User Instructions Ultra Low Temperature Freezers Model LAB/ULT

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

Elcold Frysere Hobro ApS

Løgstørvej 81 Hørby 9500 Hobro Denmark

Phone +45 9657 2222 Fax +45 9852 4685

Email [email protected] www.elcold.com

i.c. graphics cph

User Instructions

Lab* Frost

Ultra Low Temperature Freezers Model LAB/ULT

SAFETY INFORMATIONS

The LAB/ULT freezers contains environmentally friendly but flammable refigerants. It means danger of explosion if for any reason the refigerants are allowed to escape from the system.

The refigeration system must never be accessed by unauthorized personal.

When transporting and installing the unit, ensure that no part of the tubing system is damaged.

If the tubing is damaged and leak occurs, avoid any ignition sources and naked flames near the unit, and ventilate the room immediately.

In order to avoid formation of flammable gas/air mixtures an case of a leak from the refigeration system, the room where the unit is placed must have a volume of minimum 40 m3 corresponding to a surface area of approx. 4 m2 in a room with normal ceiling height.

WARNING!!!

The ventilation openings must never be covered or blocked.

Never use a stream or water cleaning device during cleaning or defrosting on order to avoid short circuits in the electrical system.

Do not place any electrical devices in the freezer.

Products containing flammable gasses and explosives must not be stored in the freezer.

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

2

USER INSTRUCTIONS

Congratulations on your new low temperature freezer. We trust that it will serve you for many years to come. In order to gain optimum benefit from your freezer, please read the following instructions thoroughly and act accordingly. The low-temperature freezers are used for freezing and long-term storing of food products, medical preparations ( vaccines, blood plasm, ect.) and other biological products.

1. Environmental protection and disposal.

The packaging is designed to protect the appliance and its components during transportation, and it is made of recyclable materials.

• Please return the packaging to an

official collection point for recycling.

• Old appliances contain reusable

materials and should not be disposed

of together with household refuse.

• Remove the spring-action hinges from

the appliance, in order to prevent

children from being entrapped in the

appliance.

• Ensure that no part of the refrigeration

tubing is damaged as the refrigerant

in the appliance risks escaping to the

environment.

• Information about refrigerant type

and amount will be found on the type

plate on the rear of the appliance

(Fig. 1).

2. Safety instructions.

• In order to prevent injuries and or

damage to the appliance, it should

be unpacked and set up by min. two

people.

• If upon unpacking the appliance is

found damaged, do not connect to

the mains, but contact the supplier.

Interference with or repair to the

appliance should only be carried out

by authorized personnel, in order to

avoid any injuries. (contact the sup-

plier for further information).

• Never put naked flames or other igni-

tion sources inside the appliance.

GB

• Never touch the freezers interior or

products in the freezer when the

freezer is operating. Use gloves or alike

in order to avoid injuries (frost-bite).

• Keep the key to the appliance away

from the appliance and out of the

reach of children.

3. IMPORTANT NOTE !!!

The type of refrigerant in the –85°C

freezers, is a mixture of different

flammable hydrocarbons.

These freezers are designed and

tested according to the EN 378 stan-

dard, under clause A3 room and L3

refrigerants, this means that the

volume of the room where the freezers

is placed must have a volume of mini-

mum 40m

3

corresponding to approx.

4m

2

in a room with a normal floor

height.

4. Connection to the mains.

• For safety reasons the appliance must

be earthed. If you are in any doubt,

please contact an authorized electri

cian.

• The appliance should be left for 5

hours before it is connected to the

mains. If the appliance is connected

before that, there is a risk of damaging

the compressor.

• If for any reason the appliance is

disconnected from the mains, please

wait 10 minutes before re-connecting.

The electronic starting device needs

this time to cool down, before a safe

re-start can be made.

5. Before use.

• Before use, the interior of the appli-

ance should be cleaned with a mild

soap solution, and wiped off with a dry

clean cloth. Never use any kind of

solvent or other chemicals.

