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• If your transmitter has a display, you can view the status LED with the transmitter
housing cover in place.
• If your transmitter does not have a display, you must remove the transmitter housing
cover to view the status LED.
CAUTION!
If the transmitter is in a hazardous area, do not remove the housing cover while power is
supplied to the unit. Removing the housing cover while power is supplied to the unit could
cause an explosion. To view transmitter status in a hazardous environment, use a
communications method that does not require removing the transmitter housing cover.
To interpret the status LED, see the following table.
Status LED statesTable 8-1:
LED behavior Alarm condition Description
Solid green No alarm Normal operation
Flashing yellow No alarm Zero in progress
Solid yellow Active low-severity
alarm
Alarm condition that will not cause measure-
ment error (outputs continue to report proc-
ess data)
Solid red Active high-severity
alarm
Alarm condition that will cause measurement
error (outputs in fault)
8.3 View and acknowledge status alarms
The transmitter posts status alarms whenever a process variable exceeds its defined limits
or the transmitter detects a fault condition. You can view active alarms, and you can
acknowledge alarms.
8.3.1
View and acknowledge alarms using the display
You can view a list containing all alarms that are active, or inactive but unacknowledged.
Note
Only Fault and Informational alarms are listed. The transmitter automatically filters out alarms with
Status Alarm Severity set to Ignore.
Prerequisites
Operator access to the alarm menu must be enabled (default setting). If operator access to
the alarm menu is disabled, you must use another method to view or acknowledge status
alarms.
Transmitter operation
132 Micro Motion
®
9739 MVD Transmitters