What is Safe brake control?
The “Safe Brake Control” function (SBC) is used to control holding brakes that function according to the closed-circuit principle (e.g. motor holding brake). The command for releasing or applying the brake is transmitted to the Motor Module/Power Module via DRIVE-CLiQ.
How does Safe torque off work?
How it Works. The STO function ensures that no torque can act upon the motor by blocking electrical signals from the power devices to the motor. As an emergency stop function, STO can reduce torque generating energy immediately and allow the motor to come to a dead stop using natural inertia and friction from the load.
What is STO in vfd?
Safe Torque Off, known as STO for short is a safety feature on newer VFDs that turns off power on the VFD output to prevent the motor from producing torque. This is done through the VFD’s hardware to ensure fault tolerance.
What is the purpose of the SS1 and SS2 signals?
SS1 allows a system with high inertia to be brought to standstill very quickly. Safe Stop 2 — SS2: Like SS1, this function uses a controlled deceleration to safely stop the motor, but once the motor is stopped, it activates the SOS function (rather than STO).
What is an STO switch?
The STO function is the most basic drive-integrated safety function. It ensures that no torque-generating energy can continue to be applied to a motor and prevents unintentional starting.
What is safe torque off in ABB VFD?
Many ABB inverters have a feature called Safe Torque Off or STO, but what is it? Safe Torque Off is a function that prevents the inverter from generating torque in the motor. It ensures that no torque generating energy continues to act on the motor and that the motor cannot be re-started until the STO is removed.
What is Coast to stop in VFD?
Coast to stop means disconnecting the motor from the VFD output power supply. This allows the motor to stop itself in a certain span of time; or you can say, just freeing the motor from the operation.
What is a sto fault?
An STO stop is notified to the control DSP and creates a fault that can be read externally, however its performance is totally independent from control or firmware. When the STO is not connected it is virtually impossible to apply power to the drive. STO inputs have an input voltage of +24 V.
What is sto connection?
Triton Go Servo Drive includes a Safe Torque Off (STO) connector. The STO is a safety system that prevents motor torque in an emergency event while Triton Go remains connected to the power supply. This will slow down the motor shaft until it stops under its own inertia and frictional forces.
What is an STO signal?
The Safe Torque Off (STO) is an electronic signal used in industrial motor controllers for safety reasons.
What is ramp to stop?
Ramp to stop means applying deceleration time to the motor (ramp-down time set in VFD) to stop the motor in that time. The motor is not disconnected at all in the ramp to stop.