1794-IR8 | Allen Bradley FLEX Thermocouple Input Module

Part Number: 1794-IR8 Model1794-IR8 Number of Inputs8 channelsModule Location Cat. No. 1794-TB2, -TB3, -TB3S, -TB3T and -TB3TS Terminal Base UnitsNominal Input Ranges1 to 433 ohmsResolution16 bits across 435 ohmsCommon Mode Rejection-120db @ 60Hz; -100db @ 50Hz with A/D filter cutoff @ 10HzCommon Mode Input Range0V between channels (common return)Isolation VoltageTested at 850V dc for 1s from inputs and user power to logic sideData Format16-bit 2 s complement or offset binary (unipolar)Normal Mode Noise Rejection-60db @ 60Hz for A/D filter cutoff @ 10HzInput Offset Drift w/Temperature1.5 milliohm/?C maximumGain Drift w/Temp.Normal mode: 20ppm/?C max.Enhanced mode: 10ppm/?C max.Channel Bandwidth0-2.62Hz (-3db)Settling time to 100% of final valueAvailable at system throughput rateSystem ThroughputNormal mode - 325ms (1 channel scanned), programmable to 28ms 2.6s (8 channels scanned), programmable to 224msEnhanced mode - programmable from 56 to 650ms/channel - 650ms (1 channel scanned), 2.925s (8 channels scanned)Open TC/RTD Circuit DetectionOut of range reading (upscale)Open TC/RTD Detection TimeAvailable at system throughput rateOvervoltage Capability35V dc, 25V ac continuous at 25?COverall Drift with Temperature50ppm/?C of span (maximum)Cold Junction CompensionRange: 0 to 70?CA-B catalog number 1794-CJC2Channel to channel isolation0VIndicators1 red/green power status indicatorFlexbus Current20mAPower Dissipation3.0W maximum @ 31.2V dcThermal DissipationMaximum 10.2 BTU/hr @ 31.2V dcKeyswitch Position3