Carel PJ32 Serie Manual De Instalación página 10

6. PARAMETERS - MODIFICATION
The instruments in the PJ32 series are managed by a microprocessor which allows the operation of the control to be adjusted to
effective needs. For this purpose, there are special operating parameters. These parameters have been grouped into two families:
• frequent parameters (hereafter indicated as type F);
• configuration parameters (type C), whose selection is protected by a code, called the password, to prevent unwanted tampering.
Each parameter can be defined as a frequent parameter or a configuration parameter by setting it using the serial connection or
the programming key.
The parameters can be modified from the front keypad and, where the necessary options are featured, using the serial
connection. To modify the parameters from the front keypad, proceed as follows.
6.1 Modifying the set point and differential
The instrument has a set point of 4ºC. This can be modified as follows:
1. press the button for a second to display the value of the set point;
2. after an instant, the previously set value starts to flash;
3. increase or decrease the value of the set point using the
4. press again to confirm the new value.
Setting the differential (control hysteresis - parameter rd).
The instrument is pre-programmed with a differential of 2 degrees. This can be modified as follows:
1. press the button for more than 5 seconds (*);
2. the display shows the code of the first modifiable parameter (PS);
3. press the button or the
4. press to display the associated value;
5. increase or decrease the value using the
6. press again to temporarily confirm the new value and move to the display of the parameter code;
7. press the button for 5 seconds to save the new value and exit the modify parameters procedure.
(*) during an alarm the
modify parameters procedure.
Warning: the parameter rd is normally visible at level F, if not, enter the password (to access the type C parameters).
6.2 Accessing the parameters
To access the type F parameters
1. press the button for more than 5 seconds (see (*) on previous page);
2. the display shows the code of the first modifiable parameter (PS);
3. use the and/or
To access the type C parameters
1. access the type F parameters, select parameter PS (password) using the
2. the display shows 00;
3. press the or button until 22 is displayed (password);
4. confirm using ;
5. the display shows the code of the first modifiable parameter (all F and C parameters are visible).
Cod. +030221881 rel. 1.3 - 03/05/2006
button until the code rd is displayed;
and/or
button must be pressed briefly to silence the signal (relay or buzzer) before being able to access the
buttons to scroll all the type F parameters.
and/or buttons until the required value is displayed;
buttons until the required value is displayed;
button;
plug-in
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