Emerson Dixell Wing XW570K - 8. ANALOGUE OUTPUT 4-20 mA (OPTIONAL); 9. INSTALLATION AND MOUNTING; 9.1 T850-CUT OUT; 9.2 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD

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1592009630 XW570K GB r1.0 04.08.2015 XW570K 4/6

8. ANALOGUE OUTPUT 4÷20 mA (OPTIONAL)

The analogue output is obtained through a 420mA signal proportional to the input selected in parameter

“CAO”. Through the analogue output the speed of fans can be regulated according to the input variable.

The following input types can be selected through the “CAO” parameter:

“CAO” = P1 room temperature

“CAO” = P2 evaporator temperature

“CAO” = P3 third probe temperature

“CAO” = 1r2 room temperature - evaporator temperature

To adjust the analogue output the following parameters are available:

“AOS” = Start point for analogue output

“APb” = Band width for analogue output can be either positive (direct action) and negative (inverse

action).

Named T the input, the relationship input-output is given by the following charts

NOTE: When the defrost is in progress, the analogue output is set to the minimum value (4 mA). This condition

lasts until the defrost terminates.

9. INSTALLATION AND MOUNTING

T850 keyboards shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two screws



3 x

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

XW570K shall be mounted in a panel with two or more screws and they must be connected to the keyboards by

means of a two-wire cable ( 1mm). 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.

9.1 T850 - CUT OUT

165

150

+0.5

-0

+0.5

-0

-1

Ø3 x2

9.2 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD

CLICK!

9.3 MOUNTING WITH KEYBOARD COVER OPENING UPWARD

CLICK!

10. ELECTRICAL CONNECTIONS

XW570K are provided with screw terminal block to connect cables with a cross section up to 2,5 mm

for the

RS485(optional) and the keyboard. Connecting other inputs, power supply and relays, XW570K are provided

with 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.

10.1 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.

11. TTL/RS485 SERIAL LINE

The TTL connector allows, by means of the external module TTL/RS485 (XJ485), to connect the unit to a

network line ModBUS-RTU compatible as the Dixell monitoring system XJ500 (Version 3.0).

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

can be ordered wit the serial output RS485(Optional).

12. 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.

12.1 DOWNLOAD (FROM THE “HOT KEY” TO THE INSTRUMENT)

1. 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.

2. 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.

3. 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.

12.2 UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)

1. Turn OFF the instrument by means of the ON/OFF key and remove the TTL serial cable if present; then

turn it ON again.

2. When the Wing unit is ON, insert the “Hot key” and push è key; the "uPL" message appears.

3. Push “SET” key to start the UPLOAD; the “uPL” message is blinking.

4. 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.

“err” for failed programming. In this case push “SET” key if you want to restart the programming again

or remove the not programmed “Hot key”.

13. ALARM SIGNALS

Message

Cause

Outputs

“P1”

Thermostat probe failure

Alarm output ON; Compressor output according

to “COn” and “COF”

“P2”

Evaporator probe failure