This application note describes the CLT3-4BT6 product and provides an example board to evaluate the robustness and immunity of the CLT3-4BT6 device.
The document provides a functional description of the CLT3-4BT6, a Current Limited Termination device designed for industrial automation. It explains how the device achieves high-density termination by minimizing external component count while protecting input modules against transient electromagnetic interferences according to IEC61131-2 standards.
The note details the specifications and operation of a dedicated demonstration board (CLT3-4BT6 demoboard) used to evaluate the product's robustness. It includes operating instructions for connecting power supplies, sensors, and digital bus controllers, along with specific advice on discrete components like capacitors, resistors, and opto-couplers.
| Channels configuration | four channels |
|---|---|
| Package type | TSSOP20 surface mount package |
| Operating voltage range | 10 to 30Vdc |
| Opto-coupler on-state current | minimum 1.5mA |
The IEC61131-2 international standard specifies the Electromagnetic Compatibility (EMC) requirements.
The required air discharge level is +/-8kV.
They can be placed at the output of the CLT device (between the CLT device and the opto-coupler).