If the initialization of panel takes much time (about 5 minutes)

The AMX controller is an NI-3100. The initialization takes about 5 minutes (give or take). The interface hangs first and then starts to receive all statuses at once. After the initialization everything works OK

The problem was the Intercom Module.
Remove the iPad running the iRidium from the intercom and it no longer freeze at startup

iRidium doesn't support an AMX intercom.