Rockwell Automation 1794-IF2XOF2I FLEX I/O 2 In/2 Out Isolated Analog Combo Module User Manual
Page 5
FLEX™ I/O Isolated Input/Output Analog Module 5
Publication 1794-IN039F-EN-P - November 2011
Isolation voltage
120V (continuous), Basic Insulation Type, channel to channel, channel to user,
channel to system, and user power to system when used with 1794-TB2,
1794-TB3, 1794-TB3S, 1794-TB3T, or 1794-TB3TS.
250V (continuous), Basic Insulation Type, channel to channel, channel to user,
channel to system, and user power to system when used with 1794-TBN.
Type tested at 1000V AC for 60 s.
Indicators
1 red/green power/status indicator
Keyswitch position
5
Dimensions, with module
installed in base; HxWxD
94.0 x 94.0 x 66.0 mm
(3.7 x 3.7 x 2.6 in.)
Calibration
Factory-calibrated for 150 Hz, 300 Hz, and 600 Hz. Can be recalibrated when
necessary.
Conductor category
(1)
2 – on signal ports
2 – on power ports
Conductor wire size
Determined by installed terminal base
Wire type
Shielded on signal ports
North American temp code
T4A
IEC temp code
T4
(1)
Use this conductor category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication
Input Specifications
Attribute
Value
Number of inputs
2 isolated
Resolution
Voltage
Current
16 bits – unipolar; 15 bits plus sign – bipolar
0.156 mV/cnt unipolar; 0.313 mV/cnt bipolar
0.320
A/cnt unipolar; 0.640 A/cnt bipolar
Data format
2’s complement
2’s complement %
Binary
Offset binary
Conversion type
Sigma Delta
Update rate
2.5/5.0/7.5 ms all channels (see
Update Rate for Real Time Sample Interval = 0
table)
Input current terminal
4…20 mA (user configurable)
0…20 mA (user configurable)
±20 mA (user configurable)
Input voltage terminal
±10V (user configurable)
0…10V (user configurable)
±5V (user configurable)
0…5V (user configurable)
Normal mode rejection ratio –
voltage or current terminal
-3 dB @ 12 Hz (300 Hz conversion rate)
-80 dB @ 50 Hz (300 Hz conversion rate)
-3 dB @ 6 Hz (150 Hz conversion rate)
-80 dB @ 60 Hz (150 Hz conversion rate)
Common mode rejection ratio -120 dB @ 50/60 Hz
Step response to 63% –
voltage or current terminal
1200 Hz conversion rate = 0.6 ms
600 Hz conversion rate = 6.7 ms
300 Hz conversion rate = 13.4 ms
150 Hz conversion rate = 26.7 ms
Input resistance
Voltage terminal
Current terminal
>10 M
<100
(2)
Absolute accuracy
(1)
Voltage terminal
Current terminal
0.1% full scale @ 25 °C
0.1% full scale @ 25 °C
Accuracy drift w/temperature
Voltage terminal
Current terminal
0.0028% full scale/°C
0.0038% full scale/°C
(1)
Includes offset, gain, non-linearity and repeatability error terms.
(2)
If 24V DC is removed from the module, input resistance = 10 k
Output Specifications
Attribute
Value
Number of outputs
2 isolated
Resolution
Voltage
Current
15 bits plus sign
0.320 mV/cnt
0.656
A/cnt
General Specifications
Data format
2’s complement
2’s complement %
Binary
Offset binary
Conversion type
Digital-to-analog converter
Update rate
Update Rate for Real Time Sample Interval = 0
table)
Output current terminal
0 mA output until module is configured
4…20 mA (user configurable)
0…20 mA (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)
Step response to 63%of full
scale
<25
s
Current load on voltage
output, max
3 mA
Resistive load on voltage
output
0…750
Absolute accuracy
(1)
Voltage terminal
Current terminal
0.1% full scale @ 25 °C
0.1% full scale @ 25 °C
Accuracy drift w/temperature
Voltage terminal
Current terminal
0.0028% full scale/°C
0.0038% full scale/°C
(1)
Includes offset, gain, non-linearity and repeatability error terms.
Environmental Specifications
Attribute
Value
Temperature, operating
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…55 °C (-4…131 °F)
Temperature, surrounding air,
max.
55 °C (131 °F)
Temperature, nonoperating
IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock):
-40…85 °C (-40…185 °F)
Relative humidity
IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):
5…95% noncondensing
Vibration
IEC60068-2-6 (Test Fc, Operating):
5 g @ 10…500 Hz
Shock, operating
IEC60068-2-27 (Test Ea, Unpackaged shock):
30 g
Shock, nonoperating
IEC60068-2-27 (Test Ea, Unpackaged shock):
50 g
Emissions
CISPR 11:
Group 1, Class A (with appropriate enclosure)
ESD immunity
IEC 61000-4-2:
6 kV contact discharges
8 kV air discharges
Radiated RF immunity
IEC 61000-4-3:
10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz
10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz
10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz
3V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz
EFT/B immunity
IEC 61000-4-4:
±2 kV @ 5 kHz on power ports
±2 kV @ 5 kHz on shielded signal ports
Surge transient immunity
IEC 61000-4-5:
±1 kV line-line(DM) and ±2 kV line-earth(CM) on power ports
±2 kV line-earth(CM) on shielded signal ports
Conducted RF immunity
IEC 61000-4-6:
10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz
Enclosure type rating
None (open-style)
Output Specifications