LAE AD2-5 Series User Manual

CRT
0...30min Compressor rest time. The output is switched on again after CRT minutes have elapsed since the
previous switchover. We recommend to set CRT=03 with HYS<2.0°.
CT1
0...30min Thermostat output run when probe T1 is faulty. With CT1=0 the output will always remain OFF.
CT2
0...30min Thermostat 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.
CSD
0..30min Compressor stop delay after the door has been opened (active only if D1=DOR or DI2=DOR).
DFM
NON;
TIM;
FRO
Defrost start mode
NON : 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 the
evaporator (optimised time increase).
DFM = TIM or FRO
DFT
0...99 hours Built-in timer value for an automatic defrost to take place.
DFB
NO/YES Defrost timer backup. With DFB=YES, after a power interruption, the timer resumes the count from
where it was left off with ±30 min. approximation. With DFB=NO, after a power interruption, the
defrost timer will re-start to count from zero.
DLI
-50...110°C Defrost end temperature.
DTO
1...120min Maximum defrost duration.
DTY
OFF;
ELE;
GAS
Defrost 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).
DPD
0...240sec Evaporator pump down. At the beginning of defrost, defrost outputs (determined by DTY) are OFF
for DPD seconds.
DRN
0...30min Pause after defrost (evaporator drain down time).
DDM
RT;
LT;
SP;
DEF
Defrost 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
for DDY minutes after defrost termination.
FID
NO/YES Fans active during defrost.
FDD
-50...110°C Evaporator fan re-start temperature after defrost (referred to T2 probe).
FTO
0...120min Maximum evaporator fan stop after defrost.
FCM
NON;
TMP;
TIM
Fan 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
compressor is turned OFF, the fans remain ON as long as the temperature difference T2-T1 is
greater than FDT. The fans are turned ON again with FDH differential. (T1 = Air temperature, T2 =
Evaporator temperature);
TIM : Timed-based control. The fans
are ON when the compressor is ON.
When the compressor is OFF, the
fans switch ON and OFF according to
parameteres FT1, FT2, FT3.
FDT
-12.0...0.0°C Evaporator-Air temperature difference for the fans to turn OFF after the compressor has stopped.
FDH
1.0 ...12.0°C Temperature differential for fan re-start.
Example: FDT = -1.0, FDH=3.0. In this case, after the compressor has stopped, the fans are OFF
when T2 > T1 - 1.0 (FDT), whereas the fans are ON when T2 < T1 - 4.0 (FDT-FDH).
FT1
0...180sec Fan stop delay after compressor 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;
REL
Alarm threshold management.
NON : all temperature alarms are inhibited (the following parameter will be ADO).
ABS : the values programmed in ALA and AHA represent the real alarm thresholds.
REL : the values programmed in ALR and AHR are alarm differentials referred to SP and SP+HYS.
SP
T[°]
SP+HYS+AHR
SP-ALR
ON
OFF
Temperature alarm with relative thresholds (ATM=REL).
ATM = ABS
ALA
-50 ... 110°C Low temperature alarm threshold.
AHA
-50 ... 110°C High temperature alarm threshold.
ATM = REL
ALR
-12.0...0.0°C Low temperature alarm differential.
With ALR=0 the low temperature alarm is excluded.
AHR
0.0 ...12.0°C
High temperature alarm differential.
With AHR=0 the high temperature alarm is excluded.
ATM = ABS or REL
ATI
T1; T2; T3 Probe used for temperature alarm detection.
ATD
0 ... 120min Delay before alarm temperature warning.
ADO
0 ... 30min Delay before door open alarm warning.
AHM
NON;
ALR;
STP;
Operation in case of high condenser alarm
NON : high condenser alarm inhibited (the following parameter will be ACC).
ALR : in case of alarm, “HC” ashes 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°C Condensation temperature alarm (referred to T3 probe). [only if AHM=ALR or AHM=STP]
ACC
0 ... 52
weeks
Condenser periodic cleaning. When the compressor operation time, expressed in weeks, matches
the ACC value programmed, “CL” ashes in the display. With ACC=0 the condenser cleaning
warning is disabled and CND disappears from Info Menu.
