dixell XW562K Installation And Operating Instructions Manual
dIXEL
Installing and Operating Instructions
Installing and Operating InstructionsInstalling and Operating Instructions
Installing and Operating Instructions
1598001822
1598001822 XW562K LND GB R3.0 10.11.2007.doc XW562K
1/6
XW562K
XW562KXW562K
XW562K ---- VVVV650
650650
650 AND CX650
AND CX650 AND CX650
AND CX650
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.p.A.” (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
The XW562K series is fitted with a Real Time Clock which allows programming of up
to eight daily defrost cycles, divided into holidays and workdays.
Model XW562K, 127x123 mm format, is microprocessor based controller suitable for
applications on medium or low temperature refrigerating units. It is provided with six
relay outputs to control 2 compressors, defrost - which can be either electrical or hot
gas - the evaporator fans, the condenser fan and the alarm output. They are also
provided with 3 NTC probe inputs, one for temperature control, the other 2 to control
the defrost end temperature of the evaporators. There are 3 digital inputs (free
contact) for the door switch, the pressure switch and for safety end of defrost.
The electronic controller can work with two parameter lists, switch over by a key.
The standard TTL output allows the user to connect, by means of a TTL/RS485
external module, a ModBUS-RTU compatible monitoring system and to programme
the parameter list with the “Hot Key”.
The controller also provides an output for remote keyboard V650 or CX650.
3 CONTROLLING LOADS
3.1 THE COMPRESSORS
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. The compressor is 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 2ND COMPRESSOR MANAGEMENT
The relay of the second compressor is activated in parallel with the relay of the first
compressor, with a possible delay set in the AC1 or AC2 parameters, depending on
program 1 or 2. Both the compressors are switched off at the same time.
3.3 DEFROST
2 defrost modes are available through the “tdF” parameter: defrost with electrical
heater or hot gas. The defrost interval is control by means the real time clock,
depending on the hours set in the parameters Ld1..Ld8 on workdays and in
Sd1…Sd8 in holidays for program 1, 2L1.. 2L8 on workdays and in 2S1…2S8 in
holidays for program 2.
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 for program 1 and
Fn2” parameter for program 2:
C-n fans will switch ON and OFF with the compressor and not run during defrost;
C-y fans will switch ON and OFF with the compressor, also during defrost
After defrost, there is a timed fan delay allowing for drip time, set by means of the
“Fnd” parameter.
O-n fans will run continuously and not run during defrost;
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”.
3.5 CONTROL OF CONDENSER FAN
The condenser fan relay is always activated except during defrost. During the defrost
the status of condenser fan depends on the cFE parameter:
with cFE= no the condenser fan doesn’t run during defrost
with cFE= yES the condenser fan runs during defrost
4 KEYBOARD
To display and modify target set point; in programming mode it selects a
parameter or confirms an operation.
By pressing it when the current time is displayed, it allows the User to reset the current time and three holidays.
In programming mode it browses the parameter codes or increases the
displayed value.
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, Defrost and Clock parameter menu.
By holding it pressed for 3s the defrost is started. The manual defrost
overrides the minimum running time of a compressor (“on” parameter)
By pressing it when the current time is displayed, it allows the User to
set defrost times.
Prg1 Keep it pressed for 2 seconds to switch the controller from the
Program 2 to the Program 1.
Prg2 Keep it pressed for 2 seconds to switch the controller from the
Program 1 to the Program 2.
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 1 is running
FLASHING - Programming Phase (flashing with )
- Anti-short cycle delay enabled
ON The defrost is enabled
FLASHING Programming Phase (flashing with )
Drip time in progress
ON The evaporator fan is running
FLASHING The evaporator fan delay after defrost is running
ON The compressor 2 is running
FLASHING The second compressor delay is running
ON Alarm is happening
ON Condenser fan is running
***
ON Prg1 is running
*
ON Prg2 is running
dIXEL
Installing and Operating Instructions
Installing and Operating InstructionsInstalling and Operating Instructions
Installing and Operating Instructions
1598001822
1598001822 XW562K LND GB R3.0 10.11.2007.doc XW562K
2/6
Function of the LEDs placed on the left top side of buttons (V650):
BUTTON MODE FUNCTION
Prg1 ON Prg1 is running
Prg2 ON Prg2 is running
4.2 HOW TO SEE AND MODIFY THE SET POINT
1. Push for 2sec the SET key: the display will show the Set point
value;
2. To change the Set value push the o or n arrows within 10s.
3. To memorise the new set point value push the SET key again or
wait 10s.
