Danfoss EKC 302A, Instructions Manual, Page: 5 / 12

EKC 302A, B Instructions RI8PK153 © Danfoss 08/2011 5
Start-up:
Regulation starts when the voltage is on.
1 Go through the survey of factory settings. Make any necessary changes in the respective parameters.
2 For network. Set the address in o03 and then transmit it to the gateway/system unit with setting o04.
English
The buttons
Set menu
1. Push the upper button until a parameter
is shown
2. Push the upper or the lower button and
find that parameter you want to change
3. Push the middle button until the
parameter value is shown
4. Push the upper or the lower button and
select the new value
5. Push the middle button again to enter
the value.
Set temperature
1. Push the middle button until the
temperature value is shown
2. Push the upper or the lower button and
select the new value
3. Push the middle button to select the
setting.
Reading the temperature at sensor S5
• Push briefly the lower button
Manuel start or stop of a defrost
• Push the lower button for four
seconds.
Light emitting diode
= refrigeration
= defrost
= fan running
Flashes fast at alarm
Cutout alarm relay / see alarm code
• Push briefly the upper button
SW = 1.0x
Parameters Controller
Min.-
value
Max.-
value Factory
setting
Actual
setting Function Codes
EKC
302A
EKC
302B
Normal operation
Temperature (set point) --- -50°C 50°C 2°C
Thermostat
Differential r01 0,1 K 20 K 2 K
Max. limitation of set point setting r02 -49°C 50°C 50°C
Min. limitation of set point setting r03 -50°C 49°C -50°C
Adjustment of temperature indication r04 -20 K 20 K 0.0 K
Temperature unit (°C/°F) r05 °C °F °C
Correction of the signal from Sair r09 -10 K 10 K 0 K
Manual service(-1), stop regulation(0), start regulation (1) r12 -1 1 1
Displacement of reference during night operation r13 -10 K 10 K 0 K
Activation of reference displacement r40 r39 OFF on OFF
Value of reference displacement (activation by r39 or DI) r40 -50 K 50 K 0 K
Alarm
Delay for temperature alarm A03 0 min 240 min 30 min
Delay for door alarm A04 0 min 240 min 60 min
Delay for temperature alarm after defrost A12 0 min 240 min 90 min
High alarm limit A13 -50°C 50°C 8°C
Low alarm limit A14 -50°C 50°C -30°C
Alarm delay DI1 A27 0 min 240 min 30 min
High alarm limit for condenser temperature (o70) A37 0°C 99°C 50°C
Compressor
Min. ON-time c01 0 min 30 min 0 min
Min. OFF-time c02 0 min 30 min 0 min
Compressor relay must cutin and out inversely (NC-function) c30 0 / OFF 1 / on 0 / OFF
External relays (Zero crossing control – only EKC 302)
Must be 'ON' when connecting to external relays c70 OFF On On
Defrost
Defrost method (none/EL/gas) d01 no gas EL
Defrost stop temperature d02 0°C 25°C 6°C
Interval between defrost starts d03 0 hours 48 hours 8 hours
Max. defrost duration d04 0 min 180 min 45 min
Displacement of time on cutin of defrost at start-up d05 0 min 240 min 0 min
Drip off time d06 0 min 60 min 0 min
Delay for fan start after defrost d07 0 min 60 min 0 min
Fan start temperature d08 -15°C 0°C -5°C
Fan cutin during defrost
0: Stopped
1: Running
2: Running during pump down and defrost
d09 0 2 1
Defrost sensor (0=time, 1=S5, 2=Sair) d10 0 2 0
Max. aggregate refrigeration time between two defrosts d18 0 hours 48 hours 0 hours
Defrost on demand - S5 temperature’s permitted variation during frost build-up. On
central plant choose 20 K (=off) d19 0 K 20 K 20 K
Fans
Fan stop at cutout compressor F01 no yes no
Delay of fan stop F02 0 min 30 min 0 min
Fan stop temperature (S5) F04 -50°C 50°C 50°C
Real time clock
Six start times for defrost.
Setting of hours.
0=OFF t01-t06 0 hours 23 hours 0 hours