Instructions
EKC 531D1
Identifi cation
Principle
Dimensions
084B8007
RI8HU352 12-2004
Connections
ENGLISH
Brine cooling
All inputs are low-voltage.
All relay outputs may be
high-voltage.
Data communication
Necessary connections
Terminals:
1-2 Supply voltage 24 V a.c.
4- 19 Relay outputs for either compressors, unloaders or
fan motors
22-24 Alarm relay *
There is connection between 22 and 24 in alarm situa tions
and when the controller is dead
27-28 24 V signal to start / stop of regulation
27-29 24 V signal from the safety circuit DO 1
27-30 24 V signal from the safety circuit DO 2
27-31 24 V signal from the safety circuit DO 3
27-32 24 V signal from the safety circuit DO 4
27-33 24 V signal from the safety circuit DO 5
27-34 24 V signal from the safety circuit DO 6
27-35 24 V signal from the safety circuit DO 7
27-36 24 V signal from the safety circuit DO 8
57-59 Suction pressure. Voltage signal from AKS 32R **
60-62 Condenser pressure. Voltage signal from AKS 32R **
54-55 Out temperature (Sc3). Sensor signal from AKS 11,
AKS 12 or EKS 111
Unloader
If an output is used for an unloader it is
not neccessary to wire the belonging
safety circuit.
*) Relays DO9 and DO10 may in special cases be reconfi gurated so that they can be
used as fan relays.
**)
• If the controller has to control only the comrpessor or the fans, respectively Pc and
Pc sensor can be dispensed
• In brine systems temperature measurement at terminals 57-58 and 60-61 may be
used instead of pressure measurement with AKS 32R. See also o06.
Application dependent connections
20-21 AKD start/stop *
The relay cutin when the frequency converter have to
start.
37-38 Voltage signal to external condenser control
39-41 Possibility of connecting an external display type
EKA 161 for display of Pc
42-44 Possibility of connecting an external display type
EKA 161 for display of P0, or EKA 162 for operation and
display of P0
45-46 Contact function for alarm signal
45-47 Contact function for alarm signal
48-49 Contact function for alarm signal
48-50 Contact function for displacement of the suction
pressure reference or for alarm signal.
51-52 Contact function for displacement of the condenser
pressure reference or for alarm signal.
51-53 Separate sensor Saux1. Sensor signal fra AKS 11,
AKS 12 or EKS 111
54-56 Air temperature at condenser outlet. Sensor signal
from AKS 11, AKS 12 or EKS 111
Data communication
25-26 Mount only, if a data communication module has
been mounted.
For ethernet communication the plug connection RJ45
must be used. (LON FTT10 can also be connected in this
way.
It is important that the installation of the data commu-
nication cable be done correctly. Cf. separate literature
No. RC8AC..
The termination bracket is placed to the right of
terminal 26.
2 Instructions RI8HU352 © Danfoss 12/2004 EKC 531D1
Compressor confi guration
Setting "C16" will defi ne the confi guration.
Setting "C08" will defi ne coupling mode.
Compressor connections
Relay no.
Set
"C16"
to
Coupling
mode
Set
"C08"
to
Capacity step
All capacity steps are presumed to
be identical. The only exception is
the settings C16 = 0, 4, and 21 to 26.
Coupling mode
Coupling mode 1 = sequential
operation.
Coupling mode 2 = cyclic operation.
Coupling mode 3 = cyclic and binary
operation where the compressor
capacities are, as follows:
1: 9%
2: 18%
3: 36%
4: 36%
There is cyclic coupling at 3 and 4,
and binary on 1, 2 and 3/4.
(for c16=4 only)
Couplings
When there is cyclic operation and
connections with unloaders there
will in some capacity cutins and
cutouts be overlappings where
the unloaders from either one
compressor or another may be
active.
In such cases the unloaders on the
compressor with the lowest number
of hours will be cut in, and the others
cut out.
The changeover will take place at
6-second intervals.
Equalised operation
When C16 = 21 to 26, compressor
1 + belonging unloader must have
the same capacity as each of the
subsequent compressors. The
unloading function will equalise the
cut-in capacity when the subsequent
compressors are cut in and out.
Compressor 1 will always be
operating.
User-defi ned combination.
Condenser couplings
When the compressor relays have been established the turn
comes to the fan relays.
The fi rst vacant relay (DO1-DO8) will become the fi rst fan relay.
It will be followed by the subsequent relays. If more relays are
required than the vacant DO relays, a relay module can be
connected to the analog output. The function is, as follows:
If there are up to four external fans on an EKC 331:
Output signal from EKC 531D1
In EKC 331 the voltage range must be set to 0-5 V (“o10” = 6).