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

6. Setting up the freezer.

The freezer should not be placed where it might be splashed with water, in extreme high humidity or in direct sunlight. Any of these factors may lead to a reduction in performance and shorten the life span of the components. The freezer should be placed on a horizontal level, and should not be placed close to a heating appliance or heating tubes. Allow a minimum of 50mm

(2”) clearance on the side and the back.

The side with the ventilation grill should have a clearance of at least 100 mm (4”) in order to allow the heat from the compressor motor to dissipate. Underneath the appliance there should be a gap of 15 mm approx. (1⁄2”). On a soft surface, e.g. carpet, it may be necessary to ensure the correct distance by means of spacers.

7. Electrical supply.

The electrical supply should always be in accordance with the rating plate on the back of the freezer.

The supply must always be in accordance with the law and regulations regarding electrical safety, if any doubts contact your supplier. there is an electricity supply to the plug or if the fuse is blown. If not please go to trouble shooting page 6. 18.

9.Operating the freezer

The empty freezer should be switched on for at least 5-6 hours prior to loading of the freezer. The freezer should not be loaded above the inside walls which is also the load line limit.

Please note: After the lid has been opened, there will be a vacuum created inside the freezer due to the low temperatures. Wait a few minutes before trying to reopen the lid otherwise the handle could be damaged.

10.Defrosting.

In order for the freezer to work to its maximum efficiency the cabinet should be defrosted when a approx. 2mm thick ice layer has formed inside the cabinet.

The ice layer is easily removed with a plastic or wooden scraper. Never use a sharp metal

object which might will cause damage to the inner liner.

The defrosting frequency is determined mainly by two factors the usage pattern

(number of lid openings) and the relative humidity. Excess water can be drained out by using the drain water outlet on the front of the freezer.

Fig. 1

8. Starting Up.

In case the compressor does not start when the freezer has been plugged in, the electrical supply may not be in order. Check if

11.Cleaning.

Cleaning should be done when needed.

When used in a dirty environment it might be necessary to remove the compressor compartment grill, and clean the compressor compartment eventually with a vacuum cleaner.

If the cleaning process is neglected there is a risk that the performance of the freezer will be effected, and even damage to the

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

4

compressor could occur due to overheating.

12. Storage.

If the freezer is stored for a period of time, the lid should be kept open for free circulation of air inside the cabinet in order to avoid corrosion of the inner liner.

13. Temperature control LAB/ULT- freezers.

The temperature inside the freezer is controlled by the electronic controller in the front grill. The controller has a digital readout of the temperature inside the cabinet. and the option of changing the temperature inside the cabinet.

14. External voltage and temperature alarm.

Optionally the freezer can be equipped with a battery operated alarm box with connections for external alarm for voltage failure and temperature alarm. The battery should be exchanged every two years.

Please note! When commissioning the freezer, the battery must be turned into its correct position. More details on page 17.

15.Dixell controller.

16. Functions.

How to see the set point:

1.Press and immediately release the SET key, the display will now show the set point value.

2.Press and immediately release the SET key or wait for 5 seconds to display the probe value again.

How to lock and unlock the keyboard

1.Press the up and down keys simultaneously for more than 3.seconds.

How to change the set point

1.Press the SET key for more than 3.seconds to change the set point value.

2.The set point value will be displayed and the LED starts flashing.

3.To change the set point value, push the up or down arrow.

4. To memorise the new setting press the SET key again or wait 15 seconds for the controller to return to normal display of the probe temperature.

17. Setting the controllers offset value

The LAB/ULT freezer is designed for long time and safe storage of sensitive products.

In some situations the LAB/ULT freezer is also used for other applications like in laboratories for different low temperature test.

Depending on the actual situation it might be necessary to change the controllers offset value in order to get a correspondence between the reading on the display and the actual temperature inside the cabinet.

The factory setting is an offset of 2 dgr:C.

The offset can be adjusted in the following way.

Unlock the keyboard.

