Endress+Hauser SWA70, Руководство по эксплуатации

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WirelessHART Adapter SWA70 8 Configuration
Hauser 69
2. The primary variable is permanently linked to the scaled loop current. The scaling and unit can
be changed in the DTM navigation tree in the Application Settings/4-20 mA menu.
The following variables can be selected as the secondary, tertiary and quaternary variable:
–
Battery Voltage: current battery voltage
– Battery Voltage With Load: battery voltage with a load
– Battery Voltage Without Load During Battery Test
– Consumed Energy: energy consumed
– Estimated Lifetime: estimated lifetime in days
– Normalized Consumed Energy: energy consumed under normalized conditions
– RSL of Best Neighbor: signal strength of the "best" neighbor
– RSL of Second Best Neighbor: signal strength of the "second-best" neighbor
– Temperature: current temperature
– Temperature Min: minimum temperature that has been measured by the WirelessHART
Adapter. The value can be reset.
– Temperature Max: maximum temperature that has been measured by the WirelessHART
Adapter. The value can be reset.
The choice of unit matches the set variable.
Device variable mapping
parameters
8.3.5 4-20 mA (application setting)
When a HART device is connected to the WirelessHART Adapter, all the parameters are read via
the digital signal. However, it is also possible to connect a 4–20 mA device to the WirelessHART
Adapter. The WirelessHART Adapter then measures the loop current and can transmit it digitally.
It is possible to adjust the 4 to 20 mA signal in the adapter DTM and perform linearization if
necessary. In addition, you can enter limit values that specify the proportional value range and the
alarm signals. If the values entered are exceeded or undershot, the WirelessHART Adapter issues a
warning or an alarm, and an event notification where warranted. See the "Event notification
(application setting)" section on Page
77.
1. Click Application Settings/4-20 mA in the DTM navigation tree to display the appropriate
parameters.
–
You can enter text in the white fields. Press Enter to save your changes.
– The gray fields are read-only.
– An explanation of the individual parameters is provided in the "4-20 mA parameters" table
below. Mandatory fields are highlighted in bold.
Parameter Meaning Example Default
Select Primary Variable Primary variable
– The primary variable is permanently linked to
the loop current.
Scaled Loop Current Scaled Loop
Current
Primary Variable Unit Unit of the primary variable mbar mA
Select Secondary Variable Secondary variable Temperature Temperature
Secondary Variable Unit Unit of the secondary variable °C °C
Select Tertiary Variable Tertiary variable RSL of Best
Neighbor RSL of Best
Neighbor
Tertiary Variable Unit Unit of the tertiary variable dB dB
Select Quaternary Variable Quaternary variable Estimated Lifetime Estimated Lifetime
Quaternary Variable Unit Unit of the quaternary variable d d