In EKC 331 the number of steps must be set to 4 (“o19” = 4) (also when
fewer fans are connected).
Connection
If there are more than four external fans on two EKC 331 units:
1. 2.
Output signal from EKC 531D1
In the fi rst EKC 331, set 0-5 V (“o10” = 6).
In the second EKC 331, set 5-10 V (“o10” = 7).
In both EKC’s the number of steps must be set to 4 (“o19” = 4) (also when
fewer fans are connected to the second EKC).
Connection
If the entire condenser capacity is to be controlled by a
frequency converter, EKC 531D1 must send an analog
signal about the required capacity (“c29” = 9).
The signal varies from 0 to 10 V. Signal and capacity
have the following context.
EKC 531D1 Instructions RI8HU352 © Danfoss 12/2004 3
Operation
Display
The values will be shown with three digits, and with a setting you
can determine whether the pressures are to be shown in °C or i °F.
EKA 162
For operation and display of
evaporating pressure. The
light-emitting diodes on the
left-hand side fl ash when
there is an alarm.
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
Gives access to changes
Saves a change
Operation
1. Push the upper button until a parameter is shown
2. Push one of the buttons and fi nd 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
During operation it is possible to show the condensing pressure
on the display EKA 162 by pushing the lower button short.
Quick- start
If you wish to start the system in a hurry so that refrigeration can
be commenced you can set the following eight parameters: r23
– r28 – c08 – c09 – c16 – c29 – o30, and fi nally r12.
When regulation has then started you can go through the
remaining parameters and adjust these.
Literature survey:
Manual EKC 531D1 RS8DD--Installation guide, Data communication link RC8AC---
Factory setting
If you need to return to the factory-set values, it can be done in this way:
- Cut out the supply voltage to the controller
- Keep both buttons depressed at the same time as you recon nect the supply voltage
EKA 161
For display of condensing
pressure.
(or cutout an alarm)
Menu survey EKC 531D1
Para-
Function
Normal display
Shows P0 in EKA 162 (display with buttons)
Shows Pc in EKA 161 - °C
P0 reference
Neutral zone r01 0.1 °C 20 °C 4.0
Correction of signal from P0 sensor r04 -10 °C 10 °C 0.0
Select unit (0=bar and °C, 1=Psig and °F) r05 0 1 0
Start/Stop of regulation r12 OFF ON 1
Reference off set for P0 r13 -20 °C 20 °C 0.0
Set regulation setpoint for P0 r23 -99 °C 30 °C 0.0
Shows total P0 reference r24 °C 0.0
Limitation: P0 reference max. value * r25 -99 °C 30 °C 30.0
Limitation: P0 reference min. value * r26 -99 °C 0 °C -99.9
Displacement of P0 (ON=active “r13”) r27 OFF ON 0
Pc reference
Set regulation setpoint for Pc r28 -25 °C 75 °C 35
Shows total Pc reference r29 °C 10
Limitation: Pc referencen max. value r30 -99 °C 99 °C 99.9
Limitation: Pc referencen min. value r31 -99 °C 99 °C -99.9
Correction of signal from Pc sensor r32 -10 °C 10 °C 0.0
Pc reference variation.1 and 2 are PIregulation
1: Fixed reference. “r28” is used
2: Variable reference. Outdoor temperature (Sc3) included in the reference
3: As 1, but with P-regulation (Xp-band)
4: As 2, but with P-regulation (Xp-band)
Reference off set for Pc r34 -20 °C 20 °C 0.0
Capacity
Min. ON time for relays c01 0 min 30 min. 0
Min. time period between cutins of same
relay
Defi nition of regulation mode
1: Sequential (step mode / FILO)
2: Cyclic (step mode / FIFO)
3: Binary and cyclic
If a regulation mode with unloaders is
selected, the relay must be defi ned to:
0: Cut in when more capacity is required
1: Cut out when more capacity is required
Regulation parameter for + Zone c10 0.1 K 20 K 4.0
Regulation parameter for + Zone c11 0.1 min 60 min 4.0
Regulation parameter for ++ Zone c12
Regulation parameter for - Zone c13 0.1 K 20 K 4.0
Regulation parameter for - Zone c14
Regulation parameter for - - Zone c15
Defi nition of compressor connections.See
options on page 10.
The following “c17” to “c28” is only relevant
if “c16” has been selected to 0.
