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MIC QKL mini 2
Temperature control
For the benefit of the customer
In harmony with the environment
Cooling system intelligence
Management Information Control (MIC)
Cool Expert
Entwicklungs GmbH
Besenacker 14
D-35108 Allendorf (Eder)
Phone +49 (0) 6452 9290 0
Fax +49 (0) 6452 9290 290 e-mail [email protected]
Internet www.cool-expert.de
Rev2.r19.x.38-1.2a-en
Installation and operating manual
Cooling controls from Cool Expert have the highest internationally Defrost detection: recognized level of automation. The MIC QKL mini cooling control is the product of consistent further development of the KÜBATRON QKL 2B/T multifunction control, which also originated from the innovative genius of
Cool Expert. The MIC QKL mini 2 is the ideal solution for all your needs in commercial refrigeration. The mini is particularly impressive in its easy
!
Adaptive Dynamic Detection (ADD) The defrost detection takes place at the best time in terms of energy according to the performance measurement principle.
Two sensors (air inlet and cooler block temperature) are required for ADD. A defrost process is automatically initiated if the cooler experiences a reduction in performance of more than 5% due to frost and ice formation.
operation and versatility of use in chest refrigerators and freezers as well as in cold rooms and freezer rooms. The MIC QKL mini 2 is a self-optimizing control with autoadaptive defrost detection at the best time in terms of energy. If the line for the temperature sensors is extended, compensation of the resistance is done automatically by means of the three-wire measurement technique even over longer distances. All setting and adjustment work can basically be dispensed with. A refrigeration system equipped with MIC QKL mini 2 is permanently controlled and monitored by a knowledge-based algorithm without any interruption. The algorithm detects changes in the operating conditions and guides the currently most efficient operating point. The potential energy savings using a MIC QKL mini 2 have been proven to be at least 20%, compared to state-of-the-art technology.
!
Load Integral Detection (LID) Defrost detection takes place here similar to the
ADD procedure described above; however, it takes into account the expected average humidity level. In the case of the one-sensor control only LID defrost detection is possible. LID can also be used for the dual sensor control.
Defrost management:
A patented autoadaptive defrost management controls the electric defrost heating, the recirculating air defrosting and the hot gas defrosting. The defrost end temperature is calculated autoadaptively. The heat content of the given defrosting medium is the basis for calculating the defrost end temperature. Drain down time is mandatory after the defrost process has been completed. The defrost end temperature can also be set by hand for electric defrosting.
Room temperature control:
Fault management:
The MIC QKL mini 2 is suitable for control with one or two sensors, depending on the application. With only one temperature sensor in the cooler block as the sole
An autoadaptive early warning system monitors the performance of the coolers and constantly checks the availability of the refrigeration system. A message reference variable, MIC QKL mini 2 performs the same tasks as its predecessor
KÜBATRON QKL 2 B/T. Dual sensor control, combined with the optional network module and a recorder, complies with the hygiene regulation for quality assurance follows in the event of a fault. Up to 14 faults and two messages can be documented in a unique diagnostic system.
Two freely configurable digital inputs can be connected for various tasks: of chilled goods according to HACCP (detection of room temperature using a proprietary sensor provided for that purpose). The dual sensor control is also essential in refrigerated cabinets and in the case of recirculating air defrosting.
Air cooler fan management:
Prior to beginning the actual cooling process, the energy stored in the cooling block (by the formation of frost and ice) is supplied to the cold room by specifically forerunning the fan. This air cooler fan control patented by Cool Expert also became known under the name latent heating. Frost and ice formation on the fins of the air cooler are reduced by the effect of sublimation. The defrosting processes are, compared to state-of-the-art technology, reduced considerably. Another benefit of the sublimation effect lies in the fact that the goods that are chilled lose
Adjustable switch-off time and switch-on temperature of the cooling plant when the door is open, adjustable increase or decrease of the setpoint with or without defrost suppression, external defrost suppression or external defrost request, external standby in case of load throw-off, cooling request or if the defrost locking mechanism is in effect, for example.
Communication:
Optional network module as a communication interface for data transmission in both directions.
less moisture. The relative air humidity is increased by at least 10%. In order to prevent water drops from breaking away, the start of the cooler fan is time-delayed after each defrosting process.
1
Setpoint temperature adjusting range
Switching hysteresis
Control accuracy
Supply voltage
Ambient temperatures
LED display
Measuring range
Resolution
-50 to 50 °C / -58 to 121 °F, in increments of
0.1 K/0.5 °R
± 0.5 K / 0.9 °R adaptive from setpoint
± 0.3 K / 0.7 °R from setpoint
24 V ± 20 % AC/DC 3 VA in storage -50 to 70 °C / -58 to 158 °F during transport -50 to 70 °C / -58 to 158 °F in operation -20 to 55 °C / - 4 to 131 °F
7- segment display with 7 function messages
-60 °C / -76 °F to 60 °C / 140 °F
0,1 K / 0,5 °R
Technical Specifications
Sensors
EMV Specification
Software class
Outputs
Inputs
Protection class II
Connecting terminals
Communication
2 x MIC Sensor Pt1000 for three-wire measurement technique for industrial use according to EN50081-1 and
EN50082-1
Class A
4 relay outputs, 3 NO contact, 1 changeover switch, max. switching capacity 8(3) A 250 V AC
2 digital inputs, contact current > 2 mA, shading only by means of potential-free contacts when installed properly terminal screws with lifting system 4 mm²
Optional network module
Safety and work instructions
General safety instructions:
Cool Expert shall not under any circumstances assume liability or responsibility for damage resulting from improper installation or use of the control or accessories.
Functional warranty only in connection with sensors from Cool Expert (MIC
Sensor Pt1000).
The control is not limited to certain heat transfer media and can be used in direct expansion, CO , pump operation, NH and dual-circuit refrigeration systems.
Emergency programs provided in the control protect valuable chilled goods in the event of a fault. Even in the case of total failure of both sensors, an emergency running function for the cooler fan and cooling request is maintained depending on the setpoint temperature.
Appropriate safety devices, which switch off the system components connected to the control in the event of a fault, have to be provided.
One MIC QKL mini 2 control and a maximum of three air coolers
For smaller refrigeration systems with an overall refrigerating capacity of up to 6 kW, a maximum of three air coolers installed in one room can also be operated in parallel with one MIC QKL mini 2 multifunction control. In the case of electric Never attempt to open or repair the MIC QKL mini 2 control.
Observe the local and national standards and regulations when installing the MIC
QKL mini 2 control.
The MIC QKL mini 2 is supplied with a protective low-voltage of 24 V AC/DC. The transformer required for this must comply with EN 61558-2-6 or EN 61558-1.
energy if the cooling process begins immediately after its cooling request and is also ended again by the MIC QKL mini 2. An incorrectly set vacuum or overpressure switch results in problems in defrost detection. The cooling process
Work instructions:
Electrical installation
Prior to beginning all work on the MIC QKL mini 2 control, disconnect the device from the mains and secure it from switching on again inadvertently!
As a matter of principle, electrical installations are to be carried out by authorized
If the maximum defrost time of one hour is exceeded in the event of a fault and the calculated defrost end temperature is not reached, the control will switch to specialist companies only. The VDE 0100/0700 and DIN 8975 Part 7.33 as well as the regulations of the local electricity supplier and all other safety and protection regulations, including the performance specifications of the components connected, must be observed.
Defrost suppression
It is possible to suppress the defrost processes via the digital inputs. After
A separator with a contact opening width of at least 3 mm / 0.12 in must be fitted at cancelling the defrost suppression, the next defrost process can be carried out after a minimum of 60 min. has elapsed.
each pole (main and service switch).
cooling request and proceed ist regular control function.
Following the appropriate electrical installation or inspection work, the safety measures must be checked according to the applicable guidelines.
For use in potentially explosive rooms, the applicable guidelines for this must be may be interrupted by the safety chain (vacuum or overpressure switch, etc.) only in the event of a fault.
Exceeding of the maximum defrost time
Power supply and data memory
The data memory of the MIC QKL mini 2 is deleted every time there is a power failure. When power is restored, the control begins a restart with error diagnostics.
