User's Manual

Fieldgate FXA320, FXA520
14 Endress + Hauser
Operating conditions: Environment
Mounting location Cabinet or protective housing
Permitted ambient
temperatures
For individual mounting
-20 C... +60 C
For series mounting without lateral spacing
-20 C... +50 C
Storage temperature
-25 C... +85 C (preferably at +20 C)
Installation in protective housing
-20 C... +40 C
Maximum two Fieldgates can be installed into a protective housing.
Caution!
The devices must be mounted such that they are protected from the weather and from impacts, and where
possible in places that are not exposed to direct sunlight. This must be especially observed in regions with warm
climates.
Climatic and
mechanic
application class
3K3
In accordance with DIN EN 60721-3-3
3M2
In accordance with DIN EN 60721-3-3
Ingress protection IP 20, in accordance with EN 60529
Electromagnetic
compatibility (EMC)
Interference Emission to EN 61326, Electrical Equipment Class B.
Application in protection
functions
The FXA 520 can be attached back effect freely to protection functions that are classified in SIL 2 to IEC 61508.
SFF
1
1) SFF = Safe Failure Fraction
60%
TI
1
1) TI = Test Interval between life testing of the protection function (in years)
PFD
avg
2
2) PFD
avg
= Probability (average) of a dangerous Failure on Demand
1 year 1,23 x 10
-6
5 years 6,13 x 10
-6
10 years 1,23 x 10
-5