Connection
6.2 Connecting auxiliary circuits
WOGeneric TEAAC / 2008
32 Siemens AG Operating Instructions 1.03 1RQ671...-Z
Equipotential bonding between terminal box and machine housing
The equipotential bonding between the PE terminals in the relevant terminal box enclosure
and the motor housing is established via a fixing bolt on each terminal box housing. The
contact point underneath the bolt head is bare metal and protected against corrosion.
[ID 24.03]
6.2.2 Final steps
1. Before closing the terminal box, please check that:
– The cables are connected in accordance with the terminal diagram inside the terminal
box cover
– The inside of the terminal box is clean and free of any cable residue
– The cable glands are firmly tightened, are suitable with respect to the degree of
protection, type of cable routing, permissible cable diameter, etc., and have been
mounted in full compliance with specifications and regulations
– The connecting cables are arranged so that they do not come into contact with the
machine, and the cable insulation cannot be damaged
– The threads in the terminal plate are sealed using cable entries or sealing plugs that
are suitable for the applicable degree of protection.
– If necessary, any cable entries that are not in use are sealed and the plugs are tightly
screwed in (i.e., so that they can only be removed using the suitable tools)
– All of the seals/gaskets and sealing surfaces of the terminal box are in good condition
– If bolt terminals are being used, all of the terminal bolts have been firmly tightened.
This also applies to any unused terminals
2. Close the terminal box. [ID 1195.00x]
See also
Tightening torques for screw and bolt connections (Page 56)
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