Ascon Tecnologic - Z31A - Operating Instructions - Pag. 2
2
: In programming mode is used to decrease the
setting value or to select the parameter that is to be
changed.
3 : In programming mode it is used to increase the
setting value or to select the parameter that is to be
changed. In programming mode can be used togeth-
er with key to change parameters level. When the
keyboard is locked can be used together with the
key (pressed for 5 s) to unlock the keyboard.
4
: Pressed and released causes the display of the
instrument variables (measured temperatures etc.). In
programming mode can be used to return in normal
mode. If programmed with parameter t.uf it allows to
switch the controller between normal mode and stand-
by (pressed for 1 s while in normal mode).
5 LED SET: In normal mode it indicates that a key is
pressed. In programming mode indicates the program-
ming level of the parameters.
6 LED : Indicates the control output status (compres-
sor or temperature control device) when the instrument
is programmed for cooling operation: Active (on), not
active (off) or inhibited (flashing).
7 LED : Indicates the control output status (compres-
sor or temperature control device) when the instrument
is programmed for heating operation: Active (on), not
active (off) or inhibited (flashing).
8 LED : Indicates the alarm status: active (on), not ac-
tive (off) or acknowledged (flashing).
9 LED Stand-By: Indicate the Stand-by status. When
the instrument is in Stand-by is the only LED lit.
2 PROGRAMMING
2.1 Fast Set Point Programming
Press the key then release it, the display shows SP
alternated to the set value; to change it press the key to
increase or decrease its value. These keys increase or
decrease the value one digit at a time, but if the button is
pressed for more than one second the value increase or de-
creases rapidly, and after 2 s pressed, the speed increases
even more to quickly reach the desired valued.
When the desired value is set, press the key or press NO
KEYS for about 10 seconds to exit from fast Set Point pro-
gramming mode and returns to the normal function mode.
2.2 Standard Mode Parameters Programming
To access the instrument function parameters when pass-
word protection is disabled, press the key and keep it
pressed for about 5 seconds, after which the display shows
the code that identifies the first programmable parameter.
The desired parameter can be selected using the /
keys, then, pressing the key again, the display shows the
parameter code alternated to its value that can be changed
with the and keys.
Once the desired value has been set, press the key again:
the new value is stored and the display shows only the code
of the changed parameter. Pressing the
and keys,
it is possible to select another parameter and change it as
described.
To exit the programming mode, press no keys for about 30 s,
or keep the
key pressed for 2 s until the controller returns
in normal mode.
2 s
5 s
Previous
param.
Next
param.
-25.5
s.ls
Increase
value
Decrease
value
-30.0
Parameter
(Program mode)
Set
Parameter
2.3 Parameter Protection Using a Password
The instrument has a parameter protection function with
password that can be customized using the t.PP parameter.
To protect the parameters, set the desired Password Number
at parameter t.PP and exit the parameters programming session.
When the protection is active, keep the
key pressed for
about 5 s to access the parameters, the display shows r.p.
Press again the
key, the display changes to 0, now, using
the / keys, insert the programmed password number
and press the key
again.
If the password is correct the instrument displays the code of
the first parameter and it will be possible to program the instru-
ment in the same way described in the previous paragraph.
The password protection can be disabled by setting t.PP = oF.
2 s
5 s
Increase
value
Decrease
value
-25.5
r.p.
0.
s.ls
Password
request
Parameter
(Program mode)
Password
correct
Insert password
Note: If the Password gets lost, just switch OFF and ON the
instrument power supply, push
key during the initial
display test and keep it pressed for 5 seconds. In this
way it is possible to have access to ALL the param-
eters, verify and modify the parameter t.PP.
2.4 Customized Mode Parameters Programming
(parameters programming level)
The password protection hides all the configuration parameters
to avoid unwanted changes being made to the programming of
the controller. To make a parameter accessible without having
to enter the password when t.PP password protection is active,
use the procedure that follows:
– Enter the Program mode using the t.PP Password and
select the parameter that must always be accessible (not
password protected).
– Once the parameter has been selected, a blinking SET LED
means that the parameter can be programmed only entering
the password (is protected), if the SET LED is steady ON the
parameter is programmable without password (not protected).
– To change the parameter visibility, press the key and keep-
ing it pressed press also the key. The SET LED changes
its state indicating the new access level of the parameter
(on = not protected; blinking = protected by password).
In case some parameters are not protected, accessing the
the programming mode the display first shows those param-
eters that are not protected, then the r.p parameter (through
which will be possible to access the “protected” parameters).
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