Emerson Dixell Wing XW570K

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1592009630 XW570K GB r1.0 04.08.2015 XW570K 1/6

WING

XW570K

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 XW570K is microprocessor based controllers suitable for applications on medium or low temperature

refrigerating units. It must be connected by means of a two-wire cable ( 1mm) at a distance of up to 30 meters

to the keyboards T850. They are provided with six relay outputs to control compressor, defrost - which can be

either electrical or hot gas - the evaporator fans, the lights, the alarm and an auxiliary output. They are also

provided with three NTC probe inputs, one for temperature control, one to control the defrost end temperature of

the evaporator and the third, optional, for the display. There are two digital inputs (free contact) for the door

switch and configurable by parameter.

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”. A 4÷20 mA output

to control evaporator or condenser fans and the direct serial output RS485 are available as options.

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 = rtc) the defrost is made

in real time depending on the hours set in the parameters Ld1..Ld8 on workdays and in Sd1…Sd8 in holidays;

(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:

C-n = running with the compressor, OFF during the defrost;

C-y = running with the compressor, ON during the defrost;

O-n = continuous mode, OFF during the defrost;

O-y = continuous mode, ON during the 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 AUXILIARY OUTPUT

The auxiliary output is switch ON and OFF by means of the corresponding button on the keyboard.

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.

By holding it pressed for 3s Energy Saving function is started or stopped.

By holding it pressed for 6s, the Holiday function is started or stopped.

By pressing it when the current time is displayed, it allows the User to set Energy Saving times.

Switch ON and OFF the auxiliary output.

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

The compressor is running

FLASHING

- Programming Phase (flashing with LED )

- Anti-short cycle delay enabled

The fan is running

FLASHING

Programming Phase (flashing with LED )

The defrost is enabled

FLASHING

Drip time in progress

The Fast Freezing cycle is enabled

- 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

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

DEFROST

The Manual Defrost is activated

DEFROST

FLASHING

Defrost times programming is enabled

ENERGY SAVING

The Energy Saving is enabled

ENERGY SAVING

FLASHING

Energy saving times programming is enabled

LIGHT

The Light is ON

AUX

The Auxiliary output is ON

ON/OFF

The instrument is OFF

4.2 HOW TO SEE THE MIN TEMPERATURE

1. Press and release the n key.

2. The “Lo” message will be displayed followed by the minimum temperature recorded.

3. By pressing the n key or waiting for 5s the normal display will be restored.

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