Menu Survey; Operation - Danfoss EKC 326A User Manual

Operation

Display
The values will be shown with three digits.
Temperature are to be shown in °C and pressure in bar.
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 Fault in controller
E15 Cut-out Sgc sensor
E16 Error message Short circuited Sgc sensor
E20 Fault on the signal from Pgc
E39 Fault on the signal from Prec
A43 Step motor error. Output or phase
A45 Regulation stopped. Main switch r12 = off
The Pgc gas pressure measured is higher than the
A82
maximum limit for n69
The Pgc gas pressure measured is lower than Pgc
A83
Alarm message min (A65)
The receiver pressure measured is lower than "n71"
A84
minus "n72"
A94 Pgc alarm limit "A66" is exceeded
A95 Prec alarm limit "A67" is exceeded
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
10 Manual RS8FM602 © Danfoss 02-2016

Menu survey

Function
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.
Start / stop
Start / stop of regulation
Ramp for reference after heat recovery
Displacement of the Pgc minimum reference
(n89) during heat recovery. (Displacement value
at 10 V)
Alarm Settings
Alarm limit for Pgc Min.
Permitted Pgc reference variation
0 = no alarm function (recommended)
Permitted Prec reference variation
0 = no alarm function (recommended)
Delay time for 'A94' Pgc reference alarm
Delay time for 'A95' Prec reference alarm
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
P: Amplification factor Kp
I: Integration time Tn
Max. opening degree. of the valve
Number of steps from 0-100% opening degree
(x10) **
Number of steps per second
Max. permitted receiver pressure, Prec
P-belt beyond PrecMax for valve to close
P: Amplification factor Kp for receiver
I: Integration time Tn for receiver
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.
P-band under n69, so the valve is fully open if
the pressure is n69.
Min. pressure in the receiver
This function is only used if the pressure trans-
mitter Prec is mounted.
P-band to force open the valve if the receiver
pressure is too low
Subcooling is required to be regulated accord-
ing to temperature
Set the desired subcooling in K.
The gas cooler's min. pressure
Min. permissible opening degree for ICMTS
Extra capacity when the contact is closed.
(The Pgc reference is increased with this value)
Minimum permitted Pgc reference during heat
recovery (AI > 2 V). The value can be increased
further using the r68 function.
Do you require receiver pressure control: Off=no,
On=yes
Prec. reference for receiver pressure control
Receiver pressure control. Maximum opening
degree for ETS
Receiver pressure control. Smallest opening
degree for ETS
Define the reference curve point at 100 bar.
**) 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.
SW =2.0x
Para- Factory
Min. Max.
meter setting
- bar
r12 OFF (0) On (1) On (1)
r65 0.1 20 1
r68 0 bar 100 bar 0
A65 0 bar 200 bar 40
A66 0 bar 50 bar 0
A67 0 bar 50 bar 0
A68 5 min. 360 min 15
A69 5 min. 360 min 15
n03 0 6 0
n04 0.5 20 2.0
n05 10 s 600 s 75
n32 0 100 100
n37 0 500 262
n38 0 300 250
n58 10 bar 200 bar 60
n59 0 bar 60 bar 0
n60 0.5 20 5
n61 10 600 75
n69 7 200 90
n70 0 60 5
n71 7 60 30
n72 0 60 3
n79 1 K 30 K 1
n81 7 200 bar 45
n87 0 100% 0
n88 0 bar 200 bar 0
n89 7 bar 200 bar 7
n90 Off On On
n91 7 bar 200 bar 35
n92 0% 100% 100
n93 0% 100% 0
n99 35°C 55°C 39
EKC 326A