Max. Frequency - Siemens MICROMASTER 440 Parameter Manual

Parameter Description
P1082[3]

Max. frequency

CStat: CT
P-Group: SETPOINT
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.
Index:
P1082[0] : 1st. Drive data set (DDS)
P1082[1] : 2nd. Drive data set (DDS)
P1082[2] : 3rd. Drive data set (DDS)
Example:
f_act
P1082
P1082 - P2162
|f_act| ≥ P1082 (f_max)
r0052
Bit 10
Dependency:
The maximal value of motor frequency P1082 is limited to pulse frequency P1800. P1082 is dependent on
the derating characteristic as followed:
f P1082
max
If closed-loop vector control (P1300 > 19) is selected, then the maximum frequency is internally limited by
the following equation:
= min(P1082,
f
max
The resultant value is displayed in r1084 (resultant maximum frequency).
The maximum output frequency of inverter can be exceeded if one of the following is active:
- p1335 ≠ 0
(Slip compensation active ) :
f (p1335)
max
- p1200 ≠ 0
f (p1200)
max
Note:
When using the setpoint source
- Analog Input
- USS
- CB (e.g. PROFIBUS)
The setpoint frequency (in Hz) is cyclically calculated using a percentage value (e.g. for the analog input
r0754) or a hexadecimal value (e.g. for the USS r2018[1]) and the reference frequency P2000.
If for example P1082 = 80 Hz, P2000 = 50 Hz and the analog input is parameterised with P0757 = 0 V,
P0758 = 0 %, P0759 = 10 V, P0760 = 100 %, a setpoint frequency of 50 Hz will be applied at 10 V of the
analog input.
128
Datatype: Float
Active: first confirm
1
0
2 kHz 4 kHz
0 - 133.3 Hz 0 - 266.6 Hz
⋅
5 P0310, 200.00)
= + = +
f f p1082
max slip , max
(Flying restart active) :
= + ⋅ =
f 2 f p1082
max slip , nom
Unit: Hz
QuickComm.: Yes
P1800
6 kHz 8 - 16 kHz
0 - 400 Hz 0 - 650 Hz
p1336 r0330
⋅ ⋅
p0310
100 100
r0330
+ ⋅ ⋅
2
p0310
100
MICROMASTER 440
Issue 01/06
Level
Min: 0.00
1
Def: 50.00
Max: 650.00
t
t
Parameter List
6SE6400-5BB00-0BP0