LSIS XBF-AH04A

XGB Analog edition manual
(4) Relationship between voltage input accuracy and wiring length
In voltage input, the wiring (cable) length between transmitter or sensor and option board has an
effect on digital-converted values of the option board as specified below;
Where,
Rc: Resistance value due to line resistance of cable
Rs: Internal resistance value of transmitter or sensor
Ri: Internal resistance value (1㏁) of voltage input module
Vin: Voltage allowed to analog input module
% Vi: Tolerance of converted value (%) due to source and cable length in voltage input
( )
[ ]
RiRcRs
VsRi
Vin
+×+
×
=
2
1001% ×






−=
Vs
Vin
Vi
%
Vs
Rs
Rc
Rc
Ri
Load
Analog input (Voltage)
Vin
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