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Concentric copper or aluminum shield
Steel armor
● To ensure that high-frequency currents are appropriately discharged, establish a contact
through the largest possible surface area at both ends. Establish a 360° contact of the cable
shielding on the motor housing and on the protective grounding bar of the converter. On
the motor end for example, this can be done using EMC screw joints at the cable entry
ports. On the converter end, you can use EMC-shielded clips, for example.
● In the overall system, set up a properly meshed grounding system with low impedance for
high-frequency currents.
● No potential difference between the motor, converter, and working machine.
– Use equipotential bonding cables between the terminal box and the‑ high-frequency
grounding point on the motor enclosure.
– Use a separate high-frequency equipotential bonding cable between the motor
enclosure and the protective grounding bar of the converter.
– Use a separate high-frequency equipotential bonding cable between the motor
enclosure and the driven machine.
● Use the common-mode filter (damping cores) at the converter output. The Siemens sales
representative is responsible for selection and dimensioning.
● Limit the rise in voltage by using output filters. Output filters dampen the harmonic content
in the output voltage.
● Use the motor reactors.
● Preferably use an IT line supply with an insulated neutral point.
Note
Converter documentation
The operating instructions for the converter are not part of this documentation. Refer also
to the configuration/engineering information for the converter.
4.13.3
Insulated bearings when operating the converter
If the machine is operated from a low-voltage converter, insulated bearings are fitted at the
NDE and an insulated encoder with insulated bearings (option).
Comply with the plates on the machine relating to bearing insulation and possible bridges.
Preparations for use
4.13 Converter operation
SIMOTICS HT Series HT-direct 1FW4...1......A
42
Operating Instructions 11/2018
Содержание SIMOTICS HT Series
Страница 2: ...13 11 2018 16 25 V5 00 ...
Страница 10: ...Table of contents SIMOTICS HT Series HT direct 1FW4 1 A 10 Operating Instructions 11 2018 ...
Страница 26: ...Description SIMOTICS HT Series HT direct 1FW4 1 A 26 Operating Instructions 11 2018 ...
Страница 62: ...Assembly 5 6 Insulated bearings SIMOTICS HT Series HT direct 1FW4 1 A 62 Operating Instructions 11 2018 ...
Страница 108: ...Maintenance 9 2 Corrective Maintenance SIMOTICS HT Series HT direct 1FW4 1 A 108 Operating Instructions 11 2018 ...
Страница 116: ...Disposal 11 7 Disposal of components SIMOTICS HT Series HT direct 1FW4 1 A 116 Operating Instructions 11 2018 ...
Страница 118: ...Service and Support SIMOTICS HT Series HT direct 1FW4 1 A 118 Operating Instructions 11 2018 ...
Страница 122: ...Quality documents SIMOTICS HT Series HT direct 1FW4 1 A 122 Operating Instructions 11 2018 ...
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