Enter the programming mode by pressing the SET and arrow down keys for 3 seconds.

Select the parameter “Opb” by pressing arrow up or down key.

Press the SET key to display its value.

Use arrow up or down to change its value.

The offset can be adjusted to +/- 12 dgr .C

Press SET to store the new value.

Press SET + arrow up or wait 15 seconds without pressing any key. The new value will now be stored.

For more detailed information about programming the Dixell controllers please consult the attached manuals.

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

18. Trouble shooting.

The appliance is not operating. Please check:

Is the electrical plug connected to the mains (wall socket)? Has the fuse blown?

The temperature inside the appliance is too high. Please check:

Is the Dixell controller set to the correct temperature?

Has an excess amount of ice formed inside the appliance?

The appliance is operating continuously.

Please check:

Is the ambient temperature very high?

Has the appliance recently been loaded with a large amount of warm products?

If you have checked the above points and the appliance is still not working as expected, please contact your local dealer for further advice.

19. LN 2 or LCO 2 back-up

On the rear side of the cabinet there is a label and a marking, where it is possible to insert either a temperature probe or a backup LN2 or LCO2 supply.

The inner and outer skins are pre-drilled.

IMPORTANT NOTE !!!

Do not attempt to drill or in other way make access to the freezers interior other places than at the marking, there is a risk of damaging the freezers tubing system, resulting in a leakage with inflammable gasses.

Back-up inlet

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

6

DIXELL XT111C FOR LAB/ULT MODELS

XT111C

Single Stage Digital Controller

For Temperature

GENERAL WARNING

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 de

scribed hereunder. It cannot be used

as a safety device.

• Check the application limits before

proceeding.

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 at-

mospheric humidity to prevent forma-

tion of condensation

• Warning: disconnect all electrical con-

nections before any kind of mainte-

nance

• The instrument must not be opened.

• In case of failure or faulty operation

send the instrument back to the dis-

tributor 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.

GENERAL DESCRIPTION

The XT110C and XT111C are single-stage

ON/OFF controllers for temperature, humidity and pressure applications with direct or inverse action, user-selectable.

The analogue input type can be set by parameter between the following, according to the model:

- PTC, NTC;

- PTC, NTC, Pt100, Thermocouple J, K, S;

- 4÷20mA, 0÷1V, 0÷10V.

FIRST INSTALLATION

Probe setting

The pre-set probe type is written on the label of the instrument, see picture. If it is different from theprobe that has be used, set the probe following procedure below

How to set the probe.

1. Enter the programming menu by

pressing the SET+ n for 3s.

2. Select the Pbc (Probe configuration)

parameter and push the SET key.

3. Set the kind of probe:

a. Controller for temperature: Pt=

Pt100, J = J thermocouple, c = K

thermocouple, S = S thermocouple;

Ptc = PTC; ntc = ntc

b. Controller with current or

voltage inputs: cur=4÷20mA, 0-

1= 0÷1V, 10= 0÷10V

4. Push the SET key to confirm it.

5. Switch the controller off and on again

NOTE: Before proceeding check and, if necessary; set with appropriate values the

Minimum Set Points (LS1 e LS2) and

Maximum Set Points (US1 e US2). See also the paragraphs concerning the programming.

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

Front panel commands

SET:

To display and modify target set point; in programming mode it selects a parameter or confirm an operation.

TO SWITCH THE INSTRUMENT ON/OFF: If the function is enabled (par. onF=yES), by pressing the SET key for more than 4s the controller is switched OFF. To switch the instrument on again press the SET key.

o UP: in programming mode it browses the parameter codes or increases the displayed value.

Hold it pressed for a faster change

n DOWN: in programming mode it browses the parameter codes or decreases the displayed value. Hold it pressed for a faster change

KEY COMBINATIONS:

o + n To lock & unlock the keyboard.

SET + n To enter in programming mode.

SET + o To return to the room temperature display.

Use of LEDS

A series of light points on the front panels is used to monitor the loads controlled by the instrument. Each LED function is described in the following table.

