OEM Manual – CUBO
2
SMART
Pag. 21
9 Serial Communication (PSD drivers, Evaporators and Supervisory
System)
9.1 Communication with evaporators (features and requirements)
CUBO2 Smart condensing unit is managed by HECU controller (Carel).
In case the controllers used to manage the refrigerated units are Carel too (MPXPRO or ULTRACELLA), they
can be connected via RS485 serial line to the HECU.
The main benefits coming from this serial communication between condensing unit and evaporators are:
Optimized oil management with “Oil washing function”
Optimized suction pressure regulation by using “Floating Setpoint”.
Evaporator setup and monitoring directly by Cubo2 Smart user interface.
The communication between condensing unit and evaporators controller is allowed only with some
specific model of controllers (MPXPRO or ULTRACELLA) equipped with a specific software version. Please,
refer to the below tables to check the compatibility.
MPXPRO
CUBO2 Smart
SW version
(Hecu)
MPXPRO SW version
Compatible for serial communication (YES/NO)
Type of electronic expansion valve
EXV Carel PWM or Tev
2.1.362 or
previous
3.3 or higher YES NO
2.1.662 3.3 or higher YES NO
3.0.12 3.3 or higher YES NO
ULTRACELLA
CUBO2 Smart
SW version
(Hecu)
ULTRACELLA
SW version
Compatible for serial communication (YES/NO)
EXV driver model
EVD Evo (SW version 5.6 or
higher)
EVDice
2.1.362 or
previous
Any version NO NO
2.1.662
1.9 - 2.0 YES NO
2.1 YES NO
3.0.12
1.9 - 2.0 YES NO
2.1 YES YES
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