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Dixell XRB60CHC

Emerson Dixell XRB60CHC Installing And Operating Instructions

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XRB60CHC EN r1.1 2018.11.01.docx XRB60CHC 1/7
DIGITAL CONTROLLER WITH ADVANCED
ENERGY SAVING MANAGEMENT AND
BLUETOOTH CONNECTIVITY
XRB60CHC
1 GENERAL WARNINGS
1.1 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 described hereunder. It cannot be
used as a safety device.
• Check the application limits before proceeding.
• Dixell Srl reserves the right to change the composition of its products, even wit hout notice, ensuring
the same and unchanged functionality.
1.2 SAFETY PRECAUTIONS
• Check the supply voltage is correct before connecting the instrument.
• Do not expose to w ater or moisture: use the controller only within the operating limits avoiding sudden
temperature changes with high atmospheric humidity to prevent formation of condensation
• Warning: disconnect all electrical connections before any kind of maintenance.
• Fit the probe where it is not accessible by the End User. The instrument must not be opened.
• In case of failure or faulty operation send the i nstrument back to t he distributor or to “Dixell S.r .l.” (see
address) 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.
2 GENERAL DESCRIPTION
The XRB60CHC, 32x74x60mm format, is a microprocessor based controller suitable for applications on medium or low temperature ventilated refrigeration units. It has 3 relay outputs to control compressor, fans, light and defrost or auxiliary output. The device is also provided with up to 4 NTC probe inputs: the first one for temperature control, the second one to be located onto the evaporator to control the defrost termination temperature and to manage the fan and the third, optional and located on the HOT-KEY port, used to control the condenser temperature. There is also a configurable digital input. By using the HOT-KEY it is possible to program the instrument in a quick and easy way. The controller has Bluetooth 4.2 connectivity.
3 REGULATION
The regulation is performed according to the temperature measured by the thermostat probe with a positive differential from the set point: if the temperature increases and reaches set point p lus differential, the compressor will start. The compressor will stop when the temperature reaches the set point value again.
In case of fault because of the thermostat probe, the start and stop of the compressor are timed through parameters CoF and Con.
4 ENERGY REDUCTION ALGORITHM
4.1 DESCRIPTION
The device permits to set different temperature to be used during normal and reduced power use. The standard SET-POINT (SET) is used to maintain the temperature at a certain value when the energy saving status (ES) is not active. On the other side, when the ES status is active a different SET-POINT (SET_ES), higher than the standard one, will be used. The parameter HES will have to be set to change the regulation temperature according to the following formula:
SET_ES = SET + HES
There are also two different differential values for SET and SET_ES, which are used for compressor cut-in and cut-out: when ES status is active the HYE parameter will be used instead of the HY parameter.
The device uses special Energy reduction Algorithm (ErA algorithm from Dixell) to optimize loads activation during the day. It is possible to set two different algorithms (ErA=bAS or Aut). They differ for the used sensor and for the total length of the interval of time involved.
4.2 BASIC ENERGY SAVING ALGORITHM – ErA=bAS
This will be used when ErA=bAS. The energy saving status will be always saved in the internal memory to resume previous operation if a power failure occurs. It needs the presence of a door switch to work (i1F=dor).
4.2.1 Parameter involved and suggested values:
- ErA=bAS
- i1F=dor
- StE=4.0 hours
- EtS=6.0 hours
- HES=4.0 to 5.0 °C
- HYE=3 to 4°C
- dS=5 to 10 sec
- LdE=Y
FROM
TO
CHANGED BY
Normal
mode
Energy Saving
- Push the DOWN button for 3 sec (if enabled).
- Door continuously closed for the StE time.
Energy Saving
Normal
mode
- Push the DOWN button for 3 sec (if enabled).
- Controller in ES mode for the EtS time.
- If the controller is in ES mode, it returns in Standard mode (normal set-point) after opening the door more than dS time.
