Connecting; Basic Safety Instructions - Siemens SIWAREX JB Operating Instructions Manual

Connecting

6.1

Basic safety instructions

Unsuitable cables, cable glands and/or plugs
Risk of explosion in hazardous areas.
• Use only cable glands/plugs that comply with the requirements for the relevant type of
• Tighten the cable glands in accordance with the torques specified in Technical data
• Close unused cable inlets for the electrical connections.
• When replacing cable glands, only use cable glands of the same type.
• After installation, check that the cables are seated firmly.
Lack of equipotential bonding
Risk of explosion through compensating currents or ignition currents through lack of
equipotential bonding.
• Ensure that the device is potentially equalized.
Exception: It may be permissible to omit connection of the equipotential bonding for devices
with type of protection "Intrinsic safety Ex i".
Improper laying of shielded cables
Risk of explosion through compensating currents between hazardous area and the
non‑hazardous area.
• Shielded cables that cross into hazardous areas should be grounded only at one end.
• If grounding is required at both ends, use an equipotential bonding conductor.
Mixing intrinsically safe and non-intrinsically safe circuits
Danger of explosion in hazardous areas.
• Connect either only intrinsically safe or only non-intrinsically safe circuits. Mixing is not
SIWAREX JB
Operating Instructions, 09/2022, A5E43011851-AD
WARNING
protection.
(Page 31).
WARNING
WARNING
WARNING
allowed.
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