Connect Metal Shield In The Terminal Box; Connection Without Terminal Box - Siemens SIMOTICS FD 1MQ1 Operating And Installation Instructions

Electrical connection
6.4 Preparation
● Check that the maximum permissible clamping thickness of 10 mm for the cable lug or strap
● Fasten the clamping screw according to the following table. Screw-in depth and tightening
See also
Converter operation (Page 94)
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
● In terminal boxes without internal grounding part, connect the metal shield to one of the
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.
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
78
is not exceeded.
torque are different depending on whether cable lugs or ground terminals are used.
When using cable lugs
When using grounding
terminals
grounding point.
green-yellow grounding terminals.
WARNING
plate and is suitable for the respective use.
Screw Screw-in depth
M6
M8
M12 x 25
M16 x 35
M6
M8
M10
M12
M16
Tightening torque
> 6 mm
> 8 mm
> 16 mm
> 20 mm
> 9 mm
> 12 mm
> 15 mm
> 18 mm
> 20 mm
SIMOTICS FD 1MQ1
Operating Instructions 01/2019
8 Nm
20 Nm
38 Nm
92 Nm
8 Nm
20 Nm
40 Nm
70 Nm
170 Nm