Version 2.02 15.05.2007
Alarms and Messages of VS 3000
115
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9.1 Reporting system
A number of messages are recognized by the system and logged in the internal fault memory with date, time
and priority. Receive/Send messages are logged in fault memory. Time resolution is 1 minute.
Messages are in fault memory in their order of occurrence. Capacity of the fault memory is sufficient to store
200 entries. When the memory is full, the next message received overwrites the oldest entry (ring buffer).
The fault memory is battery-backed, meaning that messages will not be lost in a power failure.
Alarms/messages can be retrieved with a setup unit (AL 300 Operator Terminal or CI 3000 Store Computer).
The most recent message is displayed first in the list. Contents of the fault memory can be deleted with the
setup unit. Messages are also transmitted via the CAN bus, enabling the current message to be displayed on
the setup unit and a central fault memory to be built with the CI 3000 Store Computer for the complete refriger-
ation system.
9.2 Structure of alarms/messages
Messages are made up of the date and time of event, priority and specific message text in real language. They
are presented on the display of the setup unit in three lines of 20 characters. One line is used to identify the ac-
tive controller.
Line Example Data
1 Messages ID: xxxxx Active controller
2 Motor overload cutout C1 Message
3 20.5.98 10:20 ON Date and time of message
4 20.5.98 10:25 OFF Fault corrected
Four alarm priorities may be used:
-- Alarm not entered in alarm log
0 Alarm entered in alarm log but not transmitted to higher--order system components
1 Alarm entered in alarm log and transmitted to higher--order system components with Prio. 1
2 Alarm entered in alarm log and transmitted to higher--order system components with Prio. 2
In a compressor fault condition, an alarm is automatically upgraded to Priority 1 when 50% of the c ompressors
have failed. From Version 2.0, change of alarm priority results in automatic generation of a Priority 0 message
(archived in message log only) reading as follows:
Prio M xxx: p1 > p2
where gilt xxx = Alarm/message number
p1: Previous alarm priority
p2: New alarm priority
9 Alarms and Messages of VS 3000
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