LAE BR1-28 Instructions For Use Manual

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CT1 0...30min Compressor/Heater output run when probe T1 is faulty. With CT1=0 the output will always remain OFF.CT2 0...30min Compressor/Heater output stop when probe T1 is faulty. With CT2=0 and CT1>0 the output will always be ON.Example: CT1=4, CT2= 6: In case of probe T1 failure, the compressor will cycle 4 minutes ON and 6 minutes OFF.DFM NON;TIM;FRO;RTCDefrost start modeNON : defrost function is disabled (the following parameter will be FCM).TIM : regular time defrost.FRO : the defrost time count is only increased when the conditions occur for frost to form on theevaporator (optimised time increase). If the evaporator works at 0°C, defrost frequency depends onthe thermal load and climatic conditions. With setpoints much lower than 0°C, defrost frequency mainlydepends on the refrigerator operating time.RTC : the defrost time is scheduled by parameters DH1, DH2, ...DH6.DFT 0...99 hours Time interval among defrosts. When this time has elapsed since the last defrost, a new defrost cycle is started.For example, with DFM=TIM and DFT=06, a defrost will take place every 6 hours.DFB NO/YES Defrost timer backup. With DFB=YES, after a power interruption, the timer resumes the count from whereit was left off with ±30 min. approximation. With DFB=NO, after a power interruption, the defrost timer willre-start to count from zero.DH1...DH6HH.M Scheduled time for defrost 1 to 6. HH hours from midnight, M tens of minutes. Accepted values go from00.0 to 23.5. After “23.5” the value is “---” that means “skipped defrost”. Example: DH1=8.3 means 8.30AM.DLI -50...110° Defrost end temperature.DTO 1...120min Maximum defrost duration.DTY OFF;ELE;GASDefrost type.OFF: off cycle defrost (Compressor and Heater OFF).ELE: electric defrost (Compressor OFF and Heater ON).GAS: hot gas defrost (Compressor and Heater ON).DSO OFF;LO;HIDefrost start - thermostat cycle synchronizationOFF: none. The defrost will occur without delay.LO: defrost start will be postponed to compressor cut-out (SOD = max delay).HI: defrost start will be postoponed to compressor cut-in (SOD = max delay).SOD 0...30 min Timeout for defrost start - thermostat cycle synchronization. If 0, defrost will start immediately.DPD 0...240sec Evaporator pump down. At the beginning of defrost, defrost outputs (determined by DTY) are OFF forDPD seconds.DRN 0...30min Pause after defrost (evaporator drain down time).DDM RT;LT;SP;DEFDefrost display mode. During defrost the display will show:RT: the real temperature;LT : the last temperature before defrost;SP : the current setpoint value;DEF : “dEF”.DDY 0...60min Display delay. The display shows the information selected with parameter DDM during defrost and forDDY minutes after defrost termination.FID NO/YES Fans active during defrost.FDD -50...110° Evaporator fan re-start temperature after defrost.FTO 0...120min Maximum evaporator fan stop after defrost.FCM NON;TMP;TIMFan mode during thermostatic control.NON : The fans remain ON all the time;TMP : Temperature-based control. The fans are ON when the compressor is ON. When the compressoris turned OFF, the fans remain ON as long as the temperature difference Te-Ta is greater than FDT.The fans are turned ON again with FDHdifferential. (Te = Evaporator temperature,Ta = Air temperature);TIM : Timed-based control. The fans areON when the compressor is ON. When thecompressor is OFF, the fans switch ON andOFF according to parameteres FT1, FT2,FT3 (See Fig.2).FDT -12...0° Evaporator-Air temperature difference for the fans to turn OFF after the compressor has stopped.FDH 1...12° Temperature differential for fan re-start.Example: FDT = -1, FDH=3. In this case, after the compressor has stopped, the fans are OFF when Te> Ta - 1 (FDT), whereas the fans are ON when Te < Ta - 4 (FDT-FDH).FT1 0...180sec Fan stop delay after compressor/heater stop.FT2 0...30min Timed fan stop. With FT2=0 the fans remain on all the time.FT3 0...30min Timed fan run. With FT3=0, and FT2 > 0, the fans remain off all the time.ATM NON;ABS;RELAlarm threshold management.NON : all temperature alarms are inhibited (the following parameter will be ACC).ABS : the values programmed in ALA and AHA represent the real alarm thresholds.REL : the alarm threshold is obtained by the sum of setpoint, thermostat differential and ALR/AHR.ALA -50... 