Danfoss EET Series User Manual

Parameter name
Code
Default
value
Min.
Max.
Description
Alarm Door open delay (Mins)
dod
2
0
60
Time delay to raise alarm if the door is kept open. If the door is closed before the
delay time, no alarm will be raised
Alarm delay during Pull Down/
Power up /defrost (Mins)
Pdd
60
0
960
Time delay to raise high temperature alarm during Pull Down, power-up and defrost
in order to avoid wrong alarm signal during these conditions
Leakage Alarm Compressor Run
Time (Hrs)
LEA
0
0
96
If the compressor operates continuously for more than the time congured in this
parameter a leakage alarm will be triggered. Generally this value must be set higher
than the Pull down duration "Pdd". "0": disable
Defrost
Table 18: Defrost
Parameter name
Code
Default
value
Min.
Max.
Description
Defrost
dEF
Defrost type
dFt
nAt
no
Hgd
It denes the required type of defrost:
"no" : defrost function is disabled
"nAt" : Natural defrost (OFF-cycle defrost)
"EL" : electrical defrost
"Hgd" : hot gas defrost
Minimum defrost Interval (Mins)
dii
360
1
4320
Denes the minimum time period between the start of two defrost cycles. If the
evaporator temperature goes below the defrost start temperature (dEt), the control-
ler triggers the defrost after this period. If not, the defrost will be triggered at Maxi-
mum defrost interval (dAi)
Maximum defrost Interval (Mins)
dAi
420
1
4320
Maximum time period between the start of two defrost cycles
Minimum defrost time (Mins)
dit
5
0
240
Denes the minimum duration of a defrost cycle. During this period, the controller
will not check the temperature. Once the minimum time has expired, the tempera-
ture will be checked and if the terminate temperature "dtt" has been reached, the
defrost cycle will end. If “dtt” has not been reached, defrost will continue until maxi-
mum defrost time "dAt" is reached.
Maximum defrost Time (Mins)
dAt
30
0
480
Maximum duration of a defrost cycle. The controller will terminate the defrost after
this time, even if the evaporator sensor is congured and the evaporator tempera-
ture is less than the defrost terminate temperature (dtt)
Defrost Terminate Temp (°C)
dtt
6
0
50
It denes the evaporator temperature at which defrost must be terminated. The
controller will terminate the defrost based on the defrost terminate temperature
(dtt) or Maximum defrost time (dAt). If no evaporator sensor is used, defrost will be
terminated based on the maximum defrost time (dAt)
Defrost on accumulated Compres-
sor Run Time
dCt
No
No
Yes
If it is set to "Yes", the defrost interval is calculated based on the total time the com-
pressor has been running. If it is set to “No”, then defrost interval is based on the
elapsed time, regardless of the compressor ON time
Defrost Start by Evaporator Temp
(°C)
dEt
-100
-100
0
Evaporator temperature at which the defrost will be triggered after a minimum de-
frost interval in order to avoid excess frost on the evaporator (active only if the evap-
orator sensor is congured)
Drip O time (Mins)
dot
2
0
60
Denes the time delay before starting the compressor after terminating defrost. This
feature is to ensure no water droplet on the evaporator before starting the cooling
cycle
Fan Delay After Defrost (Sec.)
Fdd
0
0
960
Denes the delay before switching on the fan from compressor start after defrost to
avoid warm air circulation
Fan Start Temperature after defrost
(°C)
Ftd
25
-25
25
It determines at what evaporator temperature the fan will start after a defrost cycle.
If the time set in "Fdd" occurs before the temperature set in "Ftd", the fan will start in
line with "Fdd". If the temperature set in "Ftd" occurs rst, then the fan will start in
line with "Ftd"
Fan ON during Defrost
dFa
No
No
Yes
Denes the status of the fan during defrost. Set to "Yes", the fan will run during de-
frost cycles and set to "No", the fan will be kept o during defrost cycles
Initial Defrost Interval (Mins)
idi
180
0
4320
The initial defrost interval determines the time for rst defrost after power-up. The
initial defrost is mainly intended for factory testing of the defrost functionality and
can be set to expire after a number of compressor cycles according to the setting of
parameter idd
Initial Defrost duration (Cycles)
idd
0
0
999
The initial defrost duration is the number of compressor cycles after which initial de-
frost is deactivated:
"0" : no initial defrost
"1-998" : number of compressor cycles before deactivation
"999" : initial defrost always active
© Danfoss | Climate Solutions | 2023.07 BC320944106159en-000301 | 23
Refrigeration controller, type EET series

Danfoss EET Series Specifications

General

Brand	Danfoss
Model	EET Series
Category	Controller
Language	English