Siemens 7MB2335, Operating Instructions Manual, Page: 83 / 168

Operation
5-33
Operating instructions ULTRAMAT 23 gas analyzer
C79000-B5276-C216-03
5.10 Configuration
Here you can assign relays and inputs/outputs and use special
functions and test functions. Fig. 5-9 shows the associated menu
sequence (see Section 5.7 for explanation of elements).
This menu is protected by code level 2.
5.10.1 Configuration: Inputs/Outputs/Pump
This menu provides functions in order to define relays, inputs and
outputs, the synchronization and the pump response during calibration
and in measuring mode:
5.10.1.1 Configuration: Inputs/Outputs/Pump: Analog Outputs
You can use this menu to parameterize the analog outputs. This input
always refers equally to all components.
S
Analog output ranges (start-of-scale value of analog output)
0, 2 , 4 mA or NAM can be set in the third line as the start-of-scale
value of the analog current range. The suppression of negative
measured values can be switched on or off in the fourth line. The
ON option is preset. This means that negative measured values are
output. With a setting of 2 or 4 mA as the lower limit, values below
this down to 0 mA can nevertheless be output, i.e. negative
measured values can be displayed (live zero).
If display of negative measured values is switched off, the current
output is limited to the start-of-scale value. If 2 or 4 mA is set as the
lower limit, the output is now indeed limited to 2 or 4 mA.
In the adjacent display, the start-of-scale value of the analog current
range is set to 4 mA.
The following tables represent the correlation between analog
current outputs and measuring range limits.
Analog outputs
Assign relays
Binary-/Sync-Inputs
Pump ON/OFF modes
5101
Analog output ranges
Output during FCTRL
Output during faults
51011
Analog output
Set value :
Range
4 / 20 mA
Meas.value neg: ON
51011a
Analog output
Set value :
Range
4 / 20 mA
Meas.value neg. OFF
51011a