Siemens 1LA8, Operating Instructions Manual

Page: 61 / 174

Electrical connection
6
When carrying out any work on the machine, observe the general safety instructions
(Page 15) and the specifications contained in EN 50110‑1 regarding safe operation on
electrical equipment.
Note
Service Center
If you require support when electrically connecting up the machine, please contact the Service
Center (Page 143).
6.1 Safety instructions relating to the electrical connection
WARNING
Connected parts can loosen
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elements can work loosely, so that the minimum air clearances are no longer maintained.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 indirectly to material failure of the system.
● Tighten the screwed connections to the specified tightening torques.
● Observe any specifications regarding the materials from which fixing elements must be
made.
● When performing servicing, check the fastenings.
See also
Tightening torques for screw and bolt connections (Page 145)
6.2 Terminal box
Depending on the version, different terminal boxes may be installed on the machine.
Depending on the terminal box, different cable entries and options for the cable connection
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014
61