Danfoss AK-CC 750 series Manual page 6

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 define the measurements you wish
to be shown.
The collected values can be printed, or you may export them to a
file. You can open the file 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 confirm that you have seen the alarm you can cross it off in the
acknowledge field.
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 flow 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.
6 RS8GM222 © Danfoss 10-2014
Slow flash = OK
■ Power
Quick flash = answer from gateway/
■ Comm
■ DO1 ■ Status
Constantly ON = error
■ DO2 ■ Service Tool
Constantly OFF = error
■ DO3 ■ LON
■ DO4 ■ Alarm
■ DO5
Flash = active alarm/not cancelled
■ DO6
Constant ON = Active alarm/cancelled
■ DO7
■ DO8 ■ Service Pin
(In 084Z0139 the alarm LED is moved to
position 5.)
AK-CC 750 - 080Z0130 & 080Z0139
installed in network