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Emergency Stops

The Back EMF (BEMF) of a Permanent Magnet Servo motor is commonly used to quickly stop a mechanism as a result of a power failure. There are different category of stop modes and this one will address a safe, reliable and less threatening method of safely stopping a motor during this event.

The machine receives an operational stop (disable) command and brakes the drive using the set braking ramp (STOPMODE and ACTFAULT parameters set to 1).

Bringing the motor to a standstill by interrupting the mains supply and using controlled electronic braking (STOPMODE and ACTFAULT parameters set to 1). The 24 V supply for the servo amplifier must remain constant.

Bringing the motor to a standstill by immediately switching off the amplifier power supply (STOPMODE and ACTFAULT parameters set to 1). The switching sequence is precisely determined by this circuit in order to avoid undesirable fault messages and servo amplifier failures.

Valid for AKD, S300, S400, S600, S700

The control functions Stop, Emergency Stop and Emergency Off are defined by IEC 60204. Notes for safety aspects of these functions can be found in ISO 13849 and IEC 62061.