LAE LDU15 Instructions For Installation And Use

INSTRUCTIONS FOR INSTALLATION AND USE.
LDU15
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
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
the parameter and press
SET
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.
SET

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
and or simultaneously to change it. Exit from setup is by pressing
SPL -10.0.. SPH [°]
SPL.. +25.0 [°]
SPH
SPL.. SPH [°]
SP
HYS +0.1.. +10.0 [°]
CRT 0.. 30 [min]
CDC 0.. 10
DFR 0.. 24
1.. 120 [min]
DTO
1.. 60 [min]
DDY
ATL -12.0.. 0 [°]
ATH 0.. +12.0 [°]
ATD 0.. 120 [min]
0.. 52 [weeks]
ACC
NON/SBY/MAN/DEF/ALR
OAU
NON/SBY/MAN
BAU
SCL 1°C/2°C/°F
OS1 -12.5.. +12.5 [°]
SIM 0.. 100
1.. 255
ADR
+ + in succession and keeping them pressed simultaneously for 3
SET
to go back. Press
Minimum temperature set point
Maximum temperature set point
Effective temperature set point
Thermostat hysteresis
Compressor rest time
Compressor regulation with sensor T1 failure
Defrosting frequency /24h
Defrosting duration
Defrosting display control
Low alarm differential
High alarm differential
Temperature alarm delay
Condenser periodic cleaning
Auxiliary output mode of operation
Auxiliary button mode of operation
Readout scale
Sensor T1 correction
Display slowdown
Peripheral address
TABLE 1
to display the value correlated to
SET
or is automatic after 30 seconds
AUX