Danfoss EKC 202D User Manual

EKC 202D Manual RS8EE202 © Danfoss 08-2010 7
Survey of functions
Function Para-
meter
Parameter by operation via data
communication
Normal display
Normally the temperature value from one of the two thermostat sensors S3 or S4 or a
mixture of the two measurements is displayed.
In o17 the ratio is determined.
Display air (u56)
Thermostat Thermostat control
Set point
Regulation is based on the set value plus a displacement, if applicable. The value is set
via a push on the centre button.
The set value can be locked or limited to a range with the settings in r02 and r 03.
The reference at any time can be seen in ”u28 Temp. ref”
Cutout °C
Differential
When the temperaure is higher than the reference + the set dierential, the compres-
sor relay will be cut in. It will cut out again when the temperature comes down to the
set reference.
r01 Dierential
Setpoint limitation
The controller’s setting range for the setpoint may be narrowed down, so that much
too high or much too low values are not set accidentally - with resulting damages.
To avoid a too high setting of the setpoint, the max. allowable reference value must
be lowered.
r02 Max cutout °C
To avoid a too low setting of the setpoint, the min. allowable reference value must be
increased.
r03 Min cutout °C
Correction of the display’s temperature showing
If the temperature at the products and the temperature received by the controller are
not identical, an oset adjustment of the shown display temperature can be carried
out.
r04 Disp. Adj. K
Temperature unit
Set here if the controller is to show temperature values in °C or in °F.
r05 Temp. unit
°C=0. / °F=1
(Only °C on AKM, whatever the set-
ting)
Correction of signal from S4
Compensation possibility through long sensor cable
r09 Adjust S4
Correction of signal from S3
Compensation possibility through long sensor cable
r10 Adjust S3
Start / stop of refrigeration
With this setting refrigeration can be started, stopped or a manual override of the
outputs can be allowed.
Start / stop of refrigeration can also be accomplished with the external switch func-
tion connected to a DI input.
Stopped refrigeration will give a ”Standby alarm”.
r12 Main Switch
1: Start
0: Stop
-1: Manual control of outputs allowed
Night setback value
The thermostat’s reference will be the setpoint plus this value when the controller
changes over to night operation. (Select a negative value if there is to be cold ac-
cumulation.)
r13 Night oset
Selection of thermostat sensor
Here you dene the sensor the thermostat is to use for its control function. S3, S4, or a
combination of them. With the setting 0%, only S3 is used (Sin). With 100%, only S4.
r15 Ther. S4 %
Activation of reference displacement
When the function is changed to ON the thermostat dierential will be increased by
the value in r40. Activation can also take place via input DI1 or DI2 (dened in o02 or
o37).
r39 Th. oset
Ref. Dif.

Danfoss EKC 202D Specifications

General

Brand	Danfoss
Model	EKC 202D
Category	Controller
Language	English