IDEC EB3N Relay Barrier Intrinsically Safe System Instruction Manual

: June 15, 2024
: IDEC

Table of Contents

Installation instructions
Dielectric Strength: Between intrinsically safe circuit and non-
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IDEC EB3N Relay Barrier Intrinsically Safe System

IDEC EB3N Relay Barrier Intrinsically Safe System

Installation instructions

When installing an IDEC Type EB3N Safety Relay Barrier, make sure it conforms to the following drawings and descriptions as well as all applicable requirements.
EN IEC 60079-0:2018, EN 60079-11:2012, EN 60079-25:2010, EN 60079-14:2014
All intrinsically safe systems must have “EB3N” in the part number. The Safety Relay Barrier must be located in a safe area
(non-hazardous area). The intrinsically safe apparatus, such as the Contact certificated, approved or considered to be a “simple apparatus” such as the Switch specified by standard, may be located in the hazardous area.

Servicing – Replacement and Repairs : Inspection and replacement of the Safety Relay Barriers shall not be made until power is disconnected and shall not be connected again until all replacement Safety Relay Barriers are properly re-assembled. All electrical components, including the interconnecting wiring, shall be kept in safe condition. Defective Safety Relay Barriers should be returned to the factory for repair.

Warning ! Substitution of components or unauthorized repair may impair intrinsic safety of apparatus.
To maintain intrinsic safety, the Signal input terminal (n1-n2, Pn-N3) may only be connected to intrinsically safe circuits
where both the wiring and the connected equipment maintain 500 V isolation to the hazardous area earthing/bonding
connections.

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 Safety Relay Barrier on a 35mm track or directly mount on a panel surface using screws.

Certified Safety 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

Operations

| Terminals| Ratings
---|---|---
Power Supply| Input:| +,-| 24V DC (-15%,+10%)
Safety Circuit| Input:| 11-12, 21-22| 12V DC, 10 mA (source)
Output| 13-14, 23-24| 2NO: DC-13 24V, 1A(Ind.)

30V DC, 1A(Res.)

Rating and Parameters of I.S.
Ta= 60°C, Um= 250V, Uo=13.2V, Io= 14.2mA, Po= 46.9mW at each terminals (channels) 11-12, 21-22, Pn-Nn

Io(mA)| 14.2| 28.4| 42.6| 56.8| 71.0| 85.2| 99.4| 113.6| 127.8| 142.0| 156.2| 170.4| 184.6| 198.8| 213.0| 227.2| Combined Lo(mH)| Note 2 The intrinsic safe apparatus and wirings shall be accordance to following formulas; for

examples,

Ui > Uo

Ii > Io

Pi > Po

Ci+Cc < Co

Li+Lc < Lo

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Po(mW)| 46.9| 93.8| 140.6| 187.5| 234.3| 281.2| 328.1| 374.9| 421.8| 468.6| 515.5| 562.4| 609.2| 656.1| 702.9| 750

Co(μF)

| 0.67| 0.65| 0.63| 0.61| 0.59| 0.57| 0.55| 0.53| 0.51| 0.49| 0.47| 0.44| 0.42| 0.39| –| –| 1.0
0.79| 0.77| 0.76| 0.75| 0.73| 0.72| 0.70| 0.69| 0.67| 0.66| 0.64| 0.62| 0.61| 0.59| 0.57| 0.55| 0.5
0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.93| 0.92| 0.91| 0.90| 0.88| 0.87| 0.86| 0.85| 0.84| 0.2
0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.94| 0.1
Note 1 Added to above table, the next values combined Lo and Co are allowable;
Io(mA)| 14.2| 28.4| 227.2
Lo(mH)| 176| 88.0| 2.50| 1.60| 0.84| 0.48| 0.25| 44.0| 22.0| 3.50| 1.40| 0.76| 0.45| 0.25| 0.68| 0.68| 0.60| 0.42| 0.30| 0.22| 0.15
Co(μF)| 0.94| 0.47| 0.55| 0.60| 0.70| 0.80| 0.94| 0.94| 0.47| 0.48| 0.60| 0.70| 0.80| 0.93| 0.94| 0.45| 0.49| 0.60| 0.70| 0.80| 0.94
*: Therefore, the values are allowable only at Li<1%Lo or Ci<1%Co of the intrinsic safe apparatus.

Typical Installation: Install the Safety Relay Barrier must be according to the following Ratings and Parameters of I.S. and descriptions. To avoid electrical shock, install the Safety Relay Barrier in a tool-accessible enclosure. Layout and wiring must be done to prevent the inductive or capacitive induction to the intrinsically safe circuit. For example, separate intrinsically safe circuits from non-intrinsically safe circuits, by a minimum space of 50mm or using a full height metal separator. If color-coding is required use for the intrinsic safe components and terminals, use only cables and terminals with light blue markings. Common wiring (max 16 channels): To set up common wiring, connect two “ N “ terminals between adjacent the Safety Relay Barrier in parallel. Maintain at least 3 mm clearance between the external connection terminals and the grounded metal part.

Lot No

a b c d e f-g

a : Production base
b , c : Year (example : 22 → 2022)
d : Month
e , f : Date
g : Number of product

Dielectric Strength: Between intrinsically safe circuit and non-

intrinsically safe circuit 1526.4V AC.
Example of connections: The marks indicate the samples of single intrinsic safe circuits

IDE CORPORATION

Manufacturer: IDEC CORPORATION 2-6-64, Nishi Miyahara, Yodogawa-ku, Osaka532-0004, Japan
EU Authorized Representative : APEM SAS
55, Avenue Edouard Herriot BP1, 82303 Caused Cedex, France

EU DECLARATION OF CONFORMITY
We, IDEC CORPORATION 2-6-64, Nishi Miyahara, Yodogawa-ku, Osaka532-0004, Japan
declare under our sole responsibility that the product : / Description : Safety Relay Barrier / Model No : EB3N
to which this declaration relates is in conformity with the EC Directive on the following standard(s) or other normative document(s). In case of alteration of the product, not agreed upon by us, this declaration will lose its validity.
Applicable EC Directive : ATEX Directive ( 2014 / 34 / EU ) / EMC Directive ( 2014 / 30 / EU )
/RoHS Directive ( 2011 /65 /EU )
Applicable Standard(s) : EN60079-0, EN60079-11 ( ATEX ) / EN60947-5-1 ( EMC )
/EN IEC63000 (RoHS)

UK Authorized Representative :APEM COMPONENTS LIMITED
Drakes Drive, Long Crendon, Buckinghamshire, HP18 9BA, UK

UKCA DECLARATION OF CONFORMITY
declare under our sole responsibility that the product : / Description : Safety Relay Barrier / Model No : EB3N
to which this declaration relates is in conformity with on the following standard(s) or other normative document(s). In case of alteration of the product, not agreed upon by us, this declaration will lose its validity.
Applicable Standard(s) : EN60079-0, EN60079-11 ( S.I. 2016 No.1107 )
/ EN60947-5-1(S.I. 2016 No. 1091) / EN IEC 63000 (S.I. 2016 No.3303)