VLT
®
HVAC DRIVE High Power
Instruction Manual
1-23 Motor Frequency
Range:
Size re-
lated
This parameter cannot be adjusted while the motor is running.
1-24 Motor Current
Range:
Size re-
lated
This parameter cannot be adjusted while the motor is running.
1-25 Motor Nominal Speed
Range:
Size re-
lated
This parameter cannot be adjusted while the motor is running.
3-41 Ramp 1 Ramp-up Time
Range:
*
3 s
This parameter cannot be adjusted while the motor is running.
Function:
[20 - 1000 Hz]
Select the motor frequency value from the motor nameplate
*
data. For 87 Hz operation with 230/400 V motors, set the name-
plate data for 230 V/50 Hz. Adapt par. 4-13
Limit [RPM)
application.
Function:
[0.1 - 10,000 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.
Function:
[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.
Function:
[1 - 3600 s]
Enter the ramp-up time, i.e., the acceleration time from 0 rpm
to the rated motor speed n
time such that the output current does not exceed the current
limit in par. 4-18 during ramping. Enter the ramp-up time, i.e.,
the acceleration time from 0 rpm to the rated motor speed
n
par
MG.11.F1.22 - VLT
®
is a registered Danfoss trademark.
Maximum Reference
and par. 3-03
M,N
(par. 1-25)
M,N
t
×
n
acc
norm
.3 − 41 =
ref rpm
Δ
4. How to Program
Motor Speed High
to the 87 Hz
(par. 1-25). Choose a ramp-up
par
.1 − 25
s
4
79
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