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Text version of the page
2/24
2
Automation 02.07.2008
Safety Barriers
Standard Applications
9002/10-187-270-001
9002/10-187-020-001
9002/77-093-040-001
Selection Table
Description Order number
Application Strain gauge load cell 350 O or 700 O
6 wire ± 7.5 V (15 V) field circuit floating
Diagram
09962E02
Nominal values
Operating voltage UN ( ± 7.5 V (15 V)
Voltage for strain
gauge load cell and
wire
UL (at UN ( ± 7.5 V)
Current for strain
gauge load cell
IL (at UN ( ± 7.5 V)
Strain gauge load cell
Number
Resistance RL
350 O 700 O
UL
(V)
IL
(mA)
UL
(V)
IL
(mA)
1234
11.6
9.6
87
35
55
70
80
13.2
11.6
10.6
9.6
19
35
45
55
Safety values
Maximum voltage Uo = 18.7 V
Maximum current Io = 330 mA
Maximum permissible
external inductance Lo
IIC
0.18 mH
IIB
1.45 mH
Maximum permissible
external capacitance Co
IIC
0.270 mF
IIB
1.64 mF
Maximum power Po = 1.45 W
Application note With 4-wire connection (without sense) the respective safety barrier is not
needed. Nominal values remain unchanged; safety maximum current is
reduced to Io = 310 mA and maximum power to Po = 1.36 W.
Note Further technical data see page 53 (9002/10) / 61 (9002/77)
Hazardous area Safe area
9002/10-187-270-001
9002/10-187-020-001
9002/77-093-040-001
+7,5 V
-7,5 V