Ascon Tecnologic - K Series - ENGINEERING MANUAL - Vr. 9.0
PAG. 23
7. OPERATIVE MODES
As we said at paragraph 5.1, when the instrument is
powered, starts immediately to work accordingly to the
stored parameters value.
In other words, the instrument has only one status, the “run
time” status.
During “run time” we can force the instrument to operate in
three different modes: Automatic mode, Manual mode or
Stand by mode.
–
In Automatic mode the instrument drives automatically the
control output according to the parameter value set and
the setpoint/measured value.
–
In Manual mode the instrument shows the measured value
and allows you to set manually the output power.
No Automatic action will be made.
–
In stand by mode the instrument operates as an indicator. It
shows the measured value and forces the outputs to zero.
As we have seen, it is always possible to modify the value
assigned to a parameter independently from the operative
mode selected.
7.1 how to enter the “Operator level”
The instrument is showing the “Standard display”.
1.
Press the
button;
2.
The instrument shows alternately the acronym of the first
parameter promoted to this level and its value;
3.
With the
and
buttons assign to this parameter the
desired value;
4.
Press the
button in order to store the new value and
go to the next parameter;
5.
When you want to reurn to the “Standard display” push
the
button for more than 5 seconds.
Note:
The parameter modification of the Operator level
is subject to a time out. If no button is pressed for
more than 10 seconds, the instrument returns to
the “Standard display” and the new value of the last
selected parameter will be lost.
7.2 how to enter the “Limited Access Level”
The instrument is showing the “Standard display”.
1.
Press the
button for more than 5 seconds;
2.
The display alternately shows
PASS
and
0
;
3.
With the
and
buttons set the value assigned to
[114] PAS2 (Level 2 password);
Notes: 1.
The factory default password for configuration
parameters is equal to 20.
2.
All parameter modification are protected by a
time out. If no button is pressed for more than 10
second the instrument returns automatically to
the Standard display, the new value of the last
selected parameter is lost and the parameter
modification procedure is closed.
When you desire to remove the time out (e.g. for
the first configuration of an instrument) you can use
a password equal to 1000 plus the programmed
password (e.g. 1000 + 20 [default] = 1020).
It is always possible to manually End the param-
eter configuration procedure (see below).
3.
During parameter modification the instrument
continues to perform the control.
In certain conditions (e.g. when a parameter
change can produces a heavy bump to the
process) it is advisable to temporarily stop the
controller from controlling during the program-
ming procedure (its control output will be Off). A
password equal to 2000 + the programmed value
(e.g. 2000 + 20 = 2020) will switch the control out
off during configuration. The control will restart
automatically when the parameter modification
procedure will be manually ended.
4.
Press
button;
5.
The instrument will show alternately the acronym of the
first parameter promoted to this level and its value;
6.
By
and
buttons assign to this parameter the
desired value;
7.
Press the
button in order to memorize the new value
and go to the next parameter;
8.
When you want to return to the “Standard display” push
the
button for more than 5 seconds.
7.3 how to see but not modify the
“Limited Access Parameters”
Sometime it is necessary to give to the operator the
possibility to see the value assigned to the parameter
promoted in the Limited Access level but it is important that
all changes are made by autorized personnel only.
In this cases, proceed as follows:
1.
Press the
button for more than 5 seconds;
2.
The display alternately shows
PASS
and
0
;
3.
By
and
buttons set the value
-181
;
4.
Press
button;
5.
The instrument shows alternately the acronym of the first
parameter promoted to the level 2 and its value.
6.
Using
button is possible to see the value assigned to
all parameters present in level 2 but it will not be possible
to modify it;
7.
It is possible to return to the “Standard display” pushing
the
button for more than 3 seconds or pushing no
buttons for more than 10 seconds.
7.4 Automatic Mode
7.4.1 Keyboard functions when the instrument
is in Auto mode
Starts the action programmed by [116] uSrb (
but-
ton function during RUN TIME) parameter.
Allows to enter the parameter modification procedures.
Starts the “Direct set point modification” function (see
below).
Displays the “Additional information” (see below).
