Type EB3N Relay Barrier
Associated Apparatus providing Intrinsically safe outputs
for use in the following hazardous(classified) locations.
Class
Ⅰ
Ⅰ
Ⅰ
Ⅰ
, Zone 0, [AExia]IIC
Class
Ⅰ
Ⅰ
Ⅰ
Ⅰ
,
Ⅱ
Ⅱ
Ⅱ
Ⅱ
,
Ⅲ
Ⅲ
Ⅲ
Ⅲ
, Div. 1.GrpsA,B,C,D,E,F and G
When installing an IDEC Type EB3N Relay Barrier, make sure it conforms to the following drawings and descriptions
as well as all applicable requirements.
ANSI/NFPA70.
･
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 National Electrical Code
(ANSI/NFPA 70), or other local codes, as applicable.
･
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 as shown in Note 2 of Table 2
below. 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.
･
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.
･
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.
･
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.
･
This associated apparatus has not been evaluated for use in combination with another associated
apparatus.
･
Control equipment must not use or generate more than 120 V rms or dc with respect to earth.
･
For installations in which both the Ci and Li of the intrinsically safe apparatus exceeds 1% of the Co and Lo
parameters of the associated apparatus (excluding the cable), then 50% of Co and Lo parameters are
applicable and shall not be exceeded.
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Servicing – Replacement and Repairs
:
: :
:
Inspection and replacement of the Relay Barriers shall not be made until
power is disconnected and shall not be connected again until all replacement Relay Barriers are properly re-assembled.
All electrical components, including the interconnecting wiring, shall be kept in safe condition. Defective Relay Barriers
should be returned to the factory for repair.
WARNING : Substitution of components or unauthorized repair may impair intrinsic safety of apparatus.
AVERTISSEMENT : La substitution de composants peut compromettre la sécurité intrinsèque de l’appareil.
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Mounting
:
All bolts, nuts, screws, and other means of fastening, including the unused wiring screws, shall be
fastened in place, properly tightened and secured. Mount the Relay Barrier on a 35mm track or directly mount on a
panel surface using screws.
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Certified Relay Barrier
:
Type EB3N
-abc “
EB3N
”= Series type
a =
Safety circuit
A2
:
for auto start, 2 I/O
M2
:
for manual start, 2 I/O
b =
Auxiliary circuit
N
: without auxiliary circuit,
R5
:, relay output, 5 I/O
c =
Power supply
D
:
24V DC
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Table 1:Operations
IDEC CORPORATION
6-64, Nishi-Miyahara, 2-Chome, Yodogawa-Ku,
Osaka 532-0004, Japan www.idec.com
Installation Manual
Terminals
Ratings
Power Supply
Input: + , -
24V DC (-15%,+10%)
Class 2
Input: 11-12, 21-22
12V DC, 10 mA (source)
Safe Circuit
Output 13-14, 23-24
2NO: DC-13 24V, 1A(Ind.)
30V DC, 1A(Res.)
Input: P-N
12V DC, 10mA (source)
Auxiliary Circuit
Output A-C
5NO/common: 24V DC, 3A(Res.)
Reset Circuit
Input: Y1-Y2
24V DC, 5 mA
Draw. No. B-1156-4
Rev. B, Oct. 15, 2014
