We thank you for choosing an LAE controller. Before proceeding to the installation, please read this instructions sheet carefully; only in this way you will obtain
maximum performances and safety.
1. INSTALLATION
1.1 The SMD90 must be secured to the panel by means of screws or rivets to be inserted into the appropriate slots. Protection is IP30, therefore please locate
the unit in a position ensuring that no liquid infiltrates and damages the board.
1.2 Probes, power supply and outputs must be connected strictly according to the indications appearing on the board; the cables can pass through the hole
on the unit side. For supply voltage and maximum switchable loads, please read the label on the enclosure.
The flat cable of the SMD34RU remote unit must be connected to the relevant connector, please make sure that the mechanical polarity is respected.
1.3 The front of the SMD34RU must be inserted into the panel and sandwiched with the backside cover, then finally firmly closed by means of the screws
provided with the enclosure.
1.4 Probe T1 measures the air temperature and is used for the thermostat function. Probe T2 measures the evaporator temperature and must be secured to it
in a place where the maximum frost growth occurs.
1.5 The unit works with an ambient temperature between -10°.. +50°C and 15%.. 80% relative humidity. To reduce the effects of electro-magnetic interference,
place the probe and signal cables as away as possible from power lines.
Caution: where delicate or valuable products have to be maintained under strict conditions, please use a different controller for limit and alarm functions.
2. OPERATING LEVELS
For 3 seconds from the power-up the display illuminates a dash (self-check phase). The following indications depend on the operating status of the controller and
from the menu level activated by the operator.
On table 1 you can see status, levels and indications relevant to them.
2.1 S
TANDBY
: OFF permanently displayed to show the standby status. Setting the parameter OFF=YES enables the [0/I] button that allows to put the SMD90
on standby. If OFF=NO the button [0/I] is inhibited.
On standby, output controls and buttons are excluded with the exception of light command (manually or door controlled).
2.2 N
ORMAL
: during the normal operation phases, the display shows the air temperature, however the following indications can come up: ERR probe T1 fault;
ALR alarm status; DEF defrost in progress.
2.3 I
NFO MENU
: pressing button enables the information selection menu. In this menu the instantaneous temperatures T1, T2 and the alarm status appear.
It’s also possible to start a defrost manually or set the setup access code. The selection of the data to be displayed can take place sequentially, by repeatedly
pressing , or quickly via buttons and to scroll through the menu. You exit from the menu by pressing button or automatically after 5 seconds of no
button activation.
2.4 S
ETUP
: you have got access to the parameter menu by selecting 47 as passcode PC. To achieve this press buttons and or . The exit from the
setup takes place by pressing button or after 30 seconds of no button activation.
3. CONTROL PARAMETERS
The adaptation of the controller to the system that it controls is achieved through the parameters in the setup. The available parameters appear on table 2
hereinafter. You proceed from one parameter to the next/previous by pressing button or . To display the related value, press button , to change it press
INSTRUCTIONS FOR INSTALLATION AND USE.
SMD90B35 (A-C)
SMD34RU
S
TANDBY
N
ORMAL
I
NFO MENU
I
NFO DATA
S
ETUP
P
ARAMETER
MENU VALUE
OFF -20 DF DF- ADR 255
air temperature
manual defrost waiting for peripheral
start sequence address
DEF AL A H --- ---
defrost on alarm sources high ….
temperature
ALR T1 -18 --- ---
new alarm shows air ….
temperature
ERR T2 -22 SPH -18
probe 1 failure shows coil maximum
temperature setpoint
PC 47 SPL -25
pass code minimum
setting setpoint
Table 1
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