Operating Instructions OIO 14en Edition 07/2017 53
Tightening torques
Appendix
Connecting the extension cable
Normally the line length does not influence the functional efficiency of the sensors. However, the
manufacturer recommends not extending the connection cable of the junction box beyond a maximum
length of 100 m. Extension cable as well as cable plug and cable box are available as accessories from
the manufacturer.
1. Solder cable plug to the sensor cable.
2. Solder cable box to the extension cable
3. Connect sensor cable and extension cable.
4. Connect extension cable in accordance with the connection circuit diagram.
Tightening torques
Tab. 2 Tightening torques
Extension cable
□ Length max. [m] 100
□ Cable diameter max. [mm] 9.5
□ Wire cross-section
min. – max.
[mm
2
]
[mm
2
]
0.25 – 2.5 single-strand
0.25 – 1.5 multi-strand
Pay attention to the following when connecting the extension cable:
► Use only a shielded cable.
► Lay the cable separately from the supply lines, see "Safety instructions for electrical installation",
page 30.
Tightening torque [Nm] for screws with metric threads + head contact surfaces With thread measured
in inches
Thread
+ wedge lock
washers
Stainless steel
screws A2 and A4
Screw plugs with
elastomer seal
5.6
8.8 10.9
8.8 +
Alu*
8.8
Rust-
proof
A4-70
Property
class 70
Property
class 80
Thread
Galvanized
+
stainless
steel
M 3 0.6 1.5 – 1.2 1.5 1.1 – – G 1/8" 13
M 4 1.4 2.9 4.1 2.3 3 2 – – G 1/4" 30
M 5 2.7 6.0 8.0 4.8 6.0 3.9 3.5 4.7 G 3/8" 60
M 6 4.7 9.5 14 7.6 10.3 6.9 6 8 G 1/2" 80
M 8 11.3 23.1 34 18.4 25 17 16 22 G 3/4" 120
M 10 23 46 68 36.8 47 33 32 43 G 1" 200
M 12 39 80 117 64 84 56 56 75 G 1 1/4" 400
M 14 62 127 186 101 133 89 – – G 1 1/2" 450
M 16 96 194 285 155 204 136 135 180
* Reduced tightening
torque when screwing
into aluminum
M 18 133 280 390 224 284 191 – –
M 20 187 392 558 313 399 267 280 370
M 24 322 675 960 540 687 460 455 605
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