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6.4.9
Finishing connection work
1. Before closing the terminal box, please check that:
2. Close the terminal box using the cover fixing screws, see Chapter Tightening torques for
6.5
Connecting the auxiliary circuits
The type designations of the mounted auxiliary terminal boxes, their arrangement, and the
relevant connection terminals are documented in the "Technical data" section. The information
required to connect anti-condensation heating and the auxiliary circuits is provided in the
connection diagram, located on the inside of the terminal box cover, and in the "Technical
data" section. The terminals are suitable for conductor cross-sections up to 4 mm
6.5.1
Selecting cables
Take the following criteria into account when selecting the connecting cables for the auxiliary
circuits:
● Rated current
● Rated voltage
● System-dependent conditions, such as ambient temperature, routing type, cable cross-
● Requirements according to IEC/EN 60204‑1
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018
– The electrical connections in the terminal box have been made in accordance with the
specifications above and tightened with the correct tightening torque.
Remove the used bolts and fastening elements.
– 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.
– Unused cable entries are closed and their plugs are tightly screwed in place, i.e. they
can only be released using a tool.
– The connecting cables are freely routed. The cable insulation cannot be damaged in
operation.
screw connections. (Page 119)
section as defined by required length of cable, etc.
Electrical connection
6.5 Connecting the auxiliary circuits
.
2
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