A code will then have to be set for the
relays that are to be ON at the diff erent
steps:
Step 1 (M&M operation)
Step 2 (M&M operation) c18 0 15 0
Step 3 (M&M operation) c19 0 15 0
* also applies to regulation with reference displacement
Min. Max. Factory
meter
-°C
r33 1 4 1
c07 0 min. 60 min 4
c08 1 3 1
c09 0 1 0
0.1
min.
0.1
min.
0.02
min.
c16 0 26 0
c17 0 15 0
SW: 1.22
setting
20 min 2.0
60 min 1.0
20 min 0.5
Continues...
4 Instructions RI8HU352 © Danfoss 12/2004 EKC 531D1
Step 4 (M&M operation) c20 0 15 0
Step 5 (M&M operation) c21 0 15 0
Step 6 (M&M operation) c22 0 15 0
Step 7 (M&M operation) c23 0 15 0
Step 8 (M&M operation) c24 0 15 0
Step 9 (M&M operation) c25 0 15 0
Step 10 (M&M operation) c26 0 15 0
Step 11 (M&M operation) c27 0 15 0
Step 12 (M&M operation) c28 0 15 0
Defi nition of condenser:
1-8: Total number of fan relays
9: Only via analog output and start of
frequency converter
Proportinal band Xp for (P= 100/Xp) condenser regulation
I: Integration time Tn for condenser regulation
Alarm
Delay time for a "Saux1" alarm A03 0 min. 90 min 30
Low alarm and safety limit for P0 A11 -99°C 30°C -10
Delay time for a DI1 alarm A27 1 s
Delay time for a DI2 alarm A28 1 s
Delay time for a DI3 alarm A29 1 s
Upper alarm and safety limit for Pc A30 -10 °C 99 °C 60.0
Upper alarm limit for sensor "Saux1" A32
Miscellaneous
Controllers address o03* 1 60
On/off switch (service-pin message) o04* - Access code o05 off (-1) 100
Used sensor type for Sc3, Sc4 and "Saux1"
0=PT1000, 1=PTC1000
2-7=variations with temperature sensor
on P0 and Pc. See earlier in the manual.
Set supply voltage frequency o12 50 Hz 60 H 0
Manual control of outputs:
0: No override
1-10: 1 will cut in relay 1, 2 relay 2, etc.
11-18: Gives voltage signal on the analog
output. (11 gives 1.25 V, and so on in steps
of 1.25 V
P0 pressure transmitter’s working range
- min. value
P0 pressure transmitter’s working range
- max. value
Use of DI4-input
0=not used. 1=P0 displacement. 2=alarm
function. Alarm="A31"
Operating hours of relay 1 (value time
1000)
Operating hours of relay 2 (value time
1000)
Operating hours of relay 3 (value time
1000
Operating hours of relay 4 (value time
1000)
Setting of refrigerant
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 defi ned. 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
Use of DI5-input
0=not used. 1=Pc displacment. 2=alarm
function. Alarm="A32"
Pc pressure transmitter’s working range
- min. value
c29 0/OFF 9 0
n04 0.2 K 40 K 10
n05 30 s 600 s 150
600 s
600
/off
600 s
600
/off
600 s
600
/off
0 °C
140°C 0.0
/off
o06 0 7 0
o18 0 18 0
o20 -1 bar 0 bar -1.0
o21 1 bar 40 bar 12.0
o22 0 2 0
o23 0.0 h 99.9 h 0.0
o24 0.0 h 99.9 h 0.0
o25 0.0 h 99.9 h 0.0
o26 0.0 h 99.9 h 0.0
o30 0 30 0
o37 0 2 0
o47 -1 bar 0 bar -1.0
Pc pressure transmitter’s working range
- max. value
Read temperature at sensor "Saux1" o49 0.0 °C °C 22.4
Operating hours of relay 5 (value time
1000)
Operating hours of relay 6 (value time
1000)
Operating hours of relay 7 (value time
1000)
Operating hours of relay 8 (value time
1000)
Service
Read temperature at sensor "Sc3" u44 °C 23.5
Read temperature at sensor "Sc4" u45 °C 8.1
*) This setting will only be possible if a data communication moduel has
been installed in the controller.
The controller can give the following messages
E1 Error
message
E2 Regulation is outside the range, or the control
A2 Alarm
message
A11 Refrigerant not selected
A17 High Pc
A19 DO 1 alarm. Terminal 29 is open
A20 DO 2 alarm. Terminal 30 is open
A21 DO 3 alarm. Terminal 31 is open
A22 DO 4 alarm. Terminal 32 is open
A23 DO 5 alarm. Terminal 33 is open
A24 DO 6 alarm. Terminal 34 is open
A25 DO 7 alarm. Terminal 35 is open
A26 DO 8 alarm. Terminal 36 is open
A27 Room temperature alarm (housing temp.)
