1-24 Motor Current
Range: Function:
Size re-
lated
*
[0.1 - 10000 A] Enter the nominal motor current value from the motor name-
plate data. This data is used for calculating motor torque, motor
thermal protection etc.
This parameter cannot be adjusted while the motor is running.
1-25 Motor Nominal Speed
Range: Function:
Size re-
lated
*
[100 - 60,000 RPM] Enter the nominal motor speed value from the motor nameplate
data. This data is used for calculating automatic motor com-
pensations.
This parameter cannot be adjusted while the motor is running.
3-41 Ramp 1 Ramp up Time
Range: Function:
3 s
*
[1 - 3600 s] Enter the ramp-up time, i.e. the acceleration time from 0 RPM
to the rated motor speed n
M,N
(par. 1-25). Choose 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.
par
.3 − 41 =
t
acc
×
n
norm
par
.1 − 25
Δ
ref rpm
s
3-42 Ramp 1 Ramp Down Time
Range: Function:
3 s
*
[1 - 3600 s] Enter the ramp-down time, i.e. the deceleration time from the
rated motor speed n
M,N
(par. 1-25) to 0 RPM. Choose a ramp-
down time such that no over-voltage arises in the inverter due
1. How to Programme VLT
®
AQUA Drive Programming Guide
14
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
1
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