10
Manual RS8FM602 © Danfoss 02-2016
EKC
326A
Light-emitting diodes (LED) on front panel
The four LED’s will flash, if 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 controller can give the following messages:
E1
Error message
Fault in controller
E15
Cut-out Sgc sensor
E16
Short circuited Sgc sensor
E20
Fault on the signal from Pgc
E39
Fault on the signal from Prec
A43
Alarm message
Step motor error. Output or phase
A45
Regulation stopped. Main switch r12 = off
A82
The Pgc gas pressure measured is higher than the
maximum limit for n69
A83
The Pgc gas pressure measured is lower than Pgc
min (A65)
A84
The receiver pressure measured is lower than "n71"
minus "n72"
A94
Pgc alarm limit "A66" is exceeded
A95
Prec alarm limit "A67" is exceeded
Display
The values will be shown with three digits.
Temperature are to be shown in °C and pressure in bar.
Operation
Menu survey
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 a 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
SW =2.0x
**) 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 fx. 250 will give a setting of 2500.
Function
Para-
meter
Min.
Max.
Factory
setting
Normal display
Shows the current pressure after the gas cooler
Pushing both buttons briefly will display the
reference
Pushing the bottom button briefly will display
Prec.
-
bar
Start / stop
Start / stop of regulation
r12
OFF (0) On (1)
On (1)
Ramp for reference after heat recovery
r65
0.1
20
1
Displacement of the Pgc minimum reference
(n89) during heat recovery. (Displacement value
at 10 V)
r68
0 bar
100 bar 0
Alarm Settings
Alarm limit for Pgc Min.
A65
0 bar
200 bar 40
Permitted Pgc reference variation
0 = no alarm function (recommended)
A66
0 bar
50 bar
0
Permitted Prec reference variation
0 = no alarm function (recommended)
A67
0 bar
50 bar
0
Delay time for 'A94' Pgc reference alarm
A68
5 min. 360 min 15
Delay time for 'A95' Prec reference alarm
A69
5 min. 360 min 15
Regulating parameters
Actuator type for receiver control
0=ETS12,5/25 / CCM10/20,
1=ETS50 / CCM30, 2=ETS100 / CCM40,
3=ETS250, 4=ETS400,
5=User defined (set: n37 and n38)
6=CCMT2/4/8
n03
0
6
0
P: Amplification factor Kp
n04
0.5
20
2.0
I: Integration time Tn
n05
10 s
600 s
75
Max. opening degree. of the valve
n32
0
100
100
Number of steps from 0-100% opening degree
(x10) **
n37
0
500
262
Number of steps per second
n38
0
300
250
Max. permitted receiver pressure, Prec
n58
10 bar 200 bar 60
P-belt beyond PrecMax for valve to close
n59
0 bar
60 bar
0
P: Amplification factor Kp for receiver
n60
0.5
20
5
I: Integration time Tn for receiver
n61
10
600
75
The gas cooler’s max. pressure
This is where you set the maximum pressure per-
mitted in the gas cooler. If the pressure reaches
this value, the valve is fully open.
n69
7
200
90
P-band under n69, so the valve is fully open if
the pressure is n69.
n70
0
60
5
Min. pressure in the receiver
This function is only used if the pressure trans-
mitter Prec is mounted.
n71
7
60
30
P-band to force open the valve if the receiver
pressure is too low
n72
0
60
3
Subcooling is required to be regulated accord-
ing to temperature
Set the desired subcooling in K.
n79
1 K
30 K
1
The gas cooler’s min. pressure
n81
7
200 bar 45
Min. permissible opening degree for ICMTS
n87
0
100%
0
Extra capacity when the contact is closed.
(The Pgc reference is increased with this value)
n88
0 bar
200 bar 0
Minimum permitted Pgc reference during heat
recovery (AI > 2 V). The value can be increased
further using the r68 function.
n89
7 bar
200 bar 7
Do you require receiver pressure control: Off=no,
On=yes
n90
Off
On
On
Prec. reference for receiver pressure control
n91
7 bar
200 bar 35
Receiver pressure control. Maximum opening
degree for ETS
n92
0%
100%
100
Receiver pressure control. Smallest opening
degree for ETS
n93
0%
100%
0
Define the reference curve point at 100 bar.
n99
35°C
55°C
39