Siemens SINAMICS V20 User Manual

Commissioning via the built-in BOP
5.6 Function commissioning
SINAMICS V20 Converter
90 Operating Instructions, 10/2019, A5E34559884-012
5.6.2.3 Setting the voltage boost
Functionality
For low output frequencies, the V/f characteristics only give a low output voltage. The ohmic
resistances of the stator winding play a role at low frequencies, which are neglected when
determining the motor flux in V/f control. This means that the output voltage can be too low in
order to:
● implement the magnetization of the asynchronous motor
● hold the load
● overcome losses in the system.
The output voltage can be increased (boosted) in the converter using the parameters as
shown in the table below.
Parameter
Boost type
Description
P1310 Continuous boost
[%]
This parameter defines boost level relative to P0305 (rated motor current) applicable to
both linear and quadratic V/f curves.
Range: 0.0 to 250.0 (factory default: 50.0)
The voltage boost is effective over the complete frequency range whereby the value
continually decreases at high frequencies.

Siemens SINAMICS V20 Specifications

General

Power Range	0.12 kW to 30 kW
Overload Capacity	150% for 60 seconds
Protection Class	IP20
Storage Temperature Range	-40°C to +70°C
Altitude	Up to 1000 m without derating
Input Voltage	3AC 380 V to 480 V
Output Voltage	0 V to Input Voltage
Control Modes	V/f control
Ambient Temperature Range	-10°C to +60°C
Relative Humidity	5% to 95%, non-condensing
Communication Interfaces	Modbus RTU
Braking Resistor	Optional external