25. ALERT MANAGEMENT SYSTEM (option)
25.13 Responsibility Transfer Alert
MSC302(87) requires the use of the "responsibility transfer alert," which functions in
the multiple sensor, multiple equipment installation. When one sensor or one equip-
ment fails but does not disturb the system operation (other sensor or equipment is nor-
mal), the AMS automatically sends the "responsibility transfer alert" (ACN sentence)
to the sensor or equipment that generated the alert.
Some
External
alerts
Equipment
occur
If the sensor or equipment refuses the responsibility transfer, normal operation is re-
stored.
Some
External
alerts
Equipment
occur
If the HBT sentence is not received from equipment within the prescribed time interval,
the alert processed as responsibility transfer alert is made active and the "System
communication fail" alert is generated.
Some
alerts
Equipment
occur
25-12
ALF
Sensor
A
ACN
ALF
Sensor
A
ACN
HBT
External
Sensor
A
Check if there
CAM HMI
is problem for
system
Sensor
B
HBT timeout
computed.
AMS
Alert
re-generated.
Sensor
B
HBT timeout
computed
AMS
Alert
re-generated
Sensor
B