XGB Analog edition manual
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(4) Relationship between voltage input accuracy and wiring length
In voltage input, the wiring (cable) length between transmitter or sensor and module has an effect
on digital-converted values of the module 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