FUNCTION LED

LED

1

LED

2

E.S.

MOD

E

ON flashing flashing

ON

ON

Output relay enabled

- Programming Phase (flashing with LED2)

- Programming Phase (flashing with LED1)

Energy saving activated by digital input

- ALARM signal

- In “Pr2” indicates the parameter is also present in

“Pr1”

TO see THE SETPOINT

SET 1. Push and release the

SET

key to see the Set point

value;

2. To come back to the normal

display push again the SET key

or wait 10s.

TO CHANGE THE SETPOINT

SET 1. Hold pushed the SET key

for 3s to change the Set

point value;

2. The value of the set point will

be displayed and the LED1 & 2

start blinking;

3. To change the Set value push

the o or n arrows within 10s.

4. To memorise the new set point

value push the

wait 10 s.

SET key again or

TO enter the parameters list “Pr1”

To enter the parameter list “Pr1” (user accessible parameters) operate as follows:

SET

1. Push for 3s the SET + n keys

(LED1 & 2 start blinking).

2. The controller will display the

first parameter present in the

Pr1 menu..

TO ENTER the parameters list “Pr2”

The “Pr2” parameter list contains the configuration parameters. A security code is required to enter it.

1. Enter the “ Pr1” level, see above

paragraph.

2. Select “Pr2” parameter and

press the “ SET” key.

3. The “ PAS” flashing message is

displayed, shortly followed by

0 - -” with a flashing zero.

4. Use o or n to input the security

code in the flashing digit; con

firm the figure by pressing “ SET”.

The security code is “321”.

5. If the security code is correct

the access to “Pr2” is enabled

by pressing “ SET” on the last

digit.

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

8

Another possibility is the following:

After switching ON the instrument, within 30 seconds, push SET + n keys together for 3s: the Pr2 menu will be entered.

HOW TO MOVE A PARAMETER FROM THE

“PR2” MENU TO “PR1” AND VICEVERSA.

Each parameter present in “ Pr2” MENU can be removed or put into “ Pr1”, user level, by pressing “ SET + n”.

In “Pr2” when a parameter is present in

Pr1” the LED is on.

HOW TO CHANGE a parameter

To change a parameter value operates as follows:

1. Enter the Programming mode

2. Select the required parameter.

3. Press the “SET” key to display its value.

4. Use “UP” or “DOWN” to change its value.

5. Press “ SET” to store the new value and

move to the following parameter.

TO EXIT: Press SET + UP or wait 15s without pressing a key.

NOTE: the set value is stored even when the procedure is exited by waiting the timeout to expire.

HOW TO LOCK THE KEYBOARD

1. Keep pressed for more than 3 s the the

o and n keys.

2. The “POF” message will be displayed

and the keyboard will be locked. At this

point it will be possible only to see the

set point or the MAX o Min temperature

stored

3. If a key is pressed more than 3s the

“POF” message will be displayed.

TO UNLOCK THE KEYBOARD

Keep pressed together for more than 3s the the o and n keys, till the “Pon” message will be displayed.

ON/OFF function

TO SWITCH THE INSTRUMENT ON/OFF:

If the function is enabled (par. onF=yES), by pressing the SET key for more than 4s the controller is switched OFF. To switch the instrument on again press the SET key.

PROBES AND MEASURING RANGE

Pro be

NTC -40˚C/-40˚F

PTC

Pt10

0

TcK

TcJ

TcS

Down Scale

-50˚C/-58˚F

-200˚C/-328˚F

0˚C/32˚F

0˚C/32˚F

0˚C/32˚F

Full Scale

110˚C/230˚F

150˚C/302˚F

600˚C/1112˚F

1300˚C/1999˚F

600˚C/1112˚F

1400˚C/1999˚F

List of Parameters

REGULATION

Hy1

Differential: (-Full Sc. / Full Sc.) Intervention differential for set point. It can be set with positive value or with negative value.

The kind of action (direct or inverse) depends on the S1C parameter (in or di).

