Danfoss EIM 336, Manual

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Contents
Introduction ....................................................................................................................................................................................................................................................1
Application and Function overview .......................................................................................................................................................................................................3
Technical specifications ..............................................................................................................................................................................................................................4
Ordering and accessories ...........................................................................................................................................................................................................................4
Connetions ......................................................................................................................................................................................................................................................5
Configurations ................................................................................................................................................................................................................................................6
Modbus connections ...................................................................................................................................................................................................................................7
Operation .........................................................................................................................................................................................................................................................8
Parameter list ............................................................................................................................................................................................................................................... 12
Troubleshooting ......................................................................................................................................................................................................................................... 15
Finding the optimum settings ............................................................................................................................................................................................................... 15
Appendix 1. Interactions ........................................................................................................................................................................................................................ 16
Appendix 2. Control status .................................................................................................................................................................................................................... 16
Appendix 3. Installation - sensors ....................................................................................................................................................................................................... 17
Warnings ....................................................................................................................................................................................................................................................... 17
Acronyms and abbreviations used in this manual:
LOC Loss of charge indication
SH Superheat
MOP Maximum operating pressure
MSS Minimum stable superheat
T
e
Saturated suction temperature
P
e
(P
o
) Evaporator pressure
S
2
Evaporator refrigerant outlet temperature
S
4
Evaporator medium outlet temperature
OD Opening degree
PNU Parameter number - is equivalent to the modbus register no. (modbus 1)
2 DKRCC.PS.RQ0.B7.02 /520H8832 © Danfoss A/S (AC-MCI / sw), 2014-11
Manual Superheat Controller EIM 336