LAE electronic CDC122T1R2 - User Manual

We thank you for choosing an LAE controller. Before proceeding to the installation of the CDC 12, please read this instructions sheet carefully;
only in this way you will obtain maximum performances and safety.
1. INSTALLATION
1.1 The CDC122T1R2 and CDC122T1R3B have got a size of 77x35x77 mm (WxHxD), while the CDC122T1R3G and CDC122T1R3J have got a
size of 77x35x97 mm (WxHxD). The instrument is 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 etc.) and the controller as away as possible from power lines.
1.3 Probes, power supply, inputs 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 remote defrost start input needs an external activation voltage between 10 … 16Vac, 10mA. When this voltage is applied to the input,
defrost is started.
1.6 The RS485 serial communication port or, if fitted, the TTL ouput for the remote display 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 CDC 12 to the system that it controls is achieved through the parameters in the SETUP. Access to the parameters is obtained
by pressing + + for 4 seconds. Scroll through the parameters by pressing or until you select the desired one. Check its value by means
of and change it via + or . Exit from the SETUP occurs after 10 seconds of no key activation. To help yourself during programming, refer
to the following table.
SPL minimum programmable temperature [-50 ... +150°]
SPh maximum programmable temperature [SPL ... +150°]
hyS thermostat on switching hysteresis [+01 ... +20°K]
coF cooler minimum off time [00 ... 10 minutes]
con cooler minimum on time [00 ... 10 minutes]
cdc cooler safety run in case of probe failure [00=off ... 10(0)%=always on]
crS cooler re-start delay after power failure [00 ... 120 seconds]
drE hours between two defrosts [01 … 99 hours]
dLi defrost limit temperature [+01 ... +70°]
dto defrost time-out [01 ... 120 minutes]
drP drain time [00 ... 10 minutes]
diS display control during defrost [-01=”dEF”; 00=”T3”; 1... 30 minutes=timed “dEF”]
dty defrost type [FAn=off cycle; ELE=electrical; GAS=hot gas]
doP time count for defrost optimisation [con=continuous; Acc=frost accumulation]
Fct evaporator fan control [-01=always on; 00=on/off with cooler; 1... 10 minutes=delayed off]
FrS fan re-start after defrost [-50 ... +150°]
Fid ventilation during defrost [00=off; 01=T2<FrS; 02=always on]
Alo low alarm threshold [-50 ... +150°]
Ahi high alarm threshold [ALo ... +150°]
AdL temperature alarm delay [-01=excluded; 00... 120 minutes]
Ain alarm temperature selection [temperature 1, 2, 3]
oS1 thermostat probe offset [-20 ... +20°K]
oS2 evaporator probe offset [-20 ... +20°K]
oS3 displayed probe offset [-20 ... +20°K]
SiM slowdown of displayed temperature [00 ... 200]
Adr peripheral number [00 ... 255]
INSTRUCTIONS FOR INSTALLATION AND USE.
CDC122T1R2
CDC122T1R3B
CDC122T1R3G
CDC122T1R3J

Summary

Installation

Control Parameters

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 duty cycle for probe failure.

crS

Cooler re-start delay after power failure.

drE

Hours between two defrosts.

dLi

Defrost limit temperature.

dto

Defrost time-out.

drP

Dripping time.

dis

Display control during defrost.

dty

Defrost type (fan, electrical, gas).

doP

Time count for defrost optimisation.

Fct

Evaporator fan control mode.

FrS

Fan re-start after defrost.

Fid

Ventilation during defrost.

Alo

Low alarm threshold.

Ahi

High alarm threshold.

AdL

Temperature alarm delay.

Ain

Alarm temperature selection.

oS1

Thermostat probe offset.

oS2

Evaporator probe offset.

oS3

Displayed probe offset.

SiM

Slowdown of displayed temperature.

Adr

Peripheral number for serial communication.

Displays

During Ordinary Control

Displays temperature T3 during normal operation and probe adjustment.

During Defrost

Displays 'dEF' or T3 during defrost, based on parameter dis.

Other Display Status

Indicates alarm, standby, keypad lock, or communication faults.

Thermostat Function

Defrost Start

Time Count

Defrost intervals based on continuous or frost accumulation timer.

Remote Start

Allows manual initiation of defrost, overriding timer settings.

Manual Defrost

Option to manually start or abort a defrost cycle.

Defrost Function

Evaporator Heating

Controls fan, cooler, and defrost outputs during defrost.

Termination

Defrost ends based on time-out or temperature limit.

Dripping

Delay after heating to allow water drainage and heat spread.

Evaporator Fan Control

Run With Thermostat

Fan operation modes during temperature control.

Run During and After Defrost

Fan control during and after defrost cycles.

Alarm Function and Probe Failure

Probe Re-Calibration

Serial Communication

Warranty

LAE electronic CDC122T1R2 Specifications

General

Input	0..10V
Input Voltage	0..10V
Output Voltage	250Vac
Current Rating	8(3)A
Protection	IP40 Frontal
Output	Relay SPDT 8(3)A / 250Vac
Accuracy	±0.5% f.s.
Resolution	1°C; 1°F; 0.1°C; 0.1°F
Operating Temperature	-10..+60 °C
Dimensions	77x35 mm, depth 76 mm
Weight	Approx. 150 g