Danfoss EKC 202D Manual page 11

Real-time clock
The controller can accommodate one insertion module which may either be a data
communication module or a battery module for the real-time clock.
The battery module is used in conjunction with the real-time clock and will keep the
clock going during lengthy power failures.
Real-time clock
You can set up to six individual times for defrost starts for each 24-hour period. There
is also a date indication used for registration of temperature measurements.
Defrost start, hour setting
Defrost start, minute setting (1 and 11 belong together, etc.)
When all t01 to t16 equal 0 the clock will not start defrosts.
Clock: Hour setting
Clock: Minute setting
Clock: Date setting
Clock: Month setting
Clock: Year setting
Miscellaneous
Delay of output signal after start-up
After start-up or a power failure the controller's functions can be delayed so that over-
loading of the electricity supply network is avoided.
Here you can set the time delay.
Digital input signal - DI1
The controller has a digital input 1 which can be used for one of the following func-
tions:
Off: The input is not used
1) Status display of a contact function
2) Door function. When the input is open it signals that the door is open. The refrig-
eration and the fans are stopped. When the time setting in "A4" is passed, an alarm
will be given and refrigeration will be resumed.
3) Door alarm. When the input is open it signals that the door is open. When the time
setting in "A4" is passed, there will be alarm.
4) Defrost. The function is started with a pulse pressure. The controller will register
when the DI input is activated. The controller will then start a defrost cycle. If the
signal is to be received by several controllers it is important that ALL connections
are mounted the same way (DI to DI and GND to GND).
5) Main switch. Regulation is carried out when the input is short-circuited, and regula-
tion is stopped when the input is put in pos. OFF.
6) Night operation. When the input is short-circuited, there will be regulation for
night operation.
7) Reference displacement when DI1 is short-circuited. Displacement with "r40".
8) Separate alarm function. Alarm will be given when the input is short-circuited.
9) Separate alarm function. Alarm will be given when the input is opened. (For 8 and
9 the time delay is set in A27)
10) Case cleaning. The function is started with a pulse pressure. Cf. also description on
page 4.
11) Forced refrigeration when the input is short-circuited.
If the controller is built into a network with data communication, it must have an
address, and the master gateway of the data communication must then know this
address.
These settings can only be made when a data communication module has been
mounted in the controller and the installation of the data communication cable has
been finished.
This installation is mentioned in a separate document "RC8AC".
The address is set between 1 and 240 , gateway determined
The address is sent to the gateway when the menu is set in pos. ON
IMPORTANT: Before you set o04, you MUST set o61. Otherwise you will be transmit-
ting incorrect data.
Access code 1 (Access to all settings)
If the settings in the controller are to be protected with an access code you can set a
numerical value between 0 and 100. If not, you can cancel the function with setting 0.
(99 will always give you access).
Sensor type
Normally a Pt 1000 sensor with great signal accuracy is used. But you can also use a
sensor with another signal accuracy. That may either be a PTC sensor (1000 ohm at
25°C) or an NTC sensor (5000 Ohm at 25°C).
All the mounted sensors must be of the same type.
Display step
Yes: Gives steps of 0.5°
No: Gives steps of 0.1°
EKC 202D Manual RS8EE202 © Danfoss 08-2010
(Times cannot be set via data com-
munication. Settings are only relevant
when there is no data communica-
tion).
t01-t06
t11-t16
t07
t08
t45
t46
t47
Miscellaneous
o01 DelayOfOutp.
o02 DI 1 Config.
Definition takes place with the nu-
merical value shown to the left.
(0 = off )
DI state
(Measurement)
The DI input's present status is shown
here. ON or OFF.
After installation of a data communi-
cation module the controller can be
operated on an equal footing with the
other controllers in ADAP-KOOL®
refrigeration controls.
o03
o04
o05 -
o06 SensorConfig
Pt = 0
PTC = 1
NTC = 2
o15 Disp. Step = 0.5
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