Kongsberg EM 2040C, Руководство по обслуживанию

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378511/A
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Optical isolated input signals
330 Ω
I
F
U =1.2V
F
Trig In+
Trig In-
R
E
CD020104_102_001
A Input from external system
B Processing Unit input
circuitry
The input current must
be approximately 10 mA.
Depending on your input signal
additional resistance must be
applied to achieve the required
input current. Two examples
are shown to clarify.
Example:
I =
F
»
10mA
330
W
4.5V - 1.2V(U )
F
Using +4.5V input signal the input current will be as required (~10mA). No additional
resistance required.
Example:
R =1080-330=750
E
W
R =
TOT
=
=1080
W
10mA
12V - 1.2V(U )
F
0.010
10.8
An added resistor of 750Ω and minimum 0.1 Watt must be used.
Note
The input signals must not be negative, i.e. no RS-232 signals can be used for these
inputs.
Optical isolated output signals
The collector current must be approximately 10 mA. A resistor must be used to tune the
collector current depending on your voltage.
Cable layout and interconnections