Derating curves – Rockwell Automation 1794-IB16D_OB16D Flex I/O 16 Input and 16 Output w/Diagnostics Module Installation Instructions User Manual

Page 5

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Publication 1794-IN096B-EN-P - February 2004

Derating Curves

1794-IB16D Input Voltage

Sensor Power

Specifications - 16 Output Module w/Diagnostics 1794-OB16D

Meets IEC 0.5A 24V dc Output Specifications

Number of Outputs

16 (1 group of 16), group isolation

Module Location

Cat. No. 1794-TB2, -TB3, -TB3S

Output Voltage

10V dc minimum
24V dc nominal
31.2V dc maximum

On-state Current

2.0mA minimum per output
0.5A per output, 8A per module maximum

Output Current Rating

8.0A (16 outputs @ 0.5A)

Surge Current

2A for 50ms, repeatable every 2s

Off-state Voltage

31.2V dc maximum

Off-state Leakage

0.5mA maximum

On-state Voltage Drop

0.5V dc at 0.5A

Isolation Voltage

Tested at 2121V dc for 1s between user and system
No isolation between individual channels

Indicators (field side
indication, customer device
driven)

16 yellow on/off status indicators (field side)
16 red diagnostic status indicators (each channel, field side)
1 red module fault indicator (field side)

Flexbus Current

60mA

Power Dissipation

4.8W maximum @ 31.2V dc

Thermal Dissipation

Maximum 16.4 BTU/hr @ 31.2V dc

Short Circuit Protect and
Detection

Thermal shutdown (auto reset)
Detection condition: when external power active, output signal
active, and output port voltage less than 2V.

Open Wire Detect off-state
leakage current

0.1mA - When external power active and output signal inactive.

Detect Reverse Polarity
Voltage

10V minimum: Module must detect if the reverse polarity external
power supply voltage is greater than the value.

General Specifications

Module Keying

Position 2

Terminal Base Screw
Torque

7 pound-inches (0.8Nm)

Dimensions (with module
installed)

1.8H x 3.7W x 2.1D inches
45.7H x 94.0W x 53.3D mm

External dc power
Supply voltage
Voltage range

24V dc nominal
10.0 to 31.2V dc (includes 5% ac ripple)

Environmental Conditions

Operating Temperature

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):
0 to 55°C (32 to 131°F)

Storage Temperature

IEC 60068-2-1 (Test Ab, Un-packaged Non-operating Cold),
IEC 60068-2-2 (Test Bb, Un-packaged Non-operating Dry Heat),
IEC 60068-2-14 (Test Na, Un-packaged Non-operating Thermal
Shock):
–40 to 85°C (–40 to 185°F)

Relative Humidity

IEC 60068-2-30 (Test Db, Un-packaged Non-operating

Damp Heat):
5 to 95% non-condensing

Vibration

IEC60068-2-6 (Test Fc, Operating):
5g @ 10-500Hz

Shock

IEC60068-2-27 (Test Ea, Unpackaged shock)
Operating 30g
Non-operating 50g

Emissions

CISPR 11:
Group 1, Class A (with appropriate enclosure)

ESD Immunity

IEC 61000-4-2:
6kV contact discharges
8kV air discharges

Radiated RF Immunity

IEC 61000-4-3:

10V/m with 1kHz sine-wave 80%AM from 80MHz to 2000MHz

10V/m with 200Hz 50% Pulse 100%AM at 900Mhz

10V/m with 200Hz 50% Pulse 100%AM at 1890Mhz

EFT/B Immunity

IEC 61000-4-4:
±2kV at 5kHz on signal ports

±2kV at 5kHz on power ports

Surge Transient
Immunity

IEC 61000-4-5:
±1kV line-line(DM) and ±2kV line-earth(CM) on signal ports

±1kV line-line(DM) and ±2kV line-earth(CM) on power ports

Conducted RF Immunity

IEC 61000-4-6:
10Vrms with 1kHz sine-wave 80%AM from 150kHz to 80MHz

Enclosure Type Rating

None (open-style)

Conductors

Wire Size