Siemens SINAMICS G120 List Manual page 201

p1310[0...n] Starting current (voltage boost) permanent / I_start (Ua) perm
PM230 Access level: 2
PM230_STO
Can be changed: U, T
PM250, PM260
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.
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).
For vector control, the starting current is realized using p1610.
Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
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
p1310[0...n] Starting current (voltage boost) permanent / I_start (Ua) perm
PM240 Access level: 2
Can be changed: U, T
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 p0096 = 1), in the vicinity of low output frequencies, a minimum
current is impressed with the magnitude of the rated magnetizing current.
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 G120 Control Units CU240B-2/CU240E-2
List Manual (LH11), 01/2016, A5E33839529
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
250.0 [%]
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
250.0 [%]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6300, 6301
Factory setting
50.0 [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6300, 6301, 6851
Factory setting
50.0 [%]
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