Siemens ULTRAMAT 23 Series - Page 141

Function Relay de-energized Relay energized Signaling
CAL/MEAS Measuring; warm-up
phase (5 min); purging
function of the H
2
S sensor;
protection function of the
H
2
S sensor
AUTOCAL; all calibrations AUTOCAL; all calibrations
Remote operation
Function control Function control is present During warm-up phase (approx.
30 min, longer with installed UV
module), AUTOCAL, uncoded
External solenoid valves
Zero gas Zero gas 󹪞ows;
AUTOCAL gas 󹪞ows (not
during AUTOCAL sample
gas pre-purging phase);
purging function of H
2
S
sensor; protection func‐
tion of H
2
sensor
Ext. solenoid valve open
Calibration gas (sample
gas inlet)
Calibration gas/scan gas 󹪞ows
(valid for IR components and
all sensors)
Ext. solenoid valve open
Sync. Synchronization signal is out‐
put
AUTOCAL only "Zero gas 󹪞ow" and
adjustment (not during sample gas
pre-purging phase);
calibration gas for the AUTOCAL
󹪞ows (not during the sample gas pre-
purging phase)
The pin assignments of the relays in the de-energized state are described in section Pin
assignments (Page 53).
The functions which can be assigned to the relays have the following meanings:
Relays SO2 limits
Limit 1: Relay 1
Limit 2: Relay 2
84121
Limits
Upper and lower limits can be de󹪝ned as events for energizing
relays. Select the desired relay(s) in the second and third lines of
this menu.
This function is speci󹪝c to the component.
NO MR relay 3
CO MR relay -
SO2 MR relay 4
O2 MR relay -
84122
Measuring range
A relay for measuring range switchover can be assigned to each
measured component. This guarantees reliable assignment of
the analog output signal to the currently active range, especially
with autoranging (see section Parameter: Measuring ranges
(Page 127)).
Functions
8.4 Con󹪝guration
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 141