3-LCD operating instructions
EST3 System Operation Manual 2.7
Functional description of 3-LCD controls and indicators (see Figure 2-1)
Index
Control or
indicator Functional description
n/a Buzzer The buzzer on the 3-CPU1 sounds to alert the operator to off-
normal system conditions, such as:
• Active alarms
• Active test or disabled zones
• Active fault conditions
• Active monitor conditions
The buzzer sounds a pattern associated with each event as
determined by the market place settings.
Alarm: 3-3-3 pattern
Supervisory: 2-2 pattern
Trouble: 30 pulses per minute
Monitor: 3-3-3 pattern
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