Settings And Checks To Be Made Before Start; Basic Settings - Danfoss EKC 316A Reference Manual

Setting and checks to be made before
start

Basic Settings

Before using the EKC 316A controller, there are settings that
have to be made for each individual application. These are the
refrigerant type, the pressure transducer range and the total
number of steps for the ETS valve. It is good practice and some
cases necessary to set the Main Switch r12 to OFF when making
these changes.
Refrigerant Type.
It is possible to choose from a list of 28 different refrigerants in the
controller. If refrigerant is not found on the list, it is possible using
AKM and setting o30 to 13 to plug in the Antione constants for the
unlisted refrigerant.
Refrigerant setting
Before refrigeration can be started, the refrigerant must be defined. You can select the
following refrigerants:
1=R12. 2=R22. 3=R134a. 4=R502. 5=R717. 6=R13. 7=R13b1. 8=R23. 9=R500.
10=R503. 11=R114. 12=R142b. 13=User defined. 14=R32. 15=R227. 16=R401A.
17=R507. 18=R402A. 19=R404A. 20=R407C. 21=R407A. 22=R407B. 23=R410A.
24=R170. 25=R290. 26=R600. 27=R600a. 28=R744. 29=R1270.
(Warning: Wrong selection of refrigerant may cause damage to the compressor).
ETS Valve type
Each ETS valve has a specified number of steps as given below:
Total steps
The number of steps can be set in the controller at address n37:
The parameters "n37" to "n42" are settings for step motor ETS 100. The settings
in n37 must be changed when another valve is used. The other settings should
not be changed.
Number of steps from 0% to 100% open
In practise, the EKC316A display can only manage 3 digits.
Therefore the set value at address n37 is always 10 times greater
i.e. if n37 is set to 263 then the true value is 2630. The same applies
to the n37 address in the AKM system.
"n37" to "n42" are adapted to valve type ETS 100 and should only be changed through the
use of another valve.
Number of steps from 0-100% opening degree (x10)
(ETS = 262. ETS 100 = 353)
The range of the pressure transmitter can be set by entering the
transmitter's minimum value at address o20 and maximum value
at address o21.
Working range for pressure transmitter
Depending on the application a pressure transmitter with a given working range
is used. This working range (say, -1 to 12 bar) must be set in the controller. The min.
value is set.
The max. value is set
4 Reference manual RS8ED102 © Danfoss 03-2006
o30 Refrigerant
ETS 50: 2625 [+160 / -0] steps
ETS 100: 3530 [+160 / -0] steps
ETS 250 and 400: 3810 [+160 / -0] steps
n37 Max. steps (0 - 5000 step)
n37 000 stp** 5000 stp ** 263
o20 MinTransPres.
o21 MaxTransPres.
EKC 316A