Allen-Bradley MicroLogix 1200 User Manual page 108

A-18 Specifications
Table A.24 1762-IT4 Accuracy
(1)
Input Type
Thermocouple E (-210°C to +1000°C [-346°F to
+1832°F])
Thermocouple E (-270°C to -210°C [-454°F to -346°F])
Thermocouple R
Thermocouple S
Thermocouple C
Thermocouple B
±50 mV
±100 mV
(1) The module uses the National Institute of Standards and Technology (NIST) ITS-90 standard for thermocouple linearization.
(2) Accuracy and temperature drift information does not include the affects of errors or drift in the cold junction compensation circuit.
(3) Accuracy is dependent upon the analog/digital converter output rate selection, data format, and input noise.
(4) Temperature drift with autocalibration is slightly better than without autocalibration.
Table A.25 Output Specifications
Specification
Number of Outputs
Update Time (typical)
D/A Converter Type
Resistive Load on Current Output
Load Range on Voltage Output
Reactive Load, Current Output
Reactive Load, Voltage Output
(1)
Typical Overall Accuracy
Output Ripple
range 0 to 500 Hz
(referred to output range)
Publication 1762-UM001D-EN-P - March 2004
With Autocalibration Enabled
(2) (3)
Accuracy
Hz Filters (max.)
at 25°C [77°F]
Ambient
±0.5°C [± 0.9°F]
±4.2°C [± 7.6°F]
±1.7°C [± 3.1°F]
±1.7°C [± 3.1°F]
±1.8°C [±3.3°F]
±3.0°C [±5.4°F]
±15 μV
±20 μV
For more detailed 1762-IT4 accuracy information, see
TIP
publication 1762-UM002.
1762-IF2OF2
2 single-ended (unipolar)
4.5 ms
Resistor string
0 to 500 Ω (includes wire resistance)
> 1KΩ
< 0.1 mH
< 1 μF
±1% full scale at 0 to 55°C
±0.5% full scale at 25°C
< ±0.1%
for 10 Hz, 50 Hz and 60
at 0 to 60°C
[32 to 140°F]
Ambient
±0.8°C [±1.5°F]
±6.3°C [±11.4°F]
±2.6°C [± 4.7°F]
±2.6°C [± 4.7°F]
±3.5°C [±6.3°F]
±4.5°C [±8.1°F]
±25 μV
±30 μV
1762-OF4
4 single-ended (bipolar)
R-2R Ladder Voltage Switching
0 to 500 Ω (includes wire resistance)
> 1KΩ
< 0.1 mH
< 1 μF
±1% full scale at 0 to 55°C
±0.5% full scale at 25°C
< ±0.1%
Without Autocalibration
Maximum Temperature Drift
(4)
at 0 to 60°C [32 to 140°F]
Ambient
±0.0199°C/°C [±0.0199°F/°F]
±0.2698°C/°C [±0.2698°F/°F]
±0.0613°C/°C [±0.0613°F/°F]
±0.0600°C/°C [±0.0600°F/°F]
±0.0899°C/°C [±0.0899°F/°F]
±0.1009°C/°C [±0.1009°F/°F]
μ μ
±0.44 V/°C [±0.80 V/°F]
μ μ
±0.69 V/°C [±01.25 V/°F]
(2)