NOTE: the cycling mode (ES - Normal m ode - ES - etc.) works if i1F=dor and EtS and StE are different from zero. If EtS=0 or StE=0, the controller will not change the operating mode, and it will be possible to change from the normal mode to the energy saving mode by using ES button or by setting
i1F=ES. See the below diagrams where the status changing is depicted:
4.3 AUTOMATIC ENERGY SAVING ALGORITHM
This will be used when ErA=Aut. The operations are controlled by using the Aid parameter. After powering on the device, it automatically starts to analyze the temperature behavior by using the only room temperature probe. In this way it can build the best energy saving model according to the application. The device uses temperature behavior information of the previous Aid interval to manage the loads d uring the current period. When Aid is set to use long periods (Aid>1), a day-by-day model will be used during the first interval of time.
4.3.1 Parameter involved and suggested values:
- ErA=Aut
- HES= 3.0 to 5.0°C
- LdE=Y
- Aid=1 or 7
- nCE=4
- nCC=8
- Pdt=2
- HYE=3 to 4°C
- PPU=P1
- tun=depends on the regulation probe placement
NOTES:
1. In case of any blackout, the calculated energy saving model will be reset.
2. ErA can exclusively drive the light output by using the LdE parameter. When LdE=YES, the
light output status will change according to the energy saving (ES) status:
a. OFF if ES is active b. ON if ES is not active
3. It is always possible to override the light output status by using the frontal button. Anyway, this
modification will have a temporary impact on the lights if LdE=YES. In fact, ErA will take the control after the next ES status change.
4. ErA does not need any door switch input to work.
5. Be sure to place the room temperature probe in near the upper zone of the cabinet: this gives
the best results in terms of temperature variation analysis.
6. The Aid parameter indicates the interval of analysis as “number of days”. The suggested
values for it are 1 or 7, depending on the particular application.
XRB60CHC EN r1.1 2018.11.01.docx XRB60CHC 2/7
7. When Aid=1, the first day will be used to analyze the temperature behavior and to build the
model to apply to the second day. The model will be updated every day in order to better match the working conditions.
8. When Aid=7, the first 7 days will be used to analyze the temperature behavior and to build the
model to apply to the next 7 days. The model will be updated every 7 days in order to better match the working conditions.
9. When Aid=7, the first 7 days after power on will use a sub analysis base on 1 -day model.
10. nCE is used to define the minimum duration of an energy saving interval of time
11. nCC is used to move the SET-POINT value from normal mode value to the energy saving
mode value by steps (1 step = 1°C or 1°F, starting from the SET value and increasing it every 30 min till reaching the SET_ES value)
12. Pdt is used to anticipate the end of the energy saving mode in order to decrease the
temperature of the bottles before starting the normal mode interval
13. PPU select the probe used for automatic energy saving algorithm
14. tun is used to change the sensibility of the automatic energy saving algorithm. tun=H (high) is
used for cabinet with regulation probe installed near the evaporator air outlet flow. tun=L (low) is used for cabinet with regulation probe installed far away from the evaporator air outlet flow.
5 EXTRA COOLING FUNCTION
The extra cooling function (named Pull D own) is active when the room temperature measured from the probe 1 goes over the SET+oHt+HY value. In this case, a special set-point value, lower than the normal SET value, will be enabled. As soon as the room temperature reaches the SET+CCS value, the compressor will be stopped and the normal regulation will restart. N.B.: pull down function is disabled when CCS=0 or CCt=0. The CCt parameter sets the maximum activation time for any pull down. When CCt expires, the pull down will be immediately stopped and the standard SET -POINT will be restored. NOTE: in case of energy saving mode active, the used values will be: SET_ES=SET+HES, oHE and CCS.
6 EVAPORATOR FANS
With FnC parameter it can be selected the fans functioning:
• FnC=C-n fans will switch ON and OFF with the compressor and not run during defrost; when
compressor is OFF, fans will enter a duty-cycle working mode (see FoF, Fon, FF1 and Fo1 parameters).
• FnC=o-n fans will run even if the compressor is off, and not run during defrost ;
• FnC=C-Y fans will switch ON and OFF with the compressor and run during defrost; when
compressor is OFF all fans will enter a duty-cycle working mode (see FoF, Fon, FF1 and Fo1 parameters).
• FnC=o-Y fans will run continuously also during defrost.