LS1

Minimum set point: (Down Sc.÷ Set) Sets the minimum acceptable value for the set point.

US1 Maximum set point: (Set÷ Full Sc.) Sets the maximum acceptable value for set point.

S1C

Action type: S1C=in inverse action (heating/ humidifying/increase pressure);

S1C=dir

direct action (cooling /dehumidifying/decrease pressure).

AC

Anti-short cycle delay: (0÷250 sec) Minimum time between the switching off and the following switching on

on

Minimum time a stage stays switched ON

(0÷250 sec)

ono:

Minimum time between 2 following switching

ON of the same load (0÷120 min).

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

ALARMS

ALC

Temperature alarms configuration: it determines if alarms are relative to set point or referred to absolute values.

rE relative to set point; Ab absolute temperature

ALL

Minimum alarm:

with ALC=rE: relative to set point, (0÷|Down

Sc.-Set|) this value is subtracted from the set point. The alarm signal is enabled when the probe values goes below the “SET-ALL” value.

with ALC=Ab absolute value, minimum alarm is enabled when the probe values goes below the “ALL” value.

ALU

Maximum alarm:

with ALC=rE: alarm relative to set point,

(0÷|Full Sc.-Set|) Maximum alarm is enabled when the probe values exceeds the

“SET+ALU” value.

with ALC=Ab: absolute alarm, (Set÷Full Sc.)

Maximum alarm is enabled when the probe values exceeds the “ALU” value.

ALH

Differential for alarm recovery: (0,1÷Full scale) the alarm recovers when probe value is higher than Alarm value + ALH.

ALd

Alarm delay:(0÷999 min) time interval between the detection of an alarm condition and alarm signalling.

dAO

Delay of alarm at start-up: (0÷23.5h) time interval between the detection of the alarm condition after instrument power on and alarm signalling.

So1

Relay status with faulty probe: So1=oFF open;

So1=on closed.

tbA

Status of alarm relay after pushing a key.

(XT111C only):

oFF = relay disabled; on = relay enabled.

AS

Alarm relay configuration (XT111C only):

cL = 4-6 terminals open with alarm; oP = 4-6 terminals closed with alarm.

PROBES AND DISPLAY

LCI

Start of scale, only with current or voltage

input: (-1999÷1999) Adjustment of read out corresponding to 4mA or 0V input signal.

UCI

End of scale, only with current or voltage

input: (-1999÷1999) Adjustment of read out corresponding to 20mA or 1V or 10V input signal.

oPb

Probe calibration: (-999÷999) allows to adjust possible offset of the probe.

rES

Decimal point ON/OFF: (rES=in OFF; rES=dE

ON; rES= cE with 2 decimal points, only for current or voltage input) select the resolution of the controller.

NOTE: the decimal point selection is not available on models with thermocouple input.

UdM

Measurement unit: it depends on models:

for temperature:°C = Celsius; °F = Fahrenheit.

with 4÷20mA, 0÷1V, 0÷10V input : 0= °C;

1= °F, 2= %RH, 3=bar, 4=PSI, 5=no measurement unit.

PbC

Probe selection: it sets the kind of probe. It depends on models

for temperature NTC/PTC: Ptc = PTC; ntc = ntc.

for temperature standard: Pt= Pt100, J = J thermocouple, c = K thermocouple, S = S thermocouple; Ptc = PTC; ntc = ntc.

with 4÷20mA, 0÷1V, 0÷10V input:

cur=4÷20mA, 0-1= 0÷1V, 10= 0÷10V.

P3F

Third wire presence for Pt100 probe: for using

2 or 3 wires Pt100 probes: no = 2 wires probe;

yES = 3 wires probe.

