Siemens SIMOTICS XP 1LA5 - Terminal Boxes, End Shields, Grounding Conductors, Sheet Metal Fan Covers

Electrical connection
Explosion-protected machines
114 56100000002002, 01/2016
You should refer to the table in order to find the correct tightening torque for any
metal and plastic cable glands that are to be mounted directly on the machine, as
well as for any other screw-type connections (such as adapters).
Table 6-4 Tightening torques for cable glands
Metal
± 10%
[Nm]
Plastic
± 10%
[Nm]
Clamping range [mm]
O ring
Cord
dia.
[mm]
Standard
-30 °C ... 100 °C
Ex
-30 °C ... 90 °C
Ex
-60 °C ... 90 °C
M 12 x 1.5
8
1.5
3.0 ... 7.0
-
2
M 16 x 1.5
10 2 4.5 ... 10.0 6.0 ... 10.0
M 20 x 1.5
12 4
7.0 ... 13.0
6.0 ... 12.0
M 25 x 1.5
9.0 ... 17.0 10.0 ... 16.0
M 32 x 1.5
18
6
11.0 ... 21.0
13.0 ... 20.0
M 40 x 1.5
19.0 ... 28.0
20.0 ... 26.0
M 50 x 1.5
20
26.0 ... 35.0
25.0 ... 31.0
M 63 x 1.5
34.0 ... 45.0
-
6.2.3 Terminal boxes, end shields, grounding conductors,
sheet metal fan covers
If no other tightening torques are specified, then the values in the following table
apply.
Table 6-5 Tightening torques for screws on the terminal box, end shields, screw-
type grounding conductor connections
Thread ∅
M
3.5
M 4
M 5
M 6
M 8
M 10
M 12
M 16
M20
N
m
min
0.8
2
3.5
6
16
28
46
110
225
max
1.2
3
5
9
24
42
70
165
340
Note
Tightening torque for the condensation drain plug
Tighten
the condensation drain plug M6x0.75 with a torque between 1.5 and 2.0 Nm!