ascon Z31 Operating Instructions Manual Download Page 2

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In programming mode is used to enter in parameters edit mode
and confirm the values.
In programming mode it can be used together with the UP key to
change the programming level of the parameters.
When the keyboard is locked it can be used together with the UP
(hold pressed for 5 sec.) key to unlock the keyboard.

2 - Key DOWN

: In programming mode is used for decreasing the

values to be set and for selecting the parameters.

3 - Key UP/DEFROST

: In normal mode can be used to start/stop

manual defrosting (hold pressed for 5 sec.).
In programming mode is used for increasing the values to be set
and for selecting the parameters.
In programming mode can be used togetherwith key P to change
parameters level.
Pressed together with the key P for 5 sec. allow the keyboard
unlock

4 - Key U :

Used (press and release) for visualising the instrument

variables (measured temperatures etc.) .
In programming mode can be used to come back in normal mode
(hold for 2 sec.).
It can also be programmed via the parameter “t.UF”
In normal mode and if par. “t.UF”

4 it can be used to turning on

and off (stand-by) the device (hold pressed for 1 sec.)

5 - Led SET

: In normal mode it serves to indicate when a key is

pressed.
In programming mode indicates the programming level of the
parameters.

6 - Led OUT - COOL

: Indicates the output status (compressor or

temperature control device) when the istrument is programmed for
cooling operation; on (on), off (off) or inhibited (flashing).

7 - Led OUT - HEAT

: Indicates the output status (compressor or

temperature control device) when the istrument is programmed for
heating operation; on (on), off (off) or inhibited (flashing).

8 - Led DEFROST :

Indicates defrosting in progress (on)

9 - Led ALARM

: Indicates the alarm status (on), off (off) and

silenced (flashing)

10 - Led Stand-By:

Indicate the Stand-by status.

2 - PROGRAMMING

.1 -

FAST PROGRAMMING OF SET POINT

Press the key P then release it and the display will show

“SP

”

alternating with the set value.
To change it press the UP key to increase the value or DOWN to
decrease it.
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 decreases rapidly, and after two seconds pressed, the
speed increases even more to all the desired valued to be reached
rapidly.
When the desired value is set press the key P to exit from Set
Point programming mode.
Exiting the Set mode is achieved by pressing the P key or
automatically if no key is pressed for 10 seconds. After that time
the display returns to the normal function mode.

2.2 - STANDARD MODE PARAMETERS PROGRAMMING

To access the instrument’s function parameters when password
protection is disable, press the key

and keep it pressed for about

5 seconds, after which the display will visualised the code that
identifies the first parameter.
Using the UP and DOWN keys, the desired parameter can be
selected and pressing the P key, the display will alternately show
the parameter code and its setting that can be changed with the UP
and DOWN keys.
Once the desired value has been set, press the key P again: the
new value will be memorised and the display will show only the
code of the selected parameter.
Pressing the UP and DOWN keys, it is possible to select another
parameter and change it as described.

To exit the programming mode, do not press any key for about 30
seconds, or keep the U key pressed for 2 sec. until it exits the
programming mode.

2 s e c .

H o ld f o r

5 s e c .

2.3 - PARAMETER PROTECTION USING THE PASSWORD

The instrument has a parameter protection function using a
password that can be personalised, through the

“t.PP”

parameter.

If one wishes to have this protection, set the password number
desired in the parameter “t.PP”.
When the protection is activate, press the P key to access the
parameters and keep it press for about 5 seconds, after which the
display will show

“r.P”

At this point press P, the display show “0”, using the UP and
DOWN keys, set the password number programmed and press
the key P.
If the password is correct, the display will visualise the code that
identifies the first parameter and it will be possible to program the
instrument in the same ways described in the previous section.
Protection using a password can be disabled by setting the
parameter “t.PP” = oF.

2 sec.

Hold for

5 sec.

Hold for

Note:

If the Password gets lost, just swith off and on the instrument

supply, push P key during the initial test and keeping the key
pressed for 5 seconds.
In this way it’s possible to have access to all the parameters, verify
and modify the par. “t.PP”.

2.4 - CUSTOMIZED MODE PARAMETER PROGRAMMING
(PARAMETERS PROGRAMMING LEVEL)

The password protection hides all the configuration parameters
behind a factory set password 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 activate follows this
procedure.
Enter the programming using the Password “t.PP” and select the
parameter which is desired to be accessible with no password
protection.
Once the parameter has been selected, if the SET led is blinking,
this means that the parameter is programmable by entering the
password (it’s then “protected”) if it’s instead on, this means the
parameter is programmable without password (not protected).
If you want to change the accessibility of the parameter push P
key, keep it pressed and press together also the key UP.
The led SET will change its state indicating the new access level of
the parameter (on = not protected; blinking = protected by
password).