User Manual
Section 3
GFK-2958L
May 2021
Configuration
27
3.2.1
Calculation of Space Requirements
The space requirements for a RSTi-EP station with n modules (horizontal installation) is
calculated as follows:
Height:
120 mm (4.72 in)
+ 40 mm (2 x 1.57 in)
= 200 mm (7.87 in)
clearance at top and bottom
Width:
8 mm (1.57 in)
+ 52 mm (2.05 in)
+ n x 11.5 mm (0.45 in)
+ 11.5 mm (0.45 in)
+ 2 x 20 mm (0.79 in)
= 111.5 mm (4.39 in) + n x 11.5 mm (0.45 in)
end bracket
network adapter
n modules
end plate and end bracket
distances to the sides
For vertical installation interchange height and width. When calculating the width, 4.5 mm
(0.18 in) for the must be added for the end bracket.
3.3
Use in a Potentially Explosive Atmosphere
If the RSTi-EP is used in a potentially explosive atmosphere rated as Zone 2, the housing
must meet the requirements of explosion protection type Ex n or Ex e and protection class
IP54. Sensors and actuators that are in Zone 2 or in a safe zone can be connected. All cable
glands on the housing must be approved for Ex e.
Figure 15: Use in a Potentially Explosive Atmosphere
