LAE RDC122T1R2 Instructions For Installation And Use

INSTRUCTIONS FOR INSTALLATION AND USE.
RDC122T1R2
RDC122T1R3B
RDC122T1R3J
We thank you for choosing an LAE controller. Before proceeding to the installation of the RDC 12, please read this instructions sheet carefully;
only in this way you will obtain maximum performances and safety

1. INSTALLATION

1.1 The instrument has got a size of 77x35x97 mm (WxHxD). It's inserted into the panel through a 71x29 mm hole and secured via the
suitable brackets exerting corret strength. The rubber gasket must be placed between the panel and the instrument front, so please make sure
that there are no gaps allowing liquid infiltrations.
1.2 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 cables carrying signals (probes and serial connections) and the controller as away as possible from power
lines.
1.3 Probes, power supply and outputs must be wired strictly following the diagram indicated on the enclosure, where the maximum loads
also appear. For supply voltage, the suitable transformer (mod. TRxxx) must be used.
1.4 Probe T1 measures air temperature and is used for the thermostat function; probe T2 measures the evaporator temperature and must be
secured to it on the place where the maximum frost growth occurs.
1.5 The RS485 serial communication port is available on the DATA connector. PIN 1 is identified by a dot.
Caution: • If the relays switch a large load frequently, we suggest you contact us to obtain information about the relay contact life.
• Where delicate or valuable products have to be maintained under strict conditions, please use a different controller for limit and alarm
functions.

2. CONTROL PARAMETERS

The adaptation of the RDC 12 to the the system that it controls is achieved through the parameters in the SETUP. Access to the parameters is
obtained by pressing + +
value by means of and change it via
programming, refer to the following table.

3. DISPLAYS

3.1 D C
URING ORDINARY
the temperature T3 appears. In some cases, owing to the structure of the cabinet or air stratification, the probes can not measure the desired
for 4 seconds. Scroll through the parameters by pressing
+ or . Exit from the SETUP occurs after 10 seconds of no key activation. To help yourself during
. At the power up, the display shows "—-" for 5 sec. during which the unit carries out a self-check; then
ONTROL
SPL minimum programmable temperature
SPh maximum programmable temperature
hyS thermostat on switching hysteresis
coF cooler minimum off time
con cooler minimum on time
cdc cooler safety run in case of probe failure
crS cooler re-start delay after power failure
dLi defrost limit temperature
dto defrost time out
drP drain time
diS display control during defrost
dty defrost type
Fct Evaporator Fan Control
FrS fan re-start after defrost
ventilation during defrost
Fid
Alo low alarm threshold
Ahi high alarm threshold
AdL temperature alarm delay
Ain alarm input selection
oS1 thermostat probe offset
oS2 evaporator probe offset
oS3 displayed probe offset
SiM slowdown of displayed temperature
Adr peripheral number
or until you select the desired one. Check its
[-01="dEF"; 00="T3"; 1... 30 minutes=timed "dEF"]
[Fan=off cycle; ELE=electrical; GAS=hot gas]
[-01=always on; 00=on/off with cooler; 1... 10 minutes=delayed off]
[00=off; 01=T2<FrS; 02=always on]
[-01=excluded; 00... 120 minutes]
[-50 ... +150°]
[SPL ... +150°]
[+01 ... +20°K]
[00 ... 10 minutes]
[00 ... 10 minutes]
[00=off ... 10(0)%=always on]
[00 ... 120 seconds]
[+01 ... +70°]
[01 ... 120 minutes]
[00 ... 10 minutes]
[-50 ... +150°]
[-50 ... +150°]
[ALo ... +150°]
[probe 1, 2, 3]
[-20 ... +20°K]
[-20 ... +20°K]
[-20 ... +20°K]
[00 ... 200]
[00 ... 255]