110° Low temperature alarm threshold.AHA -50... 110° High temperature alarm threshold.ALR -12... 0° Low temperature alarm differential. With ALR=0 the low temperature alarm is excluded.AHR 0... 12° High temperature alarm differential. With AHR=0 the high temperature alarm is excluded.ATI T1; T2; T3 Probe used for temperature alarm detection.ATD 0... 120min Delay before alarm temperature warning.ACC 0...52weeksCondenser periodic cleaning. When the compressor operation time, expressed in weeks, matches theACC value programmed, “CL” flashes in the display. With ACC=0 the condenser cleaning warning isdisabled and CND disappears from Info Menu.IISM NON;MAN;ECO;DI;RTCSwitchover mode to second parameter setNON : inhibition to use the second parameter group (the following parameter will be SB).MAN : button switches the two parameter groups over.ECO : automatic switchover to the second parameter group, when ECO conditions are detected.DI : switchover to the second parameter group when DIx input is on.RTC : the second parameter group is activated at STT time and deactivated at EDT time.IISL -50... IISH Minimum limit for IISP setting.IISH IISL... 110° Maximum limit for IISP setting.IISP IISL... IISH Setpoint in mode 2.IIH0 1... 10° Thermostat OFF->ON differential in mode 2.IIH1 0... 10° Thermostat ON->OFF differential in mode 2.IIDF 0...99 hours Time interval among defrosts in mode 2.IIFC NON;TMP;TIM Fan control in mode 2. See FCM.ECS 1...5 Controller sensitivity for the automatic switchover from Group I to Group II (1=minimum, 5=maximum).EPT 0...240 min Eco pull-down time. Only with IISM=ECO. Group I parameters are used in regulation for at least EPTminutes. See Fig.3SB NO/YES Stand-by button enabling.DSM NON;ALR;STPDoor switch input mode:NON : door switch inhibitedALR : when DIx=DOR and the digital input is on, an alarm is generated after DAD minutesSTP : when DIx=DOR and the digital input is on, in addition to the alarm, the fans are immediatelystopped and the compressor is stopped after CSD minutes.DAD 0...30 min Delay before door open alarm warning.OFFONCOMPR.ONCOMPR.ONCOMPR. OFFFT1 FT2 FT3 FT3FT2Fig.2 Time-optimised fan control (FCM=TIM)CSD 0...30 minNOCompressor/heater stop delay after door has been opened. If CSD=NO compressor/heater never stopsdue to the door opening.D1O NON;DOR;ALR;IISM;RDSDI1 digital input operationNON : digital input 1 not active.DOR : door input.ALR : when the input is on, an alarm is generated (if AHM=STP, the compressor is stopped and thedefrosts are suspended).IISM : when the input is on, the controller will use group II parameters.RDS : when the input is on, a defrost is started (remote control).D1A OPN; CLS. DI1 digital input activation.OPN : on openCLS : on closeD2O See D1O DI2 digital input operation. See D1O.D2A OPN; CLS. DI2 digital input activation. See D1A.D3O NON;...RDS;DSY.DI3 digital input operationNON ... RDS : See D1O.DSY : defrost synchronization. The controllers will all start and end defrost together. The first controllerin defrost will get defrost of all the others started. The last controller ending defrost will get defrost of allthe others stopped.D3A OPN; CLS. DI3 digital input activation. See D1A.LSM NON;MAN;ECO;DI1, DI2,DI3;RTC.Light control modeNON : light output not controlled.MAN : light ouput controlled through button (if OAx=LGT).ECO : lights activated/deactivated following the ECO state.DIx : lights activated/deactivated following the DIx state.RTC : lights change state at STT time, then they revert their state at EDT time.LSA OPN;CLSLight activation (only with LSM=ECO, DIx or