Carel MPXone ACS00CB000010, Руководство пользователя

Страница: 55 / 108

Fig.5.i
Ref. Description
E Forced-air evaporator
SV Solenoid valve
EEV Electronic expansion valve
Ref. Description
P Evaporation pressure (PEu)
T Superheated gas temperature (tGS)
ON/OFF (par. ON
Parameter ON is used to switch the controller ON/OFF. If there is a digital input configured as remote
ON/OFF, this has higher priority than the supervisor command or the ON parameter.
Code Description Def Min Max UOM User
User
terminal
ON
ON/OFF control
0/1: OFF/ON
0 0 1 - S YES
In this operating mode, the display shows the standard display, alternating with the message “OFF”.
When OFF, the following are possible:
l
access the parameters on the user terminal;
l
select the probe to be displayed, using the APPLICA app;
l
activate remote ON/OFF;
l
display the probe alarms (rE, E1, E2, E3, etc.) and errors EE, EF, Etc, Edc, alternating with the message
OFF.
When OFF, the following alarms are reset:
l
high and low temperature;
l
open door alarm (dor);
l
valve (LSA, LowSH, MOP).
Double thermostat
The double thermostat function is activated by setting parameter rd2> 0 and selecting mode AND or OR
logic mode (parameter db1). It is used to adapt automatically, that is, without changing the set point and
without an external signal, control of the unit based on a change in compressor load, especially when
switching from day to night and vice-versa. In fact, at night the showcase curtains are closed, there is less
heat exchange with the surrounding air and the compressor works less.
To do this, two set points and two differentials are defined:
l
St and rd, associated with the outlet probe (air off);
l
St2 and rd2, associated with the intake probe (air on).
ENG
0300086EN rel. 1.0 – 04.09.2018
5. Functions | 55