Operating Instructions – Safety-Related BST Brake Module
9
2
Startup/operation
Safety Notes
2.7
Startup/operation
• When the safety-related control voltage V
24 V safe
/ functional control voltage V
24 V in
is disconnected, the DC link voltage V
DC link
is still present at the brake module.
• The safety concept is only suitable for performing mechanical work on the system/
machine components.
• All poles must be disconnected from the supply system when work is carried out on
the electrical section of the system. Dangerous voltages may still be present for up
to 10 minutes after disconnection from the power supply system.
• You have to take into account that, in case of a fault, the application time of the
connected brake is longer, which means the drive might coast.
– For maximum brake application times, refer to chapter "Technical Data" of the
operating instructions for the BST and SEW disk brakes.
– Note: If coasting to a halt results in application-dependent hazards, take addi-
tional protective measures (e.g. movable covers with closure), which cover the
hazardeous area until persons are no longer in danger.
– The additional protective covers must be designed and integrated to meet the
requirements stipulated in EN ISO 12100:2010 and the requirements determined
for the machine based on the risk assessment.
– After activating the stop command, access to the machine must remain blocked
until the drive has reached standstill, or the access time has to be determined to
ensure that an adequate safety distance is maintained.
• The states of LED V1 and LED V2 must not be regarded as safety-relevant. The fact
that the LED V1 and LED V2 are no longer illuminated does not indicate that the
safety-relevant BST brake module is de-energized and the brake is applied. Even if
LED V1 and LED V2 are not illuminated, DC link voltage V
DC link
might be present at
the BST brake module.
• The safety-related BST brake module does not detect a mechanical fault (such as
brake lining wear) of the disk brakes of SEW-EURODRIVE.
2.8
Inspection/maintenance
Observe the notes in chapter "Inspection/Maintenance" (page 28).
2.9
Disposal
Dispose the BST in accordance with the material structure and the regulations in force
for instance as:
• Iron
• Copper
• Aluminum
• Plastic
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