BEKA BA414DF-F, Manual

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3.2 Ex ia entity systems
The BA414DF-F Fieldbus Indicator has Ex ia
certification with entity parameters for applications
in Zone 0, 1 and 2.
The BA414DF-F Fieldbus Indicator may be
connected to any intrinsically safe segment
providing:
The device powering the fieldbus segment is
ATEX Ex ia certified for Zone 0, 1 or 2
applications, or Ex ib certified for application
in Zone 1 or 2, or Ex ic certified for
applications in Zone 2.
The output
parameters of the segment should be equal
to or less than:
Uo = 22V dc
Io = 250mA dc
Po = 1.2W
The segment can provide an additional 13mA
to power the Fieldbus Indicator.
The equivalent capacitance Ci of the
BA414DF-F Fieldbus Indicator is zero and
the equivalent inductance is insignificant.
Therefore these BA414DF-F parameters do
not need to be considered.
3.3 Ex ic entity systems
The BA414DF-F Fieldbus Indicator also has Ex ic
certification with entity parameters for applications
in Zone 2.
The higher Ui voltage allows the
indicator to be used with segment couplers
powered by Ex e or Power-i fieldbus trunks.
When installed in Zone 2 the BA414DF-F Fieldbus
Indicator may be connected to any intrinsically safe
segment providing:
The device powering the fieldbus segment is
ATEX Ex ia, ib or ic certified and has output
parameters equal to or less than:
Uo = 32V dc
Io = 125mA dc
Po = 1W
The segment can provide an additional 13mA
to power the Fieldbus Indicator.
The equivalent capacitance Ci of the
BA414DF-F Fieldbus Indicator is zero and
the equivalent inductance is insignificant.
Therefore these BA414DF-F parameters do
not need to be considered.
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