Status indicator, Specifications – Rockwell Automation 1794-IF4I FLEX I/O 4 Isolated Input Module User Manual
Page 5
FLEX™ I/O Isolated Input Analog Module 5
Publication 1794-IN038E-EN-P - November 2011
Status Indicator
The OK status indicator is two-colored: red and green. The indicator flashes green
for one of three reasons:
1. The module configuration word is zero (for example, power up reset
condition).
2. The 24V DC user power is off.
3. The module is in configuration mode.
The indicator displays red to indicate that the module did not pass the initial
hardware test. Cycle power again.
After power up, if the status indicator is not flashing green or solid green, cycle
module power once more to verify a proper reset of the bus interface.
Specifications
General Specifications
Attribute
Value
Number of inputs
4 isolated
Module location
1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, 1794-TB3TS, and 1794-TBN
FlexBus voltage
5V DC
FlexBus current
50 mA
External DC power supply,
nom voltage range
24V DC
19.2…31.2V DC (includes 5% AC ripple)
External DC power supply
current
80 mA @ 24V DC
Thermal dissipation, max
6.8 BTU/hr @ 31.2V DC
Power dissipation, max
2.0 W @ 31.2V DC
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.
Data format
2’s complement
2’s complement %
Binary
Offset binary
Indicators
1 red/green power/status indicator
Keyswitch position
3
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.)
Conductor category
(1)
(1)
Use this conductor category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication
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
Module Specifications – 1794-IF4I
Attribute
Value
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
Conversion type
Sigma Delta
Update rate
2.5/5.0/7.5 ms all channels (see the
Input Update Rate for Real Time Sample
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)
Step response to 63% of full
scale
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
Voltage terminal
Current terminal
>10 M
<100
(2)
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
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
Calibration required
Factory-calibrated. Can be calibrated in field when necessary.
Maximum overload
30V continuous or 32 mA continuous, one channel at a time.
(1)
Includes offset, gain, non-linearity and repeatability error terms.
(2)
If 24V DC is removed from the module, input resistance = 10 k
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)
Certifications (when product is marked)
(1)
Attribute
Value
c-UL-us
UL Listed Industrial Control Equipment, certified for US and Canada. See UL
File E65584.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified
for U.S. and Canada. See UL File E194810.
CSA
CSA Certified Process Control Equipment. See CSA File LR54689C.
CSA Certified Process Control Equipment for Class I, Division 2 Group A,B,C,D
Hazardous Locations. See CSA File LR69960C.
Ex
European Union 94/9/EC ATEX Directive, compliant with:
EN 60079-15; Potentially Explosive Atmospheres, Protection "n"
EN 60079-0; General Requirements
II 3 G Ex nA IIC T4 X
Module Specifications – 1794-IF4I