What should I do if PCR-WE/WE2/WEA/WEA2/M2 series is powered on and “TRBL-19 EXT.SHUTDOWN” is displayed on the panel with the alarm sounds?

The shutdown function is activated. Turn the power off and connect the included external control connector to the DIGITAL I/O connector to release the shutdown function. For the details, please read the user’s manual or the setup guide.