Rockwell-automation 1790-XXXX CompactBlock LDX I/O DeviceNet RTD and T Bedienungsanleitung Seite 12

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12
Publication 1790-IN011B-EN-P - April 2003
3-Wire RTD Configuration
4-Wire RTD Configuration
Wiring Resistance Devices (Potentiometers)
Potentiometer wiring requires the same type of cable as
that for the RTD. Potentiometers can be connected to the
module as a 2-wire or 3-wire connection as shown in the
following figures:
2-Wire Potentiometer Interconnection
CH0_A
CH0_B
COM
Cable Shield (to Ground)
RTD EXC
RTD EXC
Sense
Sense
Return
Return
CH0_A
CH0_B
COM
Cable Shield (to Ground)
RTD EXC
RTD EXC
Sense
Sense
Return
Return
Leave this sensor wire open
CH0_A
CH0_B
COM
CH0_A
CH0_B
COM
Add Jumper
Cable Shield (to Ground)
RTD EXC
Return
Potentiometer
Add Jumper
Cable Shield (to Ground)
RTD EXC
Return
Potentiometer
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