Carel Hecu handleiding
Handleiding
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Hecu +0300023EN rel. 1.2 - 14.12.2021
7.4 MPXPRO/Ultracella connection to Hecu
Once the MPXPRO/Ultracella confi guration has been completed, the
serial network needs to be wired as shown in the following diagram:
C1
C2
L1/LL2/N L3UVW
12 345 678910
F
PE
C1
C2
Fieldbus - Modbus® RS485
max
5 units
Supervisory
system
1
RPRV valve
J1
J9
J11
J12
J14
J16
J17
J18
J19
J20
J21
J22
J23
J24
J10
J13
J2
J3
J4
J5
J6
J8
J7
ON
1
2
OFF
RX-/TX-
RX+/TX+
GND
Vout
RX-/TX-
RX+/TX+
GND
AUX
master
MPXPRO
High
voltage
AUX
master
master
EVDEVO EVDEVOmaster
MPXPRO
High
voltage
12
11
14
13
Fig. 7.n
To subsequently confi gure the entire system comprising Hecu and
MPXPRO/Ultracella, see the fast commissioning procedure described in
detail below.
Fast commissioning
From screen Eb00, start the AutoSetup procedure
for the UltraCella/MPXpro controllers connected to HECU. When
completed, screen Eb02 will be shown.
At the end of the procedure, the capacities of each evaporator are set on
screen Eb03, so as to maximise energy savings with the fl oating suction
function
Then download the default parameters so as to automatically confi gure
the following functions:
• Floating suction pressure set point (par. 6.3): the default values
enable compressor control with fl oating set point on screen Cab01.
The minimum and maximum set point values will be displayed
automatically, in accordance with the type of refrigerant and
application selected, together with the proportional gain and integral
time values required by the controller and already shown in paragraph
6.3.
• Oil recovery washing (par. 6.6): the default values enable the evaporator
oil recovery washing function on screen Fab24. The following
parameters manage this function:
Par. Description Def
tON
Washing cycle duration
180sec
tOFF
Time between two washing
cycles
180min
Mode
Sequential or same time
SINGLE CABINET AT TIME
Fixing time
Stabilisation time after washing
120sec
Tab. 7.q
• Evaporator control parameters: the default values enable smooth
lines evaporator control and involve the main evaporator control
parameters on screens Ecxx. These main values are shown in the table
below:
Par. Description Def
P3 Superheat set point 10
P4 Valve control: Proportional gain 8
P5 Valve control: Integral time 400
P6 Valve control: Derivative time 0
P7 Low superheat threshold 3
PSM Enable smooth lines Enable
Plt Off set to stop control below set point (smooth lines) 4
Phs Maximum superheat off set (smooth lines) 9
PSP Smooth lines: Proportional gain 3.0
PSI Smooth lines: Integral time 360.0
PSD Smooth lines: Derivative time 0.0
Tab. 7.r
Notice: all the values indicated as defaults by the fast
commissioning procedure can be modifi ed so as to optimise operation
of the entire system. It is recommended to change one parameter at a
time and then evaluate the eff ects over a period of no less than 10
minutes.
Bekijk gratis de handleiding van Carel Hecu, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Carel |
| Model | Hecu |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10743 MB |
