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3 By pressing and releasing the key, it is displayed alternatively the parameter value or its label.
ACCESS PROCEDURE TO "Pr2"
To enter the parameters of the Pr2 level it necessary to write a password.
1 Enter the programming by pressing the PRG key for some seconds;
2 When rEL label is displayed, press again the PRG key for some seconds;
3 The "Pr2" label appears followed by “PAS”;
4 Press and use the keys and in order to write the correct number;
5 Confirm this number by pushing key;
6 If the password is correct, the "Pr2" is entered by pressing key, otherwise the password input process restarts from the
beginning.
If no key is pressed within 15 seconds, the instrument displays the ambient probe temperature.
N.B.: Each parameter in "Pr2" can be removed or put into the user level by pressing the PRG key for some seconds when
you are in "Pr2". If a parameter is present only in "Pr2", its label blinks.
PASSWORD: The password to enter the parameters present in Pr2 is defined by the parameter PAS.
Anyway, it exists a safety password: 981.
4. LIST OF THE PARAMETERS
REGULATION
HyS Control differential ON/OFF: (-12,0÷+12,0) Intervention differential for set point, always positive. The compressor cuts in
when the temperature reaches the Set Point + HyS value. It cuts OUT when the temperature reaches again the set point value.
bSE Minimum set point: (-60,0÷TsE) Sets the minimum acceptable value for the cold room temperature set point.
tSE Maximum set point: (bSE÷300,0) Sets the maximum acceptable value for the cold room temperature set point.
Lrr Control by probe or digital input: (D.I.) Prb= Control by probe; di= Control by digital input.
dbE Neutral zone activated: n = standard functioning; y = neutral zone function activated.
otd Output Delay at power-on: (0÷99 min) Shortest instrument start delay time in case of restart after a power failure.
As concerns the Light Relay, this delay is never programmed.
Sbd Standby function: (0÷999 min) Control activation delay after ON/off key pressing.
PPO Manual Activation delay by off/on key: n= at the end of Sbd the control starts; y= at the end of Sbd the otd delay is charged.
cPt Compressor protection type: It indicates which kind type of protection is activated on compressor relay implementations. In
any case, it is present a minimum 4 second relay on compressor relay switching.
np= no protection; don= delay at starting; doF= delay after switching off; dbi= delay between startings.
cPr Compressor protection delay: (0÷15 min) Delay time or interval concerning the selection effected at the "cPt" parameter.
Even if a value equal to zero is programmed, a 4 second protection interval between the trippings remains always enabled. If
the "cPt" parameter is equal to "nP", this parameter is ignored.
con Compressor running time during Duty_cycle: (0÷99 min). This parameter is used in case of control probe failure and the
compressor control mode is foreseen in Duty Cycle. It indicates the time interval during which the compressor is on.
coF Compressor OFF time during Duty_cycle: (0÷99 min). This parameter is used in case of control probe failure.
The compressor control mode is foreseen in Duty Cycle. It is the time interval during which the compressor is off.
SHt Set point controlled by themostat probes P2 and P3 in neutral zone: (-60,0 ÷ +300,0 °C) the temperatures of
reference are the ones read by probes no. 2 and no. 3. The relay reset differential is provided by Adf parameter. If the second
evaporator is activated (dEd=y), but the P3P = n parameters or P3F = Ao or probe no. 3 are damaged, the second evaporator
is cyclically excited with the times given by Hon = on time and Hof = off time parameters.
Hon DEF and/or DEF2 ON time because of damaged probe (P2, P3): (0 ÷ +99 min) Time during which DEF and or DEF2
relays are activate in case of damaged probe.
HoF DEF and/or DEF2 OFF time because of damaged probe (P2, P3): (0 ÷ +99 min) Time during which DEF and or DEF2
relays are disconnected in case of damaged probe.
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