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User Guide | Superheat controller, EKC 315A
Operation
Display
The values will be shown with three
digits, and with a setting you
determine whether the temperature are
to be shown in °C or in °F.
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 upper LED will indicate the valve's opening degree. A short
pulse indicates a small liquid flow and a long pulse a heavy liquid
flow. The other LED will indicate when the controller calls for
refrigeration.
The three lowermost LED's will flash, if there is an error in the regu-
lation.
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 push- ing. 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 simultane- ously.
Gives access to the menu (or cutout an alarm) Gives
access to changes
Saves a change
Examples of operations
Set set-point
1.
Push the two buttons simultaneously
2.
Push one of the buttons and select the new value
3.
Push both buttons again to conclude the setting
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
© Danfoss | DCS (ADAP-KOOL®) | 2015-03
can
Menu survey
Function
Normal display
Shows the actual superheat/ valve's opening degree/
temperature
Define view in o17
Temperature, superheating, or the temp. reference is
displayed if the bottom button is pressed briefly.
Define view in o17
Reference
Set the required set point
Differential
Units (0=°C+bar /1=°F+psig)
External contribution to the reference
Correction of signal from S2
Correction of signal from S3
Start / stop of refrigeration
Define thermostat function
(0= no thermostat function, 1=On/off thermostat)
Alarm
Upper deviation (above the temperature setting)
Lower deviation (below the temperature setting)
Alarm's time delay
Regulating parameters
P: Amplification factor Kp
I: Integration time T
D: Differentiation time Td (0 = off)
Max. value of superheat reference
Min. value of superheat reference
MOP (max = off)
Period time (only when AKV/A valve is used)
Stability factor for superheat control.
Changes should only be made by trained staff
Damping of amplification around reference value
Changes should only be made by trained staff
Amplification factor for superheat
Changes should only be made by trained staff
Definition of superheat control
1=MSS, 2=LOADAP
Value of min. superheat reference for loads under
10%
Standby temperature when valve closed (TQ valve
only)
Changes should only be made by trained staff
Standby temperature when valve open (TQ valve only)
Changes should only be made by trained staff
Max. opening degree
Changes should only be made by trained staff
Min. opening degree
Changes should only be made by trained staff
Miscellaneous
Controller's address
ON/OFF switch (service-pin message)
Define valve and output signal: 0:
Off
1: TQ. AO: 0-20 mA
2: TQ. AO: 4-20 mA
3: AKV, AO: 0-20 m
4: AKV, AO: 4-20 mA
5: AKV, AO: EKC 347-SLAVE
6: ICM, AO: 0-20 mA / ICM OD%
7: ICM, AO: 4-20 mA / ICM OD%
a
SW =1.4x
Para-
Min.
Max.
meter
-
-
-
-60°C
50°C
r01
0.1 K
20 K
r05
0
1
r06
-50 K
50 K
r09
-50.0 K 50.0 K
r10
-50.0 K 50.0 K
r12
OFF
On
r14
0
1
A01
3.0 K
20 K
A02
1 K
10 K
A03
0 min.
90 min. 30
n04
0.5
20
n05
30 s
600 s
n06
0 s
90 s
n09
2 K
50 K
n10
1 K
12 K
n11
0.0 bar
60 bar
n13
3 s
10 s
n18
0
10
n19
0.2
1.0
n20
0.0
10.0
n21
1
2
n22
1
15
n26
0 K
20 K
n27
-15 K
70 K
n32
0
100
n33
0
100
o03*
0
119
o04*
-
-
o09
0
7
DKRCI.PS.RP0.D2.02 | 520H7653 | 8
Factory
setting
K
%
10
2.0
0
0
0.0
0.0
0
0
5.0
3.0
3.0
120
0
6
4
60
6
5
0.3
0.4
1
2
0
20
100
0
-
-
0
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