IISM
NON;
MAN;
DI2
Switchover mode to second parameter set
NON : inhibition to use the second parameter group (the following parameter will be SB).
MAN : button switches the two parameter groups over.
DI2 : switchover to the second parameter group when the auxiliary DI2 input makes.
OFF
ON
COMPR.
ON
COMPR.
ON
COMPR. OFF
FT1 FT2 FT3 FT3FT2
TECHNICAL DATA
Power supply
BIT25...E 230Vac±10%, 50/60Hz, 3W
BIT25...U 115Vac±10%, 50/60Hz, 3W
BIT25…W 115…230Vac±10%, 50/60Hz, 3W
Relay output max loads
Compressor 20(8)A 240Vac
Auxiliary loads 1 16(4)A 240Vac
Auxiliary loads 2 7(2)A 240Vac
Input
NTC 10KΩ@25°C LAE Part No. SN4...
Measurement Range
-50 / -9.9 … 19.9 / 110°C
-50…110°C, -58…180°F
Measurement accuracy
<0.5°C within the measurement range
Operating conditions
-10 … +50°C; 15%...80% r.H.
CE (Approvals and Reference norms)
EN60730-1; EN60730-2-9; EN55022 (Class B);
EN50082-1
VIA PADOVA, 25
31046 ODERZO /TV /ITALY
TEL. +39 - 0422 815320
FAX +39 - 0422 814073
www.lae-electronic.com
E-mail: sales@lae-electronic.com
IISM = MAN or DI2
IISL
-50... IISH
Minimum limit for IISP setting.
IISH
IISL... 110°C
Maximum limit for IISP setting.
IISP
IISL... IISH Setpoint in mode 2.
IIHY
1.0... 10.0°C OFF/ON differential in mode 2.
IIFC
NON;
TMP;
TIM
Fan control in mode 2. See FCM.
IIDF
0...99 hours Built-in timer value for an automatic defrost to take place, in mode 2.
SB
NO/YES
Stand-by button
enabling.
DI1
NON;
DOR;
ALR;
RDS.
DI1 digital input operation
NON : digital input 1 not active.
DOR : door input.
ALR : when contact opens an alarm is generated (if AHM=STP, the compressor is stopped and
defrosts are suspended).
RDS : when contact makes a defrost is started (remote control).
DI2
NON;
DOR;
ALR;
RDS;
IISM;
T3;
PSP
DI2 digital input operation
NON : digital input 2 not active.
DOR : door input.
ALR : when contact opens an alarm is generated (if AHM=STP, the compressor is stopped and
defrosts are suspended).
RDS : when contact makes a defrost is started (remote control).
IISM : when contact makes the second parameter group is active.
T3 : probe T3 input.
PSP : potentiometer setpoint input.
DI2 = T3
T3M
DSP;
CND.
Auxiliary probe T3 operation
DSP : temperature T3 to be displayed.
CND : condenser temperature measurement.
OS3
-12.5..12.5°C Probe 3 offset.
DI2 = PSP
PSL
-50...70°C Minimum setpoint adjusted via potentiometer.
PSR
0.0...15.0 °C Range of setpoint adusted via potentiometer
Example: with PSL=2.0 and PSR=8.0, the setpoint changes between 2.0°C and 10.0°C
(PSL+PSR).
POF
NO/YES Potentiometer standby enabling.
With POF=YES, when the potentiometer is turned to the minimum, the controller will be put on
standby.
LSM
NON;
MAN;
D1O;
D2O;
D2C.
Light control mode
NON : light output not controlled.
MAN : light ouput controlled through button
D1O : when DI1 is open, light output is on.
D2O : when DI2 is open, light output is on.
D2C : when DI2 is closed, light output is on.
OA1
NON;
FAN;
DEF;
LGT;
0-1;
ALO;
ALC
AUX 1 output operation
NON : output disabled (always off).
FAN : output enabled for fan control.
DEF : output enabled for defrost control.
