Specifications
A–3
Publication 17946.5.2 - May 1996
Specifications - 1794OE4/B Analog Output Module
Number of Outputs
4 singleended, nonisolated
Module Location
Cat. No. 1794TB2, TB3 Terminal Base Unit
Resolution
Voltage
Current
12 bits plus sign
2.56mV/cnt
5.13
µ
A/cnt
Data Format
left justified 16bit 2's complement
Conversion Type
Pulse Width Modulation
Conversion Rate
1.024ms maximum all channels
Output Current Terminal
0mA output until module is configured
420mA user configurable
020mA user configurable
Output Voltage Terminal
0V output until module is configured
±
10V user configurable
0-10V user configurable
Step Response to 63% of FS
24ms
Current Load on Voltage Output
3mA maximum
Resistive Load on mA Output
15 750 ohms
Absolute Accuracy
Voltage Terminal
Current Terminal
0.133% Full Scale @ 25
o
C
0.425% Full Scale @ 25
o
C
Accuracy Drift with Temperature
Voltage Terminal
Current Terminal
0.0045% Full Scale/
o
C
0.0069% Full Scale/
o
C
Calibration
None Required
Isolation Voltage
Tested at 850V dc for 1s between user and system
No isolation between individual channels
Indicators
1 green power indicator
Flexbus Current
20mA
Power Dissipation
4.5W maximum @ 31.2V dc
Thermal Dissipation
Maximum 15.3 BTU/hr @ 31.2V dc
Keyswitch Position
4
Specifications continued on next page.