1592020110 XR01-02CX GB r1.2 24.07.2015
XR01-02CX
1/3
DIGITAL CONTROLLER
XR01-02CX
1.
CONTENTS
1.
Contents ____________________________________________________________________________ 1
2.
General warnings _____________________________________________________________________ 1
3.
General description ___________________________________________________________________ 1
4.
Regulation __________________________________________________________________________ 1
5.
Defrost (ONLY XR02CX) _______________________________________________________________ 1
6.
Front panel commands ________________________________________________________________ 1
7.
Parameters __________________________________________________________________________ 2
8.
Digital inputs _________________________________________________________________________ 2
9.
Installation and mounting _______________________________________________________________ 2
10.
Electrical connections _________________________________________________________________ 2
11.
How to use the hot key_________________________________________________________________ 2
12.
Alarm signalling ______________________________________________________________________ 2
13.
Technical data _______________________________________________________________________ 2
14.
Connections _________________________________________________________________________ 3
15.
Default setting values __________________________________________________________________ 3
2.
GENERAL WARNINGS
2.1
PLEASE READ BEFORE USING THIS MANUAL
This manual is part of the product and should be kept near the instrument for easy and quick
reference.
The instrument shall not be used for purposes different from those described hereunder. It cannot be
used as a safety device.
Check the application limits before proceeding.
Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality.
2.2
SAFETY PRECAUTIONS
Check the supply voltage is correct before connecting the instrument.
Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden
temperature changes with high atmospheric humidity to prevent formation of condensation
Warning: disconnect all electrical connections before any kind of maintenance.
Fit the probe where it is not accessible by the End User. The instrument must not be opened.
In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.” (see
address) with a detailed description of the fault.
Consider the maximum current which can be applied to each relay (see Technical Data).
Ensure that the wires for probes, loads and the power supply are separated and far enough from each
other, without crossing or intertwining.
In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel with
inductive loads could be useful.
3.
GENERAL DESCRIPTION
Model
XR01CX
,
format 32 x 74 x50
mm
format is a single stage temperature controller suitable for
applications in the field of refrigeration or heating. It provides a relay output to drive the compressor. It is also
provided with 1 NTC probe input and one configurable digital input. The instrument is fully configurable
through special parameters that can be easily programmed through the keyboard or the by HOTKEY.
Model
XR02CX
,
format 32 x 74 x 50 mm
, is a digital thermostat with off cycle defrost designed for
refrigeration applications at normal temperature. It provides a relay output to drive the compressor. It is also
provided with 1 NTC probe input and one configurable digital input. The instrument is fully configurable
through special parameters that can be easily programmed through the keyboard or the by HOTKEY.
4.
REGULATION
4.1
THE REGULATION OUTPUT
The regulation is performed according to the temperature measured by probe. The XR01CX is provided with
the
CH
programmable parameter wich enables the user to set the regulation both for heating or cooling
applications:
CH=cL
--> cooling applications;
CH=Ht
--> heating applications;
4.2
COOLING APPLICATIONS
The regulation is performed according to
the temperature measured by the
thermostat probe with a positive differential
from the set point: if the temperature
increases and reaches set point plus
differential the compressor is started and
then turned off when the temperature
reaches the set point value again.
In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters
“
Cy
” and “
Cn
”.
4.3
HEATING APPLICATIONS ( ONLY FOR XR01CX)
The Hy value is automatically subtracted to
the SET POINT. If the temperature decreases
and reaches set point minus differential the
output is started and then turned off when the
temperature reaches set point value again.
5.
DEFROST (ONLY XR02CX)
Defrost is performed through a simple stop of the compressor. Parameter “i
d
” controls the interval
between defrost cycles, while its length is controlled by parameter “
Md
”.
6.
FRONT PANEL COMMANDS
To display target set point, in
programming mode it selects a
parameter
or
confirm
an
operation
To start a manual defrost (Only
XR02CX)
In programming mode it browses
the parameter codes or increases
the displayed value
AUX
In programming mode it browses
the
parameter
codes
or
decreases the displayed value
KEYS COMBINATION
+
To lock or unlock the keyboard
+
To enter in programming mode
+
To return to room temperature display
LED
MODO
SIGNIFICATO
On
Compressore enabled
Flashing
Anti short cycle delay enabled (AC parameter)
On
Defrost in progress
Flashing
Dripping in progress
On
Measurement unit
Flashing
Programming mode
On
Measurement unit
Flashing
Programming mode
6.1
HOW TO SEE THE SET POINT
1.
Push and immediately release the
SET
key, the set point will be showed;
2.
Push and immediately release the
SET
key or wait about 5s to return to normal visualisation.
6.2
HOW TO CHANGE THE SETPOINT
1.
Push the SET key for more than 2 seconds to change the Set point value;
2.
The value of the set point will be displayed and the “°C” or “°F” LED starts blinking;
3.
To change the Set value push the o or n arrows within 10s.
4.
To memorise the new set point value push the SET key again or wait 10s.
6.3
HOW TO START A MANUAL DEFROST (ONLY XR02CX)
Push the
DEF
key for more than 2 seconds and a manual defrost will start
6.4
HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1.
Enter the Programming mode by pressing the
SET
+
keys for 3s (“
°C” or “°F”
LED starts
blinking).
2.
Select the required parameter. Press the “
SET
” key to display its value
3.
Use or to change its value.
4.
Press “
SET
” to store the new value and move to the following parameter.
To exit
: Press
SET
+ or wait 15s without pressing a key.
NOTE
: the set value is stored even when the procedure is exited by waiting the time-out to expire.
6.5
HIDDEN MENU
The hidden menu includes all the parameters of the instrument.
HOW TO ENTER THE HIDDEN MENU
1.
Enter the Programming mode by pressing the
SET
+
keys for 3s (“
°C” or “°F”
LED starts
blinking).
2.
Released the keys, then push again the
SET
+
keys for more than 7s. The L2 label will be
displayed immediately followed from the Hy parameter.
NOW YOU ARE IN THE HIDDEN MENU.
3.
Select the required parameter.
4.
Press the “
SET
” key to display its value
5.
Use or to change its value.
6.
Press “
SET
” to store the new value and move to the following parameter.
To exit
: Press
SET
+ or wait 15s without pressing a key.
NOTE1:
if none parameter is present in L1, after 3s the “nP” message is displayed. Keep the keys
pushed till the L2 message is displayed.
NOTE2
: the set value is stored even when the procedure is exited by waiting the time-out to expire.
HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST
LEVEL AND VICEVERSA.
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL” (user
level) by pressing
SET
+ . In HIDDEN MENU when a parameter is present in First Level the decimal
point is on.
6.6
TO LOCK THE KEYBOARD
1.
Keep pressed for more than 3s the and keys.
2.
The “
OF
” message will be displayed and the keyboard will be locked. If a key is pressed more
than 3s the “OF” message will be displayed.
6.7
TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the and keys till the
“on”
message will be displayed.
