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04
05
07
08
09
NOTICE
p1302 bit 5 = 1: (only for field orientation p1302 bit 4 = 1)
This setting is only selected for very fast acceleration.
Note
For bit 04:
Field orientation for the closed-loop control of application class Standard Drive Control (p0096 = 1). The field orientation
is activated with the automatic calculation if p0096 is set = 1.
For bit 05 (only effective for p1302.4 = 1):
The starting current when accelerating (p1311) generally results in an increase in the absolute current and flux. With
p1302.5 = 1 the current is only increased in the direction of the load. p1302.5 - in conjunction with p1310 and p1311
- are decisive when it comes to defining the quality of the starting response.
For bit 07:
For field orientation (bit04 = 1), an Iq,max controller supports the current limiting controller (see p1341). Inhibiting the
integral component can prevent the drive from stalling under overload conditions.
For bit 08:
Taking into account the saturation characteristic can be activated to improve faster starting operations for high-rating
motors.
For bit 09:
For field orientation (bit04 = 1), while the induction motor is being magnetized, the current is automatically increased
if the magnetization time p0346 is shortened.
p1310[0...n]
Starting current (voltage boost) permanent / I_start (Ua) perm
Access level: 2
Can be changed: T, U
Unit group: -
Min:
0.0 [%]
Description:
Defines the voltage boost as a [%] referred to the rated motor current (p0305).
The magnitude of the permanent voltage boost is reduced with increasing frequency so that at the rated motor
frequency, the rated motor voltage is present.
The magnitude of the boost in Volt at a frequency of zero is defined as follows:
Voltage boost [V] = 1.732 x p0305 (rated motor current [A]) x r0395 (stator/primary section resistance [ohm]) x p1310
(permanent voltage boost [%]) / 100 %
At low output frequencies, there is only a low output voltage in order to maintain the motor flux. However, the output
voltage can be too low in order to achieve the following:
- magnetize the induction motor.
- hold the load.
- compensate for losses in the system.
This is the reason that the output voltage can be increased using p1310.
The voltage boost can be used for both linear as well as square-law U/f characteristics.
For field orientation (p1302.4 = 1, default setting for Standard Drive Control p0096 = 1), in the vicinity of low output
frequencies, a minimum current is impressed with the magnitude of the rated magnetizing current. In this case, for
p1310 = 0%, a current setpoint is calculated that corresponds to the no-load case. For p1610 = 100 %, a current
setpoint is calculated that corresponds to the rated motor current.
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Field orientation
Starting current when accelerating without flux boost
Inhibit Iq,max controller I component
Saturation characteristic for the starting current
Current boost for fast magnetization
Yes
Yes
Yes
Yes
Yes
Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Scaling: -
Unit selection: -
Max:
250.0 [%]
Parameters
7.2 Parameter list
No
-
No
-
No
-
No
-
No
-
Dynamic index: DDS, p0180
Function diagram: 6300, 6301,
6851
Factory setting:
50.0 [%]
669
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