STO is a safety feature implemented in inverter drives to prevent the motor generating any torque so that it is reliably stopped when a safety function is activated. Once the STO is activated, power to the motor is cut off, and the drive ensures that the motor coasts to stop with no additional torque generated. When is STO Required?
If an STO function is not present on the inverter, external components such as a contactor or relay can be used to power off the motor in case of a safety event. How can IMO help? Simple!
The STO circuit is comprised of two identical channels, each of which must be energized in order for the drive to produce motion. Each STO input is opto-isolated and accepts 24 V levels directly without the need for external current limiting resistors. IMPORTANT: The drive might be equipped with an STO bypass circuit board.
All IMO inverters come equipped with STO onboard as a standard feature making the engineer’s job easier by ensuring that all IMO inverter-driven motors can be safely shut down. This also avoids the need for external components which are costly and can themselves be less reliable than onboard electronic STO.
Our home solar PV systems and energy storage products are engineered for reliability, safety, and efficient deployment in Polish conditions. All systems include comprehensive monitoring and control with remote management capabilities.
If the drive flash between STO/NST, then NST /STO, it looks like a short circuit between 0V and internal 24V of the drive.The recommendation is to remove all terminal (…
Customer ServiceIf the drive flash between STO/NST, then NST /STO, it looks like a short circuit between 0V and internal 24V of the drive.The recommendation is to remove all terminal (…
Customer ServiceThe STO circuit is comprised of two identical channels, each of which must be energized in order for the drive to produce motion. Each STO input is opto-isolated and accepts 24 V levels directly without the …
Customer ServiceDrives Frequency inverters DRV-24 - universal AS24DRV20C7 « Go back to product list Frequency inverter 0.75 kW, STO; single-phase input / three-phase output; 30 month warranty …
Customer ServiceIssue:STO on AT600 and ATV900 Drives.Product Line:Altivar Process DrivesEnvironment:AllCause:NAResolution:STO is not a fault code. It is a state of the drive. It …
Customer ServiceThe STO circuit is comprised of two identical channels, each of which must be energized in order for the drive to produce motion. Each STO input is opto-isolated and …
Customer ServiceDescription This reference design outlines a safe torque off (STO) subsystem for a 3-phase inverter with CMOS input isolated IGBT gate drivers. The STO subsystem employs a …
Customer ServiceThe inverter reports the activation of the STO safety function to the higher-level controller via two digital outputs. Figure 1: Connection for the feedback signal "STO is active" …
Customer ServiceSTO is a safety feature implemented in inverter drives to prevent the motor generating any torque so that it is reliably stopped when a safety function is activated. Once …
Customer ServiceUse power supply units that meet the PELV (Protective Extra Low Voltage) requirements. Connect the 0 Vdc outputs of all power supply units to FE (functional …
Customer ServiceLatest developments in solar PV technology, energy storage advancements, commercial power solutions, and industry insights from our team of renewable energy experts across Poland.
Contact our technical sales team for home solar PV systems and energy storage solutions in Poland. We provide customized quotations based on your specific project requirements and energy needs.
STAN BESS Sp. z o.o. ul. Elektryczna 15, 00-001 Warsaw, Poland