LGT : output enabled for light control.
0-1 : the relay contacts follow the on/standby state of controller.
ALO : contacts open when an alarm condition occurs.
ALC : contacts make when an alarm condition occurs.
OA2
See OA1 AUX2 output operation. See OA1.
OS1
-12.5..12.5°C Probe T1 offset.
T2
NO/YES Probe T2 enabling (evaporator).
OS2
-12.5..12.5°C Probe T2 offset.
TLD
1...30 min Delay for minimum temperature (TLO) and maximum temperature (THI) logging.
SCL
1°C;
2°C;
°F
Readout scale.
1°C : measuring range -50…110°C (0.1°C resolution within -9.9 ÷ 19.9°C interval, 1°C outside)
2°C : measuring range -50…110°C
°F : measuring range -58…180°F
SIM
0...100 Display slowdown.
ADR
1...255 BIT25 address for PC communication.
WIRING DIAGRAMS
BIT25B1S3E-B
Power
Supply
L
N
data I/O
RS485
PC comm.
LCD-5S
16(4)A
20(8)A
Max total current 30A
A
B
7(2)A
remote
AUX 1
DI2
DI1
AUX 2
T1T2
65
412
3
14
16 15
17
13
121 1
10
OPERATION
DISPLAY
During normal operation, the display shows either the temperature measured or one of the following indications:
Defrost in progress Room high temperature alarm
Controller in stand-by Room low temperature alarm
Condenser clean warning Probe T1 failure
Door open alarm Probe T2 failure
Condenser high temperature alarm Probe T3 failure
Generic Alarm
INFO MENU
The information available in this menu is:
Instant probe 1 temperature Minimum probe 1 temperature recorded
*
Instant probe 2 temperature
**
Compressor working weeks
*
Instant probe 3 temperature Keypad state lock
Maximum probe 1 temperature recorded
*: displayed only if enabled (see §Conguration Parameters) ** : displayed only if ACC > 0
Access to menu and information displayed.
Press and immediately release button
■ .
With button
■ or select the data to be displayed.
Press button ■ to display value.
To exit from the menu, press button
■ or wait for 10 seconds.
Reset of THI, TLO, CND recordings
With button ■ or select the data to be reset.
Display the value with button
■ .
While keeping button
■ pressed, use button .
STAND-BY
Button , when pressed for 3 seconds, allows the controller to be put on a standby or output control to be resumed (with SB=YES only).
KEYPAD LOCK
The keypad lock avoids undesired, potentially dangerous operations, which might be attempted when the controller is operating in
a public place. In the INFO menu, set parameter LOC=YES to inhibit all functions of the buttons. To resume normal operation of
keypad, adjust setting so that LOC=NO.
SELECTION OF SECOND PARAMETER GROUP
It’s possible to select control parameters between two different pre-programmed groups, in order for the fundamental control
parameters to be adapted quickly to changing needs. Changeover from Group I to Group II (and vice versa) may take place
MANUALLY by pressing button for 2 seconds (with IISM=MAN), or AUTOMATICALLY when IISM=DI2 and the AUXILIARY
INPUT DI2 is activated (the activation of DI2 selects Group II). If IISM=NON, switchover to Group II is inhibited. The activation of
Group II is signalled by the lighting up of the relevant LED on the controller display.
SETPOINT ADJUSTMENT VIA POTENTIOMETER
With DI2=PSP the setpoint is set via a 10KΩ linear potentiometer connected to DI2. The setpoint changes between PSL (10KΩ)
and PSL+PSR (0Ω) proportionally. With POF=YES, if the potentiometer is turned to the minimum (0Ω), the controller will be put on
standby. If the second parameter group is active, the setpoint used will be IISP.
DEFROST
Automatic defrost. Defrost starts automatically when the defrost timer matches the time value set with DFT.
Timed defrost
■ . With DFM=TIM defrosts take place at regular intervals of DFT hours. For example, with DFM=TIM and DFT=06,
a defrost will take place every 6 hours.
