App.1-49
TI 32S01J30-01E
Appendix 1. US (FM) NI/Canada (FM) NI/IECEx Ex “ec”/ECAS-EX Ex “ec”
Model: S2BN5D-*
Date: June 20, 2016
Rev.
Doc. No.: IFM052-A100 P.1
Drawing: N. Nakahashi
Approved: D. Harada
Yokogawa Electric Corporation
Control Drawing
NOTES:
1
The Entity Concept allows interconnection of intrinsically safe apparatus with associated
apparatus not specifically examined in combination as a system when the approved values of Voc
(or Uo) and Isc (or Io) for the associated apparatus are less than or equal to Vmax(Ui) and Imax(Ii)
for the intrinsically safe apparatus. Capacitance and inductance of the field wiring from the
intrinsically safe equipment to the associated apparatus shall be calculated and must be included
in the system calculations. Cable capacitance, Ccable, plus intrinsically safe equipment
capacitance, Ci must be less than the marked capacitance, Ca (or Co), shown on any associated
apparatus used. The same applies for inductance (Lcable, Li and La or Lo, respectively). Where the
cable capacitance and inductance per foot are not known, the following values shall be used: Ccable
= 60 pF/ft., Lcable =
0.2 μH/ft.
The Entity Parameters of each channel depends on the barrier which is plug in the Base plate (see
control drawing of the barrier).
2
This associated apparatus may also be connected to simple apparatus as defined in Article 504.2
and installed and temperature classified in accordance with Article 504.10(B) of the Nati onal
Electrical Code (ANSI/NFPA 70), or other local codes, as applicable.
3
Where multiple circuits extend from the same piece of associated apparatus, they must be installed
in separate cables or in one cable having suitable insulation. Refer to Article 504.30(B) of the
National Electrical Code (ANSI/NFPA 70) and Instrument Society of America Recommended
Practice ISA RP12.6 for installing intrinsically safe equipment.
4
Intrinsically safe circuits must be wired and separated in accordance with Article 504. 20 of the
National Electrical Code (ANSI/NFPA 70) or other local codes, as applicable.
5
Associated apparatus must be installed in an enclosure suitable for the application in accordance
with the National Electrical Code (ANSI/NFPA 70) for installation in the United States, the
Canadian Electrical Code for installations in Canada, or other local codes, as applicable.
6
The Base plates shall not be connected to any device which uses or generates internally any voltage
in excess of the maximum voltage Um of the barriers which are plug in the Base plate (see Control
drawing of the barrier) unless the device has been determined to adequately isolate the voltage
from the Base plate.
7
Wiring methods must be in accordance with the National Electrical Code for installations in the
United States, the Canadian Electrical Code for installations in Canada, or other local codes, as
applicable.
A n y S i m p l e A p p a r a t u s o r a p p r o v e d
d e v i c e wi t h E n t i t y C o n c e p t p a r a m e t e r s
( V
m a x
, I
m a x
, C
i
, L
i
) a p p r o p r i a t e f o r c o n n e c t i o n
t o A s s o c i a t e d A p p a r a t u s wi t h E n t i t y C o n c e p t
p a r a m e t e r s l i s t e d i n T a b l e 1 .
NONHAZARDOUS LOCATION
or
HAZARDOUS (CLASSIFIED) LOCATION
CLASS I, DIVISION 1, GROUPS A,B,C,D
CLASS II, DIVISION 1, GROUPS E,F,G
CLASS III, DIVISION 1
or
CLASS I, ZONE 0 and 1, IIC
ZONE 20 and 21, IIIC
NONHAZARDOUS LOCATION
or
CLASS I, DIVISION 2, GROUPS A,B,C,D
or
CLASS I, ZONE 2, GROUP IIC
Base Plate for Barrier
Intrinsically Safe
Connections
Non-Intrinsically Safe
Connections
2
1
4 3
5 8 9
7
6