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

10

DIGITAL INPUT

HES

Set point change during during the Energy

Saving cycle: (Down Sc./Full Sc.) sets the variation of the set point during the Energy

Saving cycle.

i1F

Digital input operating mode:

configure the digital input function:

c-H

= to invert the kind of action: direct reverse;

oFF = to switch the controller off.; AUS = Not used; HES = Energy Saving;

EAL = generic external alarm; bAL = serious external alarm: it switches off the loads.

i1P

Digital input polarity:

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

OP: the digital input is activated by opening the contact

did

Digital input alarm delay: (0÷255 min) delay between the detection of the external alarm condition (i1F= EAL or i1F = bAL) and its signalling.

OTHER

Adr

RS485 serial address (0÷247) identifies the instrument within a control or supervising system.

onF

Swithching ON/OFF enabling from keyboard:

(no = disabled; yES=enabled) It permits the switching ON/OFF of the instrument by pressing the SET key for more than 4s.

Ptb

Parameters table: (read only) Shows the code of the parameters map.

rEL

Software release: (read only)

Pr2

To access the Pr2 parameter programming menu.

Installation and mounting

Instrument XT110C and XT111C shall be mounted on vertical panel, in a 29x71 mm hole, and fixed using the special brackets supplied.

PANEL

BRACKET

(PUSH TO RELEASE)

To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-C) as shown in figure.

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.

Electrical connections

The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5 mm². Before connecting cables make sure the power supply complies with the instrument’s requirements.

Separate the input connection 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.

Serial connections

All models can be connected to the monitoring and supervising system XJ500 using the serial port. The external XJ485 serial module to interface the instrument with the monitoring and supervising system

XJ500 is required.

The standard ModBus RTU protocol it is used.

NOTE: Instruments with current or voltage input and 230V or 115V supply, cannot be connected to the XJ485 serial module.

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User Instructions Ultra Low Temperature Freezers Model LAB/ULT

How to use the HOT KEY

How to program a hot key from the instrument (UPLOAD)

1. Program one controller with the front

keypad.

2. When the controller is ON, insert the

Hot key” and push o key; the “uPL

message appears followed a by

flashing “ End

3. Push “SET” key and the End will stop

flashing.

4. 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.

HOW TO PROGRAM AN INSTRUMENT USING A

HOT KEY (DOWNLOAD)

1. Turn OFF the instrument.

2. Insert a programmed “Hot Key” into the

5 PIN receptacle and then turn the Con-

troller ON.

3. Automatically the parameter list of the

Hot Key” is downloaded into the

Controller memory, the “ doL” message

is blinking followed a by flashing “ End”.

4. After 10 seconds the instrument will restart

working with the new parameters.

5. 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.

digital input

XT110C and XT111C have 1 free contact digital input. It is programmable in 5 different configurations by the “ i1F” parameter.

invert the kind of action: heatingcooling

(I1F = C-H)

This function allows to invert the regulation of the controller: from direct to inverse and viceversa.

REMOTE ON/OFF (I1F = OFF)

This function allows to switch ON and OFF the instrument.

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 deactivated.

serious alarm mode (I1F = 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.

energy saving (I1F = HES)

The Energy Saving function allows to change the set point1 value as the result of the SET1

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

ALARM SIGNALS

Mess- age

“PFo”

“PFc”

“HA”

“LA”

“EAL”

“bAL”

Cause

Probe broken or absence

Outputs

Alarm output ON;

Output according to Parameter “So1”

Probe short circuited

Maximum alarm

Alarm output ON;

Output according to Parameter “So1”

Alarm output ON;

Other outputs unchanged

Minimum alarm

Alarm output ON;

Other outputs unchanged

External alarm Output unchanged

Serious Output OFF external alarm alarm relay status (XT111c)

Status of the instrument

Instrument off

Normal operating

Alarm present

AS = CL

4-6 closed

4-6 closed

4-6 open

AS = oP

4-6 closed

4-6 open

4-6 closed

Silencing buzzer / alarm relay output

Once the alarm signal is detected the buz- zer, if present, can be disabled by pressing any key.

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

12

XT111C: the alarm relay status depends on the tbA parameter: with tbA=yES the relay is disabled by pressing any key, with tbA=no the alarm relay remains enabled as long as the alarm lasts. The display signal remains as long as the alarm condition remains.

