Technical data

Publication 1794-2.1 - January 2000
102 24V dc Selectable Analog 4 Output Module Cat. No. 1794-OE4 Series B FLEX I/O and FLEX Integra Product Data
Specifications - 1794-OE4/B
Number of Outputs 4 single-ended, non-isolated
Module Location Cat. No. 1794-TB3, -TB3S, -TB2, -TB3T, -TB3TS, or
-TBN Terminal Base Unit
Resolution
Voltage
Current
12 bits plus sign
2.56mV/cnt
5.13µA/cnt
Data Format Left justified 16-bit 2’s complement
Conversion Type Pulse Width Modulation
Conversion Rate 1.024ms maximum all channels
Output Current Terminal 0mA output until module is configured
4-20mA user configurable
0-20mA 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
Maximum 3mA
Resistive Load on
mA Output
15 - 750 Ω
Absolute Accuracy
1
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 @ 5V dc
Power Dissipation Maximum 4.5W @ 31.2V dc
Thermal Dissipation Maximum 15.3 BTU/hr @ 31.2V dc
Keyswitch Position 4
General Specifications
External dc Power
Supply Voltage
Voltage Range
Supply Current
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
70mA @ 24V dc (not including outputs)
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
1794-5.5
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