AD3-5 INSTRUCTIONS FOR USE
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
Thermostat output
Fan output
Defrost output
Activation of 2nd parameter set
Alarm
Fig.1 — Front panel
Info / Setpoint button.
Increase / manual activation button.
Manual defrost / Decrease button.
Exit / Stand-by button.
INSTALLATION
Insert the controller through a hole measuring 71x29 mm.
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.
Fix the controller to the panel by means of the suitable clips, by pressingly gently; if fi tted, check that the rubber gasket
adheres to the panel perfectly, in order to prevent debris and moisture infi ltration to the back of the instrument.
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 fi ns 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.
OPERATION
DISPLAY
During normal operation, the display shows either the temperature measured or one of the following indications:
DEF
Defrost in progress
HP
Condenser high pressure alarm
REC
Recovery after defrost
HI
Room high temperature alarm
OFF
Controller in stand-by
LO
Room low temperature alarm
CL
Condenser clean warning
E1
Probe T1 failure
DO
Door open alarm
E2
Probe T2 failure
HC
Condenser high temperature alarm
E3
Probe T3 failure
INFO MENU
The information available in this menu is:
T1
Instant probe 1 temperature
TLO
Minimum probe 1 temperature recorded
T2
Instant probe 2 temperature
CND
Compressor working weeks
T3
Instant probe 3 temperature
LOC
Keypad state lock
THI
Maximum probe 1 temperature recorded
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
X
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
X
.
SETPOINT (display and modifi cation of desired temperature value)
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.
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 controllers 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
may take place manually by pressing button
M
for 2 seconds (with
IISM
=MAN), or
automatically when heavy duty conditions are detected (with
IISM
=HDD), or when the auxiliary input DI2 is activated (
IISM
=DI2).
The activation of Group II is signalled by the lighting up of the relevant LED on the controller display. If
IISM
=NON, switchover
to group II is inhibited.
DEFROST
Automatic defrost.
A defrost is started automatically as soon as the time set with parameter
DFT
has elapsed.
Timed defrost. With
DFM
=TIM the timer increment is continuous and defrosts take place at regular intervals. For example,
with
DFM
=TIM and
DFT
=06, a defrost will take place every 6 hours.
Optimised defrost. With
DFM
=FRO the timer is only increased when the conditions occur for frost to form on the evaporator,
until the time set with parameter DFT is matched. 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
DI2
=RDS, through the making of the auxiliary contact 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 infl uenced by a series of parameters.
Time termination:
T2
=NO and T3 different from 2EU: the evaporator temperature is not monitored and defrost will last as long
as time
DTO
.
Temperature monitoring of one evaporator:
T2
=YES and T3 different
from 2EU. In this case, if the sensor T2 measures the temperature
DLI
before the time DTO elapses, defrost will be terminated in advance.
Temperature monitoring of two evaporators:
T2
=YES,
T3
=2EU,
OAU
=2EU. This function is for the control of two independent
evaporators and it switches off the individual heating of the evaporator
which gets to temperature DLI fi rst, waiting for the second evaporator
to get to that temperature before the time DTO elapses (see fi gure).
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
a high pressure alarm, defrost is suspended. During defrost, high temperature alarm is bypassed.
CONFIGURATION PARAMETERS
To get access to the parameter confi guration menu, press button
X
+
for 5 seconds.
With button
or
select the parameter to be modifi 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
X
or wait for 30 seconds.
PAR
RANGE
DESCRIPTION
SCL
1°C;
2°C;
°F
Readout scale.
1°C (only with
INP
=SN4): measuring range -50/-9.9 … 19.9/80°C
2°C : measuring range -50 … 120°C
°F : measuring range -55 … 240°F
Caution: upon changing the SCL value, it is then absolutely necessary to reconfigure the parameters relevant to the
absolute and relative temperatures (
SPL
,
SPH
,
SP
,
ATL
,
ATH
, etc..)
SPL
-50..SPH
Minimum limit for
SP
setting
SPH
SPL.120°
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
HYS
1...10°
OFF/ON thermostat differential
Refrigerating control (C-H=REF ) Heating control (C-H=HEA)
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
DS
=YES).
2CD
0...120sec
Auxiliary compressor start delay. If
OAU
= 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.
DFM
NON;
TIM;
FRO
Defrost start mode
NON : defrost function is disabled (the following parameter will be FID).
TIM : the defrost time count is increased continously.
FRO : the defrost time count is only increased when the conditions occur for frost to form on the evaporator
(optimised time increase).
DFT
0...99 hours
Time interval among defrosts. When this time has elapsed since the last defrost, a new defrost cycle is started.
DFB
NO/YES
Defrost timer count 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...120°
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).
DRN
0...30min
Pause after defrost (evaporator drain down time).
DDY
0...60min
Display during defrost. If
DDY
= 0 during defrost the temperature continues to be displayed. If
DDY
> 0, during defrost
the display shows DEF, when defrost is over REC is displayed during DDY minutes.
FID
NO/YES
Fans active during defrost.
FDD
-50...120°
Evaporator fan re-start temperature after defrost.
FTO
0...120min
Maximum evaporator fan stop after defrost.
FTC
NO/YES
Optimised fan control enabling. With
FTC
= NO the fans remain on all the time.
Fig.2 Optimised fan control (FTC=YES)
FT1
0...180sec
Fan stop delay after compressor stop. See Fig. 2
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+HY.
