Siemens FIDAMAT 6 Operating Instructions Manual page 64

Operation
Sample gas intermediate
operation
Signaling contact
Relay outputs
5-14
AUTOCAL / check Start by binary input
AUTOCAL can be activated via a binary input provided one has been
configured with the aid of function 72.
AUTOCAL run once
In the "AUTOCAL on" state, an AUTOCAL sequence can be started at
any time by means of the "AUTOCAL run once" soft key – provided the
unit is in the measuring state. A run initiated in this way does not have any
influence on the time cycle of an AUTOCAL run – in other words, the
cycle time continues to run independently of this.
After AUTOCAL initiation, this item disappears until the process has
completed.
AUTOCAL abort
An automatic calibration run which is in progress can be stopped at any
time by means of the "AUTOCAL abort" soft key. This results in all
calibration data so far obtained being discarded and the calibration data
valid before AUTOCAL started (zero point and span) being used as
previously.
Aborting in this way has no effect on the time cycle. All valid calibration
events are retained.
AUTOCAL sequence
This subfunction allows you to group several calibration phases into one
AUTOCAL sequence.
The sequence used for automatic calibration can be defined as you see
fit. It is possible to put together a sequence consisting of as many as
twelve different phases.
In addition to inputting a zero gas and up to four test gases for each
component, you can also program in flushing with sample gas, and a
sample gas intermediate operation period as well as a signaling contact.
This signaling contact will be available provided it has already been
assigned to a relay output by function 71.
A sample gas intermediate operation period may become necessary
if the system is only permitted to leave measurement mode for a very
specific time. If the necessary flushing times then add up to a period
greater than the permitted outage time, there must be a return to
measurement mode between the individual calibration runs.
The signaling contact can, for example, be used for starting an
automatic calibration run in a second unit or for signaling the start or
end of an AUTOCAL run.
If relay outputs have been defined for sample, zero gas, test gases
and / or measurement or calibration (function 71), the corresponding
external solenoid valves will be operated via these outputs. The same
applies to the "AUTOCAL" signaling contact as well – this is closed for
about one second when the command is being executed.
FIDAMAT 6 gas analyzer
Operating manual –A5E00222135-01