Connecting The Machine; Terminal Box - Siemens SIMOTICS XP 1MB155 Operating Instructions Manual

Electrical connection

6.2 Connecting the machine

6.2 Connecting the machine
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
• Operating the machine on a line supply system with a non-grounded neutral point is only
6.2.1

Terminal box

Hazardous voltage
Electric motors have high voltages. When incorrectly handled, this can result in death or
severe injury.
Switch off the machine so that it is in a no-voltage condition before you open the terminal
box.
NOTICE
Damage to the terminal box
If you incorrectly carry out work on or in the terminal box, this can result in material
damage. You must observe the following to avoid damaging the terminal box:
• Ensure that the components inside the terminal box are not damaged.
• It must be ensured that there are no foreign bodies, dirt or moisture in the terminal box.
• Close the terminal box using the original seal so that it is dust tight and water tight.
• Use O-rings or suitable flat gaskets to seal entries in the terminal box (DIN 42925) and
• Please observe the tightening torques for cable entries and other screws.
66
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.
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).
DANGER
other open entries.
Operating Instructions, 03/2018, A5E41926185A
1MB155 / 1MB555