Lenze 8200 Frequency inverters - Manual (Page 108)

Commissioning
8200SHB0199 5-3
5.3 Adapt machine data
5.3.1 Determine speed range (f
dmin,
f
dmax)
Code Name Possible settings IMPORTANT
Lenze Choice Info
C010 Minimum field
frequency
820X 0.00 0.00 {0.05 Hz} 480.00
821X/822X/
824X
0.00 0.00 {0.02 Hz} 480.00
C011 Maximum field
frequency
820X 50.00 30.00 {0.05 Hz} 480.00
821X/822X/
824X
50.00 7.50 {0.02 Hz} 480.00
Function The speed range required for the application can be selected via the input of field frequencies f
dmin
and f
dmax
:
- f
dmin
corresponds to the speed at 0 % speed setpoint selection.
- f
dmax
corresponds to the speed at 100 % speed setpoint selection.
Adjustment Relation between field frequency and synchronous motor speed:
n
Nsyn
f
dmax
ô 60
p
n
Nsyn
Synchronous motor speed [min -1 ]
f
dmax
Max. field frequency [Hz]
p No. of pole pairs (1, 2, 3, ...)
Example: 4 pole asynchronous motor:
p = 2, f
dmax
= 50 Hz n
Nsyn
50 ô 60
2
1500 min Å1
Important - With the setting of f
dmin
> f
dmax
, the field frequency is limited to f
dmax
.
- With setpoint selection via JOG values, f
dmax
acts as limitation.
- f
dmax
is an internal normalisation variable:
- Use the LECOM interface only for important modifications, when the controller is inhibited.
- Observe the maximum speed of the motor!
- f
dmin
is only effective:
- With analog setpoint input.
- With the motor potentiometer function ”DOWN”.
Special features
fd
C011
(fdmax)
C010
(fdmin)
0 % 100 %
Show/Hide Bookmarks