Polarity - Danfoss EKC 223 User Manual

Case controller, type EKC 223 and EKC 224
Code Text on network
o37 (1) o37 DI2 Config.
o38 o38 Light config
o39 o39 Light remote
o61 (1) o61 Appl. Mode
o62 o62 Quick Setup
(1)
o67 o67 Make factory
o91 o91 Displ At Def
(1) (1) This menu can only be set when regulation is stopped, i.e. "r12" is set to 0. This menu can only be set when regulation is stopped, i.e. "r12" is set to 0.

Polarity

Table 19: Polarity
Code Text on network
P-- Polarity
P75 P75 Invert Alarm
P76 P76 Keypad lock
© Danfoss | Climate Solutions | 2023.05
Description
DI2 configuration
Here you can configure the DI2 to one of the functions listed below.
• (0) oFF = not used
• (1) Sdc = status display output
• (2) doo = door function
When the door is opened the compressor and fan are stopped after "C04 Compressor door open delay". If the door
alarm delay expires an alarm is generated and cooling is resumed.
• (3) doA = door alarm
When the door is opened the compressor and fan are stopped after "C04 Compressor door open delay". If the door
alarm delay expires an alarm is generated (cooling is not resumed).
• (4) SCH = main switch
Regulation is carried out when the input is short-circuited, and regulation is stopped when the input is put in position
OFF.
• (5) nig = day/night mode
When the input is short-circuited, there will be regulation for night operation.
• (6) rFd = reference displacement
Value in "r40" is added to the reference "r00" when the input is short-circuited.
• (7) EAL = external alarm
Alarm will be given when the input is short-circuited.
• (8) dEF = defrost
Defrost is initiated when the input is short-circuited. Edge triggering is used. Defrost exit can take place by time, tem-
perature or by manually pressing defrost push button on the front panel.
• (9) Pud = pull down
Pull down is initiated when the input is short-circuited. Edge triggering is used. It will come out of pull down based on
time and temperature defined under parameter "r96" and "r97" or can be stopped manually by pressing pull down
push button on front panel.
Light control
This parameter defines the way the light must be controlled. Below are the three light control modes available.
• (0) on = always on
• (1) dAn = day/night
• (2) doo = based on door action
• (3) nEt = Network signal from system manager
Light remote
Parameter used by the network system manager to control the light status. Only used on Modbus datacommunication and
if the parameter o38 has been set at (3) nEt.
Selection of application
The controller can be defined in various ways. Here you set which of the 4 applications is required.
Transfer a set of presettings to the controller
It is possible to select a quick setting of a number of parameters. It depends on whether a cabinet or a room is to be con-
trolled and whether defrost is to be stopped based on time or based on temperature.
After the setting, the value will return to 0. Any subsequent adjustment/setting of parameters can be made, as required.
Save settings as factory
This parameter when set to YES. The current controller Parameter settings are stored as Factory default.
 WARNING:
Original factory settings are overwritten.
Display at defrost
You can set what is to be displayed during defrost here.
• (0) Air = actual air temperature
• (1) FrE = freezed temperature (display the temperature just before starting defrost)
• (2) -d- = Defrost code "-d-" is displayed.
Description
Invert alarm relay
Alarm relay operation can be inverted here.
• 0=normal
• 1=invert relay action
Keyboard lock enable
YES=enable keyboard lock functionality after 5 minutes of no activity on the keypad.
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