The Allen-Bradley 1769-IR6 is a CompactLogix analog RTD/resistance input module that has Six (6) RTD input channels available.

The input ranges of this module are 0 to150 Ohms, 0 to 500 Ohms, 0 to 1000 Ohms, and 0 to 3000 Ohms and it has a maximum common mode voltage range of +/- 10 Volts DC. The 1769-IR6 module has 1.5 Watts of power dissipation and it draws currents of 100 mA at 5.1 Volts and of 45 mA at 24 Volts. It also has an isolation voltage of 720 Volts DC for 1 minute from channel to bus, optical and magnetic (qualification), as well as a working voltage of 30 Volts AC/30 Volts DC. Its open circuit detection time ranges from 6 milliseconds to 303 seconds and it has impedances of 25 Ohms for the cable and of more than 10 megaohms for the input.
The Allen-Bradley 1769-IR6 module has a built-in status LED available and it can be mounted using a DIN rail or panel. When using a panel, the 1769-IR6 module has an operating shock of 30 G, a relay operating shock of 7.5 G, and a non-operating shock of 40 G. A DIN-rail mounted module has an operating shock of 20 G, a relay operating shock of 5 G, and a non-operating shock of 30 G. It also has an operating vibration of 5 G at 10 to100 Hertz and its non-condensing relative humidity range is 5 to 95%. This module has a removable terminal block (RTB) interface and an open-type enclosure. The entire 1769-IR6 module measures approximately 1.38 x 3.43 x 4.65 inches. The 1769-IR6 module supports an RTD and direct resistance signal measurement applications. This module digitally converts analog data and it stores the converted data. Each of the 6 supported channels provides open-circuit and short-circuit as well as over- and under-range detection and indication.

The Allen-Bradley 1769-IR6 is an analog input module which belong to the Compact I/O product family. This module is specifically used for Resistance Temperature Detectors (RTD) and Resistance signals. This module may be used with MicroLogix 1500 and 1769 CompactLogix controllers. This module also supports installation on distributed IO rack, provided that the communication adapters used are 1769-ADN DeviceNet and 1769-AENTR Ethernet adapter.

Up to support Six (6) RTD instruments may be wired to this module. Compatible RTD types, whether 2,3 or 4-Wire RTDs are Copper 426, Nickel 618, Nickel 672, Nickel-Iron 518, Platinum 385, Platinum 3916. to 2, 3 and 4 wire RTDs. When using 4-wire RTD, one of the compensation wires is not terminated to the terminal. Aside from RTD sensors, this module supports direct wiring of resistance signals such as 150??, 500 ?, 1000 ? and 3000 ?.

Primarily, this module is designed for Temperature applications as RTD sensors are Temperature measuring devices. With resistance signal capability, this module may also be used in determining or measuring displacement or movement of a specific device. Common displacement measurement applications are found in factory automation requirements such as clamping, rotation and other similar tasks.

Each channel of the module is provided with an open circuit, short-circuit and over and under-range sensor detection. This module status may be linked to the controller’s diagnostic buffed and further be used as signal quality indicator in Human Machine Interface (HIMI) or Supervisory Control and Data Acquisition (SCADA). This way, a bad sensor may sensor or defective channel may be easily detected.

Signal filters are also provided and individually configured. Signal filtering frequency options include 10 Hz 50 Hz 60 Hz 250 Hz 500 Hz 1 kHz.

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