Danfoss AK-CC 750 series - Controller Indicators and Functions; LEDs, Log, and Alarm Functions

6 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
■ Power
■ Comm
■ DO1 ■ Status
■ DO2 ■ Service Tool
■ DO3 ■ LON
■ DO4 ■ Alarm
■ DO5
■ DO6
■ DO7
■ DO8 ■ Service Pin
Light-emitting diodes
A number of light-emitting diodes makes it possible to follow the
signals that are received and transmitted by the controller.
Log
From the log function you can dene the measurements you wish
to be shown.
The collected values can be printed, or you may export them to a
le. You can open the le in Excel or import in AKM.
(The Log function is only available via AK-ST 500.)
If you are in a service situation you can show measurements in a
trend function. The measurements are then made real-time and
displayed instantly.
Alarm
The display gives you an overview of all active alarms. If you wish
to conrm that you have seen the alarm you can cross it o in the
acknowledge eld.
If you want to know more about a current alarm you can click on it
and obtain an information display on the screen.
A corresponding display exists for all earlier alarms. Here you can
upload information if you need further details about the alarm
history.
Adaptive defrost
AK-CC 750 is equipped with an adaptive defrost function. By using
an AKV valve as mass ow sensor for the supply of refrigerant the
control can monitor ice formation on the evaporator.
Function can cancel planned defrosts which are not necessary,
and on its own initiative start a defrost if the evaporator is about
to be blocked by rime and ice.
Slow ash = OK
Quick ash = answer from gateway/
installed in network
Constantly ON = error
Constantly OFF = error
Flash = active alarm/not cancelled
Constant ON = Active alarm/cancelled
(In 084Z0139 the alarm LED is moved to
position 5.)