RTC).OPN : lights on with DIx opened, ECO mode deactivated or at EDT time.CLS : lights on with DIx closed, ECO mode activated or at STT time.STT HH.M Start time for timed action.EDT HH.M End time for timed actions.OA1 NON;LGT;0-1;2CU;2EU;ALO;ALCAUX 1 output operationNON : output disabled (always off).LGT : output enabled for light control.0-1 : the relay contacts follow the on/standby state of controller.2CU : output programmed for the control of an auxiliary compressor.2EU : output enabled for the control of the electrical defrost of a second evaporator.ALO : contacts open when an alarm condition occurs.ALC : contacts make when an alarm condition occurs.OA2 See OA1 AUX2 output operation. See OA1.2CD 0...120 sec Auxiliary compressor start delay. If OAx=2CU the auxiliary output is switched on with a delay of 2CDseconds after the main compressor has cut-in. Both compressors are turned off at the same time.OS1 -12...12° Probe T1 offset.T2 NO/YES Probe T2 enabling (evaporator).OS2 -12...12° Probe T2 offset.T3 NON;DSP;CND;2EUAuxiliary probe T3 operationNON : probe T3 not fitted.DSP : temperature T3 to be displayed.CND : condenser temperature measurement.2EU : second evaporator temperature measurement.OS3 -12...12° Probe 3 offset.AHM NON;ALR;STP;Operation in case of high condenser alarmNON : high condenser alarm inhibited.ALR : in case of alarm, “HC” flashes in the display and the buzzer is switched on.STP : in addition to the alarm symbols displayed, the compressor is stopped and defrosts are suspended.AHT -50...110° Condensation temperature alarm (referred to T3 probe).TLD 1...30 min Delay for minimum temperature (TLO) and maximum temperature (THI) logging.TDS T1;1-2;T3Selects the temperature probe to be displayed.T1 : probe T11-2 : the AVG-weighted average between T1 and T2T3 : probe T3AVG 0...100% The relative weight of T2 on T1 (if TDS = 1-2)Example 1: T1 = -5°, T2 = -20°, AVG = 100%. The displayed temperature will be -20° (T1 has no effect)Example 2: T1 = -5°, T2 = -20°, AVG = 60%. The displayed temperature will be -14.SCL 1°C;2°C;°FReadout scale.1°C : measuring range -50…110°C (0.1°C resolution within -9.9 ÷ 9.9°C interval, 1°C outside)2°C : measuring range -50 … 110°C°F : measuring range -55 … 180°FSIM 0...100 Display slowdown.ADR 1...255 BR1-28 address for PC communication.EPT EPTHeavy duty Heavy dutyEcoHeavy dutycondition detectionECO conditiondetectionSP+HY0SPIISPIISP+IIH0IISP-IIH1SP-HY1Fig.3 - EPT parameterWIRING DIAGRAMS5.BR1-281 2 4 5 6 7 8 9 10 11 13 1920 21 22 23 24 25 26 27 28RS485data I/Oremote16(4)A16(4)A7A7AAUX 2 AUX 116(12)ANEUTRALACDCAUX T3AuxDI1 DI2 DI3LNLIVEAIR T1EVP T2Power Supply100...240 VacFUSE 20ARemoteunitINSTALLATION1.The■ BR1-28 controller, size 107x95x47 mm (WxHxD), is to be secured to a DIN rail in such a position as to ensure that no liquidinfiltrates causing serious damage and compromising safety.Make sure that electrical connections comply with the paragraph “wiring diagrams”. To reduce the effects of electromagnetic■disturbance, keep the sensor and signal cables well separate from the power wires.Place the probe T1 inside the room in a point that truly represents the temperature of the stored product.■Place the probe T2 on the evaporator where there is the maximum formation of frost.■The function of probe T3 is determined by the parameter T3. With■ T3=DSP the probe measures the temperature to be displayed.With T3=CND the probe measures the condenser temperature, it must therefore be placed between the fins of the condensingunit. With T3=2EU the probe measures the temperature of the second evaporator and it must therefore be placed where there isthe maximum formation of frost. With T3=NON, the third probe is disabled.At the first power-up or after a long power failure, the display might show “TIM”: press any of the buttons to mute the buzzer,■then check if the real time clock is correct (MIN, HRS).DISPLAY INFO2.Alarm Room high temperature alarmThermostat output Room low temperature alarmFan