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● Before switching on, the equipment grounding conductor must have been
● Even for short measurements or tests, operation is only allowed with the
● Before accessing electrical parts with voltage potentials higher than 50 V,
● Observe the following aspects in the case of electrical components:
● Install the provided covers and safety devices for protection against contact
● Do not touch any electrical connection points of the components while
● Do not connect or disconnect live parts.
● Under certain conditions, electric drive systems can be operated at mains
● Secure built-in devices from penetrating foreign objects and water, as well
High housing voltage and high leakage current! Danger to life, risk of injury by
electric shock!
● Prior to switching on and commissioning, ground or connect the electric
● Connect the equipment grounding conductor of the electric drive and con-
● Establish an equipment grounding connection with a minimum cross sec-
Table 1: Minimum cross section of equipment grounding connection
Cross section of outer con-
ductor
1.5 mm2 (AWG 16)
2.5 mm2 (AWG 14)
4 mm2 (AWG 12)
6 mm2 (AWG 10)
10 mm2 (AWG 8)
16 mm2 (AWG 6)
25 mm2 (AWG 4)
35 mm2 (AWG 2)
50 mm2 (AWG 1/0)
R911404905, Edition 02
permanently connected to all electrical components in accordance with the
connection diagram.
equipment grounding conductor permanently connected to the specified
points of the components.
disconnect electrical components from the mains or from the voltge source.
Protect the electrical component against restart.
Prior to touching an electrical component, always wait for 30 minutes after
switching off power in order for live capacitors to discharge. Before begin-
ning to work, measure the electrical voltage of live parts to make sure that
the equipment is safe to touch.
prior to switch-on.
power is turned on.
protected by residual-current-operated circuit-breakers sensitive to universal
current (RCDs/RCMs).
as from direct contact, by providing an external housing, for example a con-
trol cabinet.
drive and control system components to the equipment grounding con-
ductor at the grounding points.
trol system components permanently to the main power supply at all times.
The leakage current is greater than 3.5 mA.
tion according to the table below. With an outer conductor cross section
smaller than 10 mm2 (8 AWG), the alternative connection of two equipment
grounding conductors is allowed, each having the same cross section as the
outer conductors.
Minimum cross section of equipment grounding conductor
1 equipment grounding con-
ductor
10 mm2 (AWG 8)
16 mm2 (AWG 6)
25 mm2 (AWG 4)
ctrlX SAFETY "SafeMotion"
Instructions with regard to specific dangers
Leakage current ≥ 3.5 mA
2 equipment grounding conduc-
15 / 302
tors
2 × 1.5 mm2 (AWG 16)
2 × 2.5 mm2 (AWG 14)
2 × 4 mm2 (AWG 12)
2 × 6 mm2 (AWG 10)
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Bosch Rexroth AG
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