Emerson Daniel 3410 Series Maintenance And Troubleshooting Manual page 15

Maintenance and Troubleshooting manual
DAN-20057317
• Field I/O
• Validity
• Comms
• Check Status
2.1.2 System alarm
The System alarm indicates a failure in the hardware that should be addressed by a service
technician. This includes memory checksum errors and communication errors within the
hardware. A Red LED indicates a system alarm condition. Collect a Maintenance log and an
audit/alarm log and then, contact your Daniel service representative. This could be an
alarm condition that occurred and remains latched until the condition is resolved and the
alarm is cleared by clicking the ACK button on the Monitor → Check Status → Status
Summary page.
2.1.3 Chord A, Chord B, Chord C, Chord D, Chord E, Chord F,
Chord G and Chord H alarm
Chord A, Chord B, Chord C, Chord, D, Chord E, Chord F, Chord G and Chord H - These
alarms indicate how a chord is functioning.
Table 2-1: LED colors
LED Color
Green
Yellow
Red
Gray
2.1.4 Field I/O alarm
Reports various field I/O devices that are in alarm. Click the Check Status button for more
details on specific alarms. The field is grayed out if the Daniel 3410 Series Ultrasonic Gas
Flow Meter does not support this alarm.
Model 3418 GUSM
Problem
No alarms are present. Chord is operating properly.
The chord has failed or is in acquisition. This chord is not used for this batch. Chord
that have failed or are shown to be in acquisition for repeated batches indicates that
the meter should be inspected by a service technician. The chord has manually been
set to inactive. At least one sample in the batch caused an alarm but it did not cause
the chord to fail. The sample will not be used in the batch. Discarding occasional
samples can occur during normal operation such as during flow velocity changes.
The in-use length is not equal to the calculated length for chord. If this is a new
meter or an upgraded meter, check that the chord length and correct if needed. If
incorrect, check all meter parameters against the meter Zero Flow Calibration
report. This report can be requested from your local area Daniel service
representative.
The chord has manually been set to inactive.
Troubleshooting
August 2021
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