4.3 TO START A MANUAL DEFROST
Push the DEF key for more than 2 seconds and a manual defrost will start.
Manually defrost has higher priority than min. compressor running time (onparameter).
4.4 TO ENTER IN PARAMETERS LIST
To enter the parameter list (user accessible parameters) operate as follows:
1. Enter the Programming mode by pressing the Set and
DOWN key for 5s (Pr2 appears)
2. Release the keys and start blinking
3. Select the required parameter.
4. Press the “SET” key to display its value .
5. Use “UP” or “DOWN” to change its value.
6. Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 30s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-
out to expire.
4.5 HOW TO CHANGE THE PARAMETER VALUE
1. Enter the Programming mode.
2. Select the required parameter with o or n.
3. Press the “SET” key to display its value ( and LED starts blinking).
4. Use o or n to change its value.
5. Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 15s without pressing a key.
NOTE: the new programming is stored even when the procedure is exited by waiting
the time-out.
4.6 HOW TO LOCK THE KEYBOARD
1.
Keep the o and n keys pressed together for more than 3 s the o and n
keys.
2.
The “POF” message will be displayed and the keyboard is locked. At
this point it is only possible the viewing of the set point or the MAX o
Min temperature stored and to switch ON and OFF the light, the
auxiliary output and the instrument.
TO UNLOCK THE KEYBOARD
Keep the o and n keys pressed together for more than 3s.
4.7 TO SEE THE PROBE VALUES
1.
Enter in “Pr2” level.
2.
Select “Prd” parameter with o or n.
3.
Press the “SET” key to display “Pb1” label alternate with Pb1 value.
4.
Use o and n keys to display the other probe values.
5.
Press “SET” to move to the following parameter.
5 REAL TIME CLOCK FUNCTIONS
5.1 TO SEE AND SET THE CURRENT TIME AND DAY
1. Push the DOWN key for more than 3 seconds
2. The following messages are displayed in sequence:
Hur (hour) followed by the hour;
Min (Minute) followed by the minutes
dAY (day) followed by the day of the week
3. By pushing the SET key, the setting of current hour, minutes, day will
be possible
4. To exit: push SET+ UP key or wait 15 seconds
5.2 TO SET THE DEFROST TIMES
1. Push the DOWN key for more than 3 seconds
2. The current time is displayed as written above
3. By pushing DEF key, the setting defrost time will be possible.
4. To exit, press SET + UP or wait 15s without pressing any key.
5.3 STAND BY FUNCTION
1. Enter the programming.
2. Select the onF parameter
3. Change its value from “no” to “yES”.
4. Exit the programming and the instrument will be palced in stanby mode.
To revert to the normal working push for some seconds the SET key.
6 PARAMETER LIST
REGULATION
Set1 Set point 1 (LS÷US) Is the target set point 1
Set2 Set point 2 (LS2÷US2) Is the target set point 2
Hy Differential for the set1: (0,1÷25,5°C; 1÷45°F): Intervention differential for set
point1, always positive. Compressor Cut IN is Set Point Plus Differential (Hy).
Compressor Cut OUT is when the temperature reaches the set point.
Hy2 Differential for the set2: (0,1÷25,5°C; 1÷45°F): Intervention differential for set
point2, always positive. Compressor Cut IN is Set Point Plus Differential (Hy).
Compressor Cut OUT is when the temperature reaches the set point.
LS Minimum set point 1 limit: (-50,0°C
÷÷÷÷
SET1; -58°F÷SET1) Sets the minimum
acceptable value for the set point1.
US Maximum set point 1 limit: (SET1
÷÷÷÷
110°C; SET1÷230°F) Set the maximum
acceptable value for set point1.
