Alarm Priorities; Alarm List - Danfoss AK-PC 351 User Manual

Alarm priorities

General
Standby mode:
Sensor error:
Refrigerant:
Output in MANUAL:
General alarm;
Suction group
Low pressure:
High pressure:
Compressor safety:
Condenser
High pressure:
Fan safety:
Setup Wizard
Setup Wizard

Alarm list

Alarm text
General alarms
Standby mode (Main sw. OFF) Alarm when control is stopped by internal or external Main Switch (DI input "Main Switch")
Po sensor error Pressure transmitter signal from Po defective
S4 sensor error Temperature signal from S4 media temp. sensor defective
Sd sensor error Temperature signal from Sd discharge gas temp. Sd defective
Pc sensor error Pressure transmitter signal from Pc defective
S7 sensor error Temperature signal from S7 media sensor on condenser defective
Sc3 sensor error Temperature signal from Sc3 air on condenser defective
Sd Comp. 1 sensor error Temperature signal from "Sd comp. 1" discharge gas temp. on digital scroll/Stream compressor is
defective
Refrigerant not selected Alarm if no refrigerant has been selected
Output in manual mode An output is set in manual mode
IO configuration error Not all inputs and outout functions have been assigned to hardware Inputs or outputs*
GA - "Alarm text" Alarm on general alarm input DI 8 (DI input "Gen. Alarm" - alarm text depend upon configured text)
Suction alarms
Po/S4 Low suction pressure Minimum safety limit for suction pressure Po has been violated
LP safety switch cut out Low safety limit for external low pressure switch has been violated (DI 7 input)
Po/S4 High suction pressure High alarm limit for Po has been exceeded
Comp. 1 High disch. temp Safety limit for discharge temperature of digital scroll/Stream compressor has been exceeded
Compressor 1-4 safety cut out Compressor no. 1-4 has been cut out on general safety input (DI input "Comp.1-4 safety")
Condenser alarms
Pc/S7 High condensing High prevention safety limit for condensing pressure Pc has been violated (3K below safety limit)
pressure
HP safety switch cutout High safety limit for external high pressure switch has been violated (DI 8 input)
Common fan safety cut out A Fan is reported defective via common safety input (DI input "Fan safety")
* The alarm "IO configuration error" is activated if not all IO functions have been assigned to a hardware Input or output.
The reason is that too many functions have been selected via the configuration of the controller.
Go to the menu point "Main menu => IO status => IO summary".
In this screen you can see if you have configured too many functions of a certain type - indicated by an exclamation mark " ! "
Please refer to the screen example, were too many DO functions have been configured.
Solve the problem by adapting the DO functions to the max. No of DO outputs.
Sensor alarms
Sensor alarms shut off automatically when the sensor has been O.K. for 10 minutes.
If you have corrected the sensor error and want to perform a manual, forced removal of the alarm, go to the "Alarm detail display"
Press and hold the "X" key for 2 seconds here.
16
Alarm priorities
The controller will issue an alarm notification if a specific incident occurs.
Each incident is set to indicate the importance of each alarm, but it is possible to modify the
importance of each. Choose from between the following priority levels:
Critical: Important alarms that require a high level of attention.
Severe: Alarms of intermediate importance
Normal: No important alarms
Disable: Alarms set to this priority level will be cancelled.
Factory setting for the alarm can be seen on bottom of this page
This wizard will lead you through the necessary settings, i.e. a total of approximately
20 to 25 display screens, depending on what is selected along the way.
The selection will also result in a connection to a given input and output. You yourself
will see this connection in the IO configuration menu. If applicable, see page 17.
User Guide RS8GZ302 © Danfoss 2015-06
Reason
Critical
Servere
Normal
Disable
Priority Default
setting value
Standby mode Normal
Sensor error Normal
Refrigerant not set Normal
Output in MAN mode Normal
(can not be set) Normal
General alarm Normal
Low pressure Po Normal
High pressure Po Critical
Compressor safety Normal
High pressure Pc Critical
Fan safety Normal
AK-PC 351