1592034020 XR77CHC EN r1.0 2019.01.31
XR77CHC
3/7
11.3
START A MANUAL DEFROST
Push the
DEFROST
button for more than 3 sec to start a manual defrost.
12
PARAMETER MENU
The device has a parameter menu available from keyboard and where it is possible to modify some specific
parameters. A couple of parameter levels are present:
-
PR1: user menu, standard parameters are placed into this menu
-
PR2: protected menu, application specific parameters are placed here. A password can be
used to protect these values from unauthorized modification.
12.1
MENU NAVIGATION
A tree-structured menu is implemented to simplify the parameter browsing and modification. Follow the button
functions (valid both in PR1 and PR2):
-
SET
: used to enter a submenu or a stored value
-
UP
and
DOWN
: used to scroll the menu labels, the parameters into a submenu and to modify a
parameter value
-
AUX/DEF
: used to go back to the upper menu level (for example, from a submenu list of
parameters to the main menu labels)
12.2
CHANGE A PARAMETER VALUE
To change a parameter value, operate as follows:
1.
Enter the Programming mode by pressing the
SET+DOWN
buttons for 3 sec
(“
°C
”
LED starts
blinking).
2.
Select the required parameter. Press the
SET
button to display its value
3.
Use
UP
or
DOWN
buttons to change its value.
4.
Press
SET
to store the new value and move to the following parameter.
To exit:
Press
SET+UP
buttons or waits for 15 sec without pressing any button.
NOTE:
The modified value will be stored even if the programming mode ends by timeout.
12.3
PROTECTED LEVEL
The Protected Level has all the parameters of the instrument. This level is password protected. The
default password is: “000”. It is strongly recommend
ed to change the standard password after ending
the installing operations.
12.3.1
ENTER THE PROTECTED LEVEL
1.
Enter the Programming mode by pressing
SET+DOWN
buttons for 3 sec (
°C
or
°F
LED starts
blinking)
2.
Released the buttons and then search for submenu
Pr2
3.
Per SET button and then insert the password value
4.
Confirm with SET. If the password is correct, the
label “Pr2” will blink for some time and then
protected parameter menu will be enabled.
12.3.2
PROTECTED MENU
1.
Select the parameter to modify
5.
Press the
SET
key to display its current value
6.
Use
UP
or
DOWN
to change its value
7.
Press
SET
to store the new value and move to the following parameter
To exit
: Press
SET+
UP
or wait for 15 sec without pressing any button.
NOTE:
1.
If there are no parameters into the User Level, after 3 sec
the “nP”
label will be displayed. Go to
submenu Pr2 and follow the previous procedure.
2.
The modified value will be stored even if the programming mode ends by timeout.
3.
Modify the par.
PSU
(when into Protected Level) to change the current password
12.3.3
MOVE PARAMETERS THROUGH LEVELS
Each parameter present into the Protected Level can be moved into the User Level by pressing both
SET+DOWN
buttons. If a parameter is into the User Level, when visualized into the Protected Level it
will have also the decimal point.
12.4
KEYBOARD MANAGEMENT
12.4.1
TEMPORARY LOCK
1.
Keep both
UP
and
DOWN
buttons pressed for more than 3 sec.
2.
The “
oFF
” label
will be displayed and the keyboard will be locked. If any button is pressed more
than 3 sec,
the “
oFF
” message will be displayed.
12.4.2
TEMPORARY UNLOCK
Keep both
UP
and
DOWN
buttons pressed together for more than 3 sec till the
“on”
message will be
displayed.
12.4.3
ADVANCED LOCK FUNCTION
It is possible to selectively lock the keyboard by using the following parameters:
1.
brd
: select the kind of lock:
a.
UnL
: all buttons unlocked
b.
SEL
: buttons
UP
,
DOWN
and
DEFROST
are locked
c.
ALL
: all keyboard is locked
2.
tLC
: delay after power-on before activating the advanced lock function
NOTE
: when advanced lock function is active, temporary lock and unlock functions are disabled.
12.5
THE ON/OFF FUNCTION
If
onF = oFF
, the instrument will be switched off by pushing the
ON/OFF
button. The
“
OFF
”
message will appear on the display. In this configuration the regulation is
disabled. To switch the instrument on, push again the
ON/OFF
button.
WARNING: any load connected to the normally closed contacts of the relays is always supplied
from the main voltage, even if the instrument is in standby mode.
13
PARAMETERS
MENU LIST
rEG
Regulation: it includes all parameters related to main temperature regulation
Prb
Probe setup: it includes all parameters related to probe configuration
diS
Display: it includes all parameters related to the user interface
dEF
Defrost: it includes all parameters to control any defrost operation
FAn
Ventilators: it includes all parameters to control the ventilators
AUS
Auxiliary: it includes all parameters for auxiliary regulators
ALr
Alarms: it includes all parameters to set up the alarm conditions
oUt
Outputs: it includes all parameters to set up the digital outputs
inP
Inputs: it includes all parameters to set up the digital inputs
ES
Energy Saving: it includes all parameters to define the energy saving mode
Cnt
Counters: to see the counters values
rtC
Real Time Clock: it includes all parameters to set up the internal clock
bLE
Bluetooth: it includes all parameters to set up the Bluetooth communication
E2
EEPROM: it includes all parameters to set up the datalogger
oth
Other: it includes all parameters to set up the serial communication and the keyboard
viS
Visualization: it includes the read only parameters (probe values and FW info)
REGULATION - rEG
SEt
Regulation Set Point:
range from LS to US
LS
Minimum Set Point:
(-100.0°C to SET; -148°F to SET) sets the minimum value for the set
point.