Alarm recovery: Probe alarms “PFo”, “PFc” start few seconds after the fault in the probe; they automatically stop few seconds after the probe restarts normal operation. Check connections before replacing the probe. Max. and min. alarms “HA” and “LA” automatically stop as soon as the variable returns to normal values. Alarms “

bAL” and “EAL” recover as soon as the digital input is disabled.

Technical data

Housing:

Case:

Mounting:

Protection:

Frontal protection:

Connections:

Power supply:

Power absorption:

Display:

Inputs:

Relay outputs:

Alarm:

Other output: self extinguishing ABS.

frontal 32x74 mm; depth 60mm; panel mounting in a 71x29 mm panel cut-out.

IP20.

IP65 with frontal gasket RG-C (optional).

Screw terminal block £ 2,5 mm² heat-resistant wiring.

12Vac/dc, ±10% or: 24Vac/dc ± 10% or 230Vac ± 10%, 50/60Hz or 110Vac, ± 10%, 50/60Hz

3VA max.

3 1⁄2 digits, red LED according to the order: NTC/PTC or NTC/PTC /Pt100/Thermo couple J, K, S or 4÷20mA/ 0÷1V / 0÷10V

Load relay SPDT 8(3)A, 250Vac

(XT111C) relay SPDT 8(3)A, 250Vac buzzer (optional)

Kind of action:

Data storing:

Operating temperature:

Storage temperature:

1B; Pollution grade: normal, Software class: A.

on the non-volatile memory (EEPROM).

0÷60 °C (32÷140°F).

-30÷85 °C (-22÷185°F).

Relative humidity: 20÷85% (no condensing)

Measuring and regulation range: according to the probe

Controller Accuracy a 25°C: better than ±0,5% of full scale

CONNECTIONS

XT111C - 230V AC OR 115V AC

Probe: Pt100 = 91-11 (10); Thermocouple

J, K, S = 9(+) -11 (-)

115Vac Supply: 7-8

13

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

P3F

HES i1F i1P did

Adr

OnF

Ptb rEL

Pr2

ALC

ALL

ALU

Lci²

Uci²

OPb rES

UdM

ALH

ALd dAO

So1 tba¹

AS¹

DEFAULT SETTING VALUES

COD Name

S1C

Ac on ono

Set

Hy1

LS1

US1

PbC

Set point

Differential

Minimum set point

Maximum setpoint

Action type output

Anti-short cycle delay

Minimum time a stage stays switched ON

Minimum time between 2 following switching

ON of the same load

Alarm configuration

Minimum alarm (ALC=rE)

(ALC=Ab)

Maximum alarm (ALC=rE)

(ALC=Ab)

Alarm recovery differential

Alarm delay

Alarm delay at start up

Output status with faulty pr.

Alarm relay disabling

Alarm relay polarity

Start scale with current or voltage input

End scale with current or voltage input

Probe calibration

Resolution

Measurement unit

(temp.)

(current/voltage)

Kind of probe

3rd wire presence

Energy saving differential

Digital inputconfiguration

Digital input polarity

Alarm delay for dig. input

Serial adress oFF function enabling

Parameter table

Software release

To access the Pr2

Range

LS1+US1

-Full Sc./Full Sc.

Down Sc./Set

Set/Full Sc.

in=Inverse; dir=directed

0 -250 sec.

0 -250 sec.

0 -120 min.

°C/°F

0

0 in

0

0/32

-1/-2 min max rE=relat.; Ab=absolute

0 +[Start Sc.-Set].

