Rockwell Automation 1766-L32AWA, User Manual

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146 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix A Specifications
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). See your controller’s user manual to determine if user program configuration is supported.
Calibration
The module performs auto-calibration 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.
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.
Input Specifications 1762-IR4 (Continued)
Specification 1762-IR4
Input Specifications 1762-IT4
Specification Value
Heat dissipation 1.5 Total Watts (The Watts per point, plus the minimum Watts, with all points energized.)
Response speed per channel Input filter and configuration dependent.
Rated working voltage
(1)
30V AC/30V DC
Normal mode rejection ratio
85 dB (minimum) at 50 Hz (with 10 Hz or 50 Hz filter)
85 dB (minimum) at 60 Hz (with 10 Hz or 60 Hz filter)
Cable impedance, max. 25 Ω
(
for specified accuracy)
Open-circuit detection time
7 ms…1.515 s
(2)
Calibration
The module performs auto-calibration upon power-up and whenever a channel is enabled. You can also
program the module to calibrate every five minutes.
CJC accuracy ±1.3 °C (±2.34 °F)
Maximum overload at input terminals
±35V DC continuous
(3)
Input channel configuration
via configuration software screen or the user program (by writing a unique bit pattern into the module’s
configuration file).
(1) Rated working voltage is the maximum continuous voltage that can be applied at the input terminal, including the input signal and the value that floats above ground potential (for example, 30V DC
input signal and 20V DC potential above ground).
(2) Open-circuit detection time is equal to the module scan time, which is based on the number of enabled channels, the filter frequency of each channel, and whether cyclic calibration is enabled.
(3) Maximum current input is limited due to input impedance.
Table 17 - 1762-IT4 Repeatability at 25 °C (77 °F)
(1) (2)
(1) Repeatability is the ability of the input module to register the same reading in successive measurements for the same input signal.
(2) Repeatability at any other temperature in the 0...60 °C (32...140 °F) range is the same as long as the temperature is stable.
Input Type Repeatability for 10 Hz Filter
Thermocouple J ±0.1 °C [±0.18 °F]
Thermocouple N (-110…1300 °C [-166…2372 °F]) ±0.1 °C [±0.18 °F]
Thermocouple N (-210…-110 °C [-346…-166 °F]) ±0.25 °C [±0.45 °F]
Thermocouple T (-170…400 °C [-274…752 °F]) ±0 .1 °C [±0.18 °F]
Thermocouple T (-270…-170 °C [-454…-274 °F]) ±1.5 °C [±2.7 °F]
Thermocouple K (-270…1370 °C [-454 °F…2498 °F]) ±0.1 °C [±0.18 °F]
Thermocouple K (-270…-170 °C [-454…-274 °F]) ±2.0 °C [±3.6 °F]
Thermocouple E (-220…1000 °C [-364…1832 °F]) ±0.1 °C [±0.18 °F]
Thermocouple E (-270…-220 °C [-454…-364 °F]) ±1.0 °C [±1.8 °F]
Thermocouples S and R ±0.4 °C [±0.72 °F]
Thermocouple C ±0.2 °C [±0.36 °F]
Thermocouple B ±0.7 °C [±1.26 °F]
±50 mV ±6
μ
V
±100 mV ±6 μ V