Technical data

Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data
24V dc Source Isolated Analog 4 Output Module Cat. No. 1794-OF4I 113
Specifications - 1794-OF4I
Number of Outputs 4 isolated
Module Location Cat. No. 1794-TB3, -TB3S, -TB2, -TB3T, -TB3TS,
and -TBN Terminal Base Units
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)
±5V (user configurable)
0-5V (user configurable)
Resolution
Voltage
Current
15 bits plus sign
0.320mV/cnt
0.656µA/cnt
Isolation Voltage 120V ac continuous (when used with -TB3, -TB3S,
-TB2, -TB3T and -TB3TS)
250V ac continuous (when used with -TBN)
Module is factory tested to 2550V dc for 1s
between: channel to channel
channel to user power
channel to system
user power to system
Flexbus Current 50mA
Power Dissipation 4.7W maximum @ 31.2V dc
Thermal Dissipation Maximum 16 BTU/hr @ 31.2V dc
Indicators 1 green power/status indicator
Keyswitch Position 4
Data Format 2’s complement, 2’s complement%
binary
offset binary
Conversion Type Digital to analog converter
Update Rate 2.5/5.0ms
Calibration Factory calibrated
Step Response to 63%
of FS
<25µs
Absolute Accuracy
1
Voltage Terminal
Current Terminal
0.1% Full Scale @ 25
o
C
0.1% Full Scale @ 25
o
C
Accuracy Drift w/Temp.
Voltage Terminal
Current Terminal
0.0012% Full Scale/
o
C
0.0025% Full Scale/
o
C
Current Load on
Voltage Output
3mA maximum
Resistive Load on
mA Output
0-750Ω
General Specifications
External dc Power
Supply Voltage
Voltage Range
Supply Current
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
210mA @ 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
ConductorsWire Size
Category
12 gauge (4mm
2
) stranded maximum
3/64 inch (1.2mm) insulation maximum
2
2
Publications
Installation Instructions
User Manual
1794-5.37
1794-6.5.8
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