Please make sure that there are no interruptions in the power supply and that the observed. The MIC QKL mini 2 control must be installed outside potentially explosive areas.
control is not switched off by external switches, e.g. manual control switches for stoppage. Frequent interruptions to the power supply result in ice build-up on the air cooler.
For electric defrosting, a safety temperature limiter has to be provided for switching off the defrost heating in the irregular case.
Important! Please observe!
General instructions and information on working with the MIC QKL mini 2
The MIC QKL mini 2 works as a self-optimizing multifunction control which saves and evaluates data gathered from its sensors. All functions originating from the defrosting, all the coolers have to be equipped with a safety temperature limiter.
Requirement for correct defrost detection
The MIC QKL mini 2 can only initiate a defrost process at the best time in terms of
Uncontrolled intrusion of warm air through openings in the wall, ceiling, floor or drains must be avoided in refrigerated units. Therefore, condensate drains must be equipped with a siphon and additionally heated when operating at sub-zero temperatures.
MIC QKL mini 2, such as cooling request, air cooler fan management and defrost, must be executed and ended by the control without any restrictions. The above-
Positioning of the sensors TL1 and TBL
See installation manual "MIC Sensor Pt1000".
mentioned functions must neither be bridged nor interrupted by components from other manufacturers. Interruptions to the control functions listed above are assessed by the MIC QKL mini 2 as a fault.
Housing and dimensions:
Mounting
Cut-out size
Protection rating
Front panel installation with tension frame
71x29 mm 72.8x1.14 in (for front panel installation) according to EN60529 : Front IP 65 (fitted), housing IP 20
75
34
Installation and connection
Installation instructions:
Protection rating lP65
The user interface of the control in the outside area of the door is designed for protection rating IP 65. The rest of the housing complies with the provisions of IP
20. To assure the protection rating of the control in the outside area of the door, the cutout must be made to fit precisely for the purpose of fitting it into the control cabinet door. The cut-out must be fully deburred. The plastic housing must not be deformed from an incorrectly made cutout. The door surface must be flat and have no unevenness. The wall thickness of the door should be at least 0.75 mm / 0.03 in.
Prior to fitting the control, check that the seal between the installation frame and control cabinet door is inserted without any twisting. The tension frame pulls the control evenly from the inner side of the door against the outer side of the door with the necessary initial tension and fastens it.
When fitting the control, make sure that there is secure isolation from the other modules in the control cabinet (according to VDE 0106, Part 101).
28 3 50
70
2
Electrical connection: The power supply of AC/DC 24 V may only be connected to the input terminals 4 and 5 provided for this purpose. Incorrect connection results in immediate destruction of the control.
The digital inputs 1 and 2 and the input terminals 1, 2 and 3, as illustrated here, may only be switched with floating contacts.
External voltage of any kind results in immediate destruction of the control and can lead to fatal injury if disregarded. This also applies to the Pt 1000 sensor inputs
TL1 and TBL, terminals 6 to 10.
TL1 TBL
LED operating status display
!
=
§
$
/
%
&
Fault display
LED off:
LED flashes:
Fault relay “Off“
Fault relay “On“
LED illuminated: Fault confirmed but not cleared (fault relay “Off”)
Cooling request
LED off: Cooling relay "Off"
LED illuminated: Cooling relay "On"
Cooler fan
LED off: Fan relay "Off"
LED illuminated: Fan relay "On"
Defrost request
LED off: Defrost relay "Off"
LED illuminated: Defrost relay "On"
LED flashes: On hold (defrost relay “Off”)
Entry status
LED off: When moving through the menu
LED illuminated: When a menu item is open and the setting is displayed
LED flashes: When a menu item's setting is changed
Operating state for digital input 1
LED illuminated: Floating contact at terminal 1 and 2 closed
Operating state for digital input 2
LED illuminated: Floating contact at terminal 1 and 3 closed
Control buttons
>
<
Control button 1
Move upwards in the menu or increase the value
Control button 2
Move downwards in the menu or decrease the value
Handling and operation
The control is operated using two buttons. The control is set on three main operating levels: the user level, the configuration level and the statistic level.
Within the operating levels, the menu items are shown in the display using abbreviations. The menu items are selected by pressing the control buttons. A selected menu item will show its setting alternately after 5 sec. To change to the other operating level, set the appropriate menu item and press both buttons at the same time.
To make a setting or a change, the selected menu item must be opened by pressing both buttons at the same time. The "Entry Status" LED lights up and the current setting is displayed. Pressing the control buttons allows a setting or change to be made within one of the opened menu items.
A deviation from the last saved setting is shown when the "Entry Status" LED flashes. Pressing both buttons at the same time closes and saves the changed menu item. The "Entry Status" LED is switched off, thus confirming that the setting has been correctly completed. After 5 sec. the new setting is shown alternately with its menu item. After changing from operating level " -2" or " -3" to operating level " -I", the room temperature " tL1 " is automatically shown.
Note:
If an open menu item remains unclosed, it will close automatically after 5 minutes.
The last saved setting remains unchanged. You are automatically taken back to operating level " -I" to the display of the room temperature " tL1 ".
Display and control elements
Starting operation
Initialization of the control:
:888
LED function test
cE3
r19
Device name
Control version
.1
Control subversion
.38
Software version
Display of the configured temperature scale
°C
Configured temperature scale is displayed for a short time
(" °C " or " °F ")
Display of network module identification code
IF3
The identification code of the network module is displayed temporarily. This message is only visible when a network module is installed.
Normal operation after initialization
: 0.5
The room temperature is displayed after initialization
Note:
Alerts detected by the control also remain stored, even in the event of a power failure, and are displayed again when power is restored (fault display LED, alert and buzzer). Alerts can only be deleted under the menu item " ALt " with " cLr ".
If the Power fail control " PFC " is set to " On ", thus switched on, the alert “ PFL ” is displayed when power is restored.
3
Special functions of the control buttons
Defrost initiation (manual)
Press button 1 permanently without interruption until “ dFr ” is displayed in the following routine.
The flashing fault display LED signals that the initiation of a manual cooling request is not possible.
WE Loading the factory setting
>
DF5
...
dFR
Keep button 1 pressed down permanently without interruption
After approx. 3 seconds, the countdown shown left is counted to zero.
Disconnect control from the supply voltage and switch it back on (initiation phase).
Keep control buttons 1 and 2 pressed down permanently without interruption until the following routine " LFP " appears in the display.
The display " dFr " and an acoustic signal of the buzzer confirm the initiation of the manual defrost.
It is not possible to initiate a manual defrost under the following conditions:
Standby by user (" ECt ", " OFF ”), standby by digital input, (" cI1 " or " cI2 ", " Stb ").
The flashing fault display LED signals that the initiation of a manual defrost is not possible under the aforementioned conditions.
Note:
An active defrost can be cancelled with the procedure described above.
Cooling request (manual)
Keep button 2 pressed down permanently until “ COr ” is displayed in the following routine.
>
<
During the starting operation of the control, keep both control buttons pressed down permanently without interruption.
LF5
...
After completing the initiation, the countdown shown left is counted to zero.
LFP
The display " LFP " and an acoustic signal of the buzzer confirm the loading of the factory setting.
Note:
This function can only be performed during the initiation phase after a restart.
During normal operation, the procedure shown here has no effect. It is also possible to load the factory setting in the operating level 2 under the menu item
" rSt " " LFP ".
<
CO5
...
COR
Keep button 2 pressed down permanently without interruption.
After approx. 3 seconds, the countdown shown left is counted to zero.
The display " COr " and an acoustic signal of the buzzer confirm the initiation of the cooling request.
It is not possible to initiate a manual cooling request under the conditions shown below:
Standby of the control by user (" ECt ", " OFF ”), Standby by digital input, (" cI1 " or
" cI2 ", " Stb "), room temperature " tL1 " less than setpoint " tSA ", defrost process active.
-°cool expert
-1-
MIC QKL mini 2
Display of room temperature ( T emperature t L1 ) Alerts
Operating level 1
The operating level
( Al er t s)
tL1
: 0.5
Display of room temperature
(Standard display)
ALT
nO no alerts or possible alerts
Display of the room temperature measured by sensor TL1 . The room temperature can be hidden in operating level 2.1 under "dt ". In this case, " ___ "is displayed. In the event of a sensor fault " ES1 ",
“ ---" is displayed alternately with " ES1 ”.
