Danfoss AK-PC 351 User Manual

16 User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351
Alarm priorities
General
Standby mode:
Sensor error:
Refrigerant:
Output in MANUAL:
General alarm;
Alarm priorities
The controller will issue an alarm notication if a specic 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
Critical
Servere
Normal
Disable
Suction group
Low pressure:
High pressure:
Compressor safety:
Condenser
High pressure:
Fan safety:
Setup Wizard
Setup Wizard 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 conguration menu. If applicable, see page 17.
Alarm list
Alarm text Reason Priority
setting
Default
value
General alarms
Standby mode (Main sw. OFF) Alarm when control is stopped by internal or external Main Switch (DI input "Main Switch") Standby mode Normal
Po sensor error Pressure transmitter signal from Po defective
Sensor error Normal
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 Refrigerant not set Normal
Output in manual mode An output is set in manual mode Output in MAN mode Normal
IO conguration error Not all inputs and outout functions have been assigned to hardware Inputs or outputs* (can not be set) Normal
GA - "Alarm text" Alarm on general alarm input DI 8 (DI input "Gen. Alarm" - alarm text depend upon congured text) General alarm Normal
Suction alarms
Po/S4 Low suction pressure Minimum safety limit for suction pressure Po has been violated
Low pressure Po Normal
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 High pressure Po Critical
Comp. 1 High disch. temp Safety limit for discharge temperature of digital scroll/Stream compressor has been exceeded
Compressor safety Normal
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
pressure
High prevention safety limit for condensing pressure Pc has been violated (3K below safety limit)
High pressure Pc Critical
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") Fan safety Normal
* The alarm "IO conguration 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 conguration of the controller.
Go to the menu point "Main menu => IO status => IO summary".
In this screen you can see if you have congured 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 congured.
Solve the problem by adapting the DO functions to the max. No of DO outputs.
Sensor alarms
Sensor alarms shut o 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.

Danfoss AK-PC 351 Specifications

General

Brand	Danfoss
Model	AK-PC 351
Category	Controller
Language	English