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Installation
Explosion risk - During assembly work, sparks can form and surfaces may
become excessively hot.
• Before assembly, make sure that there is not a potentially explosive
atmosphere.
• For applications in potentially explosive atmospheres, observe the
Warning
installation and construction requirements of EN 60079- 15 and/or
country-specific regulations.
Dangerous contact voltage:
• Carry out assembly and wiring work on the RSTi-EP station only when the
power supply is disconnected.
• Make sure that the place of installation (switch cabinet etc.) has been
Warning
disconnected from the power supply.
6.1 Preparations for Assembly
The RSTi-EP station is designed for installation in switch cabinets, terminals or switch boxes in
decentralised systems. The field-bus network adapter and I/O modules conform to protection class
IP20.
6.1.1 Environmental Conditions
Make sure that the permitted environmental conditions for installation and operation are observed
(refer to the General Technical Data in the sections, General Technical Data for the Fieldbus Network
Adapter and General Technical Data for I/O Modules).
6.1.2 DIN Rail
The RSTi-EP system products are intended for installation on a DIN rail in accordance with EN 60715
[35 × 7.5 mm (1.4" x 0.3")], steel strip in accordance with Annex A of EN 60715, or tinplated steel strip.
The DIN rail must be mounted prior to the installation of the RSTi-EP station.
The DIN rail must be attached to the surface at least every 20 cm (7.9 in) to protect it from vibration
and impact.
If the DIN rail is installed on earthed mounting plates, it does not have to be separately earthed.
6.1.3 Stripping Lengths
The required stripping length for every RSTi-EP product is specified in mm (in). These lengths, such as
6 mm (o.24 in) ± 0.5 mm (o.02 in), ≥ 10 mm (o.39 in) ±1 mm (0.04 in), must be observed. This also
applies to the use of wire-end ferrules. The external dimensions of the crimped wire-end ferrules
must conform with IEC‑60947-1. For detailed information refer to the section, Wiring.
GFK-2958E
RSTi-EP User Manual November 2017
313
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