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4.
Use
I
I
or
J
J
to input the security code in the flashing digit; confirm the figure by pressing “
SET”.
The security code is “321“.
5.
If the security code is correct the access to “Pr2” is enabled by pressing “
SET” on the last digit.
Another possibility is the following: after switching ON the instrument the user can push Set and DOWN
keys within 30 seconds.
NOTE: each parameter in “Pr2” can be removed or put into “Pr1” (user level) by pressing “SET” +
J
J
.
When a parameter is present in “Pr1” LED
is on.
4.9
HOW TO CHANGE THE PARAMETER VALUE
1.
Enter the Programming mode.
2.
Select the required parameter with
I
I
or
J
J
.
3.
Press the “
SET” key to display its value (
and
LED starts blinking).
4.
Use
I
I
or
J
J
to change its value.
5.
Press “
SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 15s without pressing a key.
NOTE: the new programming is stored even when the procedure is exited by waiting the time-out.
4.10
HOW TO LOCK THE KEYBOARD
1.
Keep the
I
I
and
J
J
keys pressed together for more than 3 s the
I
I
and
J
J
keys.
2.
The “POF” message will be displayed and the keyboard is locked. At this point it is
only possible the viewing of the set point or the MAX o Min temperature stored and
to switch ON and OFF the light, the auxiliary output and the instrument.
TO UNLOCK THE KEYBOARD
Keep the
I
I
and
J
J
keys pressed together for more than 3s.
4.11
ON/OFF FUNCTION
By pushing the
ON/OFF key, the instrument shows “OFF” for 5 sec. and the ON/OFF LED
is switched ON.
During the OFF status, all the relays are switched OFF and the regulations are stopped;
N.B. During the OFF status the Light button is active.
5.
PARAMETER LIST
REGULATION
Hy Differential: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point, always positive.
Compressor Cut IN is Set Point Plus Differential (Hy). Compressor Cut OUT is when the
temperature reaches the set point.
LS Minimum set point limit: (-50,0°C
÷÷
SET; -58°F÷SET) Sets the minimum acceptable value for the
set point.
US Maximum set point limit: (SET
÷÷
110°C; SET÷230°F) Set the maximum acceptable value for set
point.
OdS Outputs activation delay at start up: (0÷255 min) This function is enabled at the initial start up of
the instrument and inhibits any output activation for the period of time set in the parameter. (Light
can work)
AC Anti-short cycle delay: (0÷30 min) interval between the compressor stop and the following restart.
CCt Thermostat override: (0min ÷23h 50min) allows to set the length of the continuous cycle. Can be
used, for instance, when the room is filled with new products.
Con Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is active
in case of faulty thermostat probe. With COn=0 compressor is always OFF.
COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is off in
case of faulty thermostat probe. With COF=0 compressor is always active.
CH Type of action: CL = cooling; Ht = heating.
DISPLAY
CF Temperature measurement unit: °C = Celsius; °F = Fahrenheit. When the measurement unit is
changed the SET point and the values of some parameters have to be modified.
rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display.
dE = 0,1°C; in = 1 °C
DEFROST
EdF Defrost mode:
in = interval mode. The defrost starts when the time “Idf” is expired.
Sd = Smartfrost mode. The time IdF (interval between defrosts) is increased only when the
compressor is running (even non consecutively) and only if the evaporator temperature is less than
the value in "
SdF” (set point for SMARTFROST).
IdF Interval between defrosts: (1÷120h) Determines the time interval between the beginning of two
defrost cycles.
MdF (Maximum) duration of defrost: (0÷255 min) When P2P = n, no evaporator probe, it sets the
defrost duration, when
P2P = y, defrost end based on temperature, it sets the maximum length for
defrost.
dFd Display during defrost:
rt = real temperature; it = temperature reading at the defrost start;
Set = set point; dEF = “dEF” label;
dEG = “dEG” label;
dAd Defrost display time out: (0
÷
255 min) Sets the maximum time between the end of defrost and the
restarting of the real room temperature display.
dPO First defrost after start-up:
y = Immediately; n = after the IdF time
dAF Defrost delay after fast freezing: (0min÷23h 50min) after a Fast Freezing cycle, the first defrost
will be delayed for this time.
FANS
FnC Fan operating mode:
C-n = running with the compressor, OFF during the defrost;
C-y = running with the compressor, ON during the defrost;
O-n = continuous mode, OFF during the defrost;
O-y = continuous mode, ON during the defrost;
Fnd Fan delay after defrost: (0÷255 min) The time interval between the defrost end and evaporator
fans start.
