Ramp 1 Ramp Up Time; Ramp 1 Ramp Down Time; Motor Speed Low Limit; Motor Speed High Limit - Danfoss vlt FC 102 Operating Instructions Manual

®
VLT HVAC Drive Operating Instructions

3-41 Ramp 1 Ramp up Time

Range:
*
3 s [1 - 3600 s]

3-42 Ramp 1 Ramp Down Time

Range:
*
3 s [1 - 3600 s]
4-11 Motor Speed Low Limit [RPM]
Range:
*
Size related [0 - 60,000 RPM]
4-12 Motor Speed Low Limit [Hz]
Range:
*
Size related [0 - 1000 Hz]
4-13 Motor Speed High Limit [RPM]
Range:
*
Size related [0 - 60,000 RPM]
NB!
The output frequency value of the frequency converter must not exceed a value higher than 1/10 of the switching frequency.
NB!
Any changes in par. 4-13 will reset the value in
4-14 Motor Speed High Limit [Hz]
Range:
*
Size related [0 - 1000 Hz]
Function:
Enter the ramp-up time, i.e. the acceleration time from 0 RPM to the rated motor speed n
a ramp-up time such that the output current does not exceed the current limit in par. 4-18 during ramping. See
ramp-down time in par. 3-42.
tacc × nnorm par
par
.3 − 41 =
ref rpm
Δ
See drawing above!
Function:
Enter the ramp-down time, i.e. the deceleration time from the rated motor speed n
Choose a ramp-down time such that no over-voltage arises in the inverter due to regenerative operation of the
motor, and such that the generated current does not exceed the current limit set in par. 4-18. See ramp-up time
in par. 3-41.
tdec nnorm par
×
par .3 − 42 =
ref rpm
Δ
Function:
Enter the minimum limit for motor speed. The Motor Speed Low Limit can be set to correspond to the
manufacturer's recommended minimum motor speed. The Motor Speed Low Limit must not exceed the setting
Motor Speed High Limit [RPM]
in par. 4-13
Function:
Enter the minimum limit for motor speed. The Motor Speed Low Limit can be set to correspond to the minimum
output frequency of the motor shaft. The Motor Speed Low Limit must not exceed the setting in par. 4-14
Speed High Limit [Hz] .
Function:
Enter the maximum limit for motor speed. The Motor Speed High Limit can be set to correspond to the
manufacturer's maximum rated motor speed. The Motor Speed High Limit must exceed the setting in par. 4-11
Motor Speed Low Limit [RPM]
. Only par. 4-11 or 4-12 will be displayed depending on other parameters set in
the Main Menu and depending on default settings dependant on global geographical location.
par. 4-53, Warning High Speed
Function:
Enter the maximum limit for motor speed. The Motor Speed High Limit can be set to correspond to the
manufacturer's recommended maximum frequency of the motor shaft. The Motor Speed High Limit must exceed
MG.11.A6.02 - VLT ® is a registered Danfoss trademark
6. How to programme the frequency converter
.1 − 25
s
.1 − 25
s
.
to the same value as set in par. 4-13.
(par. 1-25). Choose
M,N
(par. 1-25) to 0 RPM.
M,N
Motor
69
6