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
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). 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.
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 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°
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).
DSO
OFF;
LO;
HI
Defrost start - thermostat cycle synchronization
OFF
: 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 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°
Evaporator fan re-start temperature after defrost.
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 Te-Ta is greater than FDT.
The fans are turned ON again with FDH
differential. (Te = Evaporator temperature,
Ta = Air 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
(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;
REL
Alarm 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...52
weeks
Condenser periodic cleaning. When the compressor operation time, expressed in weeks, matches the
ACC
value programmed, “CL” flashes in the display. With ACC=0 the condenser cleaning warning is
disabled and CND disappears from Info Menu.
IISM
NON;
MAN;
ECO;
DI
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.
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.
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 EPT
minutes. See Fig.3
SB
NO/YES
Stand-by button enabling.
DSM
NON;
ALR;
STP
Door switch input mode:
NON
: door switch inhibited
ALR
: when DIx=DOR and the digital input is on, an alarm is generated after DAD minutes
STP
: when DIx=DOR and the digital input is on, in addition to the alarm, the fans are immediately
stopped and the compressor is stopped after CSD minutes.
DAD
0...30 min
Delay before door open alarm warning.
CSD
0...30 min
NO
Compressor/heater stop delay after door has been opened. If CSD=NO compressor/heater never stops
due to the door opening.
OFF
ON
COMPR.
ON
COMPR.
ON
COMPR. OFF
FT1
FT2
FT3
FT3
FT2
Fig.2 Time-optimised fan control (FCM=TIM)
D1O
NON;
DOR;
ALR;
IISM;
RDS
DI1 digital input operation
NON
: 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 the
defrosts 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 open
CLS
: on close
D2O
See D1O
DI2 digital input operation. See D1O.
D2A
OPN; CLS. DI2 digital input activation. See D1A.
D3O
NON;
...
RDS;
DSY.
DI3 digital input operation
NON
...
RDS
: See D1O.
DSY
: defrost synchronization. The controllers will all start and end defrost together. The first controller
in defrost will get defrost of all the others started. The last controller ending defrost will get defrost of all
the others stopped.
D3A
OPN; CLS. DI3 digital input activation. See D1A.
LSM
NON;
MAN;
ECO;
DI1;
DI2;
DI3.
Light control mode
NON
: 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.
LSA
OPN;
CLS
Light activation (only with LSM=ECO or LSM=DIx).
OPN
: lights on with DIx open or ECO mode deactivated.
CLS
: lights on with DIx closed or ECO mode activated.
OA1
NON;
LGT;
0-1;
2CU;
2EU;
ALO;
ALC
AUX 1 output operation
NON
: 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 2CD
seconds 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;
2EU
Auxiliary probe T3 operation
NON
: 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 alarm
NON
: 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;
T3
Selects the temperature probe to be displayed.
T1
: probe T1
1-2
: the AVG-weighted average between T1 and T2
T3
: probe T3
AVG
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;
°F
Readout 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°F
SIM
0...100
Display slowdown.
ADR
1...255
BD1-28 address for PC communication.
EPT
EPT
Heavy duty
Heavy duty
Eco
Heavy duty
condition detection
ECO condition
detection
SP+HY0
SP
IISP
IISP+IIH0
IISP-IIH1
SP-HY1
Fig.3 - EPT parameter
WIRING DIAGRAMS
5.
BD1-28
1
2
4
5
6
7
8
9
10
11
13
19
20 21 22 23 24 25 26 27 28
RS485
data I/O
remote
16(4)A
16(4)A
7A
7A
AUX 2 AUX 1
16(12)A
NEUTRAL
AC
DC
AUX T3
Aux
DI1
DI2 DI3
L
N
LIVE
AIR T1
EVP T2
Power Supply
100...240 Vac
FUSE 20A
Remote
unit
INSTALLATION
1.
The
■
BD1-28 controller, size 107x95x47 mm (WxHxD), is to be secured to a DIN rail in such a position as to ensure that no liquid
infiltrates 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 condensing
unit. With
T3
=2EU the probe measures the temperature of the second evaporator and it must therefore be placed where there is
the maximum formation of frost. With
T3
=NON, the third probe is disabled.
DISPLAY INFO
2.
