Siemens SIMOTICS XP 1MB5 SH400, Operating Instructions Manual, Page: 84 / 166

6.7.8 Connection using saddle terminals
Lug terminal connections may be installed if ordered accordingly, which are suitable for
connecting flexible and stranded conductors without the use of wire end ferrules. If you wish to
use wire end ferrules, then before connecting the cable, attach these so as to form an
appropriate, current-carrying crimped joint at the end of the conductor.
WARNING
Danger of explosion if the conductor ends become too hot
If the end of the conductor is not correctly enclosed by the wire end ferrule, but is trapped by
it, this can lead to overheating. The temperature class of the machine can be exceeded. This
can trigger ignition of an explosive mixture. This can result in death, serious injury or material
damage.
● Insert only one conductor end into each wire end ferrule. Attach the wire end ferrule
correctly.
● Insert only one conductor end into each terminal.
6.8 Finishing connection work
1. Before closing the terminal box, please check that:
– The electrical connections in the terminal box have been made in accordance with the
specifications above and tightened with the correct tightening torque.
– The machine is connected in such a way that it rotates in the direction specified.
– The inside of the terminal box is clean and free of any cable debris, dirt and foreign
bodies.
– All of the seals and sealing surfaces of the terminal box are intact and in a good condition.
– Any unused cable entries are sealed with glued-in ferrous or certified sealing elements.
The sealing elements can only be removed with a tool.
– The connecting cables are laid in an open arrangement, so that the cable insulation
cannot be damaged during operation.
2. Close the terminal box with the cover fixing screws, see chapter Technical data (Page 155).
The tightening torques for the screw connections of the terminal box and grounding conductor
are in Table (Page 155) under case C.
Electrical connection
6.8 Finishing connection work
1MB5 SH 400/450
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Operating Instructions, 05/2019, A5E45959221A