Siemens OOH740-A9-Ex - Connecting the Detector Base

5
Mounting/Installation
Connecting the detector base
54
Building Technologies A6V10367521_h_en_--
Fire Safety 2015-02-02
5.10 Connecting the detector base
WARNING
Connecting non
-
approved devices in an intrinsically safe circuit
Risk of explosion
● In an intrinsically safe circuit, only connect equipment that conforms to
country-specific regulations and is approved for ignition protection category
'Intrinsic safety
Ex
ia' or 'Intrinsic safety
Ex
ib'.
Note the positive and negative poles.
Only connect one wire per terminal. This is the only way to ensure the connection
is failure-free for the entire service life of the device.
If you are permanently decommissioning the equipment, observe the national
regulations governing unused cables in areas at risk of explosion.
We recommend that you do not use shielded cables for stub lines in areas at risk
of explosion.