Emerson PACSystems RSTi-EP User Manual page 32

User Manual
GFK-2958J
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WARNING
• EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS I, DIVISION 2.
• WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE REPLACING OR
WIRING MODULES; AND
• DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.
2.3.1.1 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.
2.3.1.2 ATEX & IECEx Marking
II 3 G Ex nA IIC T4 Gc, DEMKO 16 ATEX 1591X
Ex nA IIC T4 Gc, IECEx ULD 16.0022X
Ta: -20 °C to +60 °C
Safety
Since relays are subject to wear, it must be ensured, by appropriate
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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.
Resistive Loads Only
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For EP-2714 and EP-2814 Relay Modules:
Transient protection shall be provided that is set at a level not exceeding 140%
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of the peak rated voltage value at the supply terminals to the equipment.
A visual inspection of the RSTi-EP station is to be performed once per year.
If mounted in other directions than horizontal (reference mounting rail), restrictions
to the max. operating temperature, max. output currents may apply.
While explosive atmosphere is present:
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.
Refer manufacturers manual.
Chapter 2
Oct 2019
17