Night Blind; Humidity Control - Danfoss AK-CC55 User Manual

AK-CC55 Single Coil and Single Coil UI
Here there are two operational options if data communication should fail:
• The light can go ON
• The light can stay in its current mode
The light load must be connected to the NC terminals on the relay.
This ensures that the light remains ON in the appliance if power to the controller should fail.
A setting defines how light is controlled when regulation is stopped via r12 Main switch = OFF (see o98). The light is
switched off when the appliance cleaning function is activated.

Night blind

Motorised night blinds can be controlled automatically from the controller either through the custom set-up night
blind output or via the NO connector on the light relay. The night blinds will follow the status of the light function.
When the light is switched on, the night blinds open, and when the light is switched off, the night blinds close
again. When the night blinds are closed, it is possible to open them using a switch signal on the digital input. If this
pulse signal is activated, the night blinds will open and the refrigeration appliance can be filled with new products.
If the pulse signal is activated again, the blinds close.
When the night blind function is used, the thermostat function can control with different weighting between the S3
and S4 sensors. A weighting during day operation and another when the blind is closed.
A night blind is opened when the appliance cleaning function is activated.
A setting can define that the night blind is opened when "r12" (Main switch) is set to off (see o98).
When the night blind rolls down, the fan will be stopped for the set time. The night blind can thereby roll down to
the correct position.

Humidity control

In application 8 when setup for room control it is possible to define if humidity control should be done via a
humidifier or a dehumidifier.
When humidity control is enabled, the second display will read out the actual humidity.
The controller measures the humidity via a 0 – 10 V signal from a humidity sensor and by means of a DO relay it can
activate a humidifier or a de-humidifier.
High and low humidity alarm limits can be set to generate a humidity alarm.
Humidity control is disabled when main switch is OFF, at manual control, at case shutdown, at forced closing mode,
at door open, if cooling is stopped, at humidity sensor error and at case cleaning.
It is possible to define whether humidity control is enabled during defrost or not.
Figure 16: Humidity control
Temperature
Humidity max temp.
Diff.
Diff.
Humidity min temp.
Humidity
control
enabled
A Max and Min temperature range can be defined wherein the humidity control is enabled. Upper and lower
differential is fixed at 1K.
© Danfoss | Climate Solutions | 2021.02
Time
BC364229688105en-000101 | 18