Chapter2: Safety
GFK-2958E
RSTi-EP User Manual
22
2.3
Use in a Potentially Explosive Atmosphere
If RSTi-EP products are used in potentially explosive atmospheres, the following notes are
also
applicable:
•
Staff involved in assembly, installation and operation must be qualified to perform safe
work on electrical systems protected against potentially explosive atmospheres.
•
The remote I/O-System RSTi-EP shall only be used in an area of not more than pollution
degree 2, as defined in IEC 60664-1.
•
For applications in potentially explosive atmospheres, the requirements according to IEC
60079-15 must be observed, in particular the housing enclosing the system must meet
the requirements of explosion protection type Ex n or Ex e and protection class IP54. The
IP54 enclosure must be accessible only by the use of a tool.
•
Sensors and actuators that are located in Zone 2 or in a safe zone can be connected to
the RSTi-EP station.
•
The ambient temperature range -20°C to +60°C shall not be exceeded.
•
When the temperature under rated conditions exceeds 70 °C at the conductor or conduit
entry point, or 80 °C at the contact, the temperature specification of the selected cable
shall be in compliance with the actual measured temperature values.
•
A stabilized 24V DC power supply with double or reinforced insulation shall be used.
•
When using modules EP-2714, EP-2814, and EP-1804 in explosive atmosphere:
o
Device shall be installed in an environment free of condensation, corrosives and
conducting dusts.
o
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.
•
For EP-2714 (Relay Module) only:
o
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 milli-ohm will be considered as a fault.
o
Resistive Loads Only
•
For EP-2714 and EP-2814 Relay Modules:
o
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.
•
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:
o
No electrical connection shall be separated in energized condition.
o
The USB interface shall not be used.
o
Dip-switches, binary-switches and potentiometers shall not be actuated.
•
Only power supplies with secure isolation shall be used.
•
Refer manufacturers manual.
Summary of Contents for RSTi-EP
Page 1: ...RSTi EP User Manual GFK 2958E November 2017...
Page 23: ...Chapter 1 Introduction GFK 2958E RSTi EP User Manual 19 Notes...
Page 56: ...Chapter 3 Configuration GFK 2958E RSTi EP User Manual 52 Notes...
Page 183: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 179 EP 5111...
Page 184: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 180 EP 5111...
Page 316: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 312 Notes...
Page 330: ...Chapter 6 Installation GFK 2958E RSTi EP User Manual 326 Notes...
Page 344: ...Chapter 7 Earthing and Shielding GFK 2958E RSTi EP User Manual 340...
Page 345: ...Chapter 7 Earthing and Shielding GFK 2958E RSTi EP User Manual 341 Notes...
Page 385: ...Chapter 8 Web Server GFK 2958E RSTi EP User Manual 381 Notes...
Page 401: ...Chapter 11 Disassembly and Disposal GFK 2958E RSTi EP User Manual 397 Notes...
Page 413: ...Chapter 12 LED Indicators and Troubleshooting GFK 2958E RSTi EP User Manual 409 Notes...
Page 416: ...Chapter 14Accessories and Replacement Parts GFK 2958E RSTi EP User Manual 412 Notes...