A28 DI 1 alarm. Terminal 46 interrupted
A29 DI 2 alarm. Terminal 47 interrupted
A30 DI 3 alarm. Terminal 49 interrupted
A31 DI 4 alarm. Terminal 50 interrupted
A32 DI 5 alarm. Terminal 52 interrupted
A45 Regulation stopped
S2 Status
message
S5 Wait for “c07”
S8 Wait for “c11” or “c12”
S9 Wait for “c14” or “c15”
S10 Refrigeration stopped by the internal or external
PS Info Access code is required before you have access to
Fault in controller
signal is defective
Low P0
Wait for “c01”
start/stop function
the settings
o48 1 bar 60 bar 34.0
o50 0.0 h 99.9 h 0.0
o51 0.0 h 99.9 h 0.0
o52 0.0 h 99.9 h 0.0
o53 0.0 h 99.9 h 0.0
EKC 531D1 Instructions RI8HU352 © Danfoss 12/2004 5
Tilslutninger
DANSK
Brinekøling
Alle indgange er lavvolt.
Alle relæudgange kan
være højvolt.
Datakommunikation
Nødvendige tilslutninger
Klemme:
1-2 Forsyningsspænding 24 V a.c.
4- 19 Relæudgange til enten kompressorer, afl astninger eller
ventilatormotorer
22-24 Alarmrelæet *
Der er forbindelse imellem 22 og 24 i alarmsituationer, og
når regulatoren er spændingsløs.
27-28 24 V signal til start / stop af reguleringen
27-29 24 V signal fra sikkerhedskredsen DO 1
27-30 24 V signal fra sikkerhedskredsen DO 2
27-31 24 V signal fra sikkerhedskredsen DO 3
27-32 24 V signal fra sikkerhedskredsen DO 4
27-33 24 V signal fra sikkerhedskredsen DO 5
27-34 24 V signal fra sikkerhedskredsen DO 6
27-35 24 V signal fra sikkerhedskredsen DO 7
27-36 24 V signal fra sikkerhedskredsen DO 8
57-59 Sugetryk. Spændingssignal fra AKS 32R **
60-62 Kondensatortryk. Spændingssignal fra AKS 32R **
54-55 Udetemperatur (Sc3). Følersignal fra AKS 11, AKS 12 eller
EKS 111
Afl astning
Hvis en udgang anvendes til en
afl astning, er det ikke nødvendigt, at
fortråde den tilhørende sikkerhedskreds.
Applicationbestemte tilslutninger
20-21 AKD start/stop *
Relæet slutter når frekvensomformeren skal starte.
37-38 Spændingssignal til ekstern kondensatorstyring
39-41 Mulighed for at tilslutte et eksternt display type EKA 161
(Pc-visning)
42-44 Mulighed for at tilslutte et eksternt display type EKA 161
til P0-visning, eller EKA 162 til betjening og P0-visning
45-46 Kontaktfunktion til alarmsignal
45-47 Kontaktfunktion til alarmsignal
48-49 Kontaktfunktion til alarmsignal
48-50 Kontaktfunktion til forskydning af sugetryksreferencen
eller til alarmsignal.
51-52 Kontaktfunktion til forskydning af kondensatortryksrefer-
encen eller til alarmsignal.
51-53 Separat føler Saux1. Følersignal fra AKS 11, AKS 12 eller EKS
111
54-56 Lufttemperatur ved kondensatorens afgang. Følersignal fra
AKS 11, AKS 12 eller EKS 111
Datakommunikation
25-26 Monteres kun, hvis der også er monteret et datakommu-
nikationsmodul.
Hvis det er en ethernetkommunikation skal stiktilslutningen RJ45 anvendes. (LON FTT10 kan også tilsluttes på
denne måde.)
Det er vigtigt, at installationen af datakommunikationskablet udføres korrekt.
Se separat litteratur nr. RC8AC..
Termineringsbøjlen er placeret til højre for klemme 26.
*) Relæerne DO9 og DO10 kan i specialtilfælde omkonfi gureres, så de kan anvendes
til ventilatorrelæ. Se yderligere side 8.
**)
• Hvis regulatoren kun skal styre kompressorer eller kun skal styre ventilatorer, kan Pc
henholdsvis Pc føleren undværes.
• På brineanlæg kan der i stedet for trykmåling med AKS 32R anvendes temperatur-
måling på klemme 57-58 og 60-61. Se også o06.
6 Instructions RI8HU352 © Danfoss 12/2004 EKC 531D1
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