Dold Soft Starter, 1.5 kW, 3 kW, 230 V ac, 400 V ac, 1 Phase, IP30

Soft starter, BA9010

One of the three motor phases is influenced in the BA9010 by phase control in such a way that the current in this phase rises steadily. The motor torque behaves in exactly the same way during start-up. This guarantees that the drive can start up without jerking. It is thus impossible for drive elements to be damaged, because the abrupt starting torque caused by direct starting is not generated. This property enables a cost-efficient design for the drive elements.
A marked reduction of starting noise is also perceived. Slippage or tipping over of items being conveyed on belts is avoided.
After starting, the power electronics are bridged via an internal relay contact to minimise losses in the device.

Applications

Machines with gear, belt and chain drives
Conveyor belts, fans, pumps, compressors
Packaging machines, door operating mechanisms
Inrush current limitation for single-phase transformers

Features

Increases the service life of asynchronous motors and mechanical drive components
For motor ratings up to 3 kW
Single-phase motor control
Easy installation even in existing systems
No need for a neutral conductor
Starting time and starting torque can be adjusted separately.
Can be combined with motor brake units.
Suitable for snapping onto a 35 mm standard top-hat rail
An f/V converter is frequently not needed for simple applications
Power semiconductor bridged after successful start-up
LED displays
Overall width 45 mm

Warning

If devices are used in 230 V three-phase networks, the next higher power stage must be used for a given motor power, because the motor current determines the overall size of the device.
The starting current in the network cannot be lowered with these devices. In order to achieve this simultaneously with torque reduction, the BA9026 must be used, for example.
The BA9010 must not be operated with a capacitive load (e.g. reactive power compensation) at the output.
In the decoupled state (without load), the starting behaviour is not particularly smooth.