User Manual

Appendix A
Publication 1771-6.5.130 Ć May 1999
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Number of Inputs 8, all of the same type or 4 each of 2 different types
I/O Chassis Location Any single I/O module slot
Type of Input (Selectable) Type E, chromel/constantan (-270 to 1000
o
C)
Type J, iron/constantan (-210 to 1200
o
C)
Type K, chromel/alumel (-270 to 1380
o
C)
Type R, Pt/Pt-13% Rh (-50 to 1770
o
C)
Type T, copper/constantan (-270 to 400
o
C)
Type S, Pt/Pt-10% Rh (-50 to 1770
o
C)
Millivolt (-100 to +100mV dc)
Thermocouple Linearization IPTS-68 standard, NBS MN-125
Cold Junction Compensation Range: 0 to 60
o
C
Accuracy: +0.5
o
C
Temperature Scale (Selectable)
o
Cor
o
F
Input Resolution 1
o
C, 1
o
F, or 10uV
Input Isolation 1000V peak between inputs, between input and common, and
between input and backplane connections
Common Mode Rejection 120dB at 60Hz, up to 1000V peak
Common Mode Impedance Greater than 10 megohms
Normal Mode Rejection 60dB at 60Hz
Input Overvoltage Protection 120V rms, continuous
Open Input Detection Open input produces a maximum value reading in less than 10
seconds
Input Connections 18-terminal wiring arm (Cat. No. 1771-WI)
Data Format (Selectable) 4-digit BCD
2's complement binary
signed magnitude binary
Calibration Auto-calibration (offset and gain)
Zero offset and gain adjustment for each channel via programming
terminal
Verify every six months for maintaining absolute accuracy
Processor Compatibility Any A-B processor using the 1771 I/O structure and block transfer
Environmental Conditions
Operating Temperature:
Rate of Change:
Storage Temperature:
Relative Humidity:
0to60
o
C (32 to 140
o
F)
Ambient changes greater than 0.5
o
C per minute may temporarily
degrade performance during periods of change
-40 to 85
o
C (-40 to 185
o
F)
5 to 95% (without condensation)
Backplane Power Consumption 750mA @ 5V; 3.75 Watts maximum
Field Wiring Arm Cat. No. 1771-WI
Keying Between 20 and 22
Between 24 and 26
Agency Certification (when product is
marked)
•CSA certified
•CSA Class I, Division 2, Groups A, B, C, D certified
•UL listed
•CE marked for all applicable directives
•C-Tick marked for all applicable acts