Bringing Cables Into The Auxiliary Terminal Box And Routing Them; Degree Of Protection Of The Auxiliary Terminal Box - Siemens SIMOTICS HV M Operating Instructions Manual

6.3.2

Bringing cables into the auxiliary terminal box and routing them

The type designations of the mounted auxiliary terminal boxes, their arrangement, and the
relevant connection terminals are documented in the "Technical data and drawings" section.
The information required to connect the auxiliary circuits is provided in the terminal diagram
located on the inside of the terminal box cover and in the "Technical specifications" section.
The connectable cable cross-sections and the dimensions can be found the "Information about
the machine dimension drawing ".
Adapting the cable glands
A plate is bolted to the terminal box enclosure via a rectangular cutout through which the
connecting cables enter. Normally, this plate is supplied without threaded holes for the cable
glands. This enables you to adapt the number and size of the cable glands to the rated
conditions.
Degree of protection
Use only cable glands that are suitable for the degree of protection of the auxiliary terminal
box.
Introducing and routing the cables
1. Open the auxiliary terminal box and undo the cable entry plate screws.
2. Drill the required number of holes or threads in the required size of the cable gland into the
3. Mark the cables if necessary for subsequent assignment.
4. Pull the cables through the cable glands and the entry plate, and connect the cables.
5. Fit the cable entry plate.
6. Make sure that the seal on the screwed sockets for the cable glands satisfies the degree
6.3.3

Degree of protection of the auxiliary terminal box

Normally the cable entry plate is supplied undrilled. In special versions the cable entry plate
can be supplied with tapped holes for connection of cable entries and conductor entries. This
requires derating of the IP degree of protection of the auxiliary terminal box.
1. Close the openings for operation, using suitable sealing elements such as sealing plugs,
SIMOTICS HV M 1RN76308PR900CG0-Z
Operating Instructions 07/2018
cable entry plate.
of protection.
threaded adapters, cable or conductor entries.
Electrical connection
6.3 Connecting the auxiliary circuits
67