Protection Against Dangerous Movements - Bosch Rexroth IndraControl VDP 16.1 Series Project Planning Manual

3-6
Safety Instructions for Electric Drives and Controls
3.7

Protection Against Dangerous Movements

Dangerous movements can be caused by faulty control of the connected
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 integrated
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.
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
DANGER
integrated in the installation. Unintended machine
motion is possible if monitoring devices are disabled,
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 entering the machine's range
of motion:
- use safety fences
- use safety guards
- use protective coverings
- install light curtains or light barriers
Fences and coverings must be strong enough to
⇒
resist maximum possible momentum, especially if
there is a possibility of loose parts flying off.
Mount the emergency stop switch in the immediate
⇒
reach of the operator. Verify that the emergency stop
works before startup. Don't operate the machine if the
emergency stop is not working.
Isolate the drive power connection by means of an
⇒
emergency stop circuit or use a starting lockout to
prevent unintentional start.
Make sure that the drives are brought to a safe
⇒
standstill before accessing or entering the danger
zone. Safe standstill can be achieved by switching off
the power supply contactor or by safe mechanical
locking of moving parts.
VDP 16.1, VDP 40.1 and VDP 60.1
DOK-SUPPL*-VDP16/40/60-PR02-EN-P