High housing voltage and high leakage
current! Danger to life, risk of injury by
electric shock!
WARNING
●
Before switching on and before commissioning, ground or connect the
components of the drive and control system to the equipment grounding
conductor at the grounding points.
●
Connect the equipment grounding conductor of the components of the
drive and control system permanently to the main power supply at all
times. The leakage current is greater than 3.5 mA.
●
Establish an equipment grounding connection with a copper wire of a
cross section of at least 10 mm
2
(AWG 8) or additionally run a second
equipment grounding conductor of the same cross section as the
original equipment grounding conductor.
2.4.2
Safety Extra-Low Voltage as Protection Against Electric Shock
Safety extra-low voltage (SELV) is used to allow connecting devices with
basic insulation to extra-low voltage circuits.
All connections and terminals with voltages between 5 and 50 volts at the
components of the Bosch Rexroth drive and control system are SELV
systems. It is allowed to connect devices equipped with basic insulation (such
as programming devices, PCs, notebooks, display units) to these
connections.
Danger to life, risk of injury by electric shock!
High electrical voltage by incorrect
connection!
WARNING
If extra-low voltage circuits of devices containing voltages and circuits of
more than 50 volts (for example, the mains connection) are connected to
Bosch Rexroth products, the connected extra-low voltage circuits must
comply with the requirements for SELV ("Safety Extra-Low Voltage").
●
Only connect equipment, electrical components and cables of the
protective low voltage type to all terminals and clamps with voltages of 0
to 50 Volts.
●
Only electrical circuits may be connected which have double or
reinforced isolation against high voltage circuits. Double or reinforced
isolation is achieved, for example, with an isolating transformer or when
battery-operated.
2.4.3
Protection against Dangerous Movements
Dangerous movements can be caused by faulty control of connected motors.
Some common examples are:
●
Improper or wrong wiring or cable connection
●
Operator errors
●
Wrong input of parameters before commissioning
●
Malfunction of sensors, encoders and monitoring devices
●
Defective components
NYCe 4000 Multi-axis motion control system Hardware Sys‐
tem Manual
13/233
Safety Instructions for Electric Drives and Controls
R911337671_Edition 18 Bosch Rexroth AG
