Siemens SIMOTICS FD 1LH1, Operating Instructions & Installation Instructions

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9. Tighten the clamping screws of the strain relief device so that the cable is clamped as
necessary, but do not damage the cable insulation. We recommend a torque of 5 Nm.
10.Retighten the clamping screws after 24 hours.
WARNING
Damage to insulation
If you tighten the strain relief clip clamping screws too tightly this can damage the
insulation. Damaged insulation can result in arcing. This can result in death, serious injury
or material damage.
Tighten the strain relief clip clamping screws to the specified torque.
6.5.3 Bringing cables into the terminal box 1XB... with cable gland
The connection cables are inserted into the terminal box via an exchangeable cable entry plate
or cable entry support. The cable entry plate is drilled by default. The cable glands are not
included in the standard scope of supply.
You can rotate the cable entry through 180°.
Table 6-3 Cable entry plate versions
Terminal box Standard
Cable entry plate with boreholes Explosion protected version / op‐
tion L01
1XB1621 2 x M80 x 2 + 2 x M25 x 1.5
Undrilled
1XB1631 4 x M80 x 2 + 2 x M25 x 1.5
1XB7730 1 x M72 x 2 + 3 x M25 x 1.5
1XB7731 2 x M72 x 2 + 3 x M25 x 1.5
1XB7740 4 x M80 x 2 + 3 x M25 x 1.5
1XB7750 8 x M72 x 2 + 3 x M25 x 1.5
Insert the cable into the terminal box
Proceed as follows when introducing cables into the terminal box:
1. Unscrew the cable entry plate.
2. Drill the required number of holes or threads in the required size in the cable entry plate.
Ensure that the cable entry plate can be assembled after drilling and that it features
sufficient stiffness.
3. Fit the required cable glands.
4. Route the cables through the cable glands.
5. Fit the cable entry plate to the terminal box with the assembled cables.
6. Connect the ends of the cables to the terminals in accordance with the circuit diagram. The
circuit diagram is located in the cover of the terminal box.
Electrical connection
6.5 Inserting and routing the cables
SIMOTICS FD 1LH1
88
Operating Instructions 01/2019