Totalizers - Siemens SITRANS FC430 Operating Instructions Manual

Functions

8.7 Totalizers

The following input options are available:
● Start dosing
● Hold / continue dosing
– When this function is activated, it will pause the dosing. When it is deactivated, the
● Stop dosing
– Sets the digital output to "Off" and resets the dosing counter
● Zero adjust
– Starts the automatic zero point adjustment. This function employs the existing
● Reset totalizer
– Resets one of the internal totalizers 1, 2 or 3 (depending on configuration)
● Resets all totalizers simultaneously
● Freeze signal
– Freezes all currently measured values in the display and outputs
● Force signal
– Forces all outputs to adopt the value selected in the menu. If the value 100% is
Changing polarity
Changing the polarity triggers the signal input to execute the set functionality.
8.7 Totalizers
Totalizer functions
The device has three independent totalizers that can be used to total the massflow, volumeflow,
corrected volumeflow, fraction A (volumeflow or massflow) or fraction B (volumeflow or massflow).
The totalizers can be configured to count balance (net flow), positive flow or negative flow.
In case of failure in the system, the totalizer fail safe mode can be set to:
- Hold (default): the totalizer holds the last value before the failure occurred
- Run: the totalizer continues counting the actual measured value
- Memory: the totalizer continues counting based on the last input value (for example
massflow) before the failure occurred.
The totalizers can be operated via the Local User Interface or HART (for example SIMATIC
PDM). The totalizers can be reset or preset.
148
dosing will continue
configurations and presumes that the process conditions are prepared for the zero
point adjustment routine
selected, the current output will show 20 mA and the frequency output will show
10.000 kHz when the external output is activated
WARNING
Operating Instructions, 05/2015, A5E03361511-AF
FC430 with HART