Danfoss FC 100 Instruction Manual page 80

4. How to Program
4
3-42 Ramp 1 Ramp-down Time
Range:
*
3 s
4-11 Motor Speed Low Limit [RPM]
Range:
Size re-
lated
4-12 Motor Speed Low Limit [Hz]
Range:
Size re-
lated
80
Function:
[1 - 3,600 s] Enter the ramp-down time, i.e., the deceleration time from the
rated motor speed n
down time so that no overvoltage arises in the inverter due to
regenerative operation of the motor, and so that the generated
current does not exceed the current limit set in par. 4-18. See
ramp-up time in par. 3-41.
par
Function:
[0 - 60,000 rpm] Enter the minimum limit for motor speed. The Motor Speed Low
* Limit can be set to correspond to the manufacturer's recom-
mended minimum motor speed. The Motor Speed Low Limit
must not exceed the setting in par. 4-13
[RPM]
Function:
[0 - 1000 Hz] 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
MG.11.F1.22 - VLT
(par. 1-25) to 0 rpm. Choose a ramp-
M,N
t n par
×
dec norm
.3 − 42 =
Δ ref rpm
.
Motor Speed High Limit [Hz]
® is a registered Danfoss trademark.
VLT ® HVAC DRIVE High Power
Instruction Manual
.1 − 25
s
Motor Speed High Limit
.