Siemens SIMOTICS FD 1LH1, Operating Instructions & Installation Instructions, Page: 81 / 174

13.Remove the threaded bars and screw in the two other screws.
14.Tighten all screws (4 x M10, tightening torque 40 Nm).
Rotating a terminal box with removed stator cables
1. Ensure that the motor is disconnected from the power supply.
2. Release two diagonally opposed screws for the cover, and secure the cover using two M10
threaded bars screwed in diagonally opposing one another. Release the two other screws
and lift the cover off the terminal box. The terminal box cover is very heavy. Especially when
in a lateral position, ensure that the terminal box does not fall down.
3. If the motor is already connected:
– Remove the cables of the power supply.
– Release the screw connection of the cable entry. Remove the cables through the
opening.
4. Release the screwed connections of the internal stator cables, optionally also those at the
neutral point.
5. Remove the grounding straps on two sides of the terminal box lower section.
6. Remove the screwed joints of the lower section with the console or optionally the cable duct.
7. Screw in two eye-bolts diagonally in the M10 thread at the corners. Slightly raise the terminal
box housing using a crane.
8. Rotate the terminal box through ±90° in the desired direction. Carefully place the terminal
box down. Take care not to damage the seal.
9. Screw the terminal box with the console / cable duct (4 x M16, tightening torque 170 Nm).
10.Fasten the grounding straps to the terminal box lower section and the console or cable duct:
– After rotation, remove the plugs of the two nearest M8 threads on the console or cable
duct.
– Grind the surface at the drilled holes so that the grounding straps have metallic contact.
– Then fasten the two straps to the terminal box lower section and the console or cable
duct (4x M8, tightening torque 11 Nm).
– Protect the bare areas at the contact with corrosion protection.
11.Connect the cables in accordance with the circuit diagram on the inside of the cover (M12,
tightening torque 20 Nm). Ensure that the minimum air clearances are observed. More
information:
Minimum air clearances (Page 93)
12.Reconnect the power supply cables. More information:
– Connecting the grounding conductor (Page 83)
– Introducing and routing the cables ...
– Connecting cables ...
13.Screw in the two diagonally arranged threaded bars and slide the cover onto these bars.
Take care not to damage the seal.
Electrical connection
6.3 Terminal box
SIMOTICS FD 1LH1
Operating Instructions 01/2019
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