See note under " tbL ”
Display of block temperature ( T emperature Bl ock)
Alert
cLr current alert(s)
Clearing the current alert by pressing the control button simultaneously
Note:
A detailed description of the MIC QKL mini 2 alerts can be found on the last page of this document
Control On / Off (Standby) ( E nable C on t rol)
tbL
: 7.3
Display of cooler block temperature
Display of the cooler block temperature measured by sensor TBL . In the event of a sensor fault “ ES2 "
" ---" is displayed.
ECT
WE
On
OFF
Controller in the operating mode "On”
Controller in the operating mode "Off”
Information on temperature measurement " tL1 " and " tbL ":
The temperature is measured according to the principle of the three-wire measurement technique. In the case of an extension of the sensor wires, the resistances are compensated for by the three-wire measurement technique. If wire leads are missing, the sensors TL1 or TBL can also be connected according to the principle of the two-wire measurement technique. Resistances which inevitably distort the measurement result can be compensated in the operating level "
-2.1-
" under " oL1
" or under " oL2 " by the entry of a correction factor.
Operating mode “Off” (
OFF
):
All control functions are switched off (standby). The message "
UCH
" refers to the standby of the controller.
If no other entries are made, the current room temperature is displayed alternately with " UCH " after 5 minutes.
To the configuration level (operating level 2)
Display of current setpoint temperature ( T emperature S etpoint A ctual)
-2-
or
cS The first menu item after changing to the configuration level (if no password is provided)
tSA
: 5.0
Display of current setpoint temperature
0 Request to enter password with a value from 0 to 999
Note:
The setpoint value can be increased or decreased by connecting a correspondingly configured digital input. In this case, the current setpoint temperature is displayed. After cancelling the connection, " tSA " and " tSr " display the same value.
Setpoint temperature setting ( T emperature S etpoint R eference)
Note:
If the display “ -2” flashes alternately with the display “ - 1 ” a password is possibly provided. The password is entered or cancelled in the operating level " -2" under " P__ ". When requested to enter a password, enter a numerical combination and then press both control buttons at the same time.
If the wrong password is entered, the display changes immediately to the room temperature " tL1
".
The password can be entered as many times as required.
To the Statistics Level (operating level 3)
WE
tSr
: 0.0
Setting the setpoint temperature
Value: -50 °C / -58 °F to 50 °C / 121 °F
-3-
tH1 The first menu item after changing to the statistics level (operating level 3)
Note:
In the case of recirculating air defrost under " cd ", " FAn " and a setpoint temperature lower than 0 °C /
32 °F, alert " EUS " is displayed
WE Factory setting
(All temperature values of the factory setting are indicated in Celsius) 4
-°cool expert
-2-
MIC QKL mini 2
Operating level 2
The configuration level
Control mode (Sensors & defrost detection) ( C onfig S ensors) drain down time, the defrost request LED flashes. The cooling process starts when the drain down time has finished. The start of the fan is time delayed depending on the setpoint temperature as described in the standard fan management under “ Std “.
cS
WE
dSL
dSC
SSC
Dual sensor control load integral
( D ual S ens Control L ID)
Dual sensor control adaptive
( D ual S ens C ontrol)
Single sensor control
( S ingle S ens C ontrol)
Defrost end temperature ( C onfig D efrost E ndtemperature)
Parameter is only valid in conjunction with “ cd ”, “ HGE ” or “ cd ”, “ HGS ” or “ cd ”, “ EL ”
Dual sensor control load integral ( dSL
)
Method for defrost detection by specifying a humidity level between 25 and 100%. (See setting under
" cSL
" from 25 to 100%) In the control mode " dSL
", both sensors
TL1
and
TBL
must be connected.
cdE
10.0
Adjustable value: 2 - 50 °C / 35,5 - 121 °F
Adaptive calculation of defrost end
WE
Std temperature
Dual sensor control adaptive ( dSC )
The defrost detection is carried out adaptively here, at the energetically optimum time. In the control mode " dSC ", both sensors TL1 and TBL must also be connected. Always observe the work instruction "Requirement for correct defrost detection".
The menu item " cdE " has a dual function.
On the one hand, a defrost end temperature from 2 - 50 °C / 35.5 - 122 °C can be set under " cdE ".The precondition for setting the defrost end temperature is the configuration of the electric defrost "
EL
" under " cd
“.
Single sensor control ( SSC )
Single sensor control: The control of the room temperature as well as the defrost detection and defrosting control takes place solely by means of the cooler block sensor TBL . The humidity level under " cSL
" must be predefined from 25 to 100% for defrost detection.
Note:
If residual ice is detected on the surface of the cooler block after a long period of operation time, this can be due to system-related causes. In this case, check to make sure that the expansion valve is set correctly (evaporator superheat), the system has sufficient refrigerant and the cooler block sensor
TBL
is positionated according to the installation manual MIC Sensor Pt1000. This list could be continued arbitrarely. The controller can be configured to the control mode " dSL " in order to increase the sensitivity of the defrost detection.
On the other hand, the calculated defrost end temperature can be adjusted downwards under " cdE " if one of the two hot gas defrost modes " HGS “ or " HGE " is configured under " cd ". The adjustment is made within the scale from 2 to 50 °C / 35.5 to 122 °F with the values from 2 to 10°C / 35.5 to 50 °F.
The cooler block temperature and the period of the defrosting process are used for calculating the defrost end temperature. This means: hot gas with high heat content = short defrosting process with high defrost end temperature max. = 30 °C / 86 °F. Hot gas with low heat content = long defrosting process with low defrost end temperature min. = 10 °C / 50 °F. The correction value 10 has the least influence on the adaptively calculated defrost end temperature. The value 2 has the greatest influence if the adaptively calculated defrost end temperature should be adjusted downwards .
Adaptive calculation of defrost end temperature ( Std )
The defrost end temperature is calculated adaptively by the controller itself. It is calculated depending on setpoint temperature, amount of frost/ice and the power of the defrost heating.
Defrost load pre-selection ( C onfig Defro s t L oad)
Defrost period ( C onfig D efrost P eriode)
Parameter is only valid in conjunction with “ cS ”, “ dSL ” or “ cS ”, “ SSC ”
Parameter is only valid in conjunction with “ cd
”, “
HGE
” or “ cd
”, “
HGS
” or “ cd
”, “
EL
”
WE cSL 75 Medium humidity level value:
25 to 100%
cdP
30
Std
WE
Adjustable defrost period: 5 - 50 minutes allowing for the defrost end temperature
Adaptive defrost period determination
The expected humidity level has utmost priority for determining this value. The greater the value, the more sensitive the defrost detection.
Defrost management ( C onfig D efrost)
cD HGE
HGS
FAn
WE
EL
Hot gas defrosting in multicompressor racks
(H ot G as e xtended)
Hot gas defrosting in refrigerating plants
(H ot G as S ingleplants)
Recirculating air defrost
(Fan Defrost)
Electric defrosting with adaptive defrost end temperature (El ectric)
Hot gas defrosting in multicompressor racks/central refrigeration plants ( HGE )
The cooling process is interrupted, the defrost relay switched on, the fan is controlled as configured under " cFA ". At least two coolers of double output must be in cooling mode during the defrosting process regardless of the setpoint temperature in order to supply a cooler with hot gas for the purpose of defrosting. The task described above can be implemented individually by the corresponding configuration of the digital inputs " cI1
"or " cI2
", as shown under the menu item defrost communication " dLC ".
Hot gas defrosting in refrigerating plants (
HGS
)
The hot gas defrosting is initiated as in the previous case of multicompressor racks. After an integration period for carrying out the pressure compensation, the compressor is switched on to supply the hot gas. After the defrost end temperature has been reached, the compressor is switched off. During the following drain down time*, the controller switches off the defrost relay, by means of a time delay, and switches the compressor on at the end of the drain down time*.
Adjustable defrost period
The defrost period can be set from 5 to 50 minutes. In contrast to timed defrosting procedures, the pre-defined defrost end temperature under " cdE " is included. The set value is a reference value. The actual defrost period is based upon the heating output and the ice buildup of the cooler.
