Troubleshooting
Procedure
Verify the configuration of
Frequency Output Mode
.
10.20
Check
Frequency Output Maximum Pulse Width
and
Frequency
Output Scaling Method
Procedure
1.
Verify the configuration of
Frequency Output Scaling Method
.
The scaling method should be set as required by your frequency receiving device. If you change
the scaling method, you may need to configure additional frequency output parameters.
2.
Verify the configuration of
Frequency Output Maximum Pulse Width
.
For most applications, the default frequency pulse width is appropriate. This corresponds to a
50% duty cycle.
10.21
Check
Frequency Output Fault Action
Procedure
1.
Check the status alarms for fault conditions.
If no fault conditions are present, the source of the problem is something other than the frequency
output fault configuration.
2.
Check the configuration of
Frequency Output Fault Action
.
10.22
Check
Flow Direction
The interaction of the flow direction parameter, flow values reported by the transmitter, and flow totals
reported by the transmitter is complex. For the simplest operation, actual process flow should match the
flow arrow printed on the side of the sensor case.
Procedure
1.
Verify the actual direction of process flow through the sensor.
2.
Verify the configuration of
Flow Direction
.
10.23
Check cutoffs
There are separate cutoff parameters for mass flow, volume flow (including gas standard volume flow),
and density. Furthermore, there is an independent cutoff for each mA output. The interaction between
cutoffs sometimes produce unexpected results.
Procedure
Verify the configuration of the cutoffs.
194
Micro Motion 9739 MVD Transmitters
