1598024314 XR30CX VST GB r3.1 05.10.2015.doc
XR30CX
1/4
Digital controllers with off cycle defrost, AUX relay,
power supply 100 or 230VAC with or w/out battery
backup.
XR30CX
REF. 0-7020115, 0-7020110, 0-7020122, 0-7020202, 7020346.
1. GENERAL WARNING
1.1
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.
1.2
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.
2. GENERAL DESCRIPTION
NOTE: This manual is related to the following models:
Model description
User code
Power Supply
Options
XR30CX -4S1C1
0-7020115
100VAC
-
XR30CX -5S1C1
0-7020110
230VAC
-
XR30CX -5S1C1
0-7020122
230VAC
Battery backup
XR30CX -5S1C1
0-7020202
230VAC
Battery backup – Alarm with gold
contacts
Model XR30CX, format 32x74mm, is a digital thermostat with off cycle defrosting function designed
for refrigeration applications. It provides two relay outputs, one for the compressor and the other one
for alarm signalling. It is also provided with a PT1000 or PTC probe input for temperature control.
Moreover, the digital input can operate as third temperature probe.
The battery-backup version is also provided with an input for external battery. It is used to supply the
controller in case of main voltage failure.
By using the HOT-KEY input/output port is possible to upload a new parameter map from (program
the controller) or save the actual parameter map to an external memory device (named HOTKEY
memory). Moreover, by using this port is possible to connect the device to a network line (ModBUS-
RTU compatible) such as a
dIXEL
monitoring units of X-WEB family. In this case, a special
adapter (XJ485-CX) has to be used.
3. CONTROLLING LOADS
3.1
COMPRESSOR
The regulation is performed according to
the temperature measured by the
thermostat probe with a positive
differential (HY) 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.
Time
Temper.
Compr.
SET
ON
In case of fault in the thermostat probe the start and stop of the compressor are timed through
parameters Con and CoF.
3.2
DEFROST
Defrost is performed through a simple stop of the compressor. Parameter idF controls the interval
between defrost cycles, while its length is controlled by using MdF parameter.
3.3
DEVICE OPERATIONS IN CASE OF POWER FAILURE, IF A BACK UP
BATTERY IS CONNECTED (ONLY FOR 7020122 AND 7020202 MODELS)
3.3.1
Power failure without temperature alarm
If the controller is connected to the battery, during a power failure:
1. The alarm LED icon will be lit.
2. The alarm relay will be activated according to the Aro parameter.
3. Every 5s the buzzer will ring 3 times during 1s.
The buzzer will be muted after pressing any button. It will restart ringing after the bon time if the
power failure keeps on lasting. After pushing SET button, the controller will display the temperature for
5s.
3.3.2
Power failure and temperature alarms
If a temperature alarm happens during a power failure:
1.
The alarm LED icon will be lit.
2.
The buzzer will ring continuously.
3.
The displays will shows: real temperature for 1s, alarm label for 1s and remains off for 5s.
The buzzer will be muted for the bon time after pressing any button.
The battery can guarantee at least 50 hours of operations in this conditions.
The time for a full charge of the battery is 94 hours.
4. FRONT PANEL COMMANDS
To display target set point.
In programming mode it selects a parameter or confirm an operation.
(DEF) To start a manual defrost.
(UP) To see the max stored temperature. In programming mode it browses
parameters or increases the displayed value.
(DOWN) To see the min stored temperature. In programming mode it
browses the parameters or decreases the displayed value.
To switch the instrument on and off when onF=oFF.
NOT USED
KEY COMBINATIONS:
+
To lock & unlock the keyboard.
+
To enter in programming mode.
+
To return to the room temperature display.
4.1
USE OF LEDS
Each LED function is described in the following table.
LED
MODE
FUNCTION
ON
Compressor enabled
Flashing
Anti-short cycle delay enabled
ON
Defrost enabled
ON
An alarm is occurring
ON
Continuous cycle is running
ON
Energy saving enabled
°C/°F
ON
Measurement unit
Flashing
Programming phase
5. MAX & MIN TEMPERATURE MEMORIZATION
5.1
HOW TO SEE THE MIN TEMPERATURE
1.
Press and release the DOWN button.
2.
The “Lo” message will be displayed followed by the minimum temperature recorded.
3.
By pressing the DOWN button again or by waiting for 5s the normal display will be restored.
5.2
HOW TO SEE THE MAX TEMPERATURE
1.
Press and release the UP button.
2.
The “Hi” message will be displayed, followed by the maximum recorded temperature.
3.
By pressing the UP button again or by waiting for 5s, the normal display will be restored.
5.3
HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
1.
Keep SET button pressed more than 3s while the max or min temperature is displayed
(“rSt” message will be displayed).
2.
To confirm the operation the “rSt” message starts blinking and the normal temperature will be
displayed.
