Rockwell Automation 1798-IB4 FlexArmor User Manual User Manual

Page 57

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Publication 1798-UM001B-EN-P - November 2002

Specifications A-5

Specifications for the 1798-IE4 Module

Specifications - 1798-IE4 Analog Input Module

Module Type

Analog Input

Number of Channels

4 single-ended, non-isolated

ResolutionBits
Voltage/Cnt
Current/Cnt

12 - Unipolar, 11+ sign - Bipolar
2.56 mV - Unipolar; 5.13 mV - Bipolar
5.13 uA

Data Format

16 bit; 2’s complement; left-justified

Conversion Type

Successive approximation

Conversion Rate

256 us - All channels

Current Terminal

4-20 mA; 0-20 mA (user configurable)

Voltage Terminal

±10V; 0-10V (user configurable)

Normal Mode Rejection
Voltage Terminal

Current Terminal

-3 db @ 17 Hz; -20 db/decade;
-10 db @ 50 Hz; 11.4 db @ 60 Hz
-3 db @ 9 Hz; -20 db/decade;
-15.3 db @ 50 Hz; -16.8 db @ 60 Hz

Step Response to 63%
Voltage Terminal
Current Terminal

9.4 ms
18.2 ms

Impedance:Voltage Terminal
Current Terminal

100 k

; 200 k

@ DC

238

Absolute Accuracy
Voltage Terminal
Current Terminal

0.20% FS @ 25°C
0.20% FS @ 25°C

Accuracy Drift:Voltage Terminal
Current Terminal

0.00428% FS per°C
0.00407% FS per°C

Calibration

None Required

Maximum Overload
Voltage Terminal
Current Terminal

Single channel; continuous
30V
32 mA

Isolation Voltage

850V dc channel-to-system for 1s

FlexBus Current

10 mA maximum

Sensor Source Current
(per connector)

50 mA

Power dissipation

2.5W @ 28.8V dc

Thermal Dissipation

8.5 BTU/hr @ 28.8V dc

Indicator

1 fault LED Indicator - red

External DC Power
Voltage (24V dc nom.)
Current

10-28.8V dc; 5% AC ripple
50 mA @ 24V dc

Dimensions
(H x D x W)

118 mm x 57 mm x 40 mm
4.63 in. x 2.25 in. x 1.58 in.

Operational Temperature

IEC 60068-2-1 (Test Ad, Operating Cold),

IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
-20 to 60°C (-4 to 140°F)

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