User manual

24
ENG
MPXPRO - + 0300055EN rel. 1.3 07/03/13
Important:
• parameter H3 is equal to 0 by default on all MPXPRO controllers, to
avoid interference within the operating range of the remote control;
the values of parameter H3 should be unique for each device.
• after 5 minutes without pressing any button, the remote control
connection is automatically interrupted, together with any active
overrides. To keep the connection and any overrides active, press
any button before the 5 minutes elapse. Before interrupting the
connection, the display fl ashes for 10 seconds to signal the imminent
disconnection.
• the remote control can be disabled completely by setting parameter
H2=3.
Remote keypad and navigation
Set
button Pressed briefl y (1 s) Pressed and held (5 s)
Return to the pre-
vious menu
Mute buzzer
Return to the initial display
and save changes
Access ALL the parameters
Set
Edit parameter
Confi rm changes
Display set point
Scroll Light /Aux
Scroll Defrost ON/OFF
ON/OFF
Used to switch the instrument to the OFF logical status; in
this status all the control functions are deactivated, except
for communication with the supervisor, the Master/Slave
network and management of probe alarms.
Status area: display instrument status
Pro
Eud
Status
Temp. Probes
E
2
V Probes
ACC
ACC Probes
4
1
7
Used for direct and immediate access to the values read by
the probes on the MPXPRO and the main internal variables
used for the various control functions. The three buttons
access three diff erent menus. The menus are navigated in
the same way as on a traditional user terminal:
Pro
to enter/exit the menu for the displaying the
temperature probes;
Eud
to enter/exit the menu for the displaying the
probes/status relating the electronic expansion
valve;
ACC
to enter/exit the menu for the displaying the
probes/status relating to the anti-sweat function.
Below is a list of all the variables (with corresponding code) displayed in
the various menus:
Pro
Eud
ACC
SM Outlet probe temp. SH Superheat dPt Dewpoint
Sd1 Defrost probe temp. P3 Superheat set point SA Ambient temp.
Sr Intake probe temp. PPU Position (%) EEV SU Ambient humidity
Su Virtual probe temp. PF Position (steps) EEV SUt Glass probe temp.
SrG Control probe temp. tEu
Saturated evapora-
tion temperature
rAP
Anti-sweat heater
PWM output
St Set point tGS
Superheated gas
temperature
rA
Anti-sweat heater
output %
StU Working set point PEu Evaporation pressure
Sd2
Aux. defrost probe
temp.
SA1
Auxiliary probe 1
temp.
SA2
Auxiliary probe 2
temp.
“Outputs” area: directly override the digital outputs
Lights
Solenoid
Outputs
Defrost
Fans
5
2
8
Used to manually override the status of the various digital
outputs. Manually overriding an output disables the normal
operation of the instrument, that is, the MPXPRO controller
does not act on the overridden outputs. The MPXPRO
display signals that at least one output has been manually
overridden by switching on the spanner icon. The override
using the 4 buttons in this section is cyclical, that is, the
function changes status cyclically each time the specifi c
button is pressed. The override starts when the button
is fi rst pressed. The status of the most common logical
functions can be overridden:
Solenoid/compressor Defrost Light Fans
Restore
ALL
MPXPRO displays the outputs that are active by switching
on the corresponding icon. Pressing the “Restore ALL”
button briefl y (1 sec) deactivates the overrides on the digital
outputs in this section. Pressing and holding the “Restore
ALL” button disables all the overrides activated from the
remote control. Once the overrides have been disabled, the
controller automatically resumes normal operation.
Important: overriding the status of the solenoid output may
cause the activation of the fan outputs, depending on the
confi guration of the fan parameters (see confi guration parameters
F0 and F2).
“Commands” area: override digital-analogue outputs
and digital inputs.
This section can be used to override all the outputs on the MPXPRO,
both digital and analogue, as well as the digital inputs. The structure is
similar to the display of the probe readings, there are 3 submenus directly
accessible by pressing the 3 buttons:
D.O.
A.O.
D.I.
CMP Solenoid/compressor PF Position (steps) EEV di1 Dig. input 1
dEF Defrost PPU Position (%) EEV di2 Dig. input 2
FAn Evaporator fans FSC Modulating fans di3 Dig. input 3
LiG Light rA
Anti-sweat heater
output %
di4 Dig. input 4
AU AUX di5 Dig. input 5
ALM Alarm
dF2 Defrost aux
SSu Suction valve
ESu Equalizing valve
Navigation inside the menus is the same as on any user terminal. Pressing
any of the 3 buttons enters one of the menus, “Up” or “Down” scrolls
the variables, pressing “Set” displays the value of the selected variable,
and changing the value using “Up” or “Down” overrides the value. When
scrolling the menus, the display shows which variable is currently
virtualised by switching on the spanner icon. The override of any variable
can be disabled individually by briefl y pressing (1 sec) the “Restore ALL”
button corresponding to the specifi c variable. From the main menu,
pressing and holding (5 sec) the “Restore ALL” button disables all the
active overrides.