Specifications

• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
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1. Commissioning INDRAMAT AC Main Spindle Drives
1.5 Main Spindle Drives with RAC Controllers
1.5.1 Mains Requirements
Before switching on each time, check that the following mains requirements
are met:
• For 380V type: (type code field „AC supply voltage“=380)
3 x 400V +6% -15% 50 to 60 Hz
• For 460V type: (type code field „AC supply voltage“ = 460)
3 x 400V ±15%, 50 Hz or3 x 460V ±10%, 60 Hz
• mains-related earth
3 x 380V...460V ±10% 50 to 60 Hz
• mains-related earth
A transformer is not needed if the mains supply meets these conditions.
In the case of three-phase supplies with mains-related earth, conductor
but with phase-phase voltages other than those stated above, an
autotransformer must be used for voltage matching.
With three-phase supplies without mains-related conductor but with
phase-phase voltages meeting the above requirements, no isolating
transformer is necessary if the mains meets special conditions and the
RAC is protected by overvoltage protection devices (see "Electrical
Connections").
With three-phase supplies without mains-related earth conductor and
different mains voltages, a three-phase isolating transformer, with a
secondary voltage as stated above and a short-circuit voltage not
exceeding 4%, must be used. The neutral point of the secondary must
be connected to the system earth (see "Electrical Connections").
1.5.2 Checks with the Equipment Switched-Off
Compare the data on the equipment rating plates with the existing supply
voltage.
The details on the AS programming module must match the ratings of the
installed drive components, otherwise there is the risk of damage.
If a KDA 34.2 is to be operated with an RAC 2.2, then the KDA must be
designed for a supply voltage of 500 V (type code field "DC supply
voltage" = 500).
Check the wiring for short-circuits, breaks, incorrect connections,
conductor cross sections and compare with the Indramat connection
diagram.
• Earthing arrangements:
The earthing arrangements should be made as per the respective
Indramat connection diagrams. These should also include the rele-
vant protective measures for the machine. The earth connection
provides an operational earth with a protective function.
For RAC 2.2 and RAC 4.1
For RAC 3.1
Other mains supplies
Checking the installed drive
components
Condition of wiring