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Table2:Rating and Parameters of I.S
.
Ta= 40
°
C
, Um= 125V Uo=13.2V
I.S rating of each terminal as follows.
I.S. Terminal No.
11-12 and 21-22
11-12
21-22
(P1
～
P5)-N
Uo(Vt)
13.2V
13.2V
Io(It)
28.4mA
14.2mA
Po
93.8mW
46.9mA
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Typical Installation:
Install the Relay Barrier must be according to the following Ratings and Parameters of I.S. and
descriptions.
To avoid electrical shock, install the 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 : To set up common wiring, connect two “ N “ terminals between adjacent the Relay Barrier in parallel.
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Connections:
Connect the wires to the Relay Barriers according to the following formula:
Also, refer to Table.3
Table 3
Connection
Number
Type No.
Unit Number
Available Maximum
Safe Circuit Channel
Available AUX
Circuit Channel
Total Io [mA]
1
1
2
0
56.8
2
2
4
0
113.6
3
3
6
0
170.4
4
EB3N-
□
2
□
D
4
8
0
227.2
5
1
2
5
127.8
6
2
4
8
227.2
＊
3
6
4
227.2
＊
EB3N-
□
2
□
5
□
D
4
8
0
227.2
EB3N-
□
2
□
D
1
7
EB3N-
□
2
□
5
□
D
1
4
5
184.6
EB3N-
□
2
□
D
2
8
EB3N-
□
2
□
5
□
D
1
6
4
227.2
EB3N-
□
2
□
D
3
＊
EB3N-
□
2
□
5
□
D
1
8
0
227.2
EB3N-
□
2
□
D
1
＊
EB3N-
□
2
□
5
□
D
2
6
4
227.2
EB3N-
□
2
□
D
1
＊
EB3N-
□
2
□
5
□
D
3
8
0
227.2
＊
: since these are included in the other connection number circuit, actual wiring does not need.
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
Po(mW) 46.9 93.8 140.6 187.5 234.3 281.2 328.1 375.9 421.8 468.7 515.5 562.4 609.2 656.1 702.9 750
Combined
Lo(mH)
Note 2 The intrinsic safe apparatus
and wirings shall be accordance to
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
following formulas; for examples,
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
Ui
>
Uo
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
Ii
>
Io
Co(uF)
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
Pi
>
Po
Ci+Cc
<
Co
Li+Lc
<
Lo
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) 175* 87.5 30.0 2.5 0.55 0.25 43.5* 21.5 20.0 3.5 0.43 0.25 0.68* 0.34 0.68 0.6 0.22 0.13
Co(nF) 900* 450 330 540 770 900 900* 450 300 480 800 900 900* 450 450 490 800 900
*:Therefore, only in combination with a cable this values are allowable at Li<1%Lo and Ci<1%Co of the intrinsic safe apparatus
apparatus.
Intrinsically Safe Circuit
28.4mA
×
Chanel
（Max.8ch）
＋
Intrinsically AUX Circuit
14.2mA
×
Chanel
≦ 227.2mA
