2 Safety Barriers

Dual-Channel Safety Barriers Polarity: + / -
Series 9002/10
2
Dual-Channel Safety Barriers Polarity: + / -
Safe area
Control room
equipment
0V
+ve
-ve
U N
Hazardous area
+ve
Intrinsically safe
field device(s)
-ve
• Application specific for use with
strain gauge load cells
• One positive polarity channel and
one negative polarity channel in one unit
• Approved for installation in Division 2
and Zone 2
/PA
05821E02
Selection Table
Channel U N R min R max I max Safety Data Order number
U o I o P o IIC IIB
1
2
1+2
1
2
1+2
L o C o L o C o
V O O mA V mA mW mH mF mH mF
6
6
- -
6
6
- -
490
490
- -
42
42
- -
543
543
- -
49
49
- -
11
11
- -
122
122
- -
9.3
9.3
18.7
9.3
9.3
18.7
20
20
20
270
270
270
50
50
90
630
630
1260
90
90
90
0.23
0.23
0.23
3.9
3.9
0.27
3.9
3.9
0.27
330
330
330
2.2
2.2
2.2
29
29
1.64
29
29
1.64
9002/10-187-020-001
9002/10-187-270-001
Note
Application example see General - Standard Applications
Functional and Maximum Safety Values
U N Nominal voltage I max Maximum current
through the safety barrier
R min
R max
Minimum resistance
of the safety barrier
Maximum resistance
of the safety barrier
P o
Maximum power
U o Maximum voltage L o Maximum permissible
external inductance
I o Maximum current C o Maximum permissible
external capacity
Automation 03.08.2010
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