After defrost, there is a timed fan delay allowing for drip time, set by means of the Fnd parameter. An additional parameter FSt provides the setting of temperature, detected by the evaporator probe, above which the fans are always OFF. By using this parameter it is possible to assure air circ ulation only if air temperature is lower than FSt value.
6.1 EVAPORATOR FAN AND DIGITAL INPUT
When the digital in put is configured as door switch (i1F=dor), fans and compressor status will depend on the odC parameter value:
• odC=no  normal regulation
• odC=FAn  evaporator fan OFF
• odC=CPr  compressor OFF
• odC=F-C  compressor and evaporator fan OFF
When rrd=Y the regulation will restart after a door open alarm.
7 DEFROST
7.1 DEFROST MODE
Any defrost operation can be controlled in the following way:
- EdF=rtC: by using an internal real time clock (only for models equipped with RTC).
- EdF=in: timed defrost, in this case a new defrost will start as soon as the idF timer elapses.
- EdF=Aut: automatic management, in this case the controller will start a new defrost any time a
change from normal to energy saving mode will occur (valid if ErA=Aut).
7.2 TIMED OR PROBE CONTROLLED MODE
Two defrost modes are available: timed or controlled by the evaporator’s probe. A couple of parameters is used to control the interval between defrost cycles (idF) and its maximum length (MdF). During the defrost cycle is possible to select some different display indications by using the dFd parameter. These modes are available with any kind of d efrost type:
- tdF=EL: electric heater defrost
- tdF=in: hot gas defrost.
7.3 AUTOMATIC DURATION DETECTION
When a defrost operation is performed by compressor stop (means by stopping the compressor and by activating the internal ventilators), it will be possible to use an automatic defrost mode by setting od2=ALt. In this case the device will use the evaporator probe (which MUST to be present and properly mounted on the evaporator surface) to detect the end of the actual defrost phase. In any case, a maximum period of time (MdF) and an upper evaporator temperature value will be used to stop the c urrent defrost phase. If ErA=Aut, the automatic defrost mode will activate a defrost at the beginning of any energy saving mode period. In this case the idF delay is used as safety function. It forces the controller to activate a defrost operation when idF runs. NOTE: during the defrost phase the loads (compressor and evaporator fans) will be controlled from the defrost algorithm.
8 INTERNAL COUNTERS
The next table shows the implemented load and function of total counters.
n1H
Number of relay output 1 activation (thousands of)
n1L
Number of relay output 1 activation (hundreds of)
n2H
Number of relay output 2 activation (thousands of)
n2L
Number of relay output 2 activation (hundreds of)
n3H
Number of relay output 3 activation (thousands of)
n3L
Number of relay output 3 activation (hundreds of)
n4H
Number of relay output 4 activation (thousands of)
n4L
Number of relay output 4 activation (hundreds of)
n5H
Number of digital input 1 activation (thousands of)
n5L
Number of digital input 1 activation (hundreds of)
n6H
Number of digital input 2 activation (thousands of)
n6L
Number of digital input 2 activation (hundreds of)
oCH
Compressor working hours (thousands of)
oCL
Compressor working hours (hundreds of)
In this way it is possible to monitor the application and discovering bad functioning that could lead to damages. They are updated in EEPROM every hour. It is not possible to reset them. NOTE: the compressor activation counters take into account also defrost in case of inversion (hot gas) mode.
8.1 AUX RELAY CONFIGURATION (PAR. oAX)
An auxiliary relay can be set by the oAx parameters, according to the kind of application. In the following paragraph the possible settings.
8.1.1 Light relay
With oAx=LiG the AUX relay operates as light output.
8.1.2 Auxiliary relay a. Relay activation by digital input 1 or digital input 2 (oAx=AUS, i1F or i2F=AUS): with
oAx=AUS and i1F, i2F=AUS the AUX relay is switched on and off by digital inputs.
b. Auxiliary thermostat: anti condensing heater with the possibility of switching it on and off also
by using the frontal keyboard. Parameters involved:
- ACH: kind of regulation for the auxiliary relay: Ht = heating; CL = cooling.
- SAA: set point for auxiliary relay.
