Allen-Bradley 1738-IR2M12, User Information

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14 ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
General Specifications
Attribute Value
Mounting base screw torque M4 (#8) screw,
0.85 Nm (7.5 lb-in.) in aluminum, 1.8 Nm (16 lb-in.) in steel
Calibration Factory-calibrated
POINTBus current 1738-IR2 – 220 mA @ 5V DC
1738-IT2I – 175 mA @ 5V DC
Power dissipation, max 1.0 W
Thermal dissipation, max 3.3 BTU/hr
Isolation voltage Tested at 50V rms (1738-IT2I has isolation between individual
channels)
Dielectric test 1000V rms flash for 1s
External DC power No external power required
LED indicators 1 green/red – module status indicator, logic side
1 green/red – network status indicator, logic side
2 green/red – input status indicators, logic side
Dimensions, HxWxD 31.75 x 66.80 x 107.95 mm
(1.25 x 2.63 x 4.25 in.)
Weight 0.289 kg (0.637 lb)
Enclosure type rating Meets IP65/66/67 (when marked)
Wiring category
(1)
1 – on signal ports
Keyswitch position 6
(1)
Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication
1770-4.1 .
Environmental Specifications
Attribute Value
Temperature, operating IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
-20…60 °C (-4…140 °F)
Temperature, storage IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
-40…85 °C (-40…185 °F)
Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Nonoperating Damp Heat):
5…95% noncondensing