UL 1004-6:2017 PDF Download

The UL 1004-6:2017 standard is designed to be used in conjunction with the UL 1004-1 standard for Rotating Electrical Machines - General Requirements. This standard provides supplementary or amended requirements for servo and stepper motors, with the requirements of UL 1004-1 still applicable unless modified by this standard.

The purpose of this standard is to assess the suitability of servo and stepper motors for normal use when connected to the appropriate controller or drive within the motor's declared normal operating region, as determined by the manufacturer. It ensures that these motors meet the necessary safety and performance criteria.

However, it is important to note that this standard does not address the efficacy of motor overtemperature protection under normal or abnormal conditions, nor does it cover the operation of motors in hazardous (Classified) locations. These topics are outside the scope of this standard and may be addressed by other applicable standards.