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CONTENTS
General Features .............................................................................................................................................2
1.
Main features of the multiplexed Master/Slave units..................................................................................................................... 3
2.
Models in the MPX series. ................................................................................................................................................................ 5
3.
Installation ......................................................................................................................................................................................... 6
3.1
Electrical connections ................................................................................................................................................................ 6
4.
User interface - Buttons and display................................................................................................................................................ 7
4.1
The LED display ........................................................................................................................................................................ 7
4.2
Operating indications ................................................................................................................................................................. 7
4.3
Keypad ....................................................................................................................................................................................... 7
5.
Configuration of the controllers....................................................................................................................................................... 9
5.1
Configuration of the controllers as Master or Slave:.................................................................................................................. 9
5.2
Selecting the principal operating parameters.............................................................................................................................. 9
5.3
Other important parameters...................................................................................................................................................... 10
5.4
Important parameters for all units (Master/Slave).................................................................................................................... 10
5.5
List of parameters to be checked during installation ................................................................................................................ 11
6.
Programming................................................................................................................................................................................... 12
6.1
Accessing the parameters ......................................................................................................................................................... 12
6.2
Modifying the parameters ........................................................................................................................................................ 12
6.3
Exiting the programming procedure......................................................................................................................................... 13
6.4
Manual reboot of the controllers .............................................................................................................................................. 13
7.
Programming by remote control ................................................................................................................................................... 14
7.1
Remote control layout .............................................................................................................................................................. 14
7.2
Introduction. ............................................................................................................................................................................. 14
7.3
Technical specifications ........................................................................................................................................................... 15
7.4
Description of the keypad ........................................................................................................................................................ 15
7.5
The PSW button and the command buttons. ............................................................................................................................ 16
7.6
How to use the remote control ................................................................................................................................................. 16
8.
Re-configuring a control with the default parameters................................................................................................................. 18
9.
The alarm log................................................................................................................................................................................... 19
10.
New local network functions...................................................................................................................................................... 20
10.1
Network defrost for multiplexed systems................................................................................................................................. 20
10.2
Remote alarm signals. .............................................................................................................................................................. 20
10.3
The network auxiliary relay. .................................................................................................................................................... 20
10.4
Configuring a network by "downloading" the parameters from the Master unit...................................................................... 20
10.5
Functions available to the RS485 serial supervisory system. ................................................................................................... 21
11.
DESCRIPTION OF THE CONFIGURATION PARAMETERS........................................................................................... 22
11.1
Configuration parameters ......................................................................................................................................................... 22
11.2
Parameter categories ................................................................................................................................................................ 22
11.3
The password ........................................................................................................................................................................... 22
11.4
/ = parameters for the management of the temperature probes................................................................................................. 23
11.5
r = parameters for temperature regulation ................................................................................................................................ 25
11.6
c = parameters for compressor management ............................................................................................................................ 27
11.7
d = Parameters for defrost management ................................................................................................................................... 30
11.8
A = parameters for alarm control ............................................................................................................................................. 33
11.9
Digital inputs and description of the interface commands for the supervisor........................................................................... 34
11.10
F = parameters for controlling the evaporator fans .............................................................................................................. 38
11.11
H = other settings................................................................................................................................................................. 39
12.
Operating states of the units ...................................................................................................................................................... 41
12.1
Sequence of the main phases.................................................................................................................................................... 41
13.
Alarms ......................................................................................................................................................................................... 42
13.1
Defective or incorrect operation............................................................................................................................................... 42
13.2
Description of the signals flashing on the display of the MPX ................................................................................................ 42
14.
Troubleshooting .......................................................................................................................................................................... 44
15.
Technical specifications.............................................................................................................................................................. 45
15.1
Technical characteristics: ......................................................................................................................................................... 45
15.2
Temperature/Resistance ratios for NTC thermistors ................................................................................................................ 46
15.3
View of the instrument ............................................................................................................................................................. 47
16.
WIRING DIAGRAMS ............................................................................................................................................................... 48
16.1
MPX contact rear view:............................................................................................................................................................ 48
17.
Summary of parameters............................................................................................................................................................. 49
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