Electrical Connection; Safety Instructions Relating To The Electrical Connection - Siemens SIMOTICS XP 1MB5 Operating Instructions Manual

Electrical connection

6.1

Safety instructions relating to the electrical connection

Comply with the following when carrying out any work on the machine:
• Comply with the general safety instructions (Page 17).
• Comply with the applicable national and sector-specific regulations.
• When using the motor within the European Union, comply with the specifications laid down
in EN 50110‑1 regarding safe operation of electrical equipment.
Risk of explosion by fixing elements becoming loose
If you use fixing elements made from the wrong material or apply the wrong tightening torque,
this could impair current transfer or cause connecting parts to become loose. Fastening
elements can work loosely, so that the minimum air clearances are no longer maintained.
Sparking formation may occur, in an explosive atmosphere it can lead to an explosion. This could
result in death, serious injury or material damage to the machine or even in failure, which could
in turn lead to indirect material damage of the plant or system.
• Tighten the screwed connections to the specified tightening torques.
• Only use the fixing accessories provided or only the original spare parts from Siemens.
• Always carefully check the fastenings when carrying out service work.
Hazardous voltages on electrical connections
Dangerous voltages can arise on electric motors. Death, injury or material damage can occur.
Observe the following safety information before connecting up the motor:
• Only qualified personnel should carry out work.
• Carefully follow the 5 safety rules (Page 17).
• Disconnect the machine from the power supply and take measures to prevent it being
reconnected. This also applies to auxiliary circuits.
• Check that the machine really is in a no-voltage condition.
• Ensure that there is a safe and reliable protective conductor connection before starting any
work.
• If the incoming power supply system displays any deviations from the rated values in terms
of voltage, frequency, curve form or symmetry, such deviations will increase the temperature
and influence electromagnetic compatibility.
• 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, IEC/EN 60034-1).
1MB5 shaft height 400/450
Operating Instructions, 04/2023, A5E52802354A
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