- SHy: d ifferential for auxiliary relay.
- ArP: probe for auxiliary relay.
- Sdd: auxiliary output off during defrost.
- Ao1: output active when in energy saving mode
- AF1: output not active when in energy saving mode
The differential threshold value is set by the SHY parameter.
NOTE: if oAx=AUS and ArP=nP (no probe for auxiliary output) the AUX relay can be activated
- by digital input if i1F=AUS or i2F=AUS
- by auxiliary button (if set as AUS)
- by serial command (Modbus protocol)
- by fixed interval of time if Ao1>0 and AF1>0 (if Ao1=0 or AF1=0 the auxiliary output is
disabled)
8.1.3 On/off relay (oAx = onF)
When oAx=onF, the AUX relay is activated when the controller is turned on and de-activated when the controller is turned off.
8.1.4 Neutral zone regulation
With oAx=db the AUX relay can control a heater element to perform a neutral zone action.
• oA1 cut in = SET-HY
• oA1 cut out = SET
XRB60CHC EN r1.1 2018.11.01.docx XRB60CHC 3/7
8.1.5 Alarm relay
With oAx=ALr the AUX relay operates as alarm relay. It is activated every time an alarm happens. Its status depends on the tbA parameter: if tbA=Y, the relay is silenced by pressing any key. If tbA=n, the alarm relay stay on until the alarm condition recovers.
8.1.6 Activation during energy saving cycles
With oAx=HES, the AUX relay is energised when the energy saving cycle is activated.
9 FRONT PANEL COMMANDS
Press to display target set point and the real set point. When in programming mode it selects a parameter or confirms an operation
(ECO) To switch on and off the Energy Saving mode or the light output. Other functions related to par. LGC and LG2
(UP) In programming mode it browses the parameter codes or increases the displayed value. Other functions related to par. UPC and UP2
(DOWN) In programming mode it browses the parameter codes or decreases the displayed value. Other functions related to the par. dnC and dn2
(ONOFF) Keep it pressed for 3 sec to switch on and off the device
KEYS COMBINATION
+
To lock or unlock the keyboard
+
To enter in programming mode
+
To return to room temperature display
ICON
MODE
MEANING
On
Compressor enabled
Flashing
Anti-short cycle delay enabled (AC parameter)
On
Light output enabled
On
Ventilator output enabled
Flashing
Ventilator delay after defrost
,
On
Measurement unit
Flashing
Programming mode
On
Energy saving mode active
On
An alarm condition is present
Flashing
Start-up operations are pending
On
Auxiliary output is activated
NOTE: start-up operations lasts about 30 sec after powering on the device. At the end of this phase, the alarm icon will switch off if no alarm is active.
9.1 SET POINT MENU
The SET key gives access to a quick menu where it is possible to see:
- the set point value
- the real set point value (rSE)
Push and release the SET key five times or wait for 60 sec to return to normal visualisation.
9.2 CHANGE THE SETPOINT
1. Push the SET key for more than 2 sec to change the Set point value;
2. The value of the set point will be displayed and the “°C” LED starts blinking;
3. To change the Set value push the UP or DOWN button.
4. To memorise the new set point value push the SET key again or wait for 60 sec.
9.3 START A MANUAL DEFROST
Push the DEFROST button for more than 2 sec to start a manual defrost.
9.4 CHANGE A PARAMETER VALUE
To change the parameter values operate as follows:
1. Enter the Programming mode by pressing the SET+DOWN buttons for 3 sec (“°C” LED starts
blinking).
2. Select the required parameter. Press the SET button to display its value
3. Use UP or DOWN buttons to change its value.
4. Press SET to store the new value and move to the following parameter.
To exit: Press SET+UP buttons or waits for 15 sec without pressing any key.
NOTE: the set value is stored even when the procedure is exited b y waiting the time-out to expire.
9.5 ENTERING THE HIDDEN MENU
The hidden menu includes all the parameters of the instrument.
ENTER THE HIDDEN MENU
1. Enter the Programming mode by pressing SET+DOWN buttons for 3 sec (“°C” or “°F”
LED starts
blinking).
