Danfoss VLT AQUA Drive FC 200 Instruction Manual page 132

VLT AQUA Low Harmonic Drive Instruction
Manual
22-45 Setpoint Boost
Range:
0 %* [-100 - 100 %]
22-46 Maximum Boost Time
Range:
60 s* [0 - 600 s]
22-50 End of Curve Function
Option:
[0] * OFF
[1] Warning
[2] Alarm
[3] Man. Reset Alarm
NOTE!
Automatic restart will reset the alarm and start the system again.
NOTE!
Do not set par. 14-20
cause the drive to continuously cycle between running and stopping when a End of Curve condition is detected.
NOTE!
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.
Function:
Only to be used if par. 1-00
troller is used. For example, in systems with constant pressure control, it is advantageous to increase
the system pressure before the motor is stopped. This will extend the time during which the motor
is stopped and help to avoid frequent start/stop.
Set the desired overpressure/temperature as a percentage of the setpoint for the pressure (Pset)/
temperature before entering sleep mode.
If set at 5%, the boost pressure will be Pset*1.05. The negative values can be used, for example,
for cooling tower control, where a negative change is needed.
Function:
Only to be used if par. 1-00
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 and will not wait for the set boost pressure to be reached.
Function:
End of Curve monitoring not active.
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.
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.
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.
Reset Mode , to [13] Infinite auto reset when par. 22-50
®
MG.20.T1.22 - VLT is a registered Danfoss trademark
6 How to Program the Low Harmonic Drive
Configuration Mode , is set for closed-loop and the integrated PI con-
Configuration Mode
is set for closed-loop and the integrated PI controller
End of Curve Function is set to [2] Alarm. Doing so will
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