A - specifications, Specifications, Appendix – Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE User Manual
Page 48
Appendix
A
A-1
Specifications
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 B, Pt-30% Rh/Pt-6% Rh (320 to 1800
o
C)
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 S, Pt/Pt-10% Rh
(-50 to 1770
o
C)
Type T, copper/constantan
(-270 to 400
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
C or
o
F
Input Resolution
3.2328
µ
V
Display Resolution
0.1
o
C, 0.1
o
F; or 1.0
µ
V, 10
µ
V
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 over +100mV
Input Overvoltage Protection
120V rms, continuous
Open Input Detection
Open input produces an overrange in less than 10 seconds
Input Connections
18-terminal wiring arm (Cat. No. 1771-WI)
Data Format
2's complement binary
Calibration Methods
Auto - Auto-calibration for offset and gain
Manual - Zero offset and gain adjustment for each channel via
programming terminal
Verify every six months for maintaining absolute accuracy
Processor Compatibility
PLC-3 or PLC-5 family processor using the 1771 I/O structure and
block transfer. (Not recommended for use with PLC-2 family
processors.)
Environmental Conditions
Operating Temperature:
Rate of Change:
Storage Temperature:
Relative Humidity:
0 to 60
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