Temperature alarm with relative thresholds, Temperature alarm with relative thresholds,
refrigerating control (ATM=REL, CH=REF). heating control (ATM=REL, CH=HEA).
ALA
-50... 120°
Low temperature alarm threshold.
AHA
-50... 120°
High temperature alarm threshold.
ALR
-12... 0°
Low temperature alarm differential.
AHR
0... 12°
High temperature alarm differential.
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.
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...120°
Condensation temperature alarm.
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.
HDS
1...5
Controller sensitivity for the automatic switchover from Group 1 to Group 2 (1=minimum, 5 =maximum)
IISM
NON;
MAN;
HDD;
DI2
Switchover mode to second parameter set
NON: inhibition to use the second parameter group (the following parameter will be SB).
MAN: button
M
switches the two parameter groups over.
HDD: automatic switchover to the second parameter group, when heavy duty conditions are detected.
DI2: switchover to the second parameter group when the auxiliary DI2 input makes.
IISL
-50...IISH
Minimum limit for
IISP
setting.
IISH
IISL...120°
Maximum limit for
IISP
setting.
IISP
IISL... IISH
Setpoint in mode 2.
IIHY
1...10°
OFF/ON differential in mode 2.
IIFT
NO/YES
Optimised fan control enabling in mode 2.
IIDF
0...99 hours
Defrost timer set to start a defrost in mode 2.
SB
NO/YES
Stand-by button enabling
.
DS
NO/YES
Door switch input enabling (closed when door is closed).
DI2
NON;
HPS;
IISM;
RDS
DI2 digital input operation
NON : digital input 2 not active.
HPS: when contact opens a condensing unit high pressure alarm occurs.
IISM : when contact makes the controller will use group 2 parameters.
RDS : when contact makes a defrost is started (remote control).
LSM
NON;
MAN;
DOR
Light control mode
NON : light output not controlled.
MAN : light ouput controlled through button
M
(if
OAU
=LGT).
DOR : light ouput switched on when door is opened (if
OAU
=LGT).
OAU
NON;
0-1;
LGT;
2CU;
2EU;
AL0;
AL1
AUX output operation
NON : output disabled (always off).
0-1 : the relay contacts follow the on/standby state of controller.
LGT : output enabled for light control.
2CU : output programmed for the control of an auxiliary compressor.
2EU : output enabled for the control of the electrical defrost of a second evaporator.
AL0 : contacts open when an alarm condition occurs.
AL1 : contacts make when an alarm condition occurs.
INP
SN4; ST1
Temperature sensor selection. With
INP
= SN4, the probes must be the LAE models SN4..; with
INP
= ST1, the probes
must be the LAE models ST1...
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.
T3
NON;
DSP;
CND;
2EU
Auxiliary probe T3 operation
NON: probe T3 not fi tted.
DSP: temperature T3 to be displayed.
CND: condenser temperature measurement.
2EU: second evaporator temperature measurement.
OS3
-12.5..12.5°C
Probe 3 offset.
TLD
1...30 min
Delay for minimum temperature (TLO) and maximum temperature (THI) logging.
SIM
0...100
Display slowdown.
ADR
1...255
AD3-5 address for PC communication.
WIRING DIAGRAMS
TECHNICAL DATA
Power supply
AD-3…D 12Vac±10%,
50/60Hz,
3W
AD-3...W
110 - 230Vac±10%, 50/60Hz, 3W
Relay outputs
Compressor
12(5)A 240Vac
Evap. fans
7(2)A 240Vac
Defrost 7(2)A
240Vac
Auxiliary loads
7(2)A 240Vac
Inputs
NTC 10K
Ω
@25°C,
LAE part No. SN4...
PTC 1000
Ω
@25°C,
LAE part No. ST1…
Measurement Range
-50…120°C,
-55…240°F
Measurement accuracy
<0.5°C within the measurement range
Operating conditions
-10 … +50°C;
15%...80% r.H.
CE (Reference Norms)
EN60730-1; EN60730-2-9;
EN55022 (Class B);
EN50082-1
Front protection
IP55
VIA PADOVA, 25
31046 ODERZO /TV /ITALY
TEL. +39 - 0422 815320
FAX +39 - 0422 814073
www.lae-electronic.com
E-mail: [email protected]
P
A
R
TNER VENEZIA • 041 5460713
12(5)A
RS485
T2
T1
Door
Switch
7(2)A 7(2)A
AUX
115...230Vac
12A
7(2)A
AUX
Aux
Switch
DI2
T3
12
...
24Vac
17
18
19
20
21
23
22
24
3
2
4
8
7
6
5
1
AD3-5C24W-BG
AD3-5
INSTRUCTIONS FOR USE
ISTRUZIONI D’USO
ON
OFF
DRN
ON
OFF
ON
OFF
START
DLI
EVP1
DLI
EVP2
DEF2
DEF1
AD3-5
INSTRUCTIONS FOR USE
ISTRUZIONI D’USO
EN
IT
0LAD3001ENIT
12(5)A
RS485
T2
T1
Door
Switch
7(2)A 7(2)A
AUX
115...230Vac
12A
7(2)A
AUX
Aux
Switch
DI2
T3
17
18
19
20
21
23
22
24
3
2
4
8
7
6
5
1
AD3-5C14W-BG
