- Two-wire RTD circuits require a jumper between the channel excitation and sense terminals
- Three-wire RTDs use separate excitation, sense, and return conductors
- Four-wire RTDs connect as a three-wire circuit, with the second sense lead left open
1769-IR6 supports two-wire, three-wire, and four-wire RTD connections, but each sensor type requires the terminal arrangement documented for the selected channel.
For a two-wire RTD, install the required jumper between EXC and SENSE; for three-wire operation, connect EXC, SENSE, and RTN separately; a four-wire RTD is wired as a three-wire device.
Use the specified shielded cable, terminate the shield as shown in the official wiring diagrams, and keep sensor conductors separated from electrical-noise sources before validating channel readings.
Availability, condition, price, and shipping time for 1769-IR6 are confirmed during quotation.
Allen-Bradley 1769-IR6 6-Channel RTD/Resistance Input Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Each of the six channels is configured independently for RTD or resistance measurement
- Excitation current, filter, data format, units, and broken-input response are channel selections
- Disabled channels are not scanned, reducing the update burden on active channels
- Two- and three-wire RTDs connect directly; a four-wire RTD uses three conductors
- Shielded twisted-pair cable and short grounding connections reduce electrical noise
- Lead-wire resistance should be low and closely matched for accurate compensated measurements
- Channel status identifies open-circuit conditions
- Over-range and under-range flags are available for each input
- Configuration and hardware errors are reported through module status data
- Six-channel RTD temperature measurement
- Direct resistance and potentiometer measurement
- Remote RTD/resistance acquisition through a 1769-ADN DeviceNet station