The controller adapts the defrost detection, taking the defrost end temperature into account, in order to reach the set target time. This process can require several defrost cycles. If the heating output is too low, the set value might not be reached or it might only be reached approximately.
Adaptive defrost period determination (
Std
)
The controller calculates the optimal defrost period adaptively from 10 to 45 minutes based on system parameters determined by the controller. The setpoint temperature and the evaluation of previous defrosts are essentially the basis for the calculation.
Air cooler fan management
cFA
PdA
P_A
__A
PD_
P__
Fan runs permanently, with night cover*
( C onfig Fa n)
Fan runs permanently, with night cover*, fan is on during the defrost
Fan runs permanently even during the defrost
Fan runs during defrost
Fan runs permanently
Standard fan management
Applicable to both hot gas defrosting methods (
HGE
) and (
HGS
)
The defrost end temperature is calculated adaptively depending on the heat content of the hot gas.
Under the menu items " cdE " and " cdP ", the defrost period as well as the defrost end temperature, can be adjusted downwards, if necessary. After reaching the defrost end temperature, the cooling process is initiated once again at the end of an adaptive drain down time*. The start of the cooler fan is temperature and time-delayed, depending on the setpoint temperature, as described in the standard fan management under " Std ".
WE
Std
Fan runs permanently, with night cover*, fan is on during the defrost(
PdA
)
Fan runs permanently with additional detection of a night cover*.The fan is switched on during the defrosting process.
Fan runs permanently even during the defrost (
P_A
)
Fan runs permanently even during the defrosting process.
Recirculating air defrosting ( FAn )
The cooler fan is used exclusively for defrosting during the recirculating air defrosting. The defrost end is calculated adaptively. The expected defrosting duration is determined by the controller within the range of 12 to 45 minutes depending on the adjusted set point value. Two sensors are always required for the recirculating air defrosting (control mode " cS ", " dSL " or " dSC ")! Setpoint values under 0 °C / 32 °F are not permissible (Attention: even during setpoint shift the setpoint value must not be less than 0 °C / 32 °F). Non-compliance results in the alert "
EUS
.". The defrost relay is switched on during the recirculating air defrost if the goods protection program " configured to " OFF ”. The connection of an electric heater is in this case not allowed.
cGP
" is
Electric defrosting (
EL
)
The heating output required for the defrosting is supplied by an electric heater. A dynamic control process takes place above the melting point dependent on the cooler block temperature until the defrost end temperature is reached in order to minimise heat loss caused by convection and thermal radiation as well as from the heating output. The LED defrost request flashes while the defrost relay is switched off. The defrost end temperature and defrost period can be set under the menu items “ cdE ” and “ cdP ”. Depending on the ice buildup of the cooler the defrost end temperature is increased by the controller by a maximum of 5 K / 9 °R.
Fan runs during the defrost (
Fan runs permanently with night cover* ( Pd_ )
Fan runs permanently with additional detection of a night cover *. The fan remains switched off during the defrosting process.
__A )
Fan runs according to the standard fan management “ Std ”, but also during a defrosting process.
* Night cover “ PdA ” and “ Pd_ ” : During a load reduction within a refrigerated unit, due to a night cover, the controller switches from permanent operation to standard operation automatically. After cancelling a night cover, the controller switches back to permanent operation automatically. The detection of a night cover is not possible under control mode” cS ”, “ SSC ”.
Fan runs permanently ( P__ )
Fan runs permanently but not during a defrosting process.
Attention!
It is essential to ensure that the coolers during the defrosting process never interfere with each other due to secondary air currents. Secondary air currents do not only cause higher energy costs but also seriously impair the availability of a cooling plant. This results in icing-up in the area of the cooler, especially when operating at sub-zero temperatures.
Note:
Before starting the heat-up phase, the cooler-fan remains switched on for a maximum of 12 minutes for the use of a possible cold storage within the cooler block. During this time, the defrost request LED flashes. If the cooler block reaches the setpoint temperature within this time, the heat-up phase starts.
* Drain down time : After reaching the defrost end temperature, an adaptive drain down time follows for a period of approx. 5 to 8 minutes in order to ensure that the defrost water drains off. During the
Standard fan management (
Std
)
!
Fan pre-run:
If the room temperature increases 0.5 K / 0.9 °R above the setpoint value, the fan is first started (without the compressor running). The fan pre-run is controlled by means of temperature.
The delay time can vary between 90 seconds and 20 minutes until the compressor starts.The length of the forerun time depends considerably on the course of the cooler block temperature and air intake temperature. In any case, the cooling process is initiated above the setpoint temperature at
1.5 K / 2.7 °R. During this time, residual energy of the cooler is transferred to the refrigerated unit.
The formation of ice is reduced by the effect of sublimation, the relative air humidity increased and
!
the next defrosting process is delayed considerably.
Cyclic air circulation:
In order to ensure even thermal stratification within the refrigerated unit, the fan runs for 5 minutes every 15 minutes, if the room temperature is below the setpoint temperature .
!
Adaptive fan start temperature: After each defrosting process, the starting temperature of the fan is recalculated depending on the setpoint value and current room temperature in order to bind any possible residual heat within the cooler. The fan is controlled as described previously according to the principle of the time-delay switch, which is tracked adaptively in the event of setpoint changes and high loads.
WE Factory setting
(All temperature values of the factory setting are indicated in Celsius) 5
Note:
For recirculating air defrost (“ cd “ “ FAn “), the fan is switched on during the defrost phase regardless of the configuration given here.
You can obtain more information on defrost communication with its various possible applications directly from Cool Expert on request .
Digital input 1 & Digital input 2
dLL
(
C
onfig
I
nput
1, C
onfig
I
nput
2
)
Defrost communication with linked defrost start
( D efrost l ock l inked)
Standby ( Stb )
The standby mode is initiated immediately for the duration of the connection. The message “ Stb ” appears alternately with the room temperature " tL1 "in the display. After cancelling the signal, the controller remains locked for 8 minutes more. This delay time can be adjusted in operating level 2.1, item " iSd ". A safety time can be configured under “ cSd ”. Even in the case of continuous connection of the digital input, the controller reassumes its control function after the safety time has expired.
c11
c12
cSU
dSU
ECd
SH2
Cooling request suppression
( C ooling su ppression)
Defrost suppression
( D efrost su ppression)
Temperature communication
( E xternal c ooling d emand)
Setpoint shift with defrost suppression
( S etpoint s h ift 2 )
Edd
dLC
Stb
Defrost initiation
( E xternal d efrosting d emand)
Defrost communication
( D efrost L o c k)
Standby
( St and b y)
dC
SH1
WE
OFF
Detection of a door opening
( D oor c ontact)
Setpoint shift
( S etpoint s hift 1 )
Input not configured
( OFF )
Note:
An ongoing defrost is interrupted by the standby and resumed after cancelling the signal.
Detection of a door opening ( dC )
The cooling request and fan run are suppressed or interrupted immediately (regardless of all minimum runtimes). The message “ -d” is displayed alternately with the room temperature for the duration of door opening.The duration of the door opening in conjunction with " cdd " as well as a safety temperature under " cdt " can be configured in order to protect the goods against damage.
Setpoint shift ( SH1 )
The setpoint value is increased or decreased for the duration of the connection by the value configured under " cSS " and displayed in the operating level 1 under " tSA ".
Input not configured ( OFF )
No function is performed during connection of the input.
Attention:
The functions of the digital inputs 1 and 2 described here may only be connected using potential-free contacts.
Setpoint shift ( C onfig S etpoint S hift)
Parameter is only valid in conjunction with “ cI1 ”, “ SH1 ” or “ cI1 ”, “ Sh2 ” or
“ cI2 ”, “ SH1 ” or “ cI2 ”, “ SH2 ”
WE
cSS
0.0
Correction of the setpoint temperature
-30 to +30 K / -54 to +53.5 °R
Defrost communication with linked defrost start ( dLL )
!
