Operating Instructions
english
16
Digital Output Loop Powered Type 9176
installations therefore have a particular responsibility. The precondition for this is an
accurate knowledge of the applicable regulations and provisions.
When installing and operating the device, the following are to be observed:
•
The national installation and assembly regulations (e.g. IEC/EN 60079-14) apply.
•
The apparatus may be installed in Zone 2, Zone 22 or outside the explosion hazard
areas.
•
If installed in Zone 2 or Zone 22, the apparatus is to be fitted in an enclosure that meets
the requirements of IEC/EN 60079-15 or IEC/EN 60079-31.
•
Intrinsically safe devices of Zone 1, 0, 21 and 20 may also be connected to the
intrinsically safe signal circuits by using in Zone 2 or Zone 22.
•
The apparatus may be connected only to devices in which no voltages higher than 253 V
AC (50 Hz) may occur.
•
The safe maximum values of the connected field device(s) must correspond to the
values of the data sheet or the EC-type examination certificate.
•
Interconnecting several active devices in an intrinsic safety circuit may result in other
safe maximum values. This could endanger the intrinsic safety!
•
National safety and accident prevention regulations.
•
The generally recognised technical regulations.
•
The safety guidelines in these operating instructions.
•
Any damage can invalidate the explosion protection.
Use the device in accordance with the regulations and for its intended purpose only (see
“Application”).
!
Warning
With incorrect or unauthorized use or non-compliance with these instructions the
intended protection can be impaired, the warranty provision is invalidate on our part in
these cases.
o
No changes to the devices or components impairing their explosion protection are
permitted.
o
Furthermore, the device may only be operated if it is undamaged, dry and clean.
Should there be any question about the correct handling of the module, please contact R.
STAHL Schaltgeräte GmbH, Am Bahnhof 30, 74638 Waldenburg, Germany, telephone
+49-7942-943-0, or contact one of our offices or representatives see
www.stahl-ex.com
.
