Danfoss AK2-SC 255 User Manual

50 AK2-SC 255 Reference Manual RS.8D.M1.22
Alarm Levels Critical When conditions have been at or have gone beyond the
alarm’s trip level for the set time, the alarm will occur.
The alarm will dial out repeatedly at the interval set in
the routing screen (from 10 to 99 minutes with a
default value of 10 minutes).
Normal When conditions have been at or have or have gone
beyond the alarm’s trip level for the set time, the alarm
will occur. The alarm will dial out once.
Log Only When conditions have been at or have gone beyond the
alarm’s trip level for the set time, the alarm will occur.
There will be no dialout, but the occurrence will be
logged in the system as an active alarm.
Disabled The alarm is deactivated and will not occur or dial out;
its configuration, if any, will remain in memory, so that
if it is set to Critical, Normal, or Log Only, the same
trip level and time will appear in the screen.
Delete The alarm’s configuration will be deleted from
memory.
You can change the alarm action setting by selecting the field and scrolling to the
action you want (move the cursor to the field, then press the +/- key, then use the
arrow keys to scroll through the settings, then press ENTER).
What You Can
Change in a
Standard Alarm Standard alarms are the alarms that are automatically created during configuration of
refrigeration, HVAC, and other parts of the control and monitoring network. (You can
also custom configure up to three miscellaneous alarms on any point in the network.
Miscellaneous alarms are covered later in this section.)
If a standard alarm is based on an on/off input, you can change the alarm action
setting and the time setting. The time setting can range from 1-255 seconds, minutes,
or hours.
For an alarm based on a sensor input, in addition to the action setting and time setting,
you can change the sensor level. For the second alarm in the screen shown, the
sensor level could be anywhere in the range from -999.9 to 999.9 psi.
System alarms Configuration of system alarms, which concern operation of the controller and
network, will be covered in a later section of this manual.
Board & Points
configuration To configure board & points information for refrigeration, return to the Configure
Rack menu, put the cursor on Board & Points, and press ENTER. The screen is as
shown below. For AK2 module board & point configuration, refer also to the AK2
I/O user manual.

Danfoss AK2-SC 255 Specifications

General

Brand	Danfoss
Model	AK2-SC 255
Category	Controller
Language	English