Rockwell Automation 1762-Lxxxx MicroLogix 1200 Programmable Controllers - Manual (Page 110)

Publication 1762-UM001G-EN-P - March 2011
A-18 Specifications
Table A.22 Input Specifications 1762-IR4
Specification 1762-IR4
Input types
•
100
Ω
Platinum 385
•
200
Ω
Platinum 385
•
500
Ω
Platinum 385
•
1000
Ω
Platinum 385
•
100
Ω
Platinum 3916
•
200
Ω
Platinum 3916
•
500
Ω
Platinum 3916
•
1000
Ω
Platinum 3916
•
10
Ω
Copper 426
•
120
Ω
Nickel 672
•
120
Ω
Nickel 618
•
604
Ω
Nickel-Iron 518
•
0…150
Ω
•
0…500
Ω
•
0…1000
Ω
•
0…3000
Ω
Heat dissipation 1.5 Total Watts (The Watts per point, plus the minimum Watts, with all points enabled.)
Normal mode rejection ratio 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
Typical accuracy
[Autocalibration enabled] at 25 °C (77 °F)
ambient with module operating
temperature at
25 °C (77 °F)
(1)
±0.5 °C (32.9 °F) for Pt 385
±0.4 °C (32.72 °F) for Pt 3916
±0.2 °C (32.36 °F) for Ni
±0.3 °C (32.54 °F) for NiFe
±0.6 °C (33.08 °F) for Cu ±0.15
Ω
for 150
Ω
range
±0.5
Ω
for 500
Ω
range
±1.0
Ω
for 1000
Ω
range
±1.5
Ω
for 3000
Ω
range
Typical accuracy
[Autocalibration enabled] at 0…55 °C
(32…131 °F)
(1)
±0.9 °C (33.62 °F) for Pt 385
±0.8 °C (33.44 °F) for Pt 3916
±0.4 °C (32.72 °F) for Ni
±0.5 °C (32.9 °F) for NiFe
±1.1 °C (33.98 °F) for Cu ±0.25
Ω
for 150
Ω
range
±0.8
Ω
for 500
Ω
range
±1.5
Ω
for 1000
Ω
range
±2.5
Ω
for 3000
Ω
range
Accuracy drift at 0…55 °C
(32…131 °F) ±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 ±0.007
Ω
/°C (0.012
Ω
/°F) for 150
Ω
range
±0.023
Ω
/°C (0.041
Ω
/°F) for 500
Ω
range
±0.043
Ω
/°C (0.077
Ω
/°F) for 1000
Ω
range
±0.072
Ω
/°C (0.130
Ω
/°F) for 3000
Ω
range
Excitation current source 0.5 mA and 1.0 mA selectable per channel
Open-circuit detection time
(2) 6…1212 ms
Input channel configuration 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.
Calibration 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.
Maximum overload at input terminals ±35V dc continuous
Cable impedance, max. 25
Ω (
Operating with >25
Ω
will reduce accuracy.)
Power supply distance rating 6 (The module may not be more than 6 modules away from the system power supply.)
Channel to channel isolation ±10V dc
(1) Accuracy is dependent upon the Analog/Digital converter filter rate selection, excitation current selection, data format, and input noise.
(2) Open-circuit detection time is equal to channel update time.