NB!
If the Cascade Controller is active unwanted staging or destaging may result if the Discharge Temperature Monitor reduces the speed
to
Motor Speed Low Limit
par. 4-11 or 4-12.
28-20 Temperature Source
Option: Function:
Selects the input terminal to which the discharge temperature measurement device is connected.
[0] * None No Source. The Discharge Temperature Monitor is not active.
[1] Analog input 53 The measurement device is connected to input terminal 53. Program par. 6-10 - 6-15 to match the
characteristics of the device.
[2] Analog input 54 The measurement device is connected to input terminal 54. Program par. 6-20 - 6-25 to match the
characteristics of the device.
28-21 Temperature Unit
Option: Function:
Selects the unit of the discharge temperature.
[60 ] * ˚C
[160] ˚F
28-24 Warning Level
Range: Function:
130 * [10 – par.28-26] Selects the temperature at which a warning shall be issued. The action selected in par. 28-25 Warn-
ing Action becomes active at this temperature. Enter the temperature measured in the unit selected
in par. 28-21 Temperature Unit.
28-25 Warning Action
Option: Function:
Selects the action to be taken by the drive for discharge temperatures above the value programmed
in par. 28-24 Warning Level but below the value programmed in par. 25-26 Emergency Level.
[0] None No action. Only a warning will be issued.
[1] * Decrease cooling A warning is issued and the motor speed is lowered in steps of 10 Hz every 3 minutes until the
temperature either drops below the level programmed in par. 28-24 Warning Level or exceeds the
level programmed in par. 25-26 Emergency Level.
28-26 Emergency Level
Range: Function:
145* [par. 28-24 - 300] Selects the temperature at which an alarm shall be issued. Enter the temperature in the unit pro-
grammed in par. 28-21 Temperature Unit.
28-27 Discharge Temperature
Range: Function:
0* [-2147483648 – 2147483648] Returns the actual value of the discharge temperature.
3.21.2 28-7* Day/ Night Control
In day-night control mode compressor runs normally during day time while it runs with increased setpoint during night time. The condenser fans run
normally during day time while they run with reduced maximum speed limit during night time. There are three sources of day or night indication in the
drive. Digital Input (5-1*), Timed Actions (23-*) and LON Bus (28-7*).
The Day-Night control action is active if the parameter
Setpoint Type
(20-25) is set to ‘Fixed with Night Setback’.
ADAP-KOOL
®
Drive Programming Guide 3 Parameter Description
MG.11.N1.02 - VLT
®
is a registered Danfoss trademark
219
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