18
INM9491 Rev 3
b) Unless already protected by design, this equipment must be protected by a suitable enclosure
against:
i) mechanical and thermal stresses in excess of those noted in the certification documentation
and the product specification.
ii) aggressive substances, excessive dust, moisture and other contaminants.
c) This apparatus is intrinsically safe electrical apparatus and is normally mounted in a safe
area. When mounted in a Zone 2 location the apparatus must be provided with an enclosure,
which offers an additional degree of protection appropriate to the area classification.
Special conditions for safe use (when mounted in a Zone 2 hazardous area)
a) The equipment shall be installed in an additional enclosure that is certified as meeting or
exceeding the enclosure requirements of EN/IEC 60079-0 and EN/IEC 60079-15 (e.g. a
certified Ex e enclosure). The minimum level of ingress protection provided shall be IP 54.
b) When using the option to connect the power supply module to an external backplane via
connector X1, the following conditions apply:
♦ The external backplane shall be fitted with two retention clips type MTL 012-533 (Honeywell
part no. 51153961-100) that allow the power supply module to be ‘clipped’ to the
backplane.
♦ The power supply module being ‘clipped’ to the backplane forms part of the hazardous
area protection and as such the retention clips shall always be in place when the power
supply module is energised.
♦ Any backplane used does not form part of this certified equipment and as such shall be
separately certified or assessed for use in Zone 2.
c) The maximum current drawn from terminals 1, 3, 5 and 6 combined shall not exceed 480mA
in normal operation.
Inspection and maintenance
a) Inspection and maintenance should be carried out in accordance with European, national
and local regulations which may refer to the IEC standard IEC 60079-17. In addition specific
industries or end users may have specific requirements which should also be met.
b) Access to the internal circuitry must not be made during operation.
Repair
This product cannot be repaired by the user and must be replaced with an equivalent certified
product.
Marking
Each device is marked in accordance with the Directive and CE marked with the Notified Body
Identification Number.
This information applies to products manufactured during or after the year 2010.
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