User Manual Section 2
GFK-2958L May 2021
Safety 21
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When using modules EP-2714, EP-2814, and EP-1804 in explosive atmosphere:
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Device shall be installed in an environment free of condensation, corrosives and
conducting dusts.
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If the switching or input voltage exceeds 63V, a transient protection device
shall be provided that, limits the transients to a peak voltage of 500V or less.
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For EP-2714 (Relay Module) only:
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Since relays are subject to wear, it must be ensured, by appropriate
maintenance intervals, that the temperatures do not exceed the limits of
temperature class T4.
Note: A contact resistance of more than 110 mΩ will be considered as a fault.
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Resistive Loads Only
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For EP-2714 and EP-2814 Relay Modules:
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Transient protection shall be provided that is set at a level not exceeding 140%
of the peak rated voltage value at the supply terminals to the equipment.
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A visual inspection of the RSTi-EP station is to be performed once per year.
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If mounted in other directions than horizontal (reference mounting rail), restrictions to
the max. operating temperature, max. output currents may apply.
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While explosive atmosphere is present:
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No electrical connection shall be separated in energized condition.
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The USB interface shall not be used.
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Dip-switches, binary-switches and potentiometers shall not be actuated.
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Only power supplies with secure isolation shall be used.
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Refer manufacturers manual.
WARNING
EXPLOSION HAZARD - –UBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 2.
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WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE REPLACING OR
WIRING MODULES; AND
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DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.
2.3.1 ATEX Zone 2
The modules must be mounted in an enclosure certified in accordance with EN60079-15 for
use in Zone 2, Group IIC and rated IP54. The enclosure shall only be able to be opened with
the use of a tool.
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