Siemens SITRANS SL, Руководство по эксплуатации, Страница: 116 / 212

Operation
7.3 Menu system
SITRANS SL
118
Operating Instructions, 12/2010, A5E01132948-04
Digital outputs
The digital outputs are realized as relays providing the following functions:
●
Assign alarm(s) from the alarm list to a digital output. Possible settings are:
–
M(aintenance) fault
– M demanded
– M required
– P(rocess) V(alue) fault
– PV warning
– PV tolerance
– No data exchange
– Local override
– Configuration warning
– Data exchange
– Device unlocked
To assign or cancel an alarm use the (right arrow) button.
●
Select state of relay in normal operation
–
"Normally energized" - relay contact for the alarm signal is closed.
– "Normally de-energized" - relay contact for the alarm signal is open.
"Normal" refers to the normal state of operation of the analyzer. The system is powered and
running without any problems, no error signal is generated and displayed.
"Normally Energized" refers to the state of the relay in normal operation. The relay contact
for the alarm signal is closed in normal state of operation when checked.