FSt Fan stop temperature: (-50÷110°C; -58÷230°F) setting of temperature, detected by evaporator
probe, above which the fan is always OFF.
ALARMS
ALC Temperature alarm configuration
rE = High and Low alarms related to Set Point
Ab = High and low alarms related to the absolute temperature.
ALU High temperature alarm setting:
ALC= rE, 0
÷÷
50°C or 90°F
ALC= Ab, ALL
÷
110°C or 230°F
when this temperature is reached and after the ALd delay time the HA alarm is enabled.
ALL Low temperature alarm setting:
ALC = rE , 0
÷÷
50 °C or 90°F
ALC = Ab , - 50°C or -58°F
÷÷
ALU
when this temperature is reached and after the ALd delay time, the LA alarm is enabled,.
AFH Temperature alarm differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for temperature
alarm set point, always positive.
ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm condition
and the corresponding alarm signalling.
dAO Delay of temperature alarm at start-up: (0min÷23h 50min) time interval between the detection of
the temperature alarm condition after the instrument power on and the alarm signalling.
EdA Alarm delay at the end of defrost: (0
÷
255 min) Time interval between the detection of the
temperature alarm condition at the end of defrost and the alarm signalling.
dot Delay of temperature alarm after closing the door : (0
÷
255 min) Time delay to signal the
temperature alarm condition after closing the door.
doA Open door alarm delay:(0÷255 min) delay between the detection of the open door condition and
its alarm signalling: the flashing message “
dA” is displayed.
tbA Buzzer and alarm relay silencing: by pushing one of the keypad buttons.
n= Only the Buzzer is silenced;
y= Buzzer and relay are silenced.
nPS Pressure switch number: (0
÷
15) Number of activation of the pressure switch, during the “
did”
interval, before signalling the alarm event (I2F= PAL).
If the nPS activations in the did time are reached, switch off and on the instrument to restart
normal regulation.
PROBE INPUTS
Ot Thermostat probe calibration: (-12.0
÷÷
12.0°C/ -21
÷÷
21°F) allows to adjust possible offset of the
thermostat probe.
HES Temperature increase during the Energy Saving cycle : (-30,0°C
÷
30,0°C / -22÷86°F) sets the
increasing value of the set point during the Energy Saving cycle.
DIGITAL INPUTS
odc Compressor status when open door:
no, Fan = normal; CPr, F_C = Compressor OFF.
I2P Configurable digital input polarity:
CL : the digital input is activated by closing the contact;
OP : the digital input is activated by opening the contact
I2F Digital input operating mode: configure the digital input function:
EAL = generic alarm; bAL = serious alarm mode; PAL = Pressure switch; dFr = Start defrost;
AUS = Not used; Es = Energy Saving; onF = remote On/OFF; dor = door switch
did Time interval/delay for digital input alarm:(0
÷
255 min.) Time interval to calculate the number of
the pressure switch activation when I2F=PAL. If I2F=EAL or bAL (external alarms), “did” parameter
defines the time delay between the detection and the successive signalling of the alarm.
OTHER
PbC Type of probe: it allows to set the kind of probe used by the instrument:
PbC = PBC probe, ntC = NTC probe.
rEL Release software: (read only) Software version of the microprocessor.
Ptb Parameter table: (read only) it shows the original code of the
KML
NPORQ
parameter map.
Prd Probes display: (read only) display the temperature.
Pr2 Access to the protected parameter list (read only).
6.
DIGITAL INPUTS
The controllers have 1 free contact digital input. It is programmable in seven different configurations by
the “
I2F” parameter.
6.1
DOOR SWITCH INPUT (I2F = dor)
It signals the door status and the corresponding relay output status through the “
odc” parameter:
no = normal (any change);
Fan = Fan OFF;
CPr = Compressor OFF;
F_C = Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter “
dOA”, the alarm output is enabled
and the display shows the message “
dA”. The alarm stops as soon as the external digital input is
disabled again. During this time and then for the delay “
dot” after closing the door, the high and low
temperature alarms are disabled.
6.2
GENERIC ALARM (I2F = EAL)
As soon as the digital input is activated the unit will wait for “
did” time delay before signalling the “EAL”
alarm message. The outputs status don’t change. The alarm stops just after the digital input is de-
activated.
6.3
SERIOUS ALARM MODE (I2F = BAL)
When the digital input is activated, the unit will wait for “
did” delay before signalling the “BAL” alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-
activated.
