11
ENG
“EVD ice” +0300038EN - rel. 1.1 - 23.04.2018
3. USER INTERFACE
The user interface comprises the two-digit display and keypad with three
buttons that, pressed alone or in combination, are used to perform all the
configuration and programming operations on the driver.
GAS Type
Mode
Super Heat
1
3
2
1
2
4
Fig. 3.a
Key
1
Parameter label (for commissioning/setup)
2
Keypad
3
LED status digital input start/stop control
blink/OFF = DI closed/open
4
Two-digit display
(*) when digital input is closed the LED blinks and control is active.
During commissioning/setup, the parameter label shows the meaning
of the segments displayed in the first digit, corresponding to the three
parameters being set:
A.
GAS Type: type of refrigerant;
B
. Mode: operating mode;
C
. Superheat: superheat set point.
See the “
Commissioning” chapter.
GAS Type
Mode
Super Heat
GAS Type
Mode
Super Heat
GAS Type
Mode
Super Heat
A. Refrigerant
B. Mode (operating mode)
C. Superheat set point
3.1 Keypad
Key
Description
UP /
DOWN
•
Increases/decreases the value of the set point or
other selected parameter
PRG/Set
•
At the end of the commissioning procedure, if
pressed for 2 s, exits the menu and control starts;
•
Enter/ exit programming mode, saving the
parameters;
•
Reset E8 alarm.
Tab. 2.a
3.2 Display and visualisation
During normal operation, the two-digit display shows the superheat
measure and any alarms.
The display interval for the superheat value is -5 to 55 K (-9 to 99 °F).
In general, values between -99 and 999 are displayed as follows:
1.
values from 0 to 10 are displayed with decimal point and decimals;
2.
values greater than 99 are displayed in two steps:
- first, the hundreds, followed by “H”
- then the tens and units.
3.
values less than -9 are displayed in two steps:
- first the “-“sign;
- then the tens and units.
GAS Type
Mode
Super Heat
GAS Type
Mode
Super Heat
123 --->
GAS Type
Mode
Super Heat
GAS Type
Mode
Super Heat
-99 --->
Fig. 3.b
Note:
the decimal point in the digit on the right indicates the status
of the digital start/stop adjustment input. With the input closed the dot
is lit flashing.
3.3 Programming mode
The parameters can be modified using the front keypad.
Important:
modify the control parameters,
ONLY AFTER
having
completed the guided commissioning procedure, described in chapter 4.
Modifying the Service parameters
The Service parameters include, in addition to the parameters for the
configuration of input S1, those corresponding to the network address,
probe readings, protectors and manual positioning. See the parameter
table.
Procedure:
1.
press UP and DOWN together and hold for more than 5 s: the first
parameter is displayed: P1 = probe S1 reading;
2.
press UP/ DOWN until reaching the desired parameter;
3.
press PRG/ Set to display the value;
4.
press UP/ DOWN to modify the value;
5.
press PRG/ Set to confirm and return to the parameter code;
6.
repeat steps 2 to 5 to modify other parameters;
7.
(when the parameter code is displayed) press PRG/Set and hold for more
than 2 s to exit the parameter setting procedure.
GAS Type
Mode
Super Heat
Fig. 3.c
Note:
if no button is pressed, after around 30 s the display
automatically returns to standard visualisation.
3.4 Restore default parameters (factory)
The driver can be reset to the default parameter values.
Procedure:
when the display is on standby, press all three buttons together . After
5 seconds, the display shows “rS”. The reset procedure can be confirmed
within 10 seconds, by pressing PRG/SET for 3 seconds. If no button is
pressed during this time, the procedure will be cancelled.
At the end the display shows two hyphens and then awaits the
commissioning parameters.