Menu Survey - Danfoss EKC 312 User Manual

Manual
Operation
Display
The values will be shown with three digits, and with a setting you
can determine whether the temperature are to be shown in °C or
in °F. (Pressure in bar or psig.)
Light-emitting diodes (LED) on front panel
There are LED's on the front panel which will light up when the
belonging relay is activated.
The uppermost LED will indicate when the valve is moving
towards a greater opening degree.
The next LED will indicate when the valve is moving towards a
smaller opening degree.
All light-emitting diodes will flash when there is an error in the
regulation.
In this situation you can upload the error code on the display and
cancel the alarm by giving the uppermost button a brief push.
The buttons
When you want to change a setting, the two buttons will give
you a higher or lower value depending on the button you are
pushing. But before you change the value, you must have access
to the menu. You obtain this by pushing the upper button for a
couple of seconds - you will then enter the column with parameter
codes. Find the parameter code you want to change and push
the two buttons simultaneously. When you have changed the
value, save the new value by once more pushing the two buttons
simultaneously.
Gives access to the menu (or cutout an alarm)
Gives access to changes
Saves a change
Examples of operations
Set one of the other menus
1. Push the upper button until a parameter is shown
2. Push one of the buttons and find the parameter you want to
change
3. Push both buttons simultaneously until the parameter value is
shown
4. Push one of the buttons and select the new value
5. Push both buttons again to conclude the setting
*) The display on the controller can show 3 digits only, but the setting
value has 4 digits. Only the 3 most important will be shown.
It means f.ex. . 250 will give a setting of 2500.
8
Electronic superheat controller, type EKC 312
DKRCC.PS.R1.A3.02 / 520H9752

Menu survey

Function
Normal display
Shows the actual superheat/ valve's opening
degree/ temperature. Define view in o17
If you wish to see the expansion valve's actual
opening degree, give the lower button a brief
push (1s). Define view in o17
Reference
Units (0=°C+bar / 1=°F+psig)
Start/stop of refrigeration
Regulating parameters
P: Amplification factor Kp
I: Integration time T
Max. value of superheat reference
Min. value of superheat reference
MOP
Signal reliability during start-up. Safety time
period.
Should only be changed by trained staff.
Signal reliability during start-up – Opening
degree's start value. Should only be changed
by trained staff
Amplification factor for superheat
Changes should only be made by trained staff
Value of min. superheat reference for loads
under 10%
"n37" and "n38" are adapted to valve type ETS
50 and should only be changed through the
use of another valve
Number of steps from 0-100% opening degree
(x10)
(ETS 50=263, ETS 100=353)
ETS 12.5, ETS 25, ETS 50=263
ETS 100=353
ETS 250, ETS 400=381
Number of steps per second
Integration time for inner loop (TnT0)
Miscellaneous
Controller's address
ON/OFF switch (service-pin message)
Set supply voltage frequency
Select display for "normal picture"
1: Superheat
2: Valve's opening degree
3: Air temperature
Manual control of outputs:
OFF: no manual control
3: Alarm relay activated (cut out)
At settings 3, "o45" will be active
Working range for pressure transmitter – min.
value
Working range for pressure transmitter – max.
value
Refrigerant setting
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.
SW =1.2x
Fac.
Param. Min. Max.
setting
- K
- %
r05 0 1 0
r12 OFF On 1
n04 0.5 20 3
n05 30 s 600 s 120
n09 2 K 30 K 10
n10 1 K 12 K 4
n11 0.0 bar 20 bar 20
n15 0 s 90 s 0
n17 0% 100% 0
n20 0.0 10.0 0,4
n22 1 K 15 K 2
000 5000
n37 263
stp* stp *
10 300
n38 250
stp/s stp/s
n44 10 s 120 s 30
o03 *) 1 60
o04 *) - -
o12 50 Hz 60 Hz 50
o17 1 3 1
o18 off 3 0
o20 -1 bar 60 bar -1.0
o21 -1 bar 60 bar 12
o30 0 29 0
© Danfoss A/S (DCS-IMCGPD/sw), 2015-03