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Allen Bradley | PLC-5 | 1771-NIVR | Image

Allen Bradley | PLC-5 | 1771-NIVR | Image Allen Bradley | PLC-5 | 1771-NIVR | Image

SKU 2173334  UPC 0799705797512

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The Allen-Bradley 1771-NIVR is a high-resolution input module with 8 inputs (4 current/voltage and 4 RTDS) which have a voltage rating of +/-5 Volts and it has a current rating of +/-20 milliamperes. Its Resistance Temperature Detector (RTD) inputs have a resistance rating that ranges from 1 to 650 ohms. The 1771-NIVR module exerts a load (current) of 1.2 Amps on the backplane and it has a power dissipation rated at 6 watts. The module has a 140 Volts AC RMS overvoltage protection (inputs), a resistance (input) exceeding 10 mΩ and an offset drift rating of +/-25 milliohms per degree Celsius.

The 1771-NIVR has a 168uV per bit input resolution. The input range for the 1771-NIVR is determined by the type of RTD used. The RTDs available (at 100ohms) to be used are: platinum (has an input range between -200 and +870 degrees Celsius); platinum (has input range of between -200 and +630 degrees Celsius); copper, 10 ohms, (input range of between -200 and +260 degrees Celsius); while the nickel RTD is used at 120 ohms has an input range of between -80 and +320 degrees Celsius. The resolution of the 1771-NIVR module is also dependent on the type of RTD used. The 1771-NIVR module has a normal excitation current of 1 milliamps and an offset gain of +/-25 milliohms per degree Celsius. When installing or servicing the 1771-NIVR module, it is recommended that the users switch off the power to the input-output chassis to avoid injury to personnel and damage to the module and other components inside the I/O chassis.

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