Audio tone alarms & event
What are the standard audio tone for (1)Emergency Shutdown,(2) Alarm which requires immediate action & (3)Alarm which action but not urgent & (4)for event?
Does ABB has some standard for audio alarm?
"ESD" - continuous beeps until acknowledge.
"Alarm which requires immediate operator action" - single beep.
"Alarm which action not urgent" and "event" - silence. Visual indication on the screen is enough.
Audible alarms may vary depend on the local safety regulations and customer preferences.