Linear And Parabolic Characteristics; Characteristics For Special Applications - Siemens SINAMICS G120XA Operating Instructions Manual

Advanced commissioning
6.6 Motor control
Table 6-60

Linear and parabolic characteristics

Requirement Application examples
The required tor‐ Eccentric-worm pump,
que is independ‐ compressor
ent of the speed
The required tor‐ Centrifugal pumps, radi‐
que increases with al fans, axial fans, com‐
the speed pressors
Table 6-61

Characteristics for special applications

Requirement Application examples
Applications with a Centrifugal pumps, radi‐
low dynamic re‐ al fans, axial fans
sponse and con‐
stant speed
276
General converter technical data (Page 864)
Remark
-
The converter compensates for the voltage
drops across the stator resistance. Recom‐
mended for motors of less than 7.5 kW.
Precondition: The motor data has been set
according to the rating plate and the motor
has been identified after the basic commis‐
sioning.
Lower losses in the motor and converter
than with the linear characteristic.
Remark
The ECO mode saves more energy than
the parabolic characteristic.
If the speed setpoint is reached and re‐
mains unchanged for 5 seconds, the con‐
verter reduces its output voltage again.
Characteristic
Linear
Linear with Flux
Current Control
(FCC)
Parabolic
Characteristic
ECO mode
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Parameter
p1300 = 0
p1300 = 1
p1300 = 2
Parameter
p1300 = 4
(linear char‐
acteristic
ECO)
or
p1300 = 7
(parabolic
characteris‐
tic ECO)
SINAMICS G120XA converter