Certified quality management system
ST300 - the smart one - Frequency inverter 230V and 400V
The compact ST300 series frequency inverter impresses with its design and is ideal for installation in switchgear. The possibility of side-by-side installation means that the usually limited space in switch cabinets can be utilised as effectively as possible. As the power is fed in from above, installation in large systems is particularly efficient. Alternatively, frequency inverters with a rated output of up to 4 kW can be mounted on a DIN 35 mounting rail using an adapter plate. The control cable is connected via terminals with push-in technology and is therefore particularly uncomplicated, quick and safe. Shield support plates at the top and bottom are available for EMC-compliant installation. Every frequency inverter in the ST300 series has the STO safety function (SIL3, PLe). The frequency inverter is suitable for TT, TN and IT systems. Parameterisation of the frequency inverter is extremely simple thanks to the carefully compiled German operating instructions. Sourcetronic also has an extensive range of frequency inverter accessories such as EMC filters, mains chokes and braking resistors.
Areas of application for the ST300 frequency inverter
A frequency inverter is always necessary if a drive is to be operated with a variable frequency. Large industrial machines, pump systems or compressors are just some of the applications for which a frequency inverter is the right choice.
Important information about the frequency inverters can be found here:
- Only suitable for 3-phase motors
- Input voltage range single-phase: 200 V(-15%) – 240 V(+10%)
- Input frequency range: 50 Hz / 60 Hz ( ± 5%)
- Output frequency range: 0 Hz - 599 Hz
- Motor voltage three-phase: 0 - 230V
- Comprehensive German user manual
- STO: Standard-compliant emergency stop function according to SIL3 level
- Shield grounding plates
- Side-by-side mounting
- Flexible digital and analog I/Os
- Modbus RTU interface
- Precise vector control and PID regulation
- Integrated EMC filter category C3
- Input voltage range three-phase: 380 V(-15%) – 480 V(+10%)
- Input frequency range: 50 Hz / 60 Hz ( ± 5%)
- Output frequency range: 0 Hz - 599 Hz
- Comprehensive German user manual
- STO: Standard-compliant emergency stop function according to SIL3 level
- Shield grounding plates
- Side-by-side mounting
- Flexible digital and analog I/Os
- Modbus RTU interface
- Precise vector control and PID regulation
- Integrated EMC filter category C3
Video: Connection terminals of the ST300 frequency inverter
This video explains the connection terminals of an ST300 Sourcetronic frequency inverter.
Frequency inverter feature comparison - All Sourcetronic inverters in comparison
| Features | ST150 | ST300 | ST500 | ST600 | ST600SP |
|---|---|---|---|---|---|
| Power Range/kW Voltage Range |
0.75 - 2.2 kW - 230 V | 0.75 - 7.5 kW - 230 V | 1.5 - 500 kW - 400 V | 4 - 55 kW - 400 V | |
| 0.75 - 2.2 kW - 400 V | 0.75 - 7.5 kW - 400 V | 0.75 - 710 kW - 400 V | |||
| 0.75 - 132 kW - 500 V | |||||
| 15 - 132 kW - 690 V | |||||
| Control Mode | U/f Control | ||||
| Vector Control without PG | |||||
| Vector Control with PG | |||||
| Number of Analog Inputs | 1 | 2 | 3 | 2 | |
| Number of Analog Outputs | 1 | 2 | 1 | ||
| Number of Digital Inputs | 5 (NPN) | 8 | 6 | ||
| Number of Digital Outputs | 0 | 1 (NPN) | 2 (NPN) | ||
| Number of Relay Outputs | 1 (Normally Closed Contact) | 2 (1 Changeover Contact, 1 Normally Closed Contact) | |||
| Security Function | No | STO (SIL3, PLe) | No | STO (SIL2) | |
| Control Panel | Non-removable | Removable | Non-removable | ||
| Motor Types | Three-phase Asynchronous Motors | ||||
| Synchronous Motors | Synchronous Motors | ||||
| Communication | RS485 (Modbus RTU Protocol) | ||||
| Profibus DP | |||||
| CANopen | |||||
| PROFINET | |||||
| Ethernet/IP | |||||
| Modbus TCP | |||||
| Protection Class | IP 20 | IP 55 | |||
| Built-in EMC Filter | C3 Filter | C3 Filter: Standard integrated from 5.5 kW, switchable from 15 kW (default setting: Off) | C3 Filter | ||
| Motor Temperature Monitoring | No | PTC | |||
| PT100 | PT100 with expansion card | ||||
| PT1000 | PT1000 with expansion card | ||||
| Possible Side-by-Side Mounting with Narrow Side Clearance | Yes | Yes, size-dependent | No | ||
| Possible DIN Rail Mounting | Yes | With DIN rail adapter | For 230 V devices up to and including 2.2 kW For 400 V devices up to and including 4 kW |
No | |
| Integrated Brake Unit | Yes | Up to 22 kW | Up to 37 kW | Yes | |
| Special Features | Top Feed-in | Shield Support Plates | Expansion Options (Communication, I/O, Encoder Cards) | ||
| Top Feed-in | Integrated Main Switch | ||||
| Control Panel Potentiometer | No | Yes | Digital Control Panel Rotary Encoder | No | |
| Display | 1-line 7-Segment Display | 2-line 7-Segment Display | Multilingual LCD Display | ||
| Control Terminal Connection | Screw Terminals | Push-In Terminals | Screw Terminals | ||