Technical data

Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data
24V dc Selectable Analog 8 Input Module Cat. No. 1794-IE8 Series B 99
Wiring
TB3, TB3S,
TB2, TB3T,
TB3TS
TB3, TB3S,
TB2 TB3T, TB3TS
TB3, TB3S,
TB2, TB3T,
TB3TS
TB3, TB3S,
TB2 TB3T, TB3TS
Channel Signal
Type
Input
Terminals
Common Terminals Shield Channel Signal
Type
Input
Terminals
Common Terminals Shield
0
Current A-0 B-17 B-17 C-39
4
Current A-8 B-25 B-25 C-43
Voltage A-1 B-18 B-17 C-39 Voltage A-9 B-26 B-25 C-43
1
Current A-2 B-19 B-19 C-40
5
Current A-10 B-27 B-27 C-44
Voltage A-3 B-20 B-19 C-40 Voltage A-11 B-28 B-27 C-44
2
Current A-4 B-21 B-21 C-41
6
Current A-12 B-29 B-29 C-45
Voltage A-5 B-22 B-21 C-41 Voltage A-13 B-30 B-39 C-45
3
Current A-6 B-23 B-23 C-42
7
Current A-14 B-31 B-31 C-46
Voltage A-7 B-24 B-23 C-42 Voltage A-15 B-32 B-31 C-46
24V dc Common for TB2, TB3, TB3S: B-16 thru B-33
24V dc Common for TB3T and TB3TS: B-16, 17, 19, 21, 23, 25, 27, 29, 31, and 33
+24V dc Power for TB2: C-34 and C-51; +24V dc Power for TB3 and TB3S: C-34 thru C-51
+24V dc Power for TB3T and TB3TS: C-34, 35, 50, and 51
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1716 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
51
50
1794-TB3
1794-TB3S
1794-TB2
1794-TB3T
1794-TB3TS
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0-15
16-33
34-51
A
B
C
30233
34 and 51
for TB2
Specifications - 1794-IE8/B
Number of Inputs 8 single-ended, non-isolated
Module Location Cat. No. 1794-TB3, -TB3S, -TB2, -TB3T, or -TB3TS
Terminal Base Unit
Input Current Terminal 4-20mA (user configurable)
0-20mA (user configurable)
Input Voltage Terminal ±10V (user configurable)
0-10V (user configurable)
Resolution
Voltage
Current
12 bits - unipolar; 11 bits plus sign - bipolar
2.56mV/cnt unipolar; 5.13mV/cnt bipolar
5.13µA/cnt
Input Impedance
Voltage Terminal
Current Terminal
100k Ω
238 Ω
Input Resistance
Voltage Terminal
Current Terminal
200k Ω
238 Ω
Isolation Voltage Tested at 850V dc for 1s between user
and system
No isolation between individual channels
Flexbus Current 20mA @ 5V dc
Power Dissipation 3W maximum @ 31.2V dc
Thermal Dissipation Maximum 10.2 BTU/hr @ 31.2V dc
Indicators 1 green power indicator
Keyswitch Position 3
Data Format Left justified 16-bit 2’s complement
Conversion Type Successive approximation
Conversion Rate 256µs all channels
Normal Mode Rejection Ratio
Voltage Terminal
Current Terminal
-3db @ 17Hz; -20db/decade
-10.0dB @ 50Hz, -11.4dB @ 60Hz
-3db @ 9Hz; -20db/decade
-15.3dB @ 50Hz, -16.8dB @ 60Hz
Calibration None Required
Step Response to 63%
Voltage Terminal
Current Terminal
9.4ms
18.2ms
Specifications - 1794-IE8/B (continued)
Absolute Accuracy
1
Voltage Terminal
Current Terminal
0.20% Full Scale @ 25
o
C
0.20% Full Scale @ 25
o
C
Accuracy Drift w/Temp.
Voltage Terminal
Current Terminal
0.00428% Full Scale/
o
C
0.00407% Full Scale/
o
C
Maximum Overload 30V or 32mA continuous, 1 channel at a time
General Specifications
External dc Power
Supply Voltage
Voltage Range
Supply Current
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
60mA @ 24V dc
Dimensions HxWxD 46mm x 94mm x 53mm (1.8in x 3.7in x 2.1in)
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock Operating
Non-operating
Vibration
0 to 55
o
C (32 to 131
o
F)
-40 to 85
o
C (-40 to 185
o
F)
5 to 95% noncondensing (operating)
5 to 80% noncondensing (non-operating)
30g peak acceleration, 11(±1)ms pulse width
50g peak acceleration, 11(±1)ms pulse width
Tested 5g @ 10-500Hz per IEC 68-2-6
Conductors Wire Size
Category
12 gauge (4mm
2
) stranded maximum
3/64 inch (1.2mm) insulation maximum
2
2
Publications
Installation Instructions
User Manual
1794-5.6
1794-6.5.2
Agency Certification
1 Includes offset, gain, non-linearity and repeatability error terms.
2 Use this conductor category information for planning conductor routing. Refer to
publication 1770-4.1, “Industrial Automation Wiring and Grounding Guidelines for Noise
Immunity.”
Class I Division 2 certified
Groups A, B, C, D certified
Class I Zone 2 Group IIC certified