Operators Handbook DCU3 – System
6., Main function „Control Loops“
BAEDCU3 - Rev. 4.6 - 0504 6 - 38
6.23.2 Special Notes
Alarms will be displayed and can be answered as follows :
1. When an alarm occurs for the first time, an alarm message is generated and displayed.
Press the „ACK"nowledge key to confirm. This also deletes this alarm message.
2. The display of the process value changes its colour to red.
The DCU-System displays an alarm as long as the process value exceeds the alarm limits.
If the same process value alarm occurs several times, all alarms are stored and must be
confirmed extra.
At more than 20 unconfirmed alarms in the alarm buffer, the system generates the message
„too many alarms“ and does not store additional alarms.
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