Selecting Voltage Or Current Inputs For The Analog Input Module; Analog Input Module: Field Wiring For Current/Voltage - Siemens SIMATIC 505 PPX:505–6108A User Manual

Selecting Voltage The Analog Input Module has eight input channels. Each of the eight
or Current Inputs channels may be selected to receive either voltage or current as the
for the Analog incoming analog signal. See Figure 2-5.
Input Module
Series 505 Analog I/O Modules User Manual
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To wire voltage input signals, wire the input signal directly to the
voltage input point.
To wire current input signals, you must jumper the voltage input point
to the current input point for that channel.
Channel 1 Input
250 Ω
Internal
Resistor
Current
Return
Channel 2 Input
250 Ω
Internal
Resistor
Voltage
Return
Figure 2-5 Analog Input Module: Field Wiring for Current/Voltage
A2 Shield
jumper
Field Device
A1
A3
Shield
To Earth Ground
B2 Shield
Field Device
B1
B3
Shield
To Earth Ground
Installation 2-9