BEKA BA368E, Руководство пользователя

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3.6 Remote reset terminals
The BA368E Counter may be reset to zero by
connecting the reset terminals RS1 and RS2
together for more than one second. These two
terminals have the following input and output safety
parameters:
Uo = 3.8V
Io = 1mA
Po = 1mW
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
The equivalent capacitance and inductance between
them is:
Ci = 0nF
Li = 0

H
The maximum capacitance and inductance that may
be safely connected between the reset terminals
RS1 and RS2 is:
Co = 40µF
Lo = 1H
The total Counter display may be reset to zero from
within the hazardous area by any mechanically
operated switch contact connected directly to
terminals RS1 and RS2. To reset the total display
from the safe area a Zener barrier or intrinsically
safe relay is required to transfer the contact closure
into the hazardous area. Almost any intrinsically
safe relay with certification permitting the contacts to
be connected to equipment in the hazardous area
may be used. A positive polarity Zener barrier may
also be used as shown in Fig 2.
Alternatively, the BA368E Counter may be
configured so that the total display is reset to zero
when the
&
and
*
push buttons are operated
simultaneously for more than three seconds.
See 6.24.
3.7 Certification label information
The certification information label is fitted in a recess
on the top outer surface of the enclosure. It shows
the ATEX and IECEx certification information, plus
BEKA associates name and location and the
instrument serial number. Non European
certification information may also be included.
BA368E Certification information label
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