Allen-Bradley MicroLogix 1200 User Manual page 105

Table A.21 Input Specifications 1762-IR4
Specification
Input Types
Heat Dissipation
Normal Mode Rejection Ratio
Typical Accuracy [Autocalibration
Enabled] at 25° C (77°F) Ambient with
Module Operating Temperature at 25° C
(1)
(77°F)
Typical Accuracy [Autocalibration
Enabled] at 0 to 55° C (+32 to +131°F)(1)
Accuracy Drift at 0 to 55° C (+32 to
+131°F)
Excitation Current Source
Open-Circuit Detection Time
Input Channel Configuration
Calibration
Maximum Overload at Input Terminals
Cable Impedance Max.
Power Supply Distance Rating
Channel to Channel Isolation
(1) Accuracy is dependent upon the Analog/Digital converter filter rate selection, excitation current selection, data format, and input noise.
1762-IR4
• 100Ω Platinum 385
• 200Ω Platinum 385
• 500Ω Platinum 385
• 1000Ω Platinum 385
• 100Ω Platinum 3916
• 200Ω Platinum 3916
• 500Ω Platinum 3916
• 1000Ω Platinum 3916
• 10Ω Copper 426
• 120Ω Nickel 672
• 120Ω Nickel 618
• 604Ω Nickel-Iron 518
• 0 to 150Ω
• 0 to 500Ω
• 0 to 1000Ω
• 0 to 3000Ω
1.5 Total Watts (The Watts per point, plus the minimum Watts, with all points enabled.)
70 dB minimum at 50 Hz with the 10 or 50 Hz filter selected
70 dB minimum at 60 Hz with the 10 or 60 Hz filter selected
±0.5°C (°F) for Pt 385
±0.4°C (°F) for Pt 3916
±0.2°C (°F) for Ni
±0.3°C (°F) for NiFe
±0.6°C (°F) for Cu
±0.9°C (°F) for Pt 385
±0.8°C (°F) for Pt 3916
±0.4°C (°F) for Ni
±0.5°C (°F) for NiFe
±1.1°C (°F) for Cu
±0.026°C/°C (0.026°F/°F) for Pt 385
±0.023°C/°C (0.023°F/°F) for Pt 3916
±0.012°C/°C (0.012°F/°F) for Ni
±0.015°C/°C (0.015°F/°F) for NiFe
±0.032°C/°C (0.032°F/°F) for Cu
0.5 mA and 1.0 mA selectable per channel
6 to 1212 ms
(2)
Via configuration software screen or the user program (by writing a unique bit pattern into the
module's configuration file). Refer to your controller's user manual to determine if user
program configuration is supported.
The module performs autocalibration on channel enable and on a configuration change
between channels. You can also program the module to calibrate every five minutes.
±35V dc continuous
25Ω (Operating with >25Ω will reduce accuracy.)
6 (The module may not be more than 6 modules away from the system power supply.)
±10V dc
±0.15Ω for 150Ω range
±0.5Ω for 500Ω range
±1.0Ω for 1000Ω range
±1.5Ω for 3000Ω range
±0.25Ω for 150Ω range
±0.8Ω for 500Ω range
±1.5Ω for 1000Ω range
±2.5Ω for 3000Ω range
±0.007Ω/°C (0.012Ω/°F) for 150Ω range
±0.023Ω/°C (0.041Ω/°F) for 500Ω range
±0.043Ω/°C (0.077Ω/°F) for 1000Ω range
±0.072Ω/°C (0.130Ω/°F) for 3000Ω range
Publication 1762-UM001D-EN-P - March 2004
Specifications A-15