Hardware Planning and Assembly
SIWAREX FTA
Certificate: c-UL-us haz. loc.
UL file number. USA: NRAG.E239877
UL file number Canada: NRAG7.E239877
Note to c-UL-us haz.loc:
Warning – Explosion Hazard – Do not disconnect while circuit is live unless area is
known to be non-hazardous.
Warning – Explosion Hazard – Substitution of components may impair suitability
for Class I, Division 2.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-
hazardous locations only.
Connection from load cells to SIWAREX FTA:
The SIWAREX FTA can be connected with load cells in zone 1 or zone 2.
For a connection of load cells in zone 2 it is sufficient, that the load cells also have
an approval for zone 2 and all associated directives as well as the installation
instructions are respected.
For a connection of load cells in zone 1, load cells with the adequate approvals are
needed and appropriate provisions according to the guidelines must ensure
explosion protected operation. For example SIWAREX R load cells can be
connected intrinsically safe via the Ex-Interface SIWAREX IS. The instructions for
the Ex-Interface, the load cells and the ATEX as well as the c-UL-CSA directives
have to be respected.
Installation and Maintenance:
Required connection and installation work must be performed by qualified
personnel.
Repairs can only be carried out at the production location.
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