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Description
3.1
Applications
The drive is a medium-voltage drive for phase-rotation-controlled machines. The drive is
designed for sophisticated single- and multi-motor applications. The drive satisfies the
requirements for high dynamics, operation at low frequency and four-quadrant operation.
Typical applications include roller drives (cold and warm) and hoisting plants.
3.2
Safety concept
The device and its associated components are subject to an extensive safety concept. When
used properly, the security concept guarantees safe installation, safe operation as well as safe
service and maintenance.
The safety concept encompasses safety components and functions to protect the device and
operators. The device is also equipped with monitoring functions to protect external
components.
The device operates safely when the interlock and protection systems are functioning properly.
Nevertheless, there are areas that are hazardous for personnel and that cause material
damage if the safety information of all the instructions and the labels on the device are not
strictly complied with.
3.2.1
Safety components and functions
The following safety components and functions are installed to protect personnel:
● The make-proof grounding switch for grounding the voltage DC link.
● The electromechanical door interlocking system prevents access to the power unit while
● The electromechanical interlock system for the make-proof grounding switch prevents the
● The EMERGENCY OFF mushroom pushbutton in the cabinet door is a pushbutton with
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE
operational. The doors cannot be opened until the grounding switch has been closed. The
door for the control section, however, can be opened for monitoring purposes even during
operation.
make-proof grounding switch from closing for the voltage DC link. The make-proof
grounding switch can only be closed if the circuit-breaker is open and the DC link has been
completely discharged.
mechanical interlock system for EMERGENCY OFF, Stop Category 0 (standard).
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