16
FLEX I/O AC Digital Input Modules
Publication 1794-IN102C-EN-P - July 2015
Specifications
Specifications – 1794-IA8, 1794-IA8I
Attribute
1794-IA8
1794-IA8I
Number of inputs
8, nonisolated
8, isolated
Recommended terminal base unit
1794-TBN, 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBKD,
1794-TB3K, 1794-TB3SK, 1794-TBNK
On-state voltage, min
65V AC
On-state voltage, nom
120V AC
On-state voltage, max
132V AC
On-state current, min
(1)
(1)
AC inputs compatible with proximity switches with leakage ratings of I
leak
< 2.5 mA and I
on
minimum = 5 mA
7.1 mA
On-state current, max
14.32 mA
Off-state voltage, max
43V AC
Off-state current, min
2.9 mA
Nominal input impedance
10.6 k
Ω
Nominal input current
12 mA @ 120V AC
Isolation voltage
120V (continuous), Basic
Insulation Type
Type tested @ 1250V AC for
60 s, between field side and
system
No isolation between
individual channels
120V (continuous), Basic
Insulation Type
Type tested @ 1240V AC for
60 s, between field side and
system
Isolation between individual
channels.
Input filter time
Refer to Input Filter Time table
FlexBus current
30 mA @ 5V DC
Power dissipation, max
4.5 W @ 132V AC
Thermal dissipation, max
15.3 BTU/hr @ 132V AC
Specifications – 1794-IA16
Attribute
Value
Number of inputs
16, nonisolated
Module location
1794-TB3, 1794-TB3S, 1794-TBN
(2)
, 1794-TB3K, 1794-TB3SK,
1794-TBNK
On-state voltage, min
74V AC