Using electric defrost (" EL "), switching on the configured digital input results in a defrost phase after the expiration of all minimum runtimes (cooling demand, fan, ...). After finishing the defrost, fan and cooling demand are suppressed until the input signal is cancelled. 90 minutes after finishing the defrost the controller is starting his regular function even if the input signal is not released. A defrost is not allowed, if the signal for defrost suppression is switched on, or the last defrost happened less then 1 hour ago. However, the defrost request is saved and carried out after the removal of the internal lock.
!
Using recirculating air- or hot gas defrost (" FAn ", " HGE " and " HGS "), the "standard" defrost communication is carried out (see below).
Correction of the setpoint temperature
If the digital input has been configured accordingly, the setpoint temperature can be increased or decreased from -30 to +30 K / -54 to +53.5 °R here.
Note:
If circulating air defrosting is used (“ cd
”, “
FAn
”) the resulting setpoint value must not be set to less than 0 °C / 32 °F! The alert " EUS " follows if this is disregarded.
Duration of door opening ( C onfig D oor D uration)
Attention: When using defrost communication with the digital inputs 1 or 2, the goods protection program should not be configured. Nonobservance results in the alert " EUS ".
Parameter is only valid in conjunction with “ cI1 ”, “ dC ” or “ cI2 ”, “ dC ”
cdd
5
WE
OFF
Adjustable value: 1 - 120 minutes
Cooling request suppression ( cSU
)
The cooling request is suppressed or interrupted after the minimum running time has elapsed for the duration of the connection of the digital input or for a maximum of one hour. The fan management is not affected by this.
Time controlled door opening "Off”
Defrost suppression ( dSU
)
External defrost suppression only takes place after connection of the corresponding configured digital input. After cancelling the defrost suppression, a defrost can be initiated 1 hour after the cooling request at the earliest. A defrost that has already been initiated is not interrupted.
Temperature communication (
Ecd
)
Two MIC QKL mini 2’s are also able to communicate with each other using their digital inputs without a network module. An adaptive setpoint correction of more than two controllers can only be established using optional network modules, as described under the operating level 2.2.
Directly after a controller requests cooling, a temporarily adjustment of the setpoint temperature of the remaining controller takes place for the duration of the cooling request. The adapted setpoint temperature is displayed in the operating level 1 under '' tSA ''. The controller percieves the new setpoint temperature and starts his cooler fan first , followed by his cooling request in the event of a tendentiously increasing room temperature.
If the remaining controllers of the cooling position detect a tendentially falling room temperature, their cooling contactor remains inactive whereas the cooler fans remain switched on. After the controller which initially requested cooling reaches his setpoint temperature, the cooling request and the cooler fans are switched off under consideration of minimum runtimes. The air cooler fan management as configured under '' cFA '' is used again. The original setpoint temperature has now priority even for the former adapted controller.
Time controlled door opening "Off" ( OFF )
The cooling and fan request are suppressed for the duration of the door opening.
Safety temperature during door opening
Parameter is only valid in conjunction with “ cI1 ”, “ dC ” or “ cI2 ”, “ dC ”
WE
( C onfig D oor T emperature)
cdT
2
Adjustable value: 0.1 - 10 K / 0,5 - 17.5 °R
OFF
Safety temperature “Off”
Value 0.1 - 10 K / 0.5 - 18 °R
Switch-on temperature after door opening 0.1 - 10 K / 0.5 - 18 °R greater than setpoint.
Safety temperature "Off" ( OFF )
The room temperature is ignored for the duration of the door opening.
The procedure described above enables room-temperature driven compressor capacity-control to be implemented easily. Alarm time during door opening ( C onfig D oor A larm)
You can obtain more information on temperature communication with its various possible applications directly from Cool Expert on request.
Parameter is only valid in conjunction with “ cI1 ”, “ dC ” or “ cI2 ”, “ dC ”
Setpoint shift with defrost suppression (
SH2
)
For the duration of the connection the setpoint value is adjusted by the value configured under “ cSS ”.
During this time, no defrost can be initiated. A defrost that has already been initiated is not interrupted.
The “new” setpoint value is displayed in operating level 1 under “ tSA
”.
Value 1 - 120 minutes
When opening the door, the cooling and fan request are suppressed for the duration of the set time from 1 to 120 minutes. The set switch-off time can also be activated by an impulse of the door contact.
cdA
18
Adjustable value: 0 - 120 minutes
WE
Stdf
Standard
Defrost initiation (
Edd
)
Once all minimum runtimes have expired (cooling request, fan...), a defrosting process is initiated. A defrost is not permitted if the signal of the defrost suppression is active or the last defrost took place within less than one hour.
Value 0 - 120 Minuten
If the door remains open for longer than the configured time, a warning will be given by a periodic acoustic signal. After further 5 minutes the alert " Edo ” is generated.
Defrost communication ( dLC )
Multiple controllers can work together as a group in one or in several refrigerated units after initiating a defrost in order to achieve an optimum defrost result. A defrosting controller blocks all other controllers of a group and thus prevents the occurrence of cost-intensive peak loads. The functions mentioned below are implemented for the duration of the connection of the configured digital input regardless of the defrosting procedure selected.
Standard ( Std )
If the door remains open for longer than 120 minutes without interruption, the alert “ Edo ” is generated and the controller returns to its control funtion.
External standby safety time ( C onfig S tandy D uration)
Parameter is only valid in conjunction with “ cI1
”, “
Stb
” or “ cI2
”, “
Stb
”
!
For electric defrosting if the configuration " EL " is selected under " cD ".
The controller is switched to standby (a maximum of one hour) for the duration of the connection of the correspondingly configured digital input. After cancelling the signal, a defrost can be initiated 1 hour after the cooling request at the earliest.
!
For hot gas defrosting in interconnected and individual refrigeration systems if the configuration
“ HGE ” or “ HGS ” is selected under “ cd ”. The controller is switched to cooling request to generate hot gas (for a maximum of one hour) for the duration of the connection of the correspondingly configured digital input, regardless of the room temperature. After cancelling the signal, a defrost can already be initiated after 5 minutes of cooling request.
!
Recirculating air defrosting if the configuration " FAN " is selected under " cD ".
After the correspondingly configured digital input is connected, a defrosting process is also initiated.
If the signal continues after finishing the defrost, the controller is switched to standby. The controller switches to normal operation after one hour at most. After cancelling the signal, a defrost can be reinitiated after two-hours of cooling request at the earliest.
cSd
WE
120
Adjustable value: 1 - 600 minutes
OFF
No external safety time configured
Value 1 - 600 minutes
After the safety time set from 1 to 600 minutes has expired, an external standby is cancelled even if the signal is still active.
No external safety time configured ( OFF )
All control functions remain switched off for the duration of the external standby “ Stb ” (no time limit).
Attention: When using defrost communication with the digital inputs 1 or 2, the goods protection program should not be configured. Nonobservance results in the alert "
EUS
".
WE Factory setting
(All temperature values of the factory setting are indicated in Celsius) 6
Goods protection program ( C onfig G oods P rotection) Buzzer Control “Off”
Buzzer remains disabled at all.
cGP
FSL
ONL
FS
Goods protection program “on”, following setpoint, with early low temperature warning
Goods protection program “on”,
with early low temperature warning
Goods protection program “on”, following setpoint
Buzzer Control “On” with repetition
The buzzer is switched “on” in the event of a fault. The buzzer becomes disabled by pressing one of the buttons. If the fault is not cleared within two hours, the buzzer recurs.
Buzzer Control “On”
The buzzer is switched “on” in the event of a fault. After pressing one of the buttons, the buzzer is disabled and remains disabled up to the next fault.
On
Goods protection program “on”
Power failure control ( P ower F ail C ontrol)
WE
OFF
Goods protection program “off”
Configuring the goods protection program is only possible in the case of electro- or recirculating air defrost. In the case of recirculating air defrost the heating is done by an additional heater.
PFC On
Alert in the event of power failure“On”
WE
OFF
Alert in the event of power failure “Off”
Goods protection program on, following setpoint, with early low temperature warning (
FSL
)
To protect goods from low temperature (e.g. otherwise resulting in freezing), the goods protection program is initiated after the temperature has fallen below the actual setpoint, even if a setpoint correction is configured. If the room temperature falls more than 0.5 K/0.9 °R below the setpoint, after a maximum of 12 minutes the cooler fan is started. If the controller detects an ongoing negative trend of the room temperature in a time window of 18 minutes, the heating is switched on additionally. At the same time the low temperature warning " EGP " is displayed by the controller. If using hot gas defrost
(menu item " cd ", " HGE " or " HGS ") only the temperature is monitored, the defrost relay remains unswitched.
