8
User
Guide RS8FZ402 © Danfoss 2015-07
EKC
313
Light-emitting diodes (LED) on front panel
All 4 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 controller can give the following messages:
E1
Error message
Fault in controller
E15
Cut-out S2 sensor
E16
Short circuited S2 sensor
E17
Cut-out S3 sensor
E18
Short circuited S3 sensor
E20
Fault on signal from Pc
E39
Fault on signal from P0
A11
Alarm message
No refrigerant has been selected
A43
Step motor fault. Output or phase
A45
Regulation stopped. Main switch r12 = off
Display
The values will be shown with three digits.
Temperature are 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 of a menu
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
Function
Para-
meter Min.
Max.
Fac.set-
ting
Normal display
Displays either the valve's current opening degree or the current superheat value.
(Can be set in o17)
Briefly pushing the bottom button will display one of the two readings.
Briefly pushing both buttons will display the superheat reference (u22).
Start / stop
Start / stop af regulation
r12
OFF (0) On (1)
On (1)
Regulating parameters
Select valve type:
0=ETS 12,5 & 25 / CCM10 & CCM20
1=ETS 50 / CCM30, 2=ETS 100 / CCM40
3=ETS 250, 4=ETS 400,
5=User defined (set : n37 and n38)
6=0-10 V's output must control ICAD actuator
7=0-10 V's output must on/off control a solid
state relay.
n03
0
7
0
I: Integration time Tn
n05
5 s
600 s
90
D: Differentiation time Td
n06
0 s
60 s
0
Max. value of superheat reference
n09
3 K
60 K
40
Min. value of superheat reference
n10
3 K
40 K
10
MOP (max. = Off)
n11
0 bar
60 bar
60
Signal reliability during start-up. Time for safety.
Should only be changed by trained staff
n15
0 s
240 s
0
Signal reliability during start-up – Opening
degree’s start value. Should only be changed by
trained staff.
n17
0%
100%
0
Kp amplification just around reference value
Changes should only be made by trained staff
n19
0
30
3
Amplification factor for superheat. (KpT0)
Changes should only be made by trained staff
n20
0
30
5
Max. opening degree of valve
n32
0%
100%
100
Number of steps from 0-100% opening degree
(x10) **
n37
0
500
263
Number of steps per second
n38
0
300
250
Max. Kp factor for PID-regulation (Kp max)
n95
0
30
5
Calculation factor for superheat SH
Changes should only be made by trained staff
n96
10
100
50
Filter constant for SH reference
Changes should only be made by trained staff
n97
5 s
600 s
60
Lower limit value for the condensing pressure
n98
-30°C
10°C
-5
Miscellaneous
Controller’s address (0 = off)
o03*
0
119
0
ON/OFF switch (service-pin message)
o04*
-
-
-
Set supply voltage frequency
o12
50Hz (0) 60 Hz (1) 0
Select display view for the "normal display"
1: Opening degree of the valve
2: Superheat
o17
1
2
1
Manual control of outputs:
0: Normal regulation
1: Overriding. Manual control permitted
o18
0
1
0
Pressure transmitter selection
1: AKS 32R / AKS 2050
2: Pressure transmitter with 0-10 V
3: Pressure transmitter with 1-5 V
o10
1
3
1
Working range for pressure transmitter Pc - min. o20
-1 bar 5 bar
-1
Working range for pressure transmitter Pc - max. o21
6 bar
199 bar 59
Refrigerant setting for P0 circuit
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.
30=R417A. 31=R422A. 32=R413A. 33=R422D.
34=R427A. 35=R438A
o30
0
35
0
Relay application: 0=Alarm relay. 1=EVR valve i
liquid line
o36
0
1
0
Forced control of the valves opening degree.
(Only if o18 is set to manual)
o45
0
100%
0
Working range for pressure transmitter P0 - min. o47
-1 bar 5 bar
-1
SW =2.0x
*) This setting will only be possible if a data communication module has been installed in the
controller.
**) 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.