Endress+Hauser Proline Prosonic Flow 93 Operating Instructions Manual page 83

Proline Prosonic Flow 93 FOUNDATION Fieldbus
Endress+Hauser
19. In the L_TYPE parameter, select the mode of linearization for the input variable (Direct,
Indirect, Indirect Sq Root)  See the "Description of Device Functions" manual.
"
Caution!
Note that with the type of linearization "Direct" the configuration of the parameter group
OUT_SCALE must agree with the configuration of the parameter group XD_SCALE.
Otherwise the block operating mode cannot be set to AUTO. Such incorrect configuration is
indicated via the parameter BLOCK_ERROR with the "Block Configuration Error" message.
Example:
– The measurement range of the sensor is 0 to 30 m
– The output range to the process control system should be 0 to 30 m
The following settings should be made:
– Analog Input Function Block / parameter CHANNEL (selection of input value),
selection: 1  Volume flow
– Parameter L_TYPE  Direct
– Parameter group XD_SCALE
XD_SCALE 0% = 0
XD_SCALE 100% = 30
XD_SCALE UNIT = m
– Parameter group OUT_SCALE
OUT_SCALE 0% = 0
OUT_SCALE 100% = 30
OUT_SCALE UNIT = m
20. Use the following parameters to define the limit values for alarm and warning messages:
– HI_HI_LIM  Limit value for the upper alarm
– HI_LIM  Limit value for the upper warning
– LO_LIM  Limit value for the lower warning
– LO_LO_LIM  Limit value for the lower alarm
The limit values entered must be within the value range specified in the parameter group
OUT_SCALE.
21. In addition to the actual limit values you must also specify the action taken if a limit value is
exceeded using so-called "alarm priorities" (parameters HI_HI_PRI, HI_PRI, LO_PR,
LO_LO_PRI)  See the "Description of Device Functions" manual. Reporting to the fieldbus
host system only takes place if the alarm priority is higher than 2.
22. System configuration/connection of Function Blocks:
A concluding "overall system configuration" is essential so that the operating mode of the
Analog Input Function Block can be set to AUTO and so that the field device is integrated into
the system application. To do this, configuration software is used to connect the Function
Blocks to the desired control strategy - generally graphically - and then the sequence of the
individual process control functions is specified.
23. After specifying the active LAS, download all the data and parameters into the field device.
24. Set the operating mode in the parameter group MODE_BLK (parameter TARGET) to AUTO.
This is only possible under two conditions, however:
– The Function Blocks are correctly connected with each other.
– The Resource Block is in operating mode AUTO.
3
/h
3
/h
Commissioning
3
/h.
3
/h as well.
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