Alarm
Room high temperature alarm
Thermostat output
Room low temperature alarm
Fan output
Condenser high temperature
Defrost output
Generic alarm
Activation of 2
nd
set
Condenser clean warning
Controller in stand-by
Probe T1 failure
Defrost in progress
Probe T2 failure
Door open alarm
Probe T3 failure
In case of alarm, press any key to mute the buzzer sound.
Info items
Navigation
Instant probe 1 temperature
*
Instant probe 2 temperature
*
Instant probe 3 temperature
Max probe 1 temperature
Min probe 1 temperature
**
Compressor working weeks
Keypad state lock
*: only if enabled **: only if ACC > 0
Keypad Lock
THI / TLO / CND reset
OPERATION
3.
Setpoint I and II: display and modification
Standby (SB=YES)
1’’
3’’
I Set
II Set
Increase
Decrease
SELECTION OF SECOND PARAMETER GROUP
3.1
Manual (IISM=MAN)
Automatic (IISM=ECO)
Contact (IISM=DI)
ECO
(See Fig. 3)
DxA=CLS
DxA=OPN
DEFROST START
3.2
Manual
Timed (DFM=TIM)
Optimized (DFM=FRO)
Remote (DxO=RDS)
DFT hours
T2 < 0°C
for DFT hours
DxA=CLS
DxA=OPN
Synchronized (D3O=DSY)
-
-
-
+
+
+
27
27
27
BD1-28
BD1-28
BD1-28
28
28
28
DI3
DI3
DI3
Start and end are synchronized
among connected BD1-28
DEFROST TERMINATION
3.3
Time limit
Survey of 1 evaporator before time limit
Survey of 2 evaporators before time limit
DTO minutes
DTO minutes
or
T2 ≥ DLI
DTO minutes
or
T2 and T3 ≥ DLI
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, if probe T2 is active (
T2
=YES), the fans will re-start
when the evaporator gets to a temperature lower than
FDD
; Vice versa, if probe T2 is not active (
T2
=NO) or after defrost has
come to an end, such condition does not occur by end of the time
FTO
, after
FTO
minutes have elapsed the fans will be switched
on anyway.
Caution: if
DFM
=NON or
C-H
=HEA all defrost functions are inhibited; if
DFT
=0, automatic defrost functions are excluded. During
defrost, high temperature alarm is bypassed.
CONFIGURATION PARAMETERS
4.
Access / Navigation / Modification
PAR RANGE DESCRIPTION
SPL
-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 the
previous switchover. We recommend to set CRT=03 with HY0<2.0°.
CT1
0...30min
Compressor/Heater output run when probe T1 is faulty. With CT1=0 the output will always remain OFF.
Display value
Exit
Next
Previous
Visualize value
Increase or decrease value
Next or previous parameter
Exit
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.
BD1-28 INSTRUCTIONS FOR USE
=
Click
= Click and Hold
TECHNICAL DATA
6.
Power supply
BD1-28.…W
100-240Vac ±10%, 50/60Hz, 3W
Relay output max loads (240Vac)
Model
Output
BD1-28..S..-.
BD1-28..Q..-.
Compressor
16A resistive
12 FLA 72 LRA
12A resistive
12 FLA 72 LRA
Evap. Fan
16A resistive
3.6 FLA 21.6 LRA
12A resistive
3.6 FLA 21.6 LRA
Defrost
16A resistive
3.6 FLA 21.6 LRA
12A resistive
3.6 FLA 21.6 LRA
Auxiliary loads 1
7A resistive
1 FLA 4 LRA
7A resistive
1 FLA 4 LRA
Auxiliary loads 2
7A resistive
1 FLA 4 LRA
7A resistive
1 FLA 4 LRA
Input
NTC 10KΩ@25°C
LAE Part No. SN4...
Measurement Range
-50…110°C, -58…180°F
-50 / -9.9 … 9.9 / 110°C
Measurement accuracy
<0.5°C within the measurement range
Operating conditions
-10 … +50°C; 15%...80% r.H.
Pollution degree 2
Approvals and Reference Norms
- RoHS 2011/65/UE
- EN50082-1; EN55022 (Class B);
- EN60730-1; EN60730-2-9;
- UL60730-1, File SA32385
