dixell EMERSON XR30C Istruzioni per l'installazione e il funzionamento - Pagina 3

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OTHER

PbC Type of probe: it allows to set the kind of probe used by the instrument: PbC

= PBC probe, ntC = NTC probe.



rEL

Software release for internal use.



Ptb

Parameter table code: readable only.

8. DIGITAL INPUT (IF AVAILABLE)

The free contact digital input is programmable in five 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. 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 SWITCHING SECOND RELAY ON (i1F = LHt)

With oA1= LHt it switches on and off the second relay.

8.6 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.

8.7 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.

8.8 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. INSTALLATION AND MOUNTING

Instrument XR30C shall be mounted on vertical

panel, in a 29x71 mm hole, and fixed using the

special bracket supplied.

To obtain an IP65 protection grade use the front

panel rubber gasket (mod. RG-C) as shown in

figure.

Instrument XR30D shall be mounted on an

omega DIN rail

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.

1592007221 XR30C-D GB r1.0 18.11.2015

10. ELECTRICAL CONNECTIONS

The instrument is provided with screw terminal block to connect cables with a

cross section up to 2,5 mm

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.

10.1 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.

11. HOW TO USE THE HOT KEY

11.1 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.

11.2 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.

12. ALARM SIGNALS

Message

"P1"

Room probe failure

"HA"

Maximum temperature alarm

"LA"

Minimum temperature alarm

"dA"

Door open

"EA"

External alarm

"CA"

Serious external alarm (i1F=bAL)

"CA"

Pressure switch alarm (i1F=PAL)

12.1 ALARM RECOVERY

Probe alarm "P1" starts some seconds after the fault in the related probe; it

automatically stops some seconds after the probe restarts normal operation.

Check connections before replacing the probe.

Temperature alarms "HA" and "LA" automatically stop as soon as the thermostat

temperature returns to normal values and when defrost starts.

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.

XR30C – XR30D

. Before connecting cables make sure the power

Cause

Compressor output according

to par. "Con" and "COF"

Outputs unchanged.

Regulation restarts

Output unchanged.

All outputs OFF.

All outputs OFF

Outputs

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