Safety for compact stepper motors

Written by: Tom Austin-Morgan | Published:

B&R Industrial Automation's compact ACOPOSmicro Stepper drive is now available with Safe Torque Off (STO). A safety function that will be added to all ACOPOSmicro drives over time.

The company has integrated safe pulse disabling in ACOPOSmicro Stepper drives for shutting down safely and pre-venting unwanted startup. Safety ratings up to SIL2 / PLD / CAT 3 are claimed to be achieved depending on the wiring.

Safe pulse disabling interrupts the power being sent to the drive. Electrical torque can then no longer be generated, so the drive coasts to a stop. The requirements for preventing unexpected startup in accordance with EN 1037 as well as the requirements concerning Category 0 stop functions in accordance with EN 60204-1 are met. The requirements concerning the STO safety function in accordance with EN 61800-5-2 are also met.

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