STEVAL-XPLM01CPL

STEVAL-XPLM01CPL Power line communication AC coupling circuit Data brief Description The STEVAL-XPLM01CPL is a simple yet very useful tool for power line communication testing on AC power networks. It includes simple two-wire connectivity to any PLC transmitter/receiver and a standard connector for an AC power cord (2-pin AC plug, 8-shape female end). The main components to achieve suitable signal coupling are: - PLC 1:1 transformer for differential coupling and basic electrical isolation - SM6T15CA 600 W Transil +320 V ac varistor Features for effective protection against ESD, EFT and surge disturbances from the power line Complete AC coupling circuit suitable for use with any power line communication - High voltage AC blocking capacitor with X2 (PLC) solution safety class Can be paired with the X-NUCLEO- - Tuning series inductor to adjust the frequency PLM01A1 to add full AC coupling capability response Tuned for transmission inside CENELEC B to D bands The STEVAL-XPLM01CPL can be very easily Implements isolation and protections for safe interfaced with the X-NUCLEO-PLM01A1 to test operation PLC communication performance over an AC Suitable for the connection of laboratory mains network. equipment for PLC measurement and The frequency response of the coupling circuit is testing wide enough to fit any narrow-band PLC signal RoHS compliant under normal test conditions. However, it can be easily adjusted by changing only the tuning series inductor L1. The STEVAL-XPLM01CPL is suitable for lab measurements using equipment like an isolated probe for an oscilloscope or a spectrum analyzer, or to inject a signal from an arbitrary function generator. June 2017 DocID030653 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-XPLM01CPL 1 Schematic diagram Figure 1: STEVAL-XPLM01CPL circuit schematic L1 C2 4.7H 470nF X2 C1 SIGNAL 4 7 P CN1 J1 10F 1 1 D1 SIOV1 2 2 SM6T15CA S14K320/EPC F1 1 10 N SIGNAL CONNECTOR MAINS CONNECTOR T1 4A - T TDK SRW13EP-X05H002 / WE 750-510-231 IMPORTANT Safety recommendations The STEVAL-XPLM01CPL must be used by expert technicians only. Due to the high voltage (85 - 265 Vac) present on the non-isolated parts, special care must be taken in order to avoid electric risks for people safety. There are no protections against high voltage accidental human contact. After disconnection of the board from the mains, no live part can be touched immediately because of the energized capacitor. Do not connect any instrument probe to high voltage parts if the board is not isolated from the mains supply, in order to avoid damaging any equipment. ST assumes no responsibility for the consequences of any improper use of this development tool. 2/4 DocID030653 Rev 1 U