Starting Current (Voltage Boost) When Accelerating / I_Start Accel; Starting Current (Voltage Boost) When Starting / I_Start Start - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
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.
Dependency: The starting current (voltage boost) is limited by the current limit p0640.
The accuracy of the starting current depends on the setting of the stator and feeder cable resistance (p0350, p0352).
Refer to: p1300, p1311, p1312, r1315
Notice: The starting current (voltage boost) increases the motor temperature (particularly at zero speed).
Note: The starting current as a result of the voltage boost is only effective for U/f control (p1300).
The boost values are combined with one another if the permanent voltage boost (p1310) is used in conjunction with
other boost parameters (acceleration boost (p1311), voltage boost for starting (p1312)).
However, these parameters are assigned the following priorities: p1310 > p1311, p1312
p1311[0...n]

Starting current (voltage boost) when accelerating / I_start accel

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: U/f open-loop control
Not for motor type: -
Min
0.0 [%]
Description: p1311 only results in a voltage boost when accelerating and generates a supplementary torque to accelerate the
load.
The voltage boost becomes effective for a positive setpoint increase and disappears as soon as the setpoint has
been reached. The build-up and withdrawal of the voltage boost are smoothed.
The magnitude of the boost in Volt at a frequency of zero is defined as follows:
Voltage boost [V] = 1.732 * p0305 (rated motor current [A]) x r0395 (stator/primary section resistance [ohm]) x p1311
(voltage boost when accelerating [%]) / 100 %
Dependency: The current limit p0640 limits the boost.
Refer to: p1300, p1310, p1312, r1315
Notice: The voltage boost results in a higher motor temperature increase.
Note: The voltage boost when accelerating can improve the response to small, positive setpoint changes.
Assigning priorities for the voltage boosts: refer to p1310
p1312[0...n]

Starting current (voltage boost) when starting / I_start start

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: U/f open-loop control
Not for motor type: -
Min
0.0 [%]
Description: Setting for an additional voltage boost when powering-up, however, only for the first acceleration phase.
The voltage boost becomes effective for a positive setpoint increase and disappears as soon as the setpoint has
been reached. The build-up and withdrawal of the voltage boost are smoothed.
Dependency: The current limit p0640 limits the boost.
Refer to: p1300, p1310, p1311, r1315
Notice: The voltage boost results in a higher motor temperature increase.
Note: The voltage boost when accelerating can improve the response to small, positive setpoint changes.
Assigning priorities for the voltage boosts: refer to p1310
350
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
250.0 [%]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
250.0 [%]
List Manual (LH2), 04/2014, A5E03263479A
Access level: 2
Func. diagram: 6300, 6301
Unit selection: -
Expert list: 1
Factory setting
0.0 [%]
Access level: 2
Func. diagram: 6300, 6301
Unit selection: -
Expert list: 1
Factory setting
0.0 [%]
SINAMICS G130/G150