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p1310[0...n]
Voltage boost permanent / U_boost perm
VECTOR
Can be changed: U, T
Data type: Floating Point
P-Group: V/f control
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 fre-
quency, 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] = p0305 (rated motor current [A]) x p0350 (stator/primary section resistance [ohm]) x p1310 (per-
manent 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 V/f characteristics and is calculated as follows:
Voltage boost = p0305 (rated motor current x p0350 (stator/primary section resistance) x p1310 (permanent voltage
boost)
Dependency:
Setting in p0640 (motor overload factor [%] limits the boost.
For closed-loop vector control, the permanent voltage boost (p1310) has no effect as the drive converter automati-
cally sets the optimum operating conditions.
Refer to: p1300, p1311, r1315
Notice:
The voltage boost increases the motor temperature (particularly at zero speed).
Note:
The voltage boost is only effective for V/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)).
However, these parameters are assigned the following priorities: p1310 > p1311
p1311[0...n]
Voltage boost at acceleration / U_boost accelerate
VECTOR
Can be changed: U, T
Data type: Floating Point
P-Group: V/f control
Min
0.0 [%]
Description:
p1311 only results in a voltage boost when ramping-up and generates a supplementary torque/force for accelerat-
ing.
The voltage boost becomes effective for a positive setpoint increase and disappears as soon as the setpoint has
been reached.
The magnitude of the boost in volt at a frequency of zero is defined as follows:
Voltage boost [V] = p0305 (rated motor current [A]) x p0350 (stator/primary section resistance [ohm]) x p1310 (per-
manent voltage boost [%]) / 100 %
Dependency:
Setting in p0640 (motor overload factor [%] limits the boost.
Refer to: p1300, p1310, 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.
Prioritization of the voltage boosts: refer to p1310
Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Data set: DDS
Units group: PERCENT
Max
250.0 [%]
Data set: DDS
Units group: PERCENT
Max
250.0 [%]
Parameters
Parameter list
Access level: 2
Function diagram: 1690,
6300
Unit selection: -
Factory setting
50.0 [%]
Access level: 2
Function diagram: 1690,
6300
Unit selection: -
Factory setting
0.0 [%]
1-173
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