Status Output; Alarm Status; Control Output - Siemens SITRANS F Operating Instructions Manual

● Operation Mode = Frequency Output (Channel 2 to 4)
● Process Value = Massflow
● Direction = Positive
● Frequency Value High = 12 kHz
● Frequency Value Low = 2 kHz
● Flow Value High = 15 kg/s
● Flow Value Low = 5 kg/s
Measured massflow value = 7.5 kg/s (constant)
Result:
● Frequency = 4.5 kHz
Note
The connected equipment must be capable of registering the full range of frequencies
configured.
8.6.4

Status output

8.6.4.1

Alarm status

The alarm status can be signaled on Signal Output or Relay Output. Depending on the Alarm
Mode setting, the alarms signaled on the output can be selected from alarm class or alarm
item.
● Alarm Class: Alarm will be signaled if alarm within the selected alarm class occurs.
● Alarm Item: Alarm will be signaled if selected alarm item occurs.
8.6.5

Control output

The control output can be used for controlling discrete valve dosing and analog valve dosing
as described in "Dosing" (Page 129).
SITRANS FC430 with HART
Operating Instructions, 03/2012, A5E03361511-01
Note
Alarm class can be either NAMUR or Standard (Siemens Standard) depending on Alarm
Mode settings (ID 3.2.1). Both types of alarms and their messages are described in more
detail in "Alarms and system messages" (Page 139).
Functions
8.6 Inputs and outputs
127