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I2F Digital input operating mode: configure the digital input function:

EAL = generic alarm;

bAL = serious alarm mode;

PAL = Pressure switch;

dFr = Start defrost;

AUS = Not used;

Es = Energy Saving;

onF = remote On/OFF.

did Time interval/delay for digital input alarm:(0

pressure switch activation when I2F=PAL. If I2F=EAL or bAL (external alarms), "did" parameter defines

the time delay between the detection and the successive signalling of the alarm.

SAA Set Point for anti-condensing heater: (-50,0÷110,0°C; -58÷230°F) defines the room temperature

setpoint to switch on the anti-condensing heater.

OTHER

Adr RS485 serial address (1÷247): Identifies the instrument address when connected to a ModBUS

compatible monitoring system.

Rel Release software: (read only) Software version of the microprocessor.

Ptb Parameter table: (read only) it shows the original code of the

Prd Probes display: (read only) display the temperature values of the evaporator probe Pb2 and the

auxiliary probe Pb3.

Pr2 Access to the protected parameter list (read only).

6. DIGITAL INPUTS

The Wing series can support up to 2 free contact digital inputs. One is always configured as door switch, the

second is programmable in seven different configurations by the "I2F" parameter.

6.1 DOOR SWITCH INPUT

It signals the door status and the corresponding relay output status through the "odc" parameter:

no = normal (any change);

Fan = Fan OFF;

CPr = Compressor OFF;

F_C = Compressor and fan OFF.

Since the door is opened, after the delay time set through parameter "dOA", the alarm output is enabled and

the display shows the message "dA". The alarm stops as soon as the external digital input is disabled again.

During this time and then for the delay "dot" after closing the door, the high and low temperature alarms are

disabled.

6.2 CONFIGURABLE INPUT - GENERIC ALARM (EAL)

As soon as the digital input is activated the unit will wait for "did" time delay before signalling the "EAL" alarm

message. The outputs status don't change. The alarm stops just after the digital input is de-activated.

6.3 CONFIGURABLE INPUT - SERIOUS ALARM MODE (BAL)

When the digital input is activated, the unit will wait for "did" delay before signalling the "BAL" alarm message.

The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-activated.

6.4 CONFIGURABLE INPUT - PRESSURE SWITCH (PAL)

If during the interval time set by "did" parameter, the pressure switch has reached the number of activation of

the "nPS" parameter, the "PAL" pressure alarm message will be displayed. The compressor and the regulation

are stopped. When the digital input is ON the compressor is always OFF.

6.5 CONFIGURABLE INPUT - START DEFROST (DFR)

It executes a defrost if there are the right conditions. After the defrost is finished, the normal regulation will

restart only if the digital input is disabled otherwise the instrument will wait until the "Mdf" safety time is expired.

6.6 CONFIGURABLE INPUT - ENERGY SAVING (ES)

The Energy Saving function allows to change the set point value as the result of the SET+ HES (parmeter)

sum. This function is enabled until the digital input is activated.

6.7 CONFIGURABLE INPUT - REMOTE ON/OFF (ONF)

This function allows to switch ON and OFF the instrument.

6.8 DIGITAL INPUTS POLARITY

The digital inputs polarity depends on "I1P" and "I2P" parameters.

CL : the digital input is activated by closing the contact.

OP : the digital input is activated by opening the contact

7. INSTALLATION AND MOUNTING

Instruments XW260L shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two screws

x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L). The temperature

range allowed for correct operation is 0 - 60 °C. Avoid places subject to strong vibrations, corrosive gases,

excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the cooling

holes.

7.1 CUT OUT

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255 min.) Time interval to calculate the number of the

parameter map.

+ 1

165

-1

+ 0.5

150

-0

7.2 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD

CLICK!

7.3 MOUNTING WITH KEYBOARD COVER OPENING UPWARD

CLICK!

8. ELECTRICAL CONNECTIONS

The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5 mm

the digital and analogue inputs. Relays and power supply have a Faston connection (6,3mm). Heat-resistant

cables have to be used. Before connecting cables make sure the power supply complies with the instrument's

requirements. Separate the probe cables from the power supply cables, from the outputs and the power

connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a

suitable external relay.

N.B. Maximum current allowed for all the loads is 20A.

8.1 PROBE CONNECTIONS

The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is

recommended to place the thermostat probe away from air streams to correctly measure the average room

temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most

ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost

termination.

9. TTL SERIAL LINE

The TTL connector allows, by means of the external module TTL/RS485, to connect the unit to a network line

ModBUS-RTU compatible as the

The same TTL connector is used to upload and download the parameter list of the "HOT KEY".

∅

10. USE OF THE PROGRAMMING "HOT KEY "

The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the "Hot

Key" and vice-versa.

10.1 DOWNLOAD (FROM THE "HOT KEY" TO THE INSTRUMENT)

Turn OFF the instrument by means of the ON/OFF key, remove the TTL serial cable if present, insert

the "Hot Key" and then turn the Wing ON.

Automatically the parameter list of the "Hot Key" is downloaded into the Wing memory, the "DoL"

message is blinking. After 10 seconds the instrument will restart working with the new parameters.

Turn OFF the instrument remove the "Hot Key", plug in the TTL serial cable, then turn it ON again.

At the end of the data transfer phase the instrument displays the following messages:

"end " for right programming. The instrument starts regularly with the new programming.

"err" for failed programming. In this case turn the unit off and then on if you want to restart the download again

or remove the "Hot key" to abort the operation.

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UHO FRG

monitoring system XJ500 (Version 3.0).

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