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Text version of the page
2/11
2
Automation 17.04.2008
Dual-Channel Safety Barriers
Safety Barrier Polarity: + / Signal Barrier Polarity: +
Series 9002/13
Dual-channel safety barrier
Safety barrier polarity: + / signal barrier polarity: +
05439E02
• Diode return barrier for supply and
return signals in one unit with
very small entity current (Io) addition
from the second channel
• Operational current limited to 40 mA
at 250 O load
• Allows the connection of unregulated
power supplies, Un, to channel 1
• Approved for installation in Division 2
and Zone 2
Selection Table
Channel
UN Rmin. Rmax. Imax. ÄU Safety-specific data Order number
Uo Io Po IIC IIB
Lo Co Lo Co
V O O mA V V mA mW mH mF mH mF
12
1+2
20 - 35
22
- -
216 243 144 - -
3.5
25.2
25.2
25.2
118
0
121
740
20
760
1.3
50
1.25
0.107
0.107
0.104
7.4
150
7.35
0.82
0.82
0.8
9002/13-252-121-041
Functional and Maximum Safety Values
UN Rated operating voltage ãU Additional voltage drop
through the safety barrier
Lo Maximum permissible
external inductance
Rmin. Minimum resistance
of the safety barrier
Uo Maximum voltage Co Maximum permissible
external capacity
Rmax. Maximum resistance
of the safety barrier
Io Maximum current
Imax. Maximum current
through the safety barrier
Po Maximum power
+ve +ve
0V
+ve +ve
UN
/ PA
Intrinsically safe
field device(s)
Control room
equipment
Safe area Hazardous area
*) leakage at 24 V / 35 V Ileak ( 1 mA / 10 mA