18 FLEX I/O Digital DC Output Modules
Publication 1794-IN094D-EN-P - July 2018
Specifications – 1794-OB16 and 1794-OB16P
Attribute 1794-OB16 1794-OB16P
Number of outputs 16, current, sourcing
Recommended terminal base unit 1794-TB2,1794-TB3,1794-TB3S, 1794-TB3K, 1794-TB3SK
On-state voltage, output min 10V DC
On-state voltage, output nom 24V DC
On-state voltage, output max 31.2V DC (see Derating Curve for 1794-OB16P
)
Output current rating 8.0 A (16 outputs @ 0.5 A)
On-state current, output, min 1.0 mA per channel
On-state current, output, max 500 mA per channel
On-state voltage drop, max 0.5V DC
Surge current 2 A for 50 ms, repeatable every 2
seconds
1.5 A for 50 ms, repeatable
every 2 seconds
Off-state leakage current, max 0.5 mA
Isolation voltage 50V (continuous), Basic Insulation
Type
Tested at 850V DC for 1 s between
user and system
No isolation between individual
channels
50V (continuous), Basic
Insulation Type
Type tested at 2121V DC for 60
s, between field side and
system
No isolation between
individual channels
Output signal delay
(1)
Off to On
On to Off
(1)
Delay time is the time from the receipt of an output on or off command to the output actually turning on or off.
0.5 ms
1.0 ms
FlexBus current 80 mA @ 5V DC 60 mA @ 5V DC
Power dissipation, max 5.3 W @ 31.2V DC 5.0 W @ 31.2V DC
Thermal dissipation, max 18.1 BTU/hr @ 31.2V DC 17.0 BTU/hr @ 31.2V DC
Fusing Module outputs are not fused.
Fusing is recommended. If fusing is
desired, you must provide external
fusing. Use SAN-O
MQ4-800 mA fuses.
Outputs are electronically
protected.
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