Yokogawa EJX930A - Manual (Page 15)

<2. Handling Cautions>
2-4
IM 01C25T02-01E
SAFE AREA HAZARDOUS AREA
F0202.ai
Terminator
(FISCO Model)
Ex i
Field Instruments
(Passive)
Hand-
held-
Terminal
Supply Unit and
Safety Barrier
(FISCO Model)
Terminator
Data
U
U
I
I.S. fieldbus system complying with FISCO model
 Installation Diagram for Nonincendive
(Division 2 Installation)
Non-Hazardous location
FM Approved
Associated Nonincendive Field
Wiring Apparatus
Vt or Voc
It or Isc
Ca
La
Hazardous location
F0203.ai
Terminator
General Purpose
Equipment
Pressure
Transmitter
SUPPLY
Terminator
+
−
Transmitter
+
−
Transmitter
+
−
+ −
+ −
Note 1. Installation should be in accordance with
the National Electrical Code ® (ANSI/NFPA
70) Article 500.
Note 2. The configuration of Associated
Nonincendive Field Wiring Apparatus must
be FM Approved.
Note 3. Approved under FNICO Concept.
Note 4. Dust-tight conduit seal must be used
when installed in Class II and Class III
environments.
Note 5. Associated Apparatus manufacturer’s
installation drawing must be followed when
installing this apparatus.
Note 6. No revision to drawing without prior FM
Approvals.
Note 7. Terminator must be FM Approved.
Note 8. The nonincendive field wiring circuit concept
allows interconection of nonincendive
field wiring apparatus with associated
nonincendive field wiring apparatus, using
any of the wiring methods permitted for
unclassified locations.
Note 9. Installation requirements;
Vmax ≥ Voc or Vt
Imax = see note 10.
Ca ≥ Ci + Ccable
La ≥ Li + Lcable
Note 10. For this current controlled circuit, the
parameter (Imax
3
) is not required and
need not be aligned with parameter
(Isc
3
) of the barrier or associated
nonincendive field wiring apparatus.
Note 11. If ordinary location wiring methods are
used, the transmitter shall be connected
to FM Approved associated non-incendive
field wiring apparatus.
Electrical data:
Vmax: 32V
Ci:1.76 nF
Li: 0 µH