Specifications

Publication 1794-SG002D-EN-P - May 2012
24 Select FLEX I/O Modules
1794-IB16 Derating Curve
The area within the curve represents the safe operating range for the module
under various conditions of user supplied 24V DC supply voltages and ambient
temperatures.
= Normal mounting safe operating range included
= Other mounting positions (including inverted horizontal, vertical) safe
operating range
Dimensions (HxWxD),
approx
46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.)
94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed
Isolation voltage 50V (continuous), Basic Insulation Type, between field side and system
No isolation between individual channels
1794-IB8, 1794-IB16XT:
Type tested at 850V DC for 60 s
1794-IV16:
Type tested at 700V DC for 60 s
1794-IB32: Routine tested at 2121V DC for 2 s
1794-IV32: Type tested at 707V DC for 60 s
All other modules:
Type tested at 707V DC for 60 s
Tested at
1900V DC for
1 s, I/O to
system
No isolation
between
individual
channels
50V
(continuous),
Basic
Insulation
Type,
between field
side and
system
No isolation
between
individual
channels
Type tested at
707V DC for
60 s
250V
(continuous),
Basic
Insulation
Type, between
field side and
system
Type tested at
1706V DC for
60 s, between
field side and
system
No isolation
between
individual
channels
(1) Power dissipation – 1794-IB16: 6.1 W @ 31.2V DC; 1794-IB16XT: 2 W @ 31.2V DC
(2) Thermal dissipation – 1794-IB16: 20.8 BTU/hr at 31.2V DC; 1794-IB16XT: 9.2 BTU/hr @ 31.2V DC
Digital DC Input Comparison
Specification 1794-IB8,
1794-IB16,
1794-IB16XT
1794-IV16 1794-IB32 1794-IV32 1794-IC16 1794-IG16 1794-IH16
IMPORTANT
• Do not put the 1794-IB8 module next to an output module in 8-point
compact addressing with the 1794-ASB2/C or 1794-ASB/D.
• Modules have a yellow status indicator for each channel. These
indicators are driven from the customer field-side input device.
Ambient Temperature °C
V
in
On-State
Voltage
(V DC)