Specifications
Publication 1794-SG002D-EN-P - May 2012
16 Select FLEX I/O Modules
120V AC: Input/Output and Isolated Input/Output, 8 and 16 point
220V AC: Input/Output, 8 point
24V DC: Input/Output/Combination, Sink/Source, Protected,
Electronically Fused, Diagnostic, 8, 16, and 32 point
48V DC: Sink Input/Source Output, 16 point
Relay: Sink/Source, 8 point
• Isolated inputs and outputs can be used in applications such as motor
control centers where individual control transformers are used.
• Protected outputs (P) have electronic protection which acts to shut the
output down in reaction to a short circuit, overload, or over-temperature
condition.
Recovery from shutdown is automatic upon removal of the output fault.
No fault status is provided to the processor.
• Electronic Fused (EP) module acts to open the output when a fault occurs.
The fuse can be reset by operating a pushbutton, via software, or by cycling
the input power. Fault status is provided to the processor.
• Diagnostic (D) modules detect, indicate, and report to the processor the
following faults:
open input or output field devices or wiring
shorted output field devices
shorted input or output wiring
reverse polarity of user supply wiring
• Selectable input filter times from <1 to 60 ms.
• LED for each channel indicating status of:
corresponding input device
output signal
Digital I/O Module Summary
Catalog Number Inputs Outputs Terminal Base Unit Electrical Range Module Type
AC Modules
1794-IA8 8 — 1794-TBN, 1794-TB2, 1794-TB3,
1794-TB3S, 1794-TBKD, 1794-TB3K,
1794-TB3SK, 1794-TBNK
120V AC Nonisolated inputs
1794-IA8I Isolated inputs
1794-IA16 16 1794-TB3, 1794-TB3S, 1794-TBN
(1)
,
1794-TB3K, 1794-TB3SK, 1794-TBNK
Nonisolated inputs
1794-IM8 8 — 1794-TBN, 1794-TBNK 240V AC
1794-IM16 16
1794-OA8 — 8 1794-TBNF, 1794-TB2, 1794-TB3,
1794-TB3S, 1794-TBN, 1794-TBKD,
1794-TBNFK, 1794-TB3K,
1794-TB3SK, 1794-TBNK
120V AC Nonisolated inputs
1794-OA8I Isolated outputs
1794-OA16 16 1794-TB3, 1794-TB2,
1794-TB3S,1794-TB3K 1794-TB3SK,
1794-TBN
(1)
, 1794-TBKD, 1794-TBNK
120V AC Nonisolated outputs
1794-OM8 8 1794-TBNF, 1794-TBN, 1794-TBNFK,
1794-TBNK
240V AC
1794-OM16 16