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3-6
Bosch Rexroth AG | Electric Drives and Controls
Safety Instructions for Electric Drives and Controls
3.7
Protection Against Dangerous Movements
Dangerous movements can be caused by faulty control of the con-
nected motors. Some common examples are:
• improper or wrong wiring of cable connections
• incorrect operation of the equipment components
• wrong input of parameters before operation
• malfunction of sensors, encoders and monitoring devices
• defective components
• software or firmware errors
Dangerous movements can occur immediately after equipment is
switched on or even after an unspecified time of trouble-free operation.
The monitoring in the drive components will normally be sufficient to
avoid faulty operation in the connected drives. Regarding personal
safety, especially the danger of bodily injury and material damage, this
alone cannot be relied upon to ensure complete safety. Until the inte-
grated monitoring functions become effective, it must be assumed in
any case that faulty drive movements will occur. The extent of faulty
drive movements depends upon the type of control and the state of
operation.
DANGER
Dangerous movements! Danger to life, risk of injury, severe bodily
harm or material damage!
• Ensure personal safety by means of qualified and tested higher-level
monitoring devices or measures integrated in the installation. Unin-
tended machine motion is possible if monitoring devices are dis-
abled, bypassed or not activated.
Pay attention to unintended machine motion or other malfunction
in any mode of operation.
• Keep free and clear of the machine's range of motion and moving
parts. Possible measures to prevent people from accidentally enter-
ing the machine's range of motion:
– use safety fences
– use safety guards
– use protective coverings
– install light curtains or light barriers
Rexroth IndraControl VCP 20 | R911299722 / 02
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