Safety Notes
6
914660330020
2017-11-24·HB00·III·en·00
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Frequency Transmitter
Field Circuit Ex i
Series 9146
3.3
Safe Use
Before assembly
• Read and observe the safety notes in this manual.
• Ensure that the contents of this manual 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 not covered by the technical data.
• Make sure that the device is not damaged.
• We are not liable for damage caused by incorrect or unauthorised use of the device or
by non-compliance with this manual.
For mounting and installation
• Have mounting and installation performed only by qualified and authorised persons
(see "Qualification of the personnel" section).
• The device is only to be installed in zones 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 the device in Zone 2 or Zone 22 or outside of hazardous areas.
• For use in Zone 2 or Zone 22, install the device in an enclosure.
• When used in Zones 2, 22, the intrinsically safe devices of Zones 1, 0, 21 and 20 can
be connected to the intrinsically safe signal circuits.
• Only connect the device to equipment which does not carry voltages higher than
253 V AC (50 Hz).
• Devices of group M1 can also be connected to the Ex i electrical circuits.
• Electric 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.
Commissioning, maintenance, repair
• Only have commissioning and repairs performed by qualified and authorised persons
(see "Personnel qualification" section).
• Before commissioning, make sure that the device is not damaged.
• Only perform maintenance work described in this manual.
