1592009140 XW563L GB r1.2 03.08.2015
XW563L
1/6
W
ING
XW563L
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.
Dixell Srl reserves the right to change the composition of its products, even without
notice, ensuring the same and unchanged functionality.
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
Each model in the
XW500
series is fitted with a Real Time Clock which allows
programming of up to eight daily defrost cycles, divided into holidays and workdays. A
“Day and Night” function with two different set points is fitted for energy saving.
Model
XW563L
,
38x185
mm format, is microprocessor based controller suitable for
applications on medium or low temperature refrigerating units. It is provided with four relay
outputs to control compressor, defrost - which can be either electrical or hot gas - the
evaporator fans and the lights.
It is also provided with two NTC probe inputs, one for temperature control, one to control
the defrost end temperature of the evaporator. There are two digital inputs (free contact)
for the door switch and configurable by parameter.
The RS485 output allows the user to connect a
ModBUS-RTU
compatible monitoring
system and the TTL output allows to programme the parameter list with the
“Hot Key”.
3.
CONTROLLING LOADS
3.1
THE COMPRESSOR
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 “
COn
” and “
COF
”.
3.2
FAST FREEZING
When defrost is not in progress, it can be activated the keypad by holding the
o
key
pressed for about 3 seconds. The compressor operates in continuous mode for the time
set through the “
CCt
” parameter. The cycle can be terminated before the end of the set
time using the same activation key,
o
for about 3 seconds.
3.3
DEFROST
Three defrost modes are available through the “
tdF
” parameter: defrost with electrical
heater, hot gas or thermostatic defrost. The defrost interval is control by means of
parameter “
EdF
”: (EdF=in) the defrost is made every “
IdF
” time, (EdF=Sd) the interval
“IdF” is calculate through Smart Defrost algorithm (only when the compressor is ON and
the evaporator temperature is bigger than “SdF” parameter).
At the end of defrost the drip time is controlled through the “
Fdt
” parameter.
3.4
CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the “
FnC
” parameter:
FnC=C-n
fans will switch ON and OFF with the compressor and
not run
during
defrost
:
;
FnC=C-y
fans will run continuously, but not during defrost
After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd”
parameter.
FnC=O-n
fans will switch ON and OFF with the compressor and
run
during defrost;
FnC=O-y
fans will run continuously also during defrost
An additional parameter “FSt” provides the setting of temperature, detected by the
evaporator probe, above which the fans are always OFF. This can be used to make sure
circulation of air only if his temperature is lower
than set in “FSt”.
4.
KEYBOARD
To display and modify target set point; in programming mode it selects a
parameter or confirm an operation.
By holding it pressed for 3s when max or min temperature is displayed it will be
erased.
By pressing it when the current time is displayed, it allows the User to re-set the
current time and three holidays.
To see the max. stored temperature; in programming mode it browses the
parameter codes or increases the displayed value. By holding it pressed for 3s
the fast freezing cycle is started.
To see the min stored temperature; in programming mode it browses the
parameter codes or decreases the displayed value.
By holding it pressed for 3s the current time is displayed and it permits the User
to enter Energy saving, Defrost and Clock parameter menu.
By holding it pressed for 3s the defrost is started.
By pressing it when the current time is displayed, it allows the User to set
defrost times.
Switch ON and OFF the cold room light.
Switch ON and OFF the instrument.
KEY COMBINATIONS
+
To lock and unlock the keyboard.
+
To enter the programming mode.
+
To exit the programming mode.
4.1
USE OF LEDS
Each LED function is described in the following table.
LED MODE
Function
ON
The compressor is running
FLASHING
- Programming Phase (flashing with LED
)
- Anti-short cycle delay enabled
ON
The fan is running
FLASHING
Programming Phase (flashing with LED
)
ON
The defrost is enabled
FLASHING
Drip time in progress
ON
The Fast Freezing cycle is enabled
ON
- ALARM signal
- In “Pr2” indicates that the parameter is also present in “Pr1”
Function of the LEDs placed on the left top side of buttons:
BUTTON
MODE
FUNCTION
DOWN/CLOCK
ON
Time is displayed
DOWN/CLOCK
FLASHING
Programming time is enabled
DOWN/CLOCK SLOW FLASHING Holiday function is ON
SET
FLASHING
The Set point is displayed and it can be modified
