20
FLEX I/O Digital DC Output Modules
Publication 1794-IN094C-EN-P - July 2015
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 MQ4-800mA fuses.
Outputs are electronically
protected.