Protective Extra-Low Voltage For Protection Against Electric Shock; Protection Against Dangerous Movements - Bosch Rexroth EC302 Montageanleitung

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2.6.3 Protective extra-low voltage
for protection against electric
shock
All connections and terminals with voltages
of 5 to 50 V on Rexroth products are pro-
tective extra-low voltages which are desi-
gned to be safe to touch in accordance with
the product standards.
WARNING
High voltage due to improper
connection!
Danger to life, risk of injury due to elec-
tric shock!

Only devices, electrical components,
and cables with protective extra-low
voltage (PELV) may be connected to
connections and terminals with volta-
ges of 0 to 50 V.

Only connect voltages and electric
circuits that are safely isolated from
dangerous voltages. Safe isolation is
obtained by means of isolating trans-
formers, safe opto-couplers, or bat-
tery operation disconnected from the
mains.
EC30X | 3 609 929 728/2014-01
2.6.4 Protection against dangerous
movements
Dangerous movements can be caused by
improper actuation of connected motors.
Causes can be any of the following:
• Careless or improper wiring
• Errors while operating the components
• Incorrect input of parameters prior to
commissioning
• Error in the measurement transducer or
signal transducer
• Defective components
• Software errors
These errors can occur immediately after
the system has been switched on or after an
indefinite operating time.
The monitoring devices in the drive compo-
nents almost completely eliminate malfunc-
tions in the connected drives. However, in
view of personal safety, especially that invol-
ving risk of injury and/or damage to equip-
ment, this alone is not sufficient. Until the in-
stalled monitoring devices reach full
effectivity, faulty drive movements, whose
magnitude depends on the controller type
and the operating condition, must be antici-
pated.