2. Released the keys and then push again SET+DOWN buttons for more than 7 sec. The “L2” label
will be displayed immediately followed from the HY parameter. NOW YOU ARE IN THE HIDDEN MENU.
3. Select the required parameter.
4. Press the SET key to display its value
5. Use UP or DOWN to change its value.
6. Press SET to store the new value and move to the following parameter.
To exit: Press SET+UP or wait for 15 sec without pressing any key.
NOTE1: if there are no parameters in L1, after 3 sec the “nP” label will be displayed. Keep the keys pushed till the “L2” message will be displayed.
NOTE2: the previous set value will be stored even if the programming mode is exited by waiting for the
time-out to expire.
MOVE PARAMETERS FROM THE HIDDEN MENU TO THE FIRST LEVEL AND VICEVERSA.
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL” (user
level) by pressing SET+DOWN. If a parameter is visible also in the First Level, in the HIDDEN MENU the decimal point will be lit.
9.6 LOCK THE KEYBOARD
1. Keep both UP and DOWN buttons pressed for more than 3 sec.
2. The “oFF” label will be displayed and the keyboard will be locked. If any button is pressed more
than 3 sec, the “oFF” message will be displayed.
9.7 UNLOCK THE KEYBOARD
Keep both UP and DOWN buttons pressed together for more than 3 sec till the “on” message will be displayed.
9.8 THE ON/OFF FUNCTION
If onF = oFF, the instrument will be switched off by pushing the ON/OFF button. The
“OFF” message will appear on the display. In this configuration the regulation is disabled. To switch the instrument on, push again the ON/OFF button.
WARNING: any load connected to the normally closed contacts of the relays is always supplied from the main voltage, even if the instrument is in standby mode.
10 PARAMETERS
REGULATION
Set
Regulation Set Point: LS to US
LS
Minimum SET POINT: (-55.0°C to SET; -67°F to SET) sets the minimum v alue for the set
point.
US
Maximum SET POINT: (SET to 150.0°C; SET to 302°F) set the maximum value for set point.
HY
Differential in normal mode (energy saving mode not active): (0.1 to 25.0°C; 1 to 45°F)
differential for set point. Compressor Cut-IN is
[SET-POINT + HY]. Compressor Cut-OUT is when the temperature reaches the set point.
HYE
Differential when energy saving mode is active: (0.1 to 25.0°C; 1 to 45°F) differential for set
point. Compressor Cut-IN is [SET-POINT + HES + HYE]. Compressor Cut-OUT is when the temperature reaches the [SET-POINT + HES].
odS
Outputs delay activation after power on: (0 to 255 min) this function is enabled after the
power-on of the instrument and inhibits any output activation for the period of time set in the parameter.
AC
Anti-short cycle delay: (0 to 50 min) minimum interval between a c ompressor stop and the
following restart.
Rtr
P1-P2 percentage for regulation: 100=P1 only; 0=P2 only
CCt
Maximum duration for pull down: (0.0 to 23h50min, res. 10min) after elapsing this interval of
time the super cooling function is immediately stopped
CCS
Differential for pull down: (-12.0 to 12.0°C; -21 to 21°F) during any super cooling phase the
regulation SETPOINT is moved to SET+CCS (in normal mode) or to SET+HES+CCS (in energy saving mode)
oHt
Overheating before activating the pull down function (when in normal mode): (1.0 to
12.0°C; 1 to 21°F) this is the upper threshold limit used to activate the super cooling function.
oHE
Overheating before activating the pull down function (when in energy saving mode): (1.0
to 12.0°C; 1 to 21°F) this is the upper threshold limit used to activate the super cooling function.
Con
Compressor ON time with faulty probe: (0 to 255 mi n) time during which the compressor is active in case of faulty thermostat probe. With CY=0 compressor is always OFF.
CoF
Compressor OFF time with faulty probe: (0 to 255 min) time during which the compressor is OFF in case of faulty thermostat probe. With Cn=0 compressor is always active.
PROBE SETUP
ot
Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust any possible
offset of the first probe.
P2P
Evaporator probe presence: n = not present; Y = the defrost stops by temperature.
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