Alert in the event of power failure“On”
After a power failure, the alert “PFL occurs.
Alert in the event of power failure“Off”
After a power failure, the alert remains disable.
Test program
Goods protection program on, with early low temperature warning ( OnL )
In contrast to the previosly described procedure for the goods protection against low temperature, now the lowest setpoint is relevant for the monitoring. Here the correction value must be paid attention to, when setpoint correction is used. The further procedure is the same as described previously (" cGP ", " FSL ").
Goods protection program on, following setpoint ( FS )
See (" cGP ", " FSL "), however without early low temperature warning. The low temperature warning
" EGP " is displayed, after the heating/heater remained on for at least 60 minutes without interruption.
Goods protection program on ( On )
See (" cGP ", " OnL "), however without early low temperature warning. The low temperature warning
" EGP " is displayed, after the heating/heater remained on for at least 60 minutes without interruption.
Goods protection program off ( OFF )
Room temperatures below the setpoint are not monitored.
Note:
The setting "
FSP
" together with the setpoint correction " cSS
" could also be used as an unfreezing- or heating program. In the case of single sensor control (" cS "," cSS ") the goods protection program is not taken into account.
tST
Note:
The upper control button “
>
” is used to select the appropriate function. The selected function is switched on and off using the lower control button "
<
". The test program serves the purpose of checking the controller functions and system components. After 12 min. have elapsed without a button being pressed, the control will reassume its last configured functions and return to the user
Entry of password
WE
b_0
d_0
F_0
C_0
A_0
b_1
d_1
F_1
C_1
A_1
Buzzer
“Off - On”
Defrost heating relay
“Off - On”
Fan relay
“Off - On”
Cooling request relay
“Off - On”
Alert relay
“Off - On”
P__
: 1
( Te s t -Program)
( P assword)
Password adjustable between 0 and 999
“ : 1 ” = no password provided
Attention: When using defrost communication with the digital inputs 1 or 2, the goods protection program should not be configured. Nonobservance results in the alert "
EUS
".
To the expanded configuration level (operating level 2.1)
System monitoring ( C onfig E CO E nable)
cEE
WE
On
OFF
Alert “ ECO ” “On”
Alert “
ECO
” “Off”
:2.1-
oL1
The first menu item after changing to the expanded configuration level
(operating level 2.1)
To the Network level (operating level 2.2)
Note:
The system monitoring provides early warning of system faults before the malfunction occurs and protects goods against damage. By tracking the block temperature during the cooling process, a performance reduction of the cooling plant is already detected in the beginning and signalled by the alert “ ECO ”.
:2.2-
nID
The first menu item after changing to the network level
(operating level 2.2)
Back to operating level (operating level 1)
Temperature scale ( C onfig C elsius F ahrenheit)
tL1 The first menu item after changing to the operating level (operating level 1) WE
cCF
°C
°F
All temperature values are displayed in Celsius (°C)
All temperature values are displayed Fahrenheit (°F)
-1-
Setpoint temperature lower bound
WE
SLb
:50.0
( S etpoint L ower B ound)
Setting -50°C / -58°F to ...
The setpoint temperature lowerbound
Setpoint temperature upper bound
WE
SUb
50.0
( S etpoint U pper B ound)
Setting ... bis 50 °C / 121°F
The setpoint temperature upperbound
Note:
With “ SLb ” und “ SUb ” the adjustment range of the setpoint temperature under the item “ tSr ” can be limited. In conjunction with the password “ P__ ” a manipulation of the setpoint value (control level 1 under “ tSr
”) can be prevented.
Reset ( R e s e t )
rST
LFP
rbt
rtd
Loading of the factory settings (parameters and configuration are lost)
Restart of the controller (parameters and configuration are retained)
Reset of all values in the statistics level (control level 3)
nO Back to the configurationlevel without executing a function
Buzzer Control ( Bu zzer C ontrol)
bUC
OFF
Buzzer Control “Off”
rEP Buzzer Control “On” with repetition
WE
On
Buzzer Control “On”
WE Factory setting
(All temperature values of the factory setting are indicated in Celsius) 7
-°cool expert
:2.1-
MIC QKL mini 2
Operating level 2.1
The expanded configuration level
Correction factors for sensor TL1 and TBL Internal heat control ( I nternal h eat c ontrol)
Room temperature TL1 ( O ffset t L1 )
WE
oL1
0.0
Correction factor: -10 to 10 K / -18 bis 17,5 °R
iHC
1
WE
OFF
Heating control activated, value 1-15
No internal heat control
Block temperature TBL ( O ffset t BL )
WE
oBL
0.0
Correction factor: -10 to 10 K / -18 bis 17,5 °R
Heating control activated, value 1-15
Depending on this value the connected defrost heater will be checked in defined intervals. A value of 1 represents 6 month. Higher values will decrease the interval.
Attention:
Values larger than 5 can possibly affect the control functions in a negative way and should only be used on behalf of the Cool Expert Service.
No internal heat control ( OFF )
Interval checks of the defrost heater are disabled.
Correction factor ( oL1 ), ( obL )
The sensor values measured by the controller can be corrected in the range -10 to 10 K / -18 to 17.5
°R. The set correction value is added to or subtracted from the measured sensor values.
Note:
IIn some practical applications, in exceptional cases, when the sensor lines TL1 and TBL are extendedand cable conductors are missing, the three-wire measurement technique can be replaced by a two-wire measurement technique. The resistance resulting from this, which is normally compensated by the three-wire measurement technique, can be compensated by this parameter. If the two-wire measurement is absolutely essential, the sensors TL1 and TBL are connected to terminals 7 and 8 as well as 8 and 9. A bridge must be inserted between terminals 6 and 7 as well as 9
Display/hide temperature display ( D isplay t emperature)
Internal standby delay
iSd
WE
30
Std
Standard
( I nternal
Value 1 - 900 seconds s tandby d elay)
Value 1 - 900 seconds
Once a standby signal is cancelled (by digital input or network module), the controller remains blocked for the programmed duration.
dt
WE
On
OFF
Temperature display “ tL1 ” switched on
Temperature display “ tL1
” hidden
Default standby delay (
STD
)
The standby delay is set to 8 minutes (480 seconds).
Back to the configuration level (operating level 2)
Temperature display " tL1 " switched on
Display of the room temperature in operating level 1 under “ tL1 ”
Temperature display " tL1 " hidden
Display of the room temperature is hidden after 5 minutes (Display in the display “ ___ ”) The room temperature is displayed again by pressing a control button.
-2-
cS The first menu item after changing to the configuration level (operating level 2)
-°cool expert
:2.2-
MIC QKL mini 2
Operating level 2.2
The network level
Attention: Requirement for the usage of the network functions is that each controller is equipped with a network module. Controller release R19 and later have to be equipped with a network module release IF3.
nId
ntG
Defrost communication group
ndG
nUG
( N etwork d efrost g roup)
2
Adjustable value 1 - 8
Network identification ( N etwork id entifikation)
WE
OFF
Network based communication “off”
WE
OFF
Defrost Communication “Off”
1
Adjustable value 1 – 16
Adjustable value 1 – 16
The controllers in a network can be linked and separated in up to 16 communication groups.
Controllers with the same identification number can communicate with each other. Precondition is that they are configured as described below. Up to 128 controllers can be linked in one network.
Value 1 – 8
Up to 16 controllers can be linked together as a defrost communication group.
Precondition: The controllers belonging to the same defrost communication group have to be set to the same value of ‘’ ndG
’’ and ‘’ nId
’’ . Controllers of the same defrost communication group are working together and are coordinating their defrost processes in order to reach an optimum defrost result. A defrosting controller is locking the remaining controllers of the group (Cooling request- and defrost suppression). In this way the occurance of cost intensive load peaks, as well as influences due to secondary air flows are avoided.The following processes are carried out, depending on the selected defrosting method.
Network based Communication “Off“ ( OFF )
Network based communication disabled for this controller.
