Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module User Manual
Page 74

74
Rockwell Automation Publication 1769-UM005B-EN-P - March 2012
Chapter 4 Module Data, Status, and Channel Configuration
Calculating Module Update Time with Autocalibration Enabled
The following example illustrates how to determine module update time with
autocalibration enabled.
Table 19 - Calibration Steps and Their Affect on Module Update Time
Calibration Step
Calibration Time (ms)
Step 1 RTD ADC zero
73 ms
Step 2 RTD ADC span
106 ms
Step 3 RTD system zero
73 ms
Step 4 RTD ADC wire zero
73 ms
Step 5 RTD ADC wire span
106 ms
Step 6 system wire zero
73 ms
Current Source Calibration
Calibration Time (ms)
Current source zero
73 ms
Current source gain
106 ms
Current source resistor calibration
303 ms
Table 20 - Input Type and Class
Input Type
Input Class
Using 0.5 mA Source
Using 1.0 mA Source
100
Ω Pt 385
1
2
200
Ω Pt 385
2
3
500
Ω Pt 385
3
4
1000
Ω Pt 385
4
Cannot use this source
100
Ω Pt 3916
1
2
200
Ω Pt 3916
2
3
500
Ω Pt 3916
3
4
1000
Ω Pt 3916
4
Cannot use this source
10
Ω Cu 426
Cannot use this source
6
120
Ω Ni 618
1
2
120
Ω Ni 672
1
2
604
Ω NiFe 518
3
4
150
Ω
5
1
500
Ω
1
2
1000
Ω
2
3
3000
Ω
4
Cannot use this source
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