Unitek DS-400.2 Series, Руководство пользователя

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Basic information
DS 400-2 04/2019 - V01 14
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2.14 Risks
The manufacturer aims to keep the remaining risks emanating from the unit
as low as possible by means of constructive, electrical, and software measures.
In the field of drive engineering the following known remaining risks must be
considered regarding the risks arising from machines, vehicles, and installations.
Impermissible movements
caused by:
• failure of safety watchdogs or switched-off safety watchdogs during commissioning or
repair works
• software errors in upstream controls, errors in bus systems
• non-monitored hardware and software errors in actuating elements and connecting
cables
• inverted sense of control
• faults during the parameter setting and wiring
• limited response time of the control features. Ramps, limits
• operations not permitted in the specifications
• electromagnetic interferences
• electrostatic interferences, lightning strikes
• failure of components
• failure in the brakes
Dangerous temperatures
caused by:
• faults during the installation
• faulty connections, bad contacts, aging
• faults in the electric safety system, incorrect types of fuses
• operations not permitted in the specifications
• negative climatic conditions, lightning strikes
• failure of components
Dangerous voltages
caused by:
• faulty earthing of the unit or motor
• faulty connections, bad contacts, aging
• faulty potential isolation, failure of components
• conductive contamination, condensation
Dangerous fields
The units, the inductive and capacitive accessories as well as the power wiring can
generate strong electric and electromagnetic fields. These fields may be dangerous
for persons having electronic medical aids or appliances (e.g. cardiac pacemakers).
Sufficient distance to these electrical parts must be observed.
The switch cabinet must be labeled accordingly.