Baumuller b maXX BM3400 Series - 2.9 Safety precautions in normal operation; 2.10 Dangers due to residual energy; 2.11 Safety categories

T 2 Fundamental safety instrutions
2.9 Safety preautions in normal op eration
• At the installation location of the device observe the safety regulations for the installation, which is
installed into this device.
• Provide the device with additional monitoring- and safety devices, in case safety precautions determine
this.
2.10 Dangers due to residual energy
Electr ical residual energy After separating the device from the mains, parts under voltage as e.g.
power connections may earliest be touched after 10 minutes, because the
capacitors in the device are discharged not before 10 minutes. Also pay
attention to the instructions on the device.
In case you have c onnected additional capacitors to the DC-link, the
DC-link discharching also can last much longer. In this case you must
yourself determine the necessary waiting time.
Mechanical residual
energy
The mechanical residual energy is dependant upon the application. Driven
parts can still rotate or move for a c ertain time, after the mains supply has
been disconnected. Please, provide adequate safety devices.
2.11 Safety ategories
Dependent on the possible dangers (these are rated due to the consideration of the severity of the injuries,
the frequency of the length of stay within the danger area and possibilities in order to prevent dangers) safety-
related components of machines must meet certain safety criteria. The requirements on the safety-related
parts are divided into five categories in the standard EN954-1 .
In ca te gory B basic requirements, in category 1 additionally safety-technical checked components and prin-
ciples are required . In category 2 an error between test intervals can lead to a loss of the safety function.
category 3 accords to the level „single-error-safe with partial error detection“. The safety-related components
must be implemented in such a manner, that a single error does not lead to the loss of the safety function,
whereat not all possible errors are independently detected by the system. A n accumulation of errors therefore
can lead to the loss of the safety function.
Category 4 accords to the level „Self-monitoring“. The component self-contained detects possible errors and
signals these secure from loss of the safety function on time. Also at occurence of up to three errors, which
are independent from one another the safety function always is maintained.
26 Instrution Manual b maXX ® BM3400
from 206 Doument No.: 5.07013.03 Baumueller Kamenz GmbH