dixell XR40CX Instrucciones de instalación y funcionamiento - Página 3

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dIXEL

Installing and Operating Instructions

nPS Pressure switch number: (0

15) Number of activation of the pressure switch, during the "did"

interval, before signalling the alarm event (I2F= PAL).

If the nPS activation in the did time is reached, switch off and on the instrument to

restart normal regulation.

odc Compressor status when open door: no; Fan = normal; CPr; F_C = Compressor OFF.

rrd Outputs restart after doA alarm: no = outputs not affected by the doA alarm; yES = outputs

restart with the doA alarm;

HES Temperature increase during the Energy Saving cycle : (-30,0°C

the increasing value of the set point during the Energy Saving cycle.

OTHER

Adr Serial address (1÷244): Identifies the instrument address when connected to a ModBUS

compatible monitoring system.

PbC Type of probe: it allows to set the kind of probe used by the instrument: PbC = PBC probe, ntc

= NTC probe.

onF on/off key enabling: nu = disabled; oFF = enabled; ES = not set it.

dP1 Thermostat probe display

dP2 Evaporator probe display

dP3 Third probe display- optional.

dP4 Fourth probe display.

rSE Real set point: (readable only), it shows the set point used during the energy saving cycle or

during the continuous cycle.

rEL Software release for internal use.

Ptb Parameter table code: readable only.

8. DIGITAL INPUT

(ENABLED WITH P3P = N)

The free voltage digital input is programmable in different configurations by the "i1F" parameter.

8.1 DOOR SWITCH INPUT (i1F = dor)

It signals the door status and the corresponding relay output status through the "odc" parameter: no,

Fan = normal (any change); CPr, F_C = Compressor OFF.

Since the door is opened, after the delay time set through parameter "did", the door alarm is

enabled, the display shows the message "dA" and the regulation restarts is rtr = yES. The alarm

stops as soon as the external digital input is disabled again. With the door open, the high and low

temperature alarms are disabled.

8.2 GENERIC ALARM (i1F = 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.

8.3 SERIOUS ALARM MODE (i1F = bAL)

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

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

activated.

8.4 PRESSURE SWITCH (i1F = PAL)

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

activation of the "nPS" parameter, the "CA" pressure alarm message will be displayed. The

compressor and the regulation are stopped. When the digital input is ON the compressor is always

OFF.

If the nPS activation in the did time is reached, switch off and on the instrument to restart

normal regulation.

8.5 START DEFROST (i1F = dFr)

It starts 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.

8.6 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F = Htr)

This function allows to invert the regulation of the controller: from cooling to heating and viceversa.

8.7 ENERGY SAVING (i1F = ES)

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

(parameter) sum. This function is enabled until the digital input is activated.

8.8 DIGITAL INPUTS POLARITY

The digital input polarity depends on the "i1P" parameter.

i1P=CL: the input is activated by closing the contact.

i1P=OP: the input is activated by opening the contact

9. TTL SERIAL LINE – FOR MONITORING SYSTEMS

The TTL serial line, available through the HOT KEY connector, allows by means of the external

TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU

compatible such as the X-WEB500/3000/300.

10. X-REP OUTPUT – OPTIONAL

As optional, an X-REP can be connected to the instrument, trough the HOY KEY

connector. The X-REP output EXCLUDES the serial connection.

1592020050 XR50CX GB m&M r1.0 12.03.2007.doc

30,0°C/-22÷86°F) it sets

To connect the X-REP to the

instrument the following connectors

must be used CAB-51F(1m), CAB-

52F(2m), CAB-55F(5m),

11. INSTALLATION AND MOUNTING

12. ELECTRICAL CONNECTIONS

The instrument is provided with screw terminal block to connect cables with a cross section up to 2,5

. 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.

12.1 PROBE CONNECTION

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.

13. HOW TO USE THE HOT KEY

13.1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)

Program one controller with the front keypad.

When the controller is ON, insert the "Hot key" and push o key; the "uPL" message

appears followed a by flashing "End"

Push "SET" key and the End will stop flashing.

Turn OFF the instrument remove the "Hot Key", then turn it ON again.

NOTE: the "Err" message is displayed for failed programming. In this case push again o key if you

want to restart the upload again or remove the "Hot key" to abort the operation.

13.2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY

(DOWNLOAD)

Turn OFF the instrument.

Insert a programmed "Hot Key" into the 5 PIN receptacle and then turn the Controller ON.

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

the "doL" message is blinking followed a by flashing "End".

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

Remove the "Hot Key"..

NOTE the message "Err" is displayed 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.

14. ALARM SIGNALS

Message

Cause

"P1"

Room probe failure

"P2"

Evaporator probe failure

"P3"

Third probe failure

"P4"

Fourth probe failure

"HA"

Maximum temperature alarm

"LA"

Minimum temperature alarm

"HA2"

Condenser high temperature

"LA2"

Condenser low temperature

"dA"

Door open

"EA"

External alarm

"CA"

Serious external alarm (i1F=bAL) All outputs OFF.

"CA"

Pressure switch alarm (i1F=PAL) All outputs OFF

14.1 ALARM RECOVERY

Probe alarms P1", "P2", "P3" and "P4" start some seconds after the fault in the related probe; they

automatically stop some seconds after the probe restarts normal operation. Check connections

before replacing the probe.

Temperature alarms "HA", "LA" "HA2" and "LA2" automatically stop as soon as the temperature

returns to normal values.

Alarms "EA" and "CA" (with i1F=bAL) recover as soon as the digital input is disabled.

Alarm "CA" (with i1F=PAL) recovers only by switching off and on the instrument.

14.2 OTHER MESSAGES

Pon

Keyboard unlocked.

PoF

Keyboard locked

noP

In programming mode: none parameter is present in Pr1

On the display or in dP2, dP3, dP4: the selected probe is nor enabled

noA

None alarm is recorded.

15. TECHNICAL DATA

Housing: self extinguishing ABS.

Case: XR50CX frontal 32x74 mm; depth 60mm;

Mounting: XR50CX panel mounting in a 71x29mm panel cut-out

Protection: IP20; Frontal protection: XR50CX IP65

Connections: Screw terminal block ≤ 2,5 mm

Power supply: according to the model: 12Vac/dc, ±10%; 24Vac/dc, ±10%; 230Vac ±10%,

50/60Hz, 110Vac ±10%, 50/60Hz

XR50CX

Instrument XR50CX shall be mounted on vertical panel, in a

29x71 mm hole, and fixed using the special bracket supplied.

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 air circulate by the cooling holes.

Outputs

Compressor output acc. to par. "Con" and

"COF"

Defrost end is timed

Outputs unchanged

Outputs unchanged.

It depends on the "Ac2" parameter

It depends on the "bLL" parameter

Compressor according to rrd

Output unchanged.

wiring.

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