Input
functions
7
SYCON
3000 C
Input functions
From the 3 available input functions, maximally 2 can be programmed for the two inputs of the analyser in
the programme steps 3.1 and 3.2. Each function can only be implemented once.
In programme step 3.3, it is determined whether the inputs are to be active with open or closed contact.
Start analysis
An analysis of the water can only be started from
this input if the instrument is in the stand-by posi-
tion and indicator is available.
A currently running analysis is not interrupted. The
input is deactivated during this time.
In programme step 4.1, a delay time period can
be entered.
The delay time of the input is only reset at the start
of an analysis. Several successive impulses are
summated chronologically between the analyses.
Example: Connection of a flow monitor
Programme step 4.1 = 10 seconds
An analysis is initiated if the contact of the flow
monitor is active for longer than 10 seconds.
An analysis is also initiated if the contact was suc-
cessively active 5 times for 2 seconds because
water was only drawn for a short period.
Stop analysis
If the input is activated, no analyses are initiated
by a time interval, by a volume interval or over
the input "Start analysis". Only the manual trigger-
ing over the "START" button is possible. A running
analysis is aborted by a flushing operation.
In programme step 4.2, a delay time can be en-
tered.
Applications:
No analyses should be conducted in the case of
water shortage or pressure deficiency.
Analyses should only be performed if a storage
reservoir is filled or if an osmosis system is in op-
eration.
Analyses should only be conducted at certain
times (external timer).
Reset relay
With this input it is possible to clear the relays of
the output functions "Permanent signal 1", "Per-
manent signal 2", "Signal relay" and the built-in
signal tone generator from a switch station.
In programme step 3.3, a delay time can be en-
tered.
Attention!
The display of the message in the LCD display is
not deleted. It disappears automatically as soon
as the cause of the message is removed or a new
analysis has been started.
If the display "Analysis stop" appears, an analysis
must be started manually.
With the corresponding programming, the start of
a new analysis can also occur through an external
switch (see Start analysis).
Water meter
An analysis can also be started after the passage
of a certain volume of water. To this end, the Wa-
ter volume 1 and the Water volume 2 are entered
in the programme steps 4.4 and 4.5. The Water
volume 1 is taken into consideration if, after an
analysis, the limit value has not been exceeded
and the Water volume 2 if the limit value has
been exceeded. This allows, after an overrun of
the limit value, the following analyses to be exe-
cuted in shorter intervals.
In programme step 4.6, the pulse interval of the
water meter is entered.
The resetting of the programmed flow rate occurs
at each analysis start and is corrected according
to the Water volume 2 in the event of the limit
value being exceeded.
Note:
In several quantity-dependent controls for soften-
ing plants, a floating (potential-free) relay contact
is available that simultaneously connects to the
contact of the water meter. This relay contact can
also be implemented.
A maximum of 3 pulses per second are regis-
tered.
