
Parker RAC Europe PSD04 | User manual ver. 3.6 | Code 144PSDI364 
 
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Index 
1INTRODUCTION .................................................................................................................................. 5 
1.1 Introduction........................................................................................................................................ 5 
1.2 Summarising table of the main features and available models................................................................... 6 
2DESCRIPTION ..................................................................................................................................... 8 
2.1 Description ......................................................................................................................................... 8 
3SIZE AND INSTALLATION ..................................................................................................................... 9 
3.1 Size ................................................................................................................................................... 9 
3.2 Installation ....................................................................................................................................... 10 
3.3 Additional information for the installation ............................................................................................. 10 
4ELECTRICAL CONNECTION ................................................................................................................. 11 
4.1 Meaning of the connectors.................................................................................................................. 11 
4.2 Example of electrical connection.......................................................................................................... 15 
4.3 Additional information for electrical connection...................................................................................... 16 
5USER INTERFACE .............................................................................................................................. 17 
5.1 Preliminary information ...................................................................................................................... 17 
5.2 Keyboard (not available in the blind versions) ....................................................................................... 17 
5.3 Signalling LEDs ................................................................................................................................. 17 
6OPERATION ...................................................................................................................................... 19 
6.1 Switch on and resynchronization ......................................................................................................... 19 
6.2 Operating mode ................................................................................................................................ 21 
6.2.1 Preliminary information .............................................................................................................. 21 
6.3 Stand-by and operation mode selection................................................................................................ 21 
6.4 Enabling PSD04................................................................................................................................. 22 
6.5 Analog positioner control .................................................................................................................... 22 
6.6 Algorithm start-up ............................................................................................................................. 23 
6.7 Manual mode .................................................................................................................................... 23 
6.8 Debugging mode ............................................................................................................................... 24 
6.9 Superheat control algorithm ............................................................................................................... 24 
7CONFIGURATION............................................................................................................................... 26 
7.1 Unit of measurements........................................................................................................................ 26 
7.2 Configuring a built-in display version ................................................................................................... 26 
7.3 Configuring a blind version ................................................................................................................. 31 
7.4 Configuring the device through the programming key PSKEY10............................................................... 32 
7.5 Connecting the device through the set-up software system Parameters Manager....................................... 33 
7.6 Main menu ....................................................................................................................................... 33 
7.7 Backup and restore............................................................................................................................ 34 
7.8 List of configuration parameters .......................................................................................................... 35 
8SERIAL COMMUNICATION .................................................................................................................. 53 
8.1 Preliminary information ...................................................................................................................... 53 
8.2 CANBUS serial communication ............................................................................................................ 53 
8.3 MODBUS serial communication............................................................................................................ 55 
9ALARMS AND ERRORS........................................................................................................................ 56 
9.1 Alarms and errors.............................................................................................................................. 56 
9.2 Memory error.................................................................................................................................... 56 
9.3 Configuration error ............................................................................................................................ 56 
9.4 Communication error ......................................................................................................................... 57 
9.5 Probe error ....................................................................................................................................... 58