Temperature communication group
3
( N etwork t emperature g roup)
Adjustable value 1 - 8
!
For electric defrosting, if the configuration " EL " is selected under " cD ". If the controllers detect that one controller of their defrost communication group has started a defrosting process, all the remaining controllers are switched to standby. In the irregular case, the cancelling of the standby state is done after the defrosting time exceeds 90 minutes.. After cancelling the signal, the next defrosting process for thecontrollers that where switched to standby before is only allowed after one hour or if the setpoint temperature was reached.
WE
OFF
Temperature communication “off”
Value 1 - 8
With ‘‘ ntG ‘‘ it is possible to balance different room temperature zones in one and the same cooling position, using a setpoint adaption. Furthermore it is easily possible to assign the capacities of the evaporators to the capacities of the compressors according to the desired temperature difference
DT1 (room-temperature based central refrigeration plant capacity control). Up to 16 Controllers can be linked in one temperature-communication-group. Precondition: The controllers belonging to the same temperature communication group have to be set to the same value of ‘’ ntG ’’ and ‘’nId’’. For this purpose all evaporators have to be equipped with a controller. The coordination of the temperature balancing is done by temporarily adjusting the setpoint temperature. The adapted setpoint temperature is displayed in the operating level 1 under '' tSA ''. The communicating controllers perceive the new setpoint temperatures and first start their cooler fans followed by their cooling request, in the event of a tendentiously increasing room temperature. If the remaining controllers of the cooling position detect a tendentially falling room temperature, their cooling contactor remains inactive whereas the cooler fans remain switched on. After the controller which initially requested cooling reaches his setpoint temperature, the cooling request and the cooler fans are switched off under consideration of minimum runtimes. The air cooler fan management as configured under '' cFA '' is used again. The original setpoint temperature has now priority even for the adapted controller.A deviation of the setpoint temperature within a group is limited to max. 8 K / 14.5
°R.In the case of setpoint temperatures above freezing point, the controller ensures that the room temperature does not fall below 0.5 °C / 32.9 °F.
!
!
For hot gas defrosting in interconnected and individual refrigeration systems if the configuration
“ HGE ” or “ HGS ” is selected under “ cd ”.
Network defrost communication in combination with hot gas defrosting is not implemented in this software version.
Recirculating air defrosting if the configuration " FAN " is selected under " cD " . If the controllers of a defrost communication group percieve that one controller of their group has started a defrosting process, all the remaining controllers initiate a defrosting process for themselves. The cooling process can only be initiated again after all controllers of the concerned defrosting group have finished their defrosting process or if a safety time of 90 minutes is exceeded. After resuming the cooling process the next defrosting can be initiated after a total of 2 hours cooling request (per controller) at the earliest.
You can obtain more information on defrost communication with its various possible applications directly from Cool Expert on request.
Defrost communication “Off” ( OFF )
No network based defrost communication.
Note:
The defrost communication using the digital inputs is disabled when a defrost communication group is set.
Support group ( N etwork s u pport g roup)
Parameter only valid in combination with “ ndG
”, “
1
” or higher , hot gas defrost
“
-2-
”, “ cd
”, “
HGE
” or “
HGS
” and electrical defrost “
-2-
”,“ cd
”, “
EL
”
You can obtain more information on temperature communication with its various possible applications directly from Cool Expert on request.
1
Adjustable value 1 – 8
Communication of temperature “Off” (
OFF
)
No network based temperature communication.
WE
OFF
No support group configured
Note:
The temperature communication using the digital inputs is disabled when a temperature communication group is set.
In preparation: this parameter has currently no function!
WE Factory setting
(All temperature values of the factory setting are indicated in Celsius) 8
Hot gas power factor
nUP
( N etwork s u pport p ower)
WE
1
Adjustable value 1 - 100
Network service message ( nSP )
When pressing the lower button “ < ” a network service message is send.
Note:
“ -A” is shown if a message is sent successfully. The blinking Alarm-LED indicates an error when trying to send a message (e.g. no network module present, communication deactivated).
*winking: a winking controller shows a rotating “ ° ” in the display for aprox. 5 seconds and can
In preparation: this parameter has currently no function!
Network test
ntS
( N etwork t est)
SUG
SdG
StG
SId
nSP
Show support group
( S how s u pport g roup)
Show defrost communication group
( S how d efrost g roup)
Show temperature communication group
( S how t emperature g roup)
Show network identification
( S how n etwork i dentifikation)
Network service message
( N etwork s ervice p in)
Back to the configuration level (operating level 2)
-2-
cS The first menu item after changing to the configuration level (operating level 2)
Show support group (
SUG
)
When pressing the lower button “
<
” all controllers within the same support group will signal their group membership by winking*.
Show defrost communication group (
SdG
)
When pressing the lower button “
<
” all controllers within the same defrost communication group will signal their group membership by winking*.
Show temperature communication group (
StG
)
When pressing the lower button “ < ” all controllers within the same temperature communication group will signal their group membership by winking*.
Show network identification ( SId )
When pressing the lower button “ < ” all controllers within the same network identification will signal their group membership by winking*.
-°cool expert
-3-
MIC QKL mini 2
Operating level 3
The statistics level
( Id ent N umber) Display max. & min. room temperature
tHI
tLO
: 0.5
: 7.3
Maximum room temperature ” tL1 ”
( T emperature Hi gh)
Minimum room temperature ” tL1 ”
( T emperature Lo w)
Note:
After the first start-up of the controller or after resetting the statistic values, it can last up to 15 minutes until a value is visible.
The maximum and minimum room temperature is evaluated by sensor TL1 and is therefore only possible in the case of the two-sensor control.
Display defrost count ( D e f rost N umber)
dFn
1
The number of defrosting processes
Idn
cE3
Diagnostic values (Cool Expert internal)
d_1
d_6
d_2
i_0
i3.0
Displays Network interface version
.38
Displays software version
.1
r19
“ i_0 ”: no network interface registered
“ i_1 ”: network interface registered
Displays software subversion
Displays control version
Displays device name
d_3 d_4 d_5
d_7 d_8 d_9
Display number of door openings ( D oor C ontact N umber)
dCn
18
Number of door openings
Version number
Note:
The values above are needed for diagnosis in the case of service by Cool Expert and are insignificant for the normal operation.
Back to operating level (operating level 1)
Note:
Only in conjunction with configured door contact " dC " under “ cI1 ” or “ cI2 ”
Display number of alerts “ Edo ”
-1-
tL1 The first menu item after changing to the operating level (operating level 1)
( EC O N umber)
Edn
2
Number of “ Edo ” alerts
( EC O N umber) Display number of alerts “ ECO ”
ECn
3
Number of “
ECO
” alerts
Note:
The number of “
ECO
” alerts is recorded even if sytem monitoring is deactivated (Operating level 2
“ cEE ”, “ OFF ”) .
Number of power failures ( Pfn N umber)
PFn
2
Number of power failures
Note:
In the event of power failure and restoration of power the counter under “ PFN ” is increased by one.
Note:
All statistical values can be reset in operating level 2 (configuration level) under the menu item " rST , rtd ".
9
ES1 Sensor fault TL1
Cause:
Temperature sensor “ tL1
” not functioning.
Measures:
Check sensor TL1 or supply cable, line break or line-to-line fault.
ES2 Sensor fault TBL
Cause:
Temperature sensor “ tbL ” not functioning.
Measures:
Check sensor TBL or supply cable, line break or line-to-line fault.
ECO System monitoring
EUS Invalid configuration
Alerts
Cause:
A configuration entered by the user is invalid.
!
!
The position of the sensors TL1 and TBL is mixed up.
Measures:
Check the following configurations:
!
Recirculating air defrosting (item ” cd ”, “ FA n”) in conjunction with the one-sensor control (operating level 2 under “ cS ”, “ SSC ”) is invalid.
!
Setpoint values (under “ tSr ”) less than 0 °C / 32°F in the case of the recirculating air defrosting
(operating level 2 under ” cd ”,“ FAn ”) are invalid.(In the case of the setpoint shift (operating level 2 under “ cSS ”) the resulting setpoint value is less than 0 °C / 32 °F)
Notes:
As a rule: When the alert occurs, the last parameter changed in the configuration level was incorrect.
