Belden HIRSCHMANN RS2-3TX/2FX EEC Deskripsi dan Petunjuk Pengoperasian - Halaman 3

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HAZARDOUS LOCATION Class
I, Division 2 Groups A, B, C, D
Detail: RS2-xxx
Detail: RT2-xxx
The Use in Hazardous Locations is only allowed for Rail Switch 2 and Rail Transceiver 2 Family model No's which are individually labelled
"FOR USE IN CLASS I, DIVISION 2 HAZARDOUS LOCATIONS"
Notes:
The nonincendive fi eld wiring circuit concept allows interconnection of nonincendive fi eld wiring apparatus and associated nonincendive
1
fi eld wiring apparatus using any of the wiring methods permitted for unclassifi ed locations when certain parametric conditions are met
Capacity:
C a ≥ C i + C Cable
Inductivity:
L a ≥ L i + L Cable
The maximum cable length has to be determined as follows:
(a) max. Cable Length < (L a - L i ) / L Cable and (b) max. Cable Length < (C a - C i ) / C Cable
The lower value of (a) and (b) is to apply.
Cable L : inductance per unit length of used cable.
Cable C : capacitance per unit length of used cable.
Other C-parameters and L-parameters are according to ANSI / ISA 12.12.01-2012 section 7.
Where cable capacitance and inductance values per foot are not known, the following values shall be used:
C Cable 60 pF/foot, L Cable 0.2 µH/foot
Nonincendive fi eld wiring circuits must be wired in accordance with the National Electric Code (NEC), NFPA 70, article 501.
Nonincendive Field Wiring Parameters:
The Relay Contacts are dependent upon the
WARNING – EXPLOSION HAZARD – SUBSTITUTION OF ANY COMPONENTS MAY IMPAIR SUITABILITY FOR HAZAR-
DOUS LOCATIONS OR EXPLOSIVE ATMOSPHERES.
WARNING – EXPLOSION HAZARD – DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR
THE AREA IS KNOWN TO BE NON-HAZARDOUS.
DO NOT OPEN WHEN ENERGIZED.
The equipment must be installed in a tool-locked enclosure.
CONTROL DRAWING for Industrial ETHERNET
Rail Switch 2 and Rail Transceiver 2 Family
According to ANSI / ISA 12.12.01-2012
Rev.: 0 Date: 2012-07-13 Document No.: 000163806DNR
NON HAZARDOUS LOCATION
following Entity Parameters:
Power Supply: (Redundant: P1, P2)
24 V DC
Relay Contacts:
Associated Apparatus:
Equipment with nonincendive
fi eld wiring
Power Supply: (Redundant: P1, P2)
24 V DC
Relay Contacts:
Associated Apparatus:
Equipment with nonincendive
fi eld wiring
V
I
max
max
30 V
90 mA
1
1
C
L
i
i
2.5 nF
1 µH
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