Siemens Sinamics G120 Series Parameter Manual page 129

p1082[0...2] Max. frequency / Max. frequency
CU240E Access level: 1
CU240S
Quick comm. YES
Can be changed: C, T
Min
0.00 [Hz]
Description: Sets maximum motor frequency [Hz] at which motor will run irrespective of the frequency setpoint.
The value set here is valid for both clockwise and anticlockwise rotation. Futhermore, the monitoring function |f_act|
>= P1082 (r0052 Bit10, see example below) is affected by this parameter.
Example:
p1082 - p2162
|f_act| ≥ p1082 (f_max)
Dependency: The maximum value of P1082 also depends on the nominal frequency: Max. P1082 = min(15*P0310, 650 Hz).
As consequence P1082 can be affected if P0310 is changed to a smaller value.
The maximum frequency and the pulse frequency depending on each other. The maximum frequency affects the
pulse frequency according to the following table.
f
max
Example:
If P1082 is set to 350 Hz a pulse frequency from at least 6 kHz is necessary. If P1800 is smaller than 6 kHz the
parameter is changed P1800 = 6 kHz.
The maximum output frequency of inverter can be exceeded if one of the following is active:
- p1335 ≠ 0
f
- p1200 ≠ 0
f
The resultant value is displayed in r1084 (resultant maximum frequency).
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
⏐f_act⏐
p1082
1
r0052
Bit 10
0
2 kHz
0 - 133.3 Hz 0 - 266.6 Hz
p1082
(Slip compensation active) :
= +
(p1335) f f
max max slip , max
(Flying restart active) :
= + ⋅
(p1200) f 2 f
max max slip , nom
P-Group: Setpoints
Active: NO
Max
650.00 [Hz]
p1800
4 kHz 6 kHz
0 - 400 Hz
p1336 r0330
= + ⋅ ⋅
p1082 p0310
100 100
r0330
= + ⋅ ⋅
p1082 2 p0310
100
Parameters
List of Parameters
Data type: Floating Point
Data set: DDS
Factory setting
50.00 [Hz]
8 - 16 kHz
0 - 650 Hz
t
t
1-129