22-46 Maximum Boost Time
Range: Function:
60 s* [0 - 600 s] Only to be used if par. 1-00
Configuration Mode
is set for Closed Loop and the integrated PI controller
is used for controlling the pressure.
Set the maximum time for which boost mode will be allowed. If the set time is exceeded, Sleep
Mode will be entered, not waiting for the set boost pressure to be reached.
22-50 End of Curve Function
Option: Function:
[0] * Off End of Curve monitoring not active.
[1] Warning The drive will continue to run, but activate a End of Curve warning [W94]. A drive digital output or
a serial communication bus can communicate a warning to other equipment.
[2] Alarm The drive will stop running and activate a End of Curve alarm [A 94]. A drive digital output or a
serial communication bus can communicate an alarm to other equipment.
[3] Man. Reset Alarm The drive will stop running and activate a End of Curve alarm [A 94]. A drive digital output or a
serial communication bus can communicate an alarm to other equipment.
NB!
Automatic restart will reset the alarm and start the system again.
NB!
Do not set par. 14-20
Reset Mode
, to [13] Infinite auto reset, when par. 22-50
End of Curve Function
is set to [2] Alarm. Doing so will
cause the drive to continuously cycle between running and stopping when a End of Curve condition is detected.
NB!
If the drive is equipped with a constant speed bypass with an automatic bypass function that starts the bypass if the drive experiences
a persistent alarm condition, be sure to disable the bypass’s automatic bypass function, if [2] Alarm or [3] Man. Reset Alarm is selected
as the End of Curve Function.
22-51 End of Curve Delay
Range: Function:
10 s* [0 - 600 s] When an End of Curve condition is detected, a timer is activated. When the time set in this parameter
expires, and the End of Curve condition has been steady in the entire period, the function set in
par. 22-50
End of Curve Function
will be activated. If the condition disappears before the timer
expires, the timer will be reset.
22-80 Flow Compensation
Option: Function:
[0] * Disabled [0]
Disabled
: Set-Point compensation not active.
[1] Enabled [1]
Enabled
:Set-Point compensation is active. Enabling this parameter allows the Flow Compensated
Setpoint operation.
22-81 Square-linear Curve Approximation
Range: Function:
100 %* [0 - 100 %] Example 1:
Adjustment of this parameter allows the shape of the control curve to be adjusted.
0 = Linear
100% = Ideal shape (theoretical).
6 How to Programme the Low Harmonic Drive
VLT AQUA Low Harmonic Drive Operating In-
structions
116 MG.20.T1.02 - VLT
®
is a registered Danfoss trademark
6
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