REXROTH RD 500 Series, Applications Manual

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RD 500 RD51 Electrical Installation of Converter
4-3
DOK-RD500*RD51*******-IB04-EN-P
CAUTION
Damage to the devices as a result of an
incorrect supply voltage!
⇒
RD 500 devices are designed for various supply
voltages! This is the reason why supply voltages are
not specified in the drawings and tables for the
terminal strips.
⇒
When connecting the converter, always observe the
rating plate and the line supply voltage specified in
Technical data.
Information on protective grounding: The cross-section of the
protective conductor to the cabinet must be at least 10mm²
(AWG 6) Cu, or a second protective conductor must be routed
in parallel in accordance with DIN VDE 0160. This is due to
the discharge currents of the drive units (>3.5 mA) through the
protective conductor (PE) (VDE 0160, Section 6.5.2). The
discharge currents of the drive converter can be up to 100 mA.
For higher connected powers, the minimum cross-section of
the protective conductor must be in an appropriate ratio to the
cross-section of the main phase conductor. Refer to DIN VDE
0160-5.5.3.4.2, Fig. 8.
A current-operated earth-leakage circuit breaker may not be
used as a protective measure.
4.3 Cable Cross-Sections
The cable cross-sections refer to the rated converter current.
The associated protective conductor cross-section must be a minimum of
10 mm
2
(AWG 6) (if power cables with cable cross-sections >10 mm
2
(AWG 6) are used, the protective conductor must have the same cross-
section).
The following is assumed for the line supply feeder cables / DC link
cables:
The cross-sections are valid for one phase for multi-stranded conductors,
and were defined in accordance with VDE0298.
Up to 35 mm² (AWG 2), individual wires in a cable duct.
Above 50 mm² (AWG 1/0), freely routed in the cabinet without any contact
to other cables
The following is assumed for motor feeder cables:
The cross-sections are valid for shielded 4-core cables and were defined
in accordance with VDE0298.
Up to 35 mm² (AWG 2),, routed in the cable duct, without any cable
bundling.
Above 50 mm² (AWG 1/0), freely routed in the cabinet without any contact
to other cables.
Note: The provided cable cross-section in mm² is based on the
assumption that PVC 70° C cables are used.
The provided cable cross-section in AWG is based on the
assumption that THHN or THHW 90 °C (194 °F) cables are
used.