User Interface; Graphic Terminal; Description Of The Display; Functions Of The 6 Buttons - Carel PRK300L3FK User Manual

5.1 Graphic terminal

The pRack pR300 user interface is represented by the pGD1 terminal,
panel or built-in versions.
The functions associated with the 6 buttons on the pGD1 terminal are the
same on all the screens and are described in the table below.

Functions of the 6 buttons

Button Function associated
(ALARM)
displays the list of active alarms and accesses the alarm log
used to enter the main menu tree
returns to the higher level screen
scrolls a list upwards or increases the value highlighted by
(UP)
the cursor
scrolls a list downwards or decreases the value
(DOWN)
highlighted by the cursor
(ENTER)
enters the selected submenu or confi rms the set value.
The LEDs associated with the buttons have the following meanings.
Meaning of LEDs
LED Button Meaning
Red Flashing: active alarms present and not acknowledged
Steady: alarms present and acknowledged
Yellow
pRack pR300 on
Green
pRack pR300 powered

5.2 Description of the display

There are three fundamental types of screens shown to the user:
•
Main screen
•
Customised main screen
•
Menu screen
•
Screen for displaying/setting the parameters
Main screen
The main screen is the screen that the software on board pRack pR300
automatically returns to 5 minutes after the last button was pressed.
An example of the main screen is shown in the fi gure, highlighting the
fi elds and icons used:
pRack 14:30 20/01/10
1
Suction:
2
Condensing
Superheat:
Unit OFF by
3
keyboard
Fig. 5.a
1 Time and date
2 Main values.
3 Unit status (unit off ) or compressor and fan status (unit on)
4 Active alarm Signal and manual operation
5
Access further information screens (menu branch A.a) by pressing button
Note:
•
the information shown on the main screen varies according
to the system confi guration (one line, two lines, two lines with
shared condenser) and the type of control value used (pressure or
temperature). For two line systems, a parameter is used to select which
line is shown fi rst.

USER INTERFACE

5.
Tab. 5.a
Tab. 5.b
4.16barg
12.06barg
4.7K
4
5
•
the other information shown in menu branch A.a. varies according to
the system confi guration. For two line systems, pressing
main screen accesses a diff erent screen based on the starting point
(line 1, line 2).
Customised main screen
pRack pR300 off ers the possibility to confi gure the information displayed
on the main screen and the second screen (pressing DOWN) as desired.
For example, information on specifi c probes with physical readings
(pressure or temperature), no longer grouped by screen but rather
customised row-by-row on the display. The basic structure comprises two
screens that are scrolled by pressing Up and Down; all the information
can be confi gured for display on the main screen relating to pressure or
temperature, the characteristic that is not selected will then be displayed
on the secondary screen, only if signifi cant.
Main screen
In the example, a suction line with control by pressure has been
confi gured, the main screen displays the values read by the suction and
condensing pressure probes, while the superheat is displayed in degrees
centigrade; the secondary screen will show the converted temperatures
of the suction and condensing pressure probe readings, together with
the description of superheat by pressure, which is not displayed as this
information would not be signifi cant. By default the main screen will
continue to show the same information as always displayed on the pR100
(depending on the type of confi guration: SUCTION&CONDENSER, rather
than SUCTION and the type of control PRESSURE/TEMPERATURE).
When starting the fi rst time, the main screen will refl ect the settings
made. Custom confi guration of the main screen is then performed
subsequently, as described below:
The confi guration is made under Settings -> Language in screen Fb04
On this screen, users can choose whether to confi gure the part relating to
the probes, or the bottom bar with the percentages or number of active
peripherals in the circuit. On screen Fb04, go to the fi eld underneath "Probe
confi guration", change the value to "CONFIGURE" and press Enter. The following
screen (Fb05) is displayed, which shows the layout of the main screen with the
modifi able fi elds for each row. The following options are available:
Probe Description
Suction Suction used for single suction line
Condenser Condenser used for single condenser line
Superheat Superheat used for single suction line
L1 – Suction Suction on line 1
L2 – Suction Suction on line 2
L1 – Condenser Condenser on line 1
L2 – Condenser Condenser on line 2
Suction temperature Suction temperature for single suction line
L1 - Suction temperature Suction temperature on line 1
L2 - Suction temperature Suction temperature on line 2
Discharge temperature Discharge temperature for single suction line
L1 – Discharge temperature Discharge temperature on line 1
L2 – Discharge temperature Discharge temperature on line 2
Auxiliary Auxiliary probe for single suction line
L1 - Auxiliary Auxiliary probe on line 1
L2 - Auxiliary Auxiliary probe on line 2
L1 - Superheat Superheat on line 1
L2 - Superheat Superheat on line 2
EVD1 - Condenser Condenser line 2 connected to driver 1
EVD2 - Condenser Condenser line 2 connected to driver 2
29
ENG
from the
Secondary screen
Fig. 5.d
pRack +0300025EN rel. 1.3 - 17.12.2015
Tab. 5.c