Optimized defrost ■ . With DFM=FRO the timer is increased only when the condition for frost to form in the evaporator occurs. Once
the DFT value is reached, defrost takes place. If the evaporator works at 0°C, defrost frequency depends on the thermal load and
climatic conditions. With setpoints much lower than 0°C, defrost frequency mainly depends on the refrigerator operating time.
Defrost time count backup ■ . At the power-up, if DFB=YES, the defrost timer resumes the time count from where it was left off before
the power interruption. Vice versa, with DFB=NO, the time count re-starts from 0. In stand-by, the accumulated time count is frozen.
Manual or remote defrost start. It’s possible to manually start a defrost, by pressing button for 2 seconds, or defrost may be
started remotely, if DI1=RDS (DI2=RDS), through the making of the auxiliary contact DI1 (DI2).
Defrost type. Once defrost has started, Compressor and Defrost outputs are controlled according to parameter DTY. If FID=YES,
the evaporator fans are active during defrost.
Defrost termination. The actual defrost duration is inuenced by a series of parameters.
Time termination ■ : T2=NO. the evaporator temperature is not monitored and defrost will last as long as time DTO.
Temperature termination ■ : T2=YES. In this case, if the sensor T2 measures the temperature DLI before the time DTO elapses,
defrost will be terminated in advance.
Resuming thermostatic cycle. When defrost is over, if DRN is greater than 0, all outputs will remain off for DRN minutes, in order
for the ice to melt completely and the resulting water to drain. Moreover, the fans will re-start only when the evaporator temperature
is lower than FDD (if T2=YES), or after FTO minutes have elapsed.
Caution: if DFM=NON all defrost functions are inhibited; if DFT=0, automatic defrost functions are excluded; during a high pressure
alarm or a DI1 (DI2) generic alarm, defrost is suspended; during defrost, high temperature alarm is bypassed.
CONFIGURATION PARAMETERS
To get access to the parameter conguration menu, press button ■ + for 5 seconds.
With button ■ or select the parameter to be modied.
Press button ■ to display the value.
By keeping button ■ pressed, use button or to set the desired value.
When button ■ is released, the newly programmed value is stored and the following parameter is displayed.
To exit from the setup, press button ■ or wait for 30 seconds.
PAR RANGE DESCRIPTION
SPL
-50..SPH Minimum limit for SP setting.
SPH
SPL...110°C Maximum limit for SP setting.
SP
SPL... SPH Setpoint (value to be maintained in the room).
HYS
1.0...10.0°C OFF/ON thermostat differential.
INSTALLATION
The BIT-25 controller has a size 86x82x44 mm (WxHxD). ■
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. ■
If present, place the probe T2 on the evaporator where there is the maximum formation of frost. ■
If probe T3 is connected to DI2, its function is determined by the parameter ■ T3M. With T3M=DSP the probe measures the
temperature to be displayed. With T3M=CND the probe measures the condenser temperature, it must therefore be placed between
the ns of the condensing unit.
Thermostat output
Fan output
Alarm
Defrost output
Activation of 2nd parameter set
Info / Setpoint button.
Fig.1 - Front panel
Manual defrost / Decrease button.
Increase button / Manual activation.
Exit / Stand-by button.
Thank you for having chosen an LAE electronic product. Before installing the instrument, please read this instruction booklet
carefully in order to ensure safe installation and optimum performance.
DESCRIPTION
INDICATIONS
BIT25 INSTRUCTIONS FOR USE
SETPOINT : display and modication
Press button ■ for at least half second, to display the
setpoint value.
By keeping button
■ pressed, use button or to set the
desired value (adjustment is within the minimum SPL and the
maximum SPH limit).
When button
■ is released, the new value is stored.
86
38
92
103
44
82
DI2 as input for T3
probe (DI2=T3)
DI2 as input for setpoint
potentiometer adjustment
(DI2=PSP)
1
2
3
4
4
5
5
6
DI2
DI2
5
4

LAE AD2-5 Series Specifications

General

Brand	LAE
Model	AD2-5 Series
Category	Controller
Language	English