Protection Against Electric Shock By Protective Low Voltage (Pelv) - Bosch Rexroth EFC 3600 Operating Instructions Manual
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DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
2.7
Protection Against Electric Shock by Protective Low Volt‐
age (PELV)
WARNING
● To all connections and terminals with voltages between 0 and 50 V, only devices,
electrical components, and conductors may be connected which are equipped with a
PELV (Protective Extra-Low Voltage) system.
● Connect only voltages and circuits which are safely isolated from dangerous voltag‐
es. Safe isolation is achieved for example by isolating transformers, safe optocou‐
plers or battery operation without mains connection.
2.8
Protection Against Dangerous Movements
Dangerous movements can be caused by faulty control of 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 opera‐
tion in the connected drives. Regarding personal safety, especially the danger of bodily
harm 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 de‐
pends upon the type of control and the state of operation.
DANGER
● For the above reasons, ensure personal safety by means of qualified and tested
higher-level monitoring devices or measures integrated in the installation. They have
to be provided for by the user according to the specific conditions within the installa‐
tion and a hazard and fault analysis. The safety regulations applicable for the instal‐
Safety Instructions for Electric Drives and Controls
High electric voltage by incorrect connection! Risk
of death or bodily injury by electric shock!
Dangerous movements! Danger to life, risk of injury,
severe bodily harm or material damage!
Bosch Rexroth AG
15/235
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