Rockwell Automation 1771-IR Installation Instructions - Manual (Page 12)

RTD Input Module 12
Publication 1771Ć5.63 - November 1998
Value Description
Agency Certification
(when product or packaging is marked)
• CSA certified
• CSA Class I, Division 2, Groups A, B, C, D certified
• UL listed
• CE marked for all applicable directives
User Manual Publication 1771Ć6.5.129
Major differences between series of the 1771-IR RTD Input module
are shown below.
Description Series A Series B, C and D
Use of Data Table 8 in; 8 out; 8 read words, 14 write words 8 in; 8 out; 9 read words, 15 write words
Resistance Range 18.4 to 400.00 ohms 1.00 to 600.00 ohms
Common Mode Impedance <50 megohms shunted by <4700pF Greater than 10 megohms
Input Overvoltage Protection 40V rms continuous 120V rms continuous
Scan Time 50ms for 6 channels 50ms for 6 channels
Real Time Sampling None 50ms to 3.1s
AutoĆCalibration None Yes - Uses Block Transfer Write word 15
Open RTD Response Time None Open excitation (terminal A) to overrange: <0.5sec
Open common (terminal C) to underrange: <0.5sec
Open sense (terminal B): drift high
Power Dissipation 5.0W maximum 4.75W maximum
Thermal Dissipation 17.0 BTU/hr 16.2 BTU/hr
Agency Certification
(when product or packaging is marked)
• CSA certified
• CSA Class I, Division 2, Groups A, B, C,
D certified
• UL listed
• CSA certified
• CSA Class I, Division 2, Groups A, B, C, D
certified
• UL listed
• CE marked for all applicable directives
Differences Between
Series A, Series B, Series
C and Series D Modules
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Publication 1771Ć5.63 - November 1998 PN 955132-08
Copyright 1998 Rockwell Automation Printed in USA