18
Function description
RC.1J.Z4.02
©
Danfoss
09/1999
AKC 25H1
System measurements/
data
Functions and measurements pertaining to the refrigerating system can be shown on the
control panel’s display or on the PC screen by system software type AKM.
Displayed temperatures are indicated in °C or K, and functions with ON or OFF.
AKA 21 operation
A display with ***** indicates that there is a defective sensor or that a sensor has not been
mounted.
Compressor regulation
P0
°
C
Actual suction pressure in
°
C
P0 Ref
°
C
Suction pressure reference
Comp. Cap.%
Actual cut in compressor capacity
Req. Cap. %
Compressor capacity reference
Pc
°
C
Actual discharge pressure in
°
C
Sd
°
C
Actual discharge temperature
SH K
Actual superheat
Night s.b.
Status of night-setback function (ON or OFF)
( ) Cap. %
Actual cut in capacity for this compressor (()=1-9)
( ) Run time
Compressor’s accumulated run time in hours (()=1-9)
( ) Cut / 24 h
Compressor’s number of starts the past 24 hours
Condenser regulation
Pc
°
C
Actual discharge pressure in
°
C
Pc Ref.
°
C
Discharge pressure reference in
°
C
Cond. Cap. %
Actual cut in condenser capacity
Req. Cap. %
Condenser capacity reference
Controller data
Code no.
Controller’s code number and software version
System address
Controller’s system address (set from a PC)
Address
Controller address (set on the controller’s switches)
Alarm report to
System address (end receiver) to whom alarms are to be sent
(set from a PC)
Gateway address Address of nearest gateway that is to transmit alarms
(set from a PC)
Constant updating
If constant display of a menu is required, e.g. a temperature value, the display on the control
panel can be locked to the menu.
Procedure: Show the required menu on the display, push the ENTER key for three seconds.
The function is cancelled by pushing one of the arrow keys.
PC operation
In addition to the earlier described measurements with control panel type AKA 21 it is with
operation from a PC, also possible to define the importance of the various alarms. Read the
section: “Alarms and messages”.
