For electrical drive and filter components with voltages of more than
50 volts, observe the following additional safety instructions.
DANGER
High housing voltage and high leakage current! Risk of death or bodily
injury by electric shock!
●
Before switching on, the housings of all electrical equipment and motors
must be connected or grounded with the equipment grounding conductor
to the grounding points. This is also applicable before short tests.
●
The equipment grounding conductor of the electrical equipment and the
devices must be non-detachably and permanently connected to the power
supply unit at all times. The leakage current is greater than 3.5 mA.
●
Over the total length, use copper wire of a cross section of a minimum of
10 mm
2
for this equipment grounding connection!
●
Before commissioning, also in trial runs, always attach the equipment
grounding conductor or connect to the ground wire. Otherwise, high vol‐
tages may occur at the housing causing electric shock.
3.2.2
Protection Against Electric Shock by Protective Extra-Low Voltage
Protective extra-low voltage is used to allow connecting devices with basic in‐
sulation to extra-low voltage circuits.
All connections and terminals with voltages between 5 and 50 volts at Rexroth
products are PELV systems. 1) It is therefore allowed to connect devices
equipped with basic insulation (such as programming devices, PCs, notebooks,
display units) to these connections and terminals.
WARNING
High electric voltage by incorrect connection! Risk of death or bodily
injury by electric shock!
If extra-low voltage circuits of devices containing voltages and circuits of more
than 50 volts (e.g. the mains connection) are connected to Rexroth products,
the connected extra-low voltage circuits must comply with the requirements for
PELV. 2)
3.2.3
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.
1)
"Protective Extra-Low Voltage"
2)
"Protective Extra-Low Voltage"
Project Planning Manual | Rexroth IndraControl VDP 92.3
Electric Drives
and Controls
| Bosch Rexroth AG
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Safety Instructions for Electric Drives and Controls
