User manual

Publication 1797-6.5.1 - April 1999
Appendix A
Specifications
1797-IE8 Specifications
Number of Inputs 8 single-ended, non-isolated
IS Input Type EEx ia IIB/IIC T4, Class I, II, III Division 1 Group A-G
IS Module Type EEx ib IIB/IIC T4, Class I Division 1 Group A-D
Resolution 16 bits
Transfer Characteristics
Accuracy at 20°C (68°F)
Temperature Drift
0.1% of output signal range
0.005%/C of output signal range
Functional Data Range >15V @22mA
>17V @ 0mA
Data Format Configurable
Step Response to
99% of FS
4ms
Indicators 8 red fault indicators
1 green power
Output (Intrinsically Safe)
(16 pin male and female
flexbus connector)
U
i
< 5.8V dc
I
i
< 400mA
L
i
= Negligible
C
i
< 1.35µF
Isolation Path
Input to Power Supply
Input to Flexbus
Input to Input
Power Supply to
Flexbus
Isolation Type
Galvanic to DIN EN50020
Galvanic to DIN EN50020
None
Galvanic to DIN EN50020
Power Supply
(+V, -V intrinsically safe)
U
i
< 9.5V dc
I
i
< 1A
L
i
= Negligible
C
i
= Negligible
Module Field-side Power
Consumption
7.5W
Power Dissipation 5.2W
Thermal Dissipation 17.75 BTU/hr
Module Location Cat. No. 1797-TB3 or -TB3S
Conductor Wire Size
12 gauge (4mm
2
) stranded maximum
3/64in (1.2mm) insulation maximum