Safety Notes
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159855 / 9143601310
2020-12-04·BA00·III·en·14
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Ex-i power supply
Series 9143
3.3
Safe Use
Before mounting
• Read and observe the safety notes in these operating instructions!
• Ensure that the contents of these operating instructions are fully understood by the
personnel in charge.
• Use the device in accordance with its intended and approved purpose only.
• Always consult with R. STAHL Schaltgeräte GmbH if using the device under operating
conditions which are not covered by the technical data.
• Make sure that the device is not damaged.
• We cannot be held liable for damage at the device caused by incorrect or unauthorised
use or non-compliance with these operating instructions.
• Observe the document "Cabinet installation guide" for engineering
(download from r-stahl.com, product documentation, subitem "Engineering").
For mounting and installation
• Have mounting and installation performed only by qualified and authorised persons
(see chapter "Qualification of the personnel").
• The device is only to be installed in areas for which it is suited based on its marking.
• During installation and operation, observe the information (characteristic values and
rated operating conditions) on the rating, data and information plates located on the
device.
• Before installation, make sure that the device is not damaged.
• Install type 9143/10-...-...-10 devices (24 V auxiliary power) only in Zones 2, 22 or
outside of hazardous areas.
• Install type 9143/10-...-...-20 devices only outside of hazardous areas.
• When used in Zone 2, the 9143/10-...-...-10 device is to be installed in a protective
enclosure or in a cabinet according to IEC/EN 60079-31. This enclosure (or cabinet)
has a suitable degree of protection (at least IP54).
• When used in Zone 22, the 9143/10-...-...-10 device is to be installed in a protective
enclosure or in a cabinet according to IEC/EN 60079-31. This enclosure (or cabinet)
has a suitable degree of protection (at least IP64).
• When used in Zones 2 and 22, the intrinsically safe devices of Zones 1 and 21 can be
connected to the intrinsically safe signal circuits.
• Connect the device only to intrinsically safe terminals.
• Only connect the device to equipment which does not carry voltages higher than
253 V AC (50 Hz).
• The safety characteristic values of the connected field devices must correspond to the
specifications in the data sheet or in the EC Type Examination Certificate.
• Interconnecting several devices in a single intrinsically safe circuit can result in
different safety characteristic values. This may impair intrinsic safety!
• Electrical circuits with the "Ex i" type of protection can no longer be operated as circuits
with this protection type after being operated with circuits with other types of protection.
