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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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