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FW-E115-P-M_v0203_03_EN.docx
4.4 ELECTRICAL INSTALLATION
DO NOT OPEN AN INSTALLED ENCLOSURE WHEN CIRCUITS ARE ALIVE.
For battery supplied equipment:
DO NOT OPEN WHEN AN EXPLOSIVE GAS ATMOSPHERE IS PRESENT.
• Electro static discharge does inflict irreparable damage to electronics! Before installing or
opening the E115-P, the installer has to discharge himself by touching a well-grounded
object.
• The E115-P must be installed in accordance with the EMC guidelines (Electro Magnetic
Compatibility).
• When installed in a potentially explosive atmosphere that requires apparatus of
equipment protection level Gb and Db, the unit must be installed such that, even in the
event of rare incidents, an ignition source due to impact or friction sparks between the
enclosure and aluminum/steel is excluded.
• Do ground the aluminum / stainless steel enclosure properly with a PE wire as indicated
to the Protective Earth terminal.
• The installation must comply with national requirements (e.g. in Canada, the Canadian
Electrical Code, C22.1, Part 1 and in USA, the National Electrical Code, NFPA 70 and
ANSI/ISA-RP 12).
• Use Ex-d cable glands with effective IP67 (TYPE4X) seals for the cables used;
• For unused cable entries fit Ex-d blind plugs with effective IP67 (TYPE4X) seals;
• Make a reliable ground connection to the metal enclosure.;
• Use only an effective screened cable for the input signal, and grounding of its screen to terminal
S1 (GND) AND to the enclosure or at the sensor itself, whichever is appropriate to the
application. Be careful not to create ground loops!
• Without thermal separator, the process temperature shall not exceed the specified maximum
ambient temperature;
• When the enclosure temperature exceeds 70 °C / 158 °F, apply suitable cable and gland for this
temperature;
• The cable entry plugs mounted into the enclosure shall comply with the requirements of the type
of protection used.
• Make sure to apply proper internal and external grounding to PE terminals as indicated in below
figure by the arrows.
Use following wiring for PE terminal: Stranded conductor:4 mm², Single conductor: 6 mm².
Fig. 12: Grounding enclosure
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