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28
Reference Manual
00809-0100-4140, Rev AA
January 2017
Sensor limits
shows the sensor limits applied when a device variable is mapped to the PV
dynamic variable. They are used for scaling gauges in a Host system (e.g. AMS Device
Manager) and for validating the range points in the analog output (
).
Note
“Dynamic variables configuration” on page 13
for related information.
Table 2-4. Sensor Limits for Device Variables
2.8.9
Scaled Variable damping
Damping is an optional parameter for changing the response time of the level detector
when the PV is mapped to the Scaled Variable. Increasing the damping value can smooth
wide variations in the output caused by rapid input changes, but at the cost of decreasing
response times.
Damping settings range from 0.0 to 60.0 seconds. An appropriate damping setting is a
balance of the necessary response time, signal stability, and other requirements of the loop
dynamics within your system.
Carefully read displayed warnings that appear before applying changes.
Note
Versions of the Rosemount 2140 with the Extended Features Package (EFP) can re-map the
PV to Scaled Variable.
Damping with a Field Communicator
1.
From the Home screen, select
2: Configure
.
2.
Select
2: Manual Setup >
2: Analog Output
>
2: Set Range Points
.
3.
Select
4: Damping
.
4.
Enter the damping setting.
Device Variables
Lower PV Limit
Upper PV Limit
Output State
0.0
1.0
Sensor State
0.0
1.0
Sensor Frequency
250.0 Hz
1800.0 Hz
Electronics Temperature
–40 °C
85 °C
Terminal Voltage
10.5 V
42.4 V
Scaled Variable
Defined by sensor frequency limits and scaling data.
Fast keys
2, 2, 2, 2, 4
Summary of Contents for Rosemount 2140
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Page 8: ...VI Reference Manual 00809 0100 4140 Rev AA Contents January 2017 Contents ...
Page 14: ...4 Reference Manual 00809 0100 4140 Rev AA Introduction January 2017 Introduction ...
Page 112: ...102 Reference Manual 00809 0100 4140 Rev AA Troubleshooting January 2017 Troubleshooting ...
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