Emerson Oxymitter 5000 Instruction Manual page 159

Model 4081FG Oxygen Analyzer with F
Symptom
Mode sheds from 1. Remote output value
ROUT to MAN
2. Shed timer
Process and/or 1. Features
block alarms will not
work.
2. Notification
3. Status Options
fieldbus Communications
OUNDATION
Possible Causes
1. Host system is not writing ROUT_IN
with a quality and status of "good
cascade" within shed time (see 2 below).
2. The mode shed timer, SHED_RCAS, in
the resource block is set too low. Increase
the value.
1. FEATURES_SEL does not have Alerts
enabled. Enable the Alerts bit.
2. LIM_NOTIFY is not high enough. Set
equal to MAX_NOTIFY.
3. STATUS_OPTS has Propagate Fault
Forward bit set. This should be cleared to
cause an alarm to occur.
Corrective Action
C-17
C