Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - 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