output Condenser high temperatureDefrost output Generic alarmActivation of 2 nd set Condenser clean warningController in stand-by Probe T1 failureDefrost in progress Probe T2 failureDoor open alarm Probe T3 failureCheck clock timeIn case of alarm, press any key to mute the buzzer sound.Info items NavigationInstant probe 1 temperature* Instant probe 2 temperature* Instant probe 3 temperatureMinutes of the RTCHours of the RTCStart time for timed actionsEnd time for timed actionsMax probe 1 temperatureMin probe 1 temperature** Compressor working weeksKeypad state lock*: only if enabled **: only if ACC > 0Real Time Clock (RTC) modification (MIN, HRS, STT, EDT)IncreaseDecreaseKeypad Lock THI / TLO / CND resetOPERATION3.Setpoint I and II: display and modification Standby (SB=YES)1’’ 3’’I Set II SetIncreaseDecreaseSELECTION OF SECOND PARAMETER GROUP3.1Manual (IISM=MAN) Automatic (IISM=ECO) Contact (IISM=DI) Real time clock (IISM=RTC)ECO (See Fig. 3)DxA=CLS DxA=OPN12639Group II:Start at STTEnd at EDTDEFROST START3.2Manual Real time clock (DFM=RTC) Timed (DFM=TIM) Optimized (DFM=FRO) Remote (DxO=RDS)12639 Scheduled atDH1...DH6 time DFT hoursT2 < 0°Cfor DFT hoursDxA=CLS DxA=OPNSynchronized (D3O=DSY)- - -+ + +27 27 27BR1-28 BR1-28 BR1-2828 28 28DI3 DI3 DI3Start and end are synchronizedamong connected BR1-28DEFROST TERMINATION3.3Time limit Survey of 1 evaporator before time limit Survey of 2 evaporators before time limitDTO minutesDTO minutesorT2 ≥ DLIDTO minutesorT2 and T3 ≥ DLIResuming thermostatic cycle. When defrost is over, if DRN is greater than 0, all outputs will remain off for DRN minutes, inorder for the ice to melt completely and the resulting water to drain. Moreover, if probe T2 is active (T2=YES), the fans will re-startwhen the evaporator gets to a temperature lower than FDD; Vice versa, if probe T2 is not active (T2=NO) or after defrost hascome to an end, such condition does not occur by end of the time FTO, after FTO minutes have elapsed the fans will be switchedon anyway.Caution: if DFM=NON or C-H=HEA all defrost functions are inhibited; if DFT=0, automatic defrost functions are excluded. Duringdefrost, high temperature alarm is bypassed.CONFIGURATION PARAMETERS4.Access / Navigation / ModificationPAR RANGE DESCRIPTIONSPL -50..SPH Minimum limit for SP setting.SPH SPL...110° Maximum limit for SP setting.SP SPL... SPH Setpoint (value to be maintained in the room).C-H REF; HEA Refrigerating (REF) or Heating (HEA) control mode.HY0 1...10° Thermostat OFF -> ON differential.HY1 0...10° Thermostat ON -> OFF differential.CRT 0...30min Compressor rest time. The output is switched on again after CRT minutes have elapsed since theprevious switchover. We recommend to set CRT=03 with HY0<2.0°.Display valueExitNextPreviousVisualize valueIncrease or decrease valueNext or previous parameterExitThank you for having chosen an LAE electronic product. Before installing the instrument, please read this instruction bookletcarefully in order to ensure safe installation and optimum performance.BR1-28 INSTRUCTIONS FOR USE= Click = Click and HoldTECHNICAL DATA6.Power supplyBR1-28.…W 100-240Vac ±10%, 50/60Hz, 3WRelay output max loads (240Vac)ModelOutput BR1-28..S..-. BR1-28..Q..-.Compressor 16A resistive12 FLA 72 LRA12A resistive12 FLA 72 LRAEvap. Fan 16A resistive3.6 FLA 21.6 LRA12A resistive3.6 FLA 21.6 LRADefrost 16A resistive3.6 FLA 21.6 LRA12A resistive3.6 FLA 21.6 LRAAuxiliary loads 1 7A resistive1 FLA 4 LRA7A resistive1 FLA 4 LRAAuxiliary loads 2 7A resistive1 FLA 4 LRA7A resistive1 FLA 4 LRAInputNTC 10KΩ@25°C LAE Part No. SN4...Measurement Range-50…110°C, -58…180°F-50 / -9.9 … 9.9 / 110°CMeasurement accuracy<0.5°C within the measurement rangeReal Time Clock battery>150 hours; self-rechargeableOperating conditions-10 … +50°C; 15%...80% r.H.Pollution degree 2Approvals and Reference Norms- RoHS 2011/65/UE- EN50082-1; EN55022 (Class B);- EN60730-1; EN60730-2-9;- UL60730-1, File SA32385

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