The alert “ EUS ” cannot be acknowledged. The message is cancelled automatically as soon as the cause of the fault has been removed.
Cause:
!
Controller detects no falling trend of the cooler block temperature during cooling request. The timedelayed alert takes place individually and is dependent on the speed of a constantly increasing block temperature. The alert takes place after 36 minutes at the earliest or after 6 hours at the latest.
!
During cooling request the temperature difference between the sensors TL1 and TBL is greater than
20 K /36 °R, for at least 30 minutes without interruption.
Measures:
Check system design (load of the refrigeration unit is too high in the case of storage).
!
!
Check number of times door is opened (displayed in operating level 3 under “ dCn ”).
!
Check the function of the compressor (high pressure, low pressure, oil pressure difference, protective motor switch).
!
Check expansion valve, adjust if necessary
!
Check system for lack of refrigerant.
!
Check condenser for dirt.
!
Check that machinery room has sufficient ventilation.
Check size and design of the liquid solenoid valve.
!
!
Check the function of the cooler-fan.
!
Check pressure-dependent speed control of the condenser fan (important at ambient temperatures
< 5 °C / 41 °F).
!
Check neutral zone pressure switch (compressor is switched off before reaching the setpoint temperature).
PFL
Cause:
Interruption of the power supply.
Measures:
Check power supply, possibly power failure, wire breakage or loose contact.
Note:
The monitoring of the power supply can be activated or deactivated in the operating level 2 under
“
PFC
”. The frequency of the voltage cut-off can be queried in the operating level 3 under “
PFn
”.
Edo
Power failure
Monitoring the door opening time
Cause:
Door opened for more than the door alarm time (item ” cdA ” in combination with “ cI1 ” od “ cI2 ”, “ dc ”) without interruption.
Measures:
Close door. Check the function of the door contact if necessary.
Note:
If the refrigerated unit is constantly overloaded, the system monitoring can be deactivated in the operating level 2 under “ cEE ”. No message is generated then.
EI0 Network module not recognized
Cause:
Network module cannot be recognized by the controller.
EC1 Time-based system monitoring
Measures:
Check network module and replace it if necessary.
Cause:
Setpoint temperature not reached within 48 hours, or 12 defrosts in succession without reaching the setpoint temperature.
EI1 Maximum utilisation of the network module
Measures:
Check cooling plant for sufficient output.
EdF Heating fault
Cause:
Network module is overloaded by the data traffic occurring in the network.
Measures:
Check network configuration.
Internal control faults Cause:
!
Maximum defrost period of one hour exceeded.
Measures:
!
Check output of the heater in the case of electric defrosting.
!
Check setting of the safety temperature limiter.
In the case of hot gas defrosting, check heat content of the hot gas.
!
!
Check, if necessary, whether heat is escaping during the defrost due to secondary air currents.
EGF Early low temperature warning / Goods protection fault
E34 ER0 EPr
Cause:
Internal fault of the control function
Measures:
Disconnect controller from the mains and restart. If one of the aforementioned alerts should occur repeatedly, the controller must be replaced.
Cause:
Early low temperature warning (read under “ cGP ”, “ FSL ” and “ OnL ”)
!
!
No increase of room temperature reached within a heating period of 60 minutes.
!
During the heating period, for at least 15 minutes, block temperature lies 15K / 27°R above room temperature.
Measures:
Check the function and output of the connected heater.
!
!
Check cooler fan.
Note:
Alerts detected by the controller remain stored even in the event of a power failure and are displayed again when power is restored (Fault display LED, alert and buzzer). Alerts can only be cleared under the menu item “ ALT ” with “ cLr ”. If the Power fail control “ PFC ” is set to “ ON ”, i.e. switched on, the alert “ PFL ” is displayed when power is restored.
Messages
UCH Standby by user IF3 Network module initialized
Controller was switched to standby by user in operating level 1 (“ ECt ” to “ OFF ”). The message “ UCH ” is displayed alternately with the room temperature for the duration of the standby.
The message “ IF3 ” appears after initialization or when a network module is installed.
Stb Standby by digital input IF_ Network module removed
Controller was switched to standby by digital input. The message “ Stb ” is displayed alternately with the room temperature for the duration of the standby.
The message “
IF_
” appears after removing a network module.
-dMessage at door opening
The message “ -d” is displayed alternately with the room temperature for the duration of door opening, when digital input (under “ cI1 ” od “ cI2 ”, “ dc ”) is configured accordingly.
10
11
MIC QKL mini 2
Reference
Customer:
Plant:
Controller No.:
Serial No.:
Marks:
Refrigeration specialist:
Address:
Phone:
Contact:
The Operating level
Parameter Description
tL1
Display of room temperature
tbL
tSA
Display of block temperature
Display of current setpoint temperature
tSr
ALT
Setpoint temperature setting
Alerts
ECT
-2-
Control On / Off (Standby)
To the configuration level (operating level 2)
-3To the statistics Level (operating level 3)
The configuration level
Parameter Description
cS
cSL
cd
Control mode (Sensors & defrost detection)
Defrost load pre-selection
Defrost management
cdE
cdP
Defrost end temperature
Defrost period
cFA
cI1
Air cooler fan management
Digital input 1
cI2
Digital input 2
cSS
cdd
Setpoint shift
Duration of door opening
cdt
cdA
Safety temperature during door opening
Alarm time during door opening
cSD
cGP
External standby safety time
Goods protection program
cEE
cCF
System monitoring
Temperature scale
SLb
SUB
Setpoint temperature lower bound
Setpoint temperature upper bound
rST
bUC
Reset
Buzzer control
PFC
tSt
Power failure control
Test program
P__
-2.1-
Entry of password
To the expanded configuration level
(operating level 2.1)
To the Network level (operating level 2.2) -2.2-
-1-
Back to operating level (operating level 1)
(Operating level 1)
Factory setting
Setting
-0.5
e.g.
-7.3
e. g.
-5.0
e. g.
-0.0
Display only
Display only
Display only
nO Display only
On
cS
tHI
Display only
Display only
(Operating level 2)
Factory setting
Setting
dSC
75
EL
10.0
STd
STD
OFF
OFF
0.0
OFF
2
STD
OFF
OFF
On
°C
-50.0
50.0
nO
On
Display only
OFF
A_0 Display only
- 1
oL1
LSP
Display only
Display only
tL1 Display only
-1-
Back to operating level (operating level 1)
The expanded configuration level
Parameter Description
oL1
Correction factor for sensor TL1
obL
dt
Correction factor for sensor TBL
Display/hide temperature display
iHC
Internal heat control
iSd Internal standby delay
-2-
Back to the configuration level
(operating level 2)
The network level
Parameter Description
nId
ntG
ndG
nUG
nUP
ntS
-2-
Network Identification
Temperature communication grout
Defrost communication grout
Support group
Hot gas power factor
Network test
Back to the configuration level
(operating level 2)
The statistics level
Parameter Description
tHI
tLO
Display max. room temperature
Display min. room temperature
dFN
dCN
Display defrost count
Display number of door openings
EDn
ECn
Display number of alerts “
Edo
”
Display number of alerts “ ECO ”
PFn
Idn
Number of power failures
Version number
d_1
...
Diagnostic values (Cool Expert internal)
d_9
-1-
Back to operating level (operating level 1)
Cool Expert
Entwicklungs GmbH
Besenacker 14
D-35108 Allendorf (Eder)
Tel. +49 (0) 6452 9290 0
Fax +49 (0) 6452 9290 290 e-mail [email protected]
Internet www.cool-expert.de
12
tL1 Display only
(Operating level 2.1)
Factory setting
Setting
0.0
0.0
On
OFF
STD
cS Display only
(The network level)
Factory setting
Setting
OFF
OFF
OFF
OFF
1
nSP
cS
Display only
Display only
(Operating level 3)
Factory setting
-0.5
e. g.
-7.3
e. g.
1 e. g.
18 e. g.
2 e. g.
3 e. g.
2 e. g.
r17
Setting
CtL e. g.
...
86 e. g.
tL1
Display only
Display only
Display only
Display only
Display only
Display only
Display only
Display only
Display only
...
Display only
Display only
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