Electrical Connection; Connecting The Machine; General - Siemens SIMOTICS SD Operating Instructions Manual

Electrical connection

6.1

Connecting the machine

6.1.1

General

Hazardous voltages
Death, injury or material damage can occur. Note the following safety information before
connecting-up the machine:
• Only qualified and trained personnel should carry out work on the machine while it is
• Disconnect the machine from the power supply and take measures to prevent it being
• Check that the machine really is in a no-voltage condition.
• Establish a safe protective conductor connection before starting any work.
• If the incoming power supply system displays any deviations from the rated values in
Hazardous voltages
Death, injury or material damage can occur. Operating the machine on a line supply system
with a non-grounded neutral point is only permitted over short time intervals that occur
rarely, e.g. the time leading to a fault being eliminated (ground fault of a cable, EN 60034-
1).
Observe the information in EN / IEC 60034-1 (VDE 0530-1) regarding operation at the limits
of the A zones (±5 % voltage difference and ±2 % frequency difference) and the B zones,
especially in respect of temperature increase and deviation of the operating data from the
rated data on the rating plate. Never exceed the specified limits!
Connect up so that a permanently safe electrical connection is guaranteed (no protruding
wire ends); use the assigned cable-end fittings (e.g. cable lugs, end sleeves).
Connect up the line supply voltage and arranged the disconnecting link in accordance with
the circuit diagram provided in the terminal box.
Select connecting cables according to DIN VDE 0100 taking into account the rated current
and the system-dependent conditions (e.g. ambient temperature, routing type etc. according
to DIN VDE 0298 or EN / IEC 60204-1).
Low-voltage motors
Operating Instructions, 05/2014, 5 610 00000 02 000
DANGER
stationary.
reconnected. This also applies to auxiliary circuits.
terms of voltage, frequency, curve form or symmetry, such deviations will increase the
temperature and influence electromagnetic compatibility.
DANGER
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