Start Sc.+ALu

0 +[Full Sc.-Set]

ALL+Full scale

0 -Full scale

0 -999 min

0 -23h 50 min oFF=open on=closed no; yES

CL + oP

-1999 -1999

-1999 -1999

-Full Sc./Full Sc.

in=NO; dE=0,1; cE=0,01

°C=°C; °F;

0=°C; 1=°F; 2=HR; 3=bar;

4=PSI; 5=off rE

10.0/ 20

10.0/ 20

PT=Pt100; J=tcJ; c=tck;

S=tcS; Ptc=PTC; ntc=NTC;

0-1=0-1V; 10=0+10V; cur=0-20mA no=2 wires; yES=3wires

Down SC./Full Sc.

c-H/oFF/AuS/HES/EAL/bAL cL=closed; oP=open

0-120 m

0-247 no=not enabled; yES=enabled

Readable only

Readable only

Readable only various no

--

--

321

0.0

EAL cL

0

1 no

2.0/4

15

1.3

oFF yES oP various various

0.0

in various

Pr2

Pr2

Pr2

Pr2

Pr2

Pr1

Pr1

Pr2

Pr2

Pr2

Pr2

Pr1

Pr2

Pr1

Pr1

Pr2

Pr2

Pr2

Pr2

Pr2

Pr2

Pr2

Pr2

Pr2

Pr1

Lev

Pr2

Pr2

Pr2

Pr2

-

Pr1

Pr2

Pr2

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

14

Factory settings LAB/ULT models.

Dixell XT111C

Settings

230V 50Hz

Description

Regulation

Set point

Different (Hysteresis)

Minimum set point

Maximum set point

Action type output 1

Anti-short cycle delay

Minimum time a stage stays switched on

Minimum time between 2 following switching ON of the same load

Alarm and safety

Alarm configuration

Minimum alarm

Maximum alarm

Alarm recovery differential

Alarm delay

Alarm delay at start up

Alarm relay disabling

Alarm relay polarity

Out1 status with faulty pr.

Other

Probe calibration

Resolution

Measurement unit (temp.)

Kind of probe

3rd. wire presence

Energy saving differencial

Digital input configuration

Digital input polarity

Alarm delay for dig. input oFF function enabling

Label

Set

Hy1

LS1

US1

S1C

Ac on ono i1F i1P did

Adr

OnF

Opb rES udM

Pbc

P3F

HES

ALC

ALL

ALU

ALH

Ald dAO tbA

AS

So1

-60 dir

0

-80

3,0

-87

0

0

EAL cL

0

1

NO

2

De

C

Pt

YES

0 re

3,0

10,0

2,0

5

8,0 on

OP

OFF

Technical specifications:

LAB/ULT 11 ULT/LAB 11 31 ULT/LAB 31 41 ULT/LAB 41

Ambient temperature

Net volume

Net volume

Height with 50 mm castors

Height with open lid

Width

Insulation thickness

Depth excl. handle and hinges

Inner dimensions (HxDxW)

Power consumption at +25˚ C

Fuse

Temeprature range

Noise level

Weight

Pull down from +25˚ C

Ambient temp. -85˚ C, (Empty box)

Maximum Freezing Capacity per. 24H mm mm

Watts

A

˚C dBa kg

Hours

˚C litres cu. ft.

mm mm mm mm kg.

+15˚ to +30˚

130

4,6

920

1620

720

100

730

650x450x520/320

430

10

-60˚ to -85˚

< 51

53

4

5

+15˚ to +25˚

300

10,6

920

1620

1300

100

730

650x450x1100/900

540

10

-60˚ to -85˚

< 51

78

5

7

BEWARE OF THE FREEZING CAPACITY SEE TECHNICAL SPECIFICATIONS

THIS FREEZER IS NOT A BLAST-FREEZER IT IS ONLY FOR STORAGE.

+15˚ to +25˚

360

12,7

920

1620

1500

100

730

650x450x1500/1300

580

10

-60˚ to -85˚

< 51

95

5

9

15

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

Wiring diagrams

Censor

Power supply

230V

50/60 HZ

Thermostat

Power supply

Out ext.

Alamm

Censor

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

16

Power supply

230V

50/60 HZ

Thermostat

Power supply

Out ext.

Alamm

17

User Instructions Ultra Low Temperature Freezers Model LAB/ULT

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