User Manual
Section 2
GFK-2958L
May 2021
Safety
20
2.1.5
Shielding
Shielded lines are to be connected with shielded plugs and fixed on a shield bus in
compliance with the relevant standard (refer to Section 7, Earthing and Shielding).
2.1.6
Overcurrent
Potentials of network adapters and power-feed modules must be disconnected either
simultaneously or in the order 24 V supply first, then the GND potential.
2.2
Intended Use
The products of the RSTi-EP series are intended for use in industrial automation. A RSTi-EP
station with network adapter and connected modules is intended for the decentralized
control of systems or sub-systems. Via the network adapter every module of a station is
integrated into a fieldbus structure and connected to the primary control unit. The RSTi-EP
products conform to protection class IP 20 (in accordance with DIN EN 60529), they can be
used in potentially explosive atmospheres rated as Zone 2 (as per Directive 2014/34/EU)
and in safe zones.
The observance of the supplied documentation is part of the intended use. The products
described in this manual may only be used for the intended applications and only in
connection with certified third-party devices or components.
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, 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 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 follow the actual measured temperature values.
•
A stabilized 24Vdc power supply with double or reinforced insulation shall be used.