LS2 Minimum set point 2 limit: (-50,0°C
÷÷÷÷
SET2; -58°F÷SET2) Sets the minimum
acceptable value for the set point2.
US2 Maximum set point 2 limit: (SET2
÷÷÷÷
110°C; SET2÷230°F) Set the maximum
acceptable value for set point2.
odS Outputs activation delay at start up: (0÷255 min) This function is enabled at
the initial start up of the instrument and inhibits any output activation for the
period of time set in the parameter. (AUX and Light can work)
AC Anti-short cycle delay: (0÷30 min) interval between the compressor stop and
the following restart.
AC1 2nd compressor delay at start up, program 1 (0÷255sec) Time interval
between the switching on of the first compressor and the second one.
AC2 2nd compressor delay at start up, program 2 (0÷255sec) Time interval
between the switching on of the first compressor and the second one.
on minimum compressor running time (0÷30min)
Mon Maximum compressor running time (0÷120min, with 0 the function is
disabled) If this time is reached the compressor is switched off for the Ac time,
then if there are the conditions it restarts.
cP2 Second compressor enabled with program 2 (yES, no)
Con Compressor ON time with faulty probe: (0÷255 min) time during which the
compressor is active in case of faulty thermostat probe. With COn=0 compressor
is always OFF.
COF Compressor OFF time with faulty probe: (0÷255 min) time during which the
compressor is off in case of faulty thermostat probe. With COF=0 compressor is
always active.
S2E Second program enabled: no=the second set point is disabled and not
selectable; yES = the second set point can be selected.
DISPLAY
CF Temperature measurement unit: °C = Celsius; °F = Fahrenheit . When the
measurement unit is changed the SET point and the values of the regulation
parameters have to be modified
rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display.
dE = 0,1°C; in = 1 °C
dot Display offset for program 1: (0÷25.5 °C) it is used for the special visualisation
LINDE’s algorithm.
do2 Display offset for program 2: (0÷25.5 °C) it is used for the special visualisation
LINDE’s algorithm.
dHy Display histeresys: (0÷25.5 °C) it is used for the special visualisation LINDE’s
algorithm. W hen the temperature measured by the room probe is less then
Setpoint + Hysteresis, the displayed temperature must be calculated by the
microprocessor according to the following formula:
if Tm > SEt + Hy -> Td = SEt + dot + dHy
if Tm ≤ SEt + Hy -> Td = (SEt + dot) + {[( Tm – SEt ) x dHy ] / Hy }
where Tm = temperature measured by room probe
Td = temperature displayed by the controller
DEFROST
MdF enabling the defrost key: yES= defrost key enabled;
no = defrost key disabled.
tdF Defrost type: rE = electrical heater (Compressor OFF)
in = hot gas (Compressor and defrost relays ON)
EdF Defrost mode:
rtc = Real Time Clock mode. Defrost time follows Ld1÷Ld8 parameters on
workdays and Sd1÷Sd8 on holidays for program 1, 2L1÷2L8 parameters on
workdays and 2S1÷2S8 on holidays for program 1
in = interval mode. The defrost starts when the time “Idf” is expired.
dtE Defrost termination temperature fro program 1: (-50,0÷110,0°C; -58÷230°F)
(Enabled only when the evaporator probe is present) sets the temperature
measured by the evaporator probe which causes the end of defrost.
dt2 Defrost termination temperature fro program 2: (-50,0÷110,0°C; -58÷230°F)
(Enabled only when the evaporator probe is present) sets the temperature
measured by the evaporator probe which causes the end of defrost.
IdF Interval between defrosts for program 1: (1÷120h) It is used as safety time in
case of RTC problem. Determines the time interval between the beginning of two
defrost cycles, when the RTC is broken.
Id2 Interval between defrosts for program 2: (1÷120h) It is used as safety time in
case of RTC problem. Determines the time interval between the beginning of two
defrost cycles, when the RTC is broken.
Mtd (Maximum) duration of defrost for program 1: (0÷255 min) When P2P = n, no
evaporator probe, it sets the defrost duration, when P2P = y, defrost end based
on temperature, it sets the maximum length for defrost.
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