Siemens SITRANS F Operating Instructions Manual page 39

Outputs
This block comprises all parameters that define the behavior of the current output and the
binary outputs.
● Power output – power in case of alarm
● NAMUR switch – function
N1
MAX
Pulse output
Pulse output
Pulse output
Note
Parameters MIN and MAX
The parameters MIN and MAX are the limits of relative flow defined in the parameter block
Input.
● NAMUR switch – activated state
Note
Activated state
The set active status also applies to N1 if this is configured as a pulse output.
Totalizer (pulse output)
Both the totalizer and the pulse output measures volume and measuring units.
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01
An alarm status of the MEM (see description of self-test) can optionally be displayed at
the current output. The possible current settings are:
– >20.5 mA (typically 21.6 mA)
– <3.8 mA (typically 3.6 mA)
– unused
The binary outputs N1 and N2 (NAMUR switch) are constructed as optocouplers with
downstream transistor and comply with the industrial standard EN 60947-6-6:2000.
The functions of the outputs are controlled by the microprocessor and may comprise the
following functions:
The activated status of the NAMUR switches N1 and N2 is set via this parameter.
The options are:
– closed
– open
6.4 Configuring with HART
N2
MIN
MIN
MAX
MIN/MAX
Commissioning
39