
- Functional Safety modules which simplify wiring and can be configured in the EcoStruxure Machine Expert – Basic software.
In addition, the Modicon TM3 expansion system is flexible due to the possibility of remotely locating some of the Modicon TM3 modules in the enclosure or another cabinet (up to 5 meters away, using a bus expansion system. It is common to the whole range of Modicon M221, M241 and M251 logic controllers, meaning that the model of controller can be revised without changing expansion module.