Danfoss EKC 302A Instructions Manual page 5

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