SOFT STARTERS
Unlike inverters, they do not use a frequency-voltage conversion, and therefore do not facilitate motor speed control. Their simpler design also makes them much cheaper than frequency inverters. We offer several model ranges:
- from the simplest designs for no-load starting to heavy-duty starts
- with the possibility of controlled stopping
- with the possibility of communicating with control systems
- with the possibility of integrated motor current protection, etc.
SIRIUS 3RW soft starters
SIRIUS soft starters are the best solution when direct-on-line or star/delta starting are not suitable for three-phase motors, because mechanical impacts in the machine or voltage dips in the power supply system can often cause problems. A full and comprehensive range of soft starters with intelligent functions offers a softer alternative for almost every application. SIRIUS 3RW soft starters Classified into
Basic Performance – 1,5-315 kW
High Performance - SIRIUS 3RW55
Due to its exceptional functionality, the intelligent SIRIUS 3RW55 soft starter can solve even the most difficult starting and stopping tasks simply and particularly gently. Integrated smart functions (for example, pump cleaning, pump stopping, automatic parameterization, condition monitoring) help operators to run their pumps smoothly. Thanks to the SIRIUS 3RW55 Failsafe soft starters with integrated Safe Torque Off (STO) functionality, safety-related applications can also be realized.
Three-phase controlled for optimal motor start
Integrated, safety-related shutdown for SIL 1/PL c and SIL 3/PL e (with STO)
ATEX/IECEx-certified for use in hazardous areas
Engineering in the TIA Portal
A wide range of communications interfaces (PROFINET, PROFIBUS, EtherNet/IP, Modbus)
Direct communication into cloud based solutions via OPC UA
Motor control and diagnostic data via a standard web browser without additional software
Integrated HMI (Human-Machine-Interface) with colour display
Media redundancy for reliable network availability
Integration in the process control system PCS 7 V9.0 SP2 with the 3RW5 block library
General Performance - SIRIUS 3RW52
The SIRIUS 3RW52 soft starter is an ideal alternative to star-delta starters. As an all-rounder, it covers all drive types.
- Three-phase controlled for optimal motor start
- Parameterization with rotary potentiometer
- A wide range of communications interfaces (PROFINET, PROFIBUS, EtherNet/IP, Modbus)
- HMI (Human-Machine-Interface) with display optional
- Engineering in the TIA Portal
- Integration in the process control system PCS 7 V9.0 SP2 with the 3RW5 block librar
Basic Performance - SIRIUS 3RW30/3RW40/3RW50
Thanks to their compact design, SIRIUS 3RW30/40/50 soft starters are the ideal solution for all standard applications.
- Two-phase controlled for standard applications
- Parameterization with rotary potentiometer
- Optional communications interface (PROFINET, PROFIBUS, EtherNet/IP, Modbus)
- Visualization of motor data via optional HMI or analog output
- Integrated motor overload and intrinsic device protection
- Engineering in the TIA Portal
- ATEX/IECEx-certified for use in hazardous areas
One considerable advantage of SIRIUS 3RW55 soft starters is their media redundancy thanks to the new Profinet High Feature communication module and its integrated Ethernet switch. It provides a ring topology in which communication can be maintained via a second port even if the power fails.
SIRIUS 3RW55 soft starter communicates now addionally with EtherNet/IP. This means it is able to communicate with a wide range of process control systems.
All SIRIUS soft starter have a wide-range voltage versions, so that even if there is a voltage dip, the continued operation of the soft starter, the motor and the application is ensured. This level of electrical ruggedness means that operation is secured even in power supply systems with sporadic voltage dips.