US
Maximum Set Point:
(SET to 200.0°C; SET to 392°F) set the maximum value for set point.
HY
Differential in normal mode:
(0.1 to 25.0°C; 1 to 45°F) differential for set point. Compressor
Cut-IN is
T > SET + HY
. Compressor Cut-OUT is
T<=SET
.
HYE
Differential in energy saving mode:
(0.1 to 25.0°C; 1 to 45°F) differential for set point.
Compressor Cut-IN is
T > SET + HES + HYE
. Compressor Cut-OUT is
T<= SET + HES
.
odS
Outputs delay activation after power on:
(0 to 255 min) this function is enabled after the
power-on of the instrument and delays output activations.
AC
Anti-short cycle delay:
(0 to 50 min) minimum interval between a compressor stop and the
following restart.
AC1
Second compressor anti-short-cycle delay:
(0 to 255 sec) delay before activating second
compressor, depending on regulation mode selected by par.
2CC
2CC
Activation mode for second compressor (valid if oAx=CP1 and oAy=CP2):
(FUL; HAF)
FUL
=second compressor activated in parallel with first one.
HAF
=second compressor activated
with step logic.
rCC
Compressors rotation enabled:
(n;Y)
n
= CP1 is always the first compressor activated.
Y
=
CP1 and CP2 activation is alternated
MCo
Maximum time with compressor active:
(0 to 255min) maximum time with ONOFF
compressor active. With
MCo=0
this function is disabled.
rtr
Percentage for regulation:
100=P1 only; 0=P2 only
CCt
Maximum duration for pull down:
(0.0 to 23h50min, res. 10min) after elapsing this interval of
time the super cooling function is immediately stopped
CCS
Differential for pull down:
(-12.0 to 12.0°C; -21 to 21°F) during any super cooling phase the
regulation SETPOINT is moved to
SET+CCS
(in normal mode) or to
SET+HES+CCS
(in
energy saving mode)
oHt
Overheating before activating the pull-down function (when in normal mode):
(1.0 to
12.0°C; 1 to 21°F) this is the upper threshold limit used to activate the super cooling function.
oHE
Overheating before activating the pull-down function (when in energy saving mode):
(1.0
to 12.0°C; 1 to 21°F) this is the upper threshold limit used to activate the super cooling
function.
Con
Compressor ON time with faulty probe:
(0 to 255 min) time during which the compressor is
active in case of faulty thermostat probe. With
CY=0
compressor is always OFF.
CoF
Compressor OFF time with faulty probe:
(0 to 255 min) time during which the compressor is
OFF in case of faulty thermostat probe. With
Cn=0
compressor is always active.
HY1
Differential for proportional regulation:
(0.1 to 25.5°C; 1 to 45°F) differential for proportional
regulation band. It is used when
PROBE SETUP - Prb
PbC
Probe selection:
ntC; PtC; Pt1000
ot
Probe P1 calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust any possible offset of the
first probe.
P2P
Evaporator probe presence:
n
= not present;
Y
= the defrost stops by temperature.
oE
Evaporator probe calibration:
-12.0 to 12.0°C; -21 to 21°F) allows to adjust any possible
offset of the third probe.
P3P
Third probe presence:
n
= not present;
Y
= the defrost stops by temperature.
o3
Third probe calibration:
-12.0 to 12.0°C; -21 to 21°F) allows to adjust any possible offset of
the third probe.
P4P
Fourth probe presence:
n
= not present;
Y
= the condenser temperature alarm is managed.
o4
Fourth probe calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust any possible offset of
the condenser probe.
DISPLAY - diS
iCo
Enabling icon visualisation:
(n; Y) the icons can be hidden during normal functioning
CF
Temperature measurement unit:
(°C; °F)
°C
= Celsius;
°F
= Fahrenheit.
rES
Resolution (only for °C):
(dE; in)
dE
= decimal;
in
= integer.
Lod
Probe displayed:
(
P1; P2; P3; P4; SEt; dtr; USr
)
Px
=probe “x”;
SEt
=set point;
dtr
=do not
use it;
USr
=do not use it.
dLY
Temperature visualization delay:
(0.0 to 20min00sec, res. 10 sec) when the temperature
increases, the display is updated of 1°C or 1°F after this time.
dtr
Visualization percentage = F(P1;P2):
(0 to 100)
with
dtr=1
the display will show this value
VALUE=0.01*P1+0.99*P2
DEFROST - dEF
EdF
Defrost mode:
in
=fixed intervals;
rtC
=following real time clock
tdF
Defrost type: EL
=electrical heaters;
in
=hot gas;
ALt
=uses only for compressor stop defrost.
dFP
Probe selection for defrost control:
nP
=no probe;
P1
=thermostat probe;
P2
=evaporator
probe;
P3
=third probe (do not use it);
P4
=Probe on Hot Key plug.
dtE
Defrost termination temperature for defrost control:
(-55 to 50°C; -67 to 122°F) it sets the
temperature measured by the evaporator probe (
dFP
), which causes the end of defrost.
idF
Interval between two consecutives defrost cycles:
(0 to 255 hours) determines the time
interval between the beginnings of two defrosting cycles.
MdF
Maximum length for defrost:
(0 to 255 min; 0 means no defrost) when
P2P=n
(no evaporator
probe presence) it sets the defrost duration, when
P2P=Y
(defrost end based on evaporator
temperature) it sets the maximum length for defrost.
dSd
Start defrost delay:
(0 to 255 min) delay in defrost activation.
