Siemens SIMOTICS FD 1MM1 Series, Operating And Installation Instructions

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● Check that the maximum permissible clamping thickness of 10 mm for the cable lug or strap
is not exceeded.
● Fasten the clamping screw according to the following table. Screw-in depth and tightening
torque are different depending on whether cable lugs or ground terminals are used.
Screw Screw-in depth Tightening torque
When using cable lugs M6 > 6 mm 8 Nm
M8 > 8 mm 20 Nm
M12 x 25 > 16 mm 38 Nm
M16 x 35 > 20 mm 92 Nm
When using grounding
terminals
M6 > 9 mm 8 Nm
M8 > 12 mm 20 Nm
M10 > 15 mm 40 Nm
M12 > 18 mm 70 Nm
M16 > 20 mm 170 Nm
See also
Converter operation (Page 96)
6.4.4 Connect metal shield in the terminal box
If you are using metal-armored cables that are inserted into the terminal or auxiliary terminal
boxes with non-intrinsically safe circuits, then ground the metal shield in the terminal box.
Additional grounding points are permissible.
● In terminal boxes with internal grounding part, connect the metal shield to the internal
grounding point.
● In terminal boxes without internal grounding part, connect the metal shield to one of the
green-yellow grounding terminals.
6.4.5 Connection without terminal box
If the machine was ordered without terminal box (where the cables are simply brought out of the
motor), then the proper connection must be made in an external terminal box.
WARNING
Incorrect dimensioning
Faults can occur if the appropriate technical data is not complied with when connecting up. For
instance, degree of protection, minimum air and creepage distances. These faults can result
in eventual or immediate death, serious injury or material damage.
● Ensure that the external terminal box is dimensioned according to the data on the rating
plate and is suitable for the respective use.
Electrical connection
6.4 Preparation
SIMOTICS FD 1MM1
80
Operating Instructions 02/2019