EKC
319A
Manual RS8EB102 © Danfoss 09-2005
3
Survey of functions
Function
Para-
meter
Parameter by operation via
data communication
Normal display
The temperature sensor registers the discharge gas temperature.
The value is shown in the display.
-
Temperature
The valve’s actual opening degree can be displayed by giving the lower button a brief
push (1s). Cf. also o17.
-
OD %
Reference
Temperature control
Reference
The liquid injection starts when the set value is passed.
Push both buttons simultaneously to set the setpoint.
-
Temperature Ref
Start/stop of regulation
With this setting the regulation can be started and stopped.
Start/stop can also be performed with the external contact function.
Regulation is stopped if just one of them is OFF.
r12
Main Switch
Alarm
The controller can give alarm in different situations.
When there is an alarm the three lowest LED’s at the front of the controller will flash,
and the alarm relay is cut in. See also A19.
Alarm limit
A temperature limit can be set where the alarm is to be activated.
A16
Limit Alarm
Time delay for alarm
When the temperature value is exceeded a timer function will start. The alarm will not
become activated until the set time delay has been passed.
The time delay is set in seconds.
A17
Limit Alm. delay
Activation of the alarm relay
Set here whether the alarm relay is to be activated when the time delay has been
passed:
0: Alarm relay active
1: Alarm relay not active
A19
Alarm type
(With setting = 0 the alarm is also
transmitted via the data communica-
tion)
With data communication the impor-
tance of the individual alarms can be
defined. Setting is carried out in the
“Alarm destinations” menu.
Control parameters
Control Settings
P - band
If the value is reduced the regulating range will be reduced. (The P-band will be over
the reference).
n04
Kp factor
I: Integration time Tn
The I-link can be made passive by setting the value at max. (600s)
(If the Tn value is increased the regulation becomes slower).
n05
Tn sec.
Periode time
The valve is operated with pulses of a given length. The length depends on the open-
ing degree required. If a large opening degree is required, the pulse will last for an
entire period time. A period time will thus comprise both open and closed valve.
n13
Period time
Miscellaneous
Miscellaneous
Address
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 madewhen a data communication modulehas been
mounted in the controller and the installation of the data communication cable has
been completed.
This installation is mentioned in a separate document “RC8AC”..
Following installation of a data com-
munication module, the controller can
be operated on a par with the other
controllers in ADAP-KOOL® refrigera-
tion controls.
The address is set between 1 and 60 (119)
o03
-
The address is sent to the gateway when the menu is set in pos. ON
(The setting will automatically change back to Off after a few seconds.)
o04
-
Frequency
Set the net frequency.
o12
50 / 60 Hz
(50=0, 60=1)
