Thank you for having chosen an LAE electronic product. Before installing the instrument, please read this instruction booklet carefully in order to
ensure maximum performance and safety.
1. INSTALLATION
1.1
The LDU15, size 77x35x77 mm (WxHxD), is inserted into the panel through a hole measuring 71x29 mm and is fixed by
pressing gently into the relative clamps. The rubber gasket should be inserted between the instrument frame and the panel, checking
that it adheres perfectly in order to prevent infiltration.
1.2
The instrument should work with room temperatures between -10°.. +50°C and relative humidity between 15%.. 80% inclusive.
Supply voltage, switched powers and connection set-up should scrupulously comply with the indications given on the container. To
reduce the effects of electromagnetic disturbance, keep the sensor and signal cables well separate from the power wires.
1.3
The sensor T1 measures the air temperature and activates in the thermostat control cycle; it should be placed inside the appliance
in a point that truly represents the temperature of the stored product.
CAUTION
: should the relays have to changeover a heavy load frequently, it is advisable to contact the manufacturer for indications on the lifetime
of the contacts.
Whenever products must be kept within very severe specifications or the products have considerable value, the use of a second instrument is
recommended, which activates upon or warns of any malfunction.
2. CONFIGURATION
The controller or regulator is adapted to the controlled system by suitably programming the configuration parameters, that is, through
the setup. The setup is accessed by pressing the buttons
+
+
in succession and keeping them pressed simultaneously for 3
seconds. The available parameters appear in table 1 as shown below.
Press the button
to pass from one parameter to the next and the button
to go back. Press
to display the value correlated to
the parameter and press
and
or
simultaneously to change it. Exit from setup is by pressing
or is automatic after 30 seconds
of not using the keypad. Setpoint
SP
display and adjustment is also possible during normal operation of the controller by pressing the
and
or
buttons. The range in any case remains within the limits
SPL
and
SPH
.
3. DISPLAYS
Upon switching on, just the central line (autotest) appears on the display for approximately three seconds and the subsequent
indications depend on the operating status of the controller. Table 2 gives the indications associated with the various states.
The temperature measured by the sensor T1 is handled by the microprocessor so that it is displayed in the most representative way. In
other words, the parameter
SCL
is used to select the display in °C with 0.1/1° auto-range (SCL=1°C), in °C with 1° fixed resolution
SET
AUX
SET
SET
SET
INSTRUCTIONS FOR INSTALLATION AND USE.
LDU15
SPL
-10.0.. SPH [°]
Minimum temperature set point
SPH
SPL.. +25.0 [°]
Maximum temperature set point
SP
SPL.. SPH [°]
Effective temperature set point
HYS
+0.1.. +10.0 [°]
Thermostat hysteresis
CRT
0.. 30 [min]
Compressor rest time
CDC
0.. 10
Compressor regulation with sensor T1 failure
DFR
0.. 24
Defrosting frequency /24h
DTO
1.. 120 [min]
Defrosting duration
DDY
1.. 60 [min]
Defrosting display control
ATL
-12.0.. 0 [°]
Low alarm differential
ATH
0.. +12.0 [°]
High alarm differential
ATD
0.. 120 [min]
Temperature alarm delay
ACC
0.. 52 [weeks]
Condenser periodic cleaning
OAU
NON/SBY/MAN/DEF/ALR
Auxiliary output mode of operation
BAU
NON/SBY/MAN
Auxiliary button mode of operation
SCL
1°C/2°C/°F
Readout scale
OS1
-12.5.. +12.5 [°]
Sensor T1 correction
SIM
0.. 100
Display slowdown
ADR
1.. 255
Peripheral address
TABLE 1
