IR33S0ER00 Temperature Electronic Controller IR33 Series Descrition

1. Product Specification

2.Product feature

·Power supply
Models are available with power supply in the following versions: 12vac, 12 to 24 Vac/dc

(switching), 115 vac, 230 Vac or 11 to230 Vac (switching).All the models, furthermore, feature

a low power mode to increase immunity to voltage drops.When the voltage inside the instrument

falls below a certain threshold, the unit switches off the display so as to reduce powerconsumotion,

while still continuingto operate normally: the main relays remain eneraised and, as soon as the

voltage returns tothe normal level, the display comes on again.

·LED display
The controller is fitted with a very powerful and aesthetically pleasant display, with 3 digits and decimal

point, minus sign andicons to simplify the reading of the values and the operating status.

·Alarm buzzer
All models are fitted with a buzzer to signal the alarms.

·Keypad
Keypad with 4 or 8 buttons, depending on the product, with clear indications and direct functions.

·Remote control
To simplify the setting and display ofthe parameters, depending on the model, the instrument

can be fited with an infrared receiverto allow the use ofthe new compact remote control: this

device can be used on a series of ir33 controllers in the same room, withoutproblems of interference.

in fact, each controller is identifed by a different access code.

·Smart defrost
All ir33 series controllers can, as standard, manage the defrost functions in new modes with

much more effcient algorithms foroptimising the times (see the paragraph on smart defrosts).

·Multifunction input
All the instruments have two digital inputs that can be used in different modes, depending on

the value set for the"digital inputconfquration" parameters (parameters A4 and A5 for ir33,

ir33power, powercompact, powercompact small,parameter A9for ir33DlN, powercompact,

MasterCella). These inputs can be used to enable/disable the defrost, to manage serious

alarms thatrequire the immediate shut-down ofthe unit (e.g. high pressure) or delayed shut-down

ofthe unit (e.g.low pressure), or alternatively can be confqured to read NTC probes, with

parameters /3 and /4 for ir33, ir33power, powercompact, powercompact small+ parameter /A5

for ir33DIN, powercompact, MasterCella.

·Multifunction output

According to the model, the ir33 family can be provided with an additional multi-function

output for remote control of the alarmsignal for controling additional units with ON/0FF

activation so as to manage a second compressor, a second evaporator, thecondenser fans,

and so on.

·Real time clock
The wide range also includes models ftted with built-in real time clock.

·Pump down
This function ensures the compressor is stopped only when the evaporator is discharged

(see paragraph 6.8 "Pump down and lowpressure").

·Condenser
One ofthe new characteristics offered by these controllers is the possibility to manage,

via an NTC probe input, the condensingtemperature for both the alarms and control functions,

using the auxiliary output confqured by parameters H1 and H5.

·Double evaporator
Two independent evaporators can be managed, connected to the same circuit. The end

of defrost temperatures are independentand can be set by parameters dt1/dt2.

3. Production details