Datasheet

M8 AND M12 CONNECTORS FOR INDUSTRIAL APPLICATIONS | SICK8018656/2018-02-28
Subject to change without notice
GLOSSARY Annex
PP: ... Scr
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PP: Polypropylene
PP is a very high quality jacket material. It is very stable. SICK’s
exible PVC free polypropylene cables feature good resis-
tance to the highly eective cleaning agents used in the food
and beverage industry. In addition, these cables are highly
resistant to microbes and chemicals and are suitable for drag
chains. This makes them suitable for the food and beverage
industry, and since they are also resistant to lactic acid, they
are also ideal for dairies etc. Cables like these are also used
in packaging and bottling plants and in industrial mechanical
engineering and construction.
PUR: Polyurethane
PUR cables are characterized by particularly high tensile
strength, crack resistance, notch resistance, and wear resis-
tance. They are also are suitable for drag chains and have high
exural fatigue strength. SICK’s PUR cables are silicone and
halogen free and suitable for drag chains. Their outer jacket
is made of PUR and their conductor insulation out of polypro-
pylene, which makes them very resistant to wear. They meet
the requirements of VDE0472 for oil resistance and ame re-
sistance. Other features of these cables: PVC free, PWIS free,
and resistant to hydrolysis and microbes. These characteris-
tics make PUR cables very good for exible use in robotics,
machine tools, and machining.
PVC: Polyvinyl chloride
While other thermoplastic plastics are mainly applied in the
form of ready-to-use molding compound using a spray process,
PVC is processed in powder form in an extruder. PVC is self
extinguishing even without ame protection; it has good me-
chanical stability; however, it is notch sensitive. Cables made
of pure PVC are suitable for moderate mechanical stress in
packaging machines and assembly and production lines. They
boast good resistance to acids and lyes, making them ideal for
use in the food and beverage industry. SICK’s PVC cables are
also self extinguishing, PWIS free, and silicone free; however,
they have little wear resistance and they are notch sensitive.
- Silicone free
Product travel path
A machine’s product travel path is the route a moving machine
part travels along from one end position to the other.
PWIS free
The term “PWIS free” means that something is free of paint
wetting impairment substances. These substances can be
present in silicones, materials containing uorine, and certain
oils and fats. Components such as cables that are used in the
automotive industry, especially in paint shops, must be PWIS
free.
R
Rated voltage
The rated voltage is greater than or equal to the nominal volt-
age and it species the maximum value of voltage in normal
operation.
Resistance to microbes and hydrolysis
Under very warm, humid climatic conditions, cables can be
damaged by microbes or hydrolysis. Especially microorganisms
that produce enzymes can cause severe damage to cables.
The rst visible sign of attack by microbes is discoloration.
Then surface cracks appear, which give the microbes the
opportunity to penetrate more deeply and cause complete
destruction of the material.
Hydrolysis involves irreversibly breaking down polyester
chains, which reduces the mechanical stability of materials.
To prevent such defects, SICK provides polyurethane and
polypropylene cables, which are more resistant to hydrolysis.
These materials are also resistant to microbes, which can be
measured by the saponication value.
Materials with a saponication value of up to 200 KOH/g are
considered resistant to microbes.
Robot cables
By contrast with cables for drag chains, robot cables can
withstand torsion stresses as well as bending stresses. In ma-
chines and plants sensor cables are increasingly being used
in energy chains, revolving and tilting tables, and industrial ro-
bots. SICK does not currently have these cables in its portfolio;
however it can supply them on request.
S
Screw connection
The screw connection is the standard for SICK M8 and M12
plug connectors. They can be used to assemble dierent
cables and cable qualities quickly and correctly.
Fig.: Screw connection