Technical data

Publication 1794-2.1 - January 2000
74 24V dc 16 Source Output Module Cat. No. 1794-OB16 FLEX I/O and FLEX Integra Product Data
Specifications - 1794-OB16
Number of Outputs 16 (1 group of 16), non-isolated, sourcing
Module Location Cat. No. 1794-TB2, -TB3, or -TB3S
Terminal Base Unit
ON-State Voltage Range 10V dc minimum
24V dc nominal;
31.2V dc maximum
ON-State Voltage Drop 0.5V dc maximum
ON-State Current 1.0mA minimum per channel
500mA maximum per channel
OFF-State Voltage 31.2V dc maximum
OFF-State Leakage 0.5mA maximum
Isolation Voltage (min) 100% tested at 850V dc for 1s between user and
system
No isolation between individual channels
Output Signal Delay
OFF to ON
ON to OFF
0.5ms maximum
1.0ms maximum
Flexbus Current (max) 80mA
Power Dissipation 5.3W maximum @ 31.2V
Thermal Dissipation 18.1 BTU/hr @ 31.2V dc
Indicators (field side
indication, logic driven)
16 yellow status indicators
Output Current Rating 8A (16 outputs @ 0.5A) horizontal or vertical
Surge Current 2A for 50ms, repeatable every 2 seconds
Keyswitch Position 2
Fusing
1
SAN-O MQ4-800mA
General Specifications
External dc Power
Supply Voltage
Voltage Range
Supply Current
24V dc nominal
19.2 to 31.2V dc (includes 5% ac ripple)
49mA @ 24V dc (38mA to 65mA)
Dimensions HxWxD 46mm x 94mm x 53mm (1.8in x 3.7 in 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
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
Publication
Installation Instructions 1794-5.3
Agency Certification
1 Module outputs are not fused. Fusing of outputs is recommended. If external fusing is
desired, you must provide external fusing.
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