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1794-IH16 Allen-Bradley
Original price
$627.00
-
Original price
$1,372.25
Original price
$627.00
$627.00
-
$1,372.25
Current price
$627.00
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The Allen-Bradley 1794-IH16 is a Flex I/O digital input module with sixteen sinking inputs rated for 125 V DC nominal (range 90 to 146 V DC). It belongs to Rockwell Automation's Flex I/O platform and functions as a distributed I/O module that connects high-voltage DC field inputs to a Flexbus backplane. It is typically used in industrial control systems that require 125 V DC logic, such as legacy process controls or interface of 125 V DC systems to distributed I/O racks.
Best Suited For
- Legacy 125 V DC control systems
- Distributed I/O installations with DC field voltages
- Flex I/O rack integration via Flexbus
- Applications requiring isolation between field and system
Point count
16 sinking inputs
Nominal on-state voltage
125 V DC
Flexbus current
80 mA @ 5 V DC
Power dissipation, max
6 W @ 146 V DC
Operating temperature
0…55 °C (32…131 °F)
Technical Specifications
I/O & Electrical
Number of inputs
16 sinking inputs
On-state voltage (min/nom/max)
90 V DC / 125 V DC / 146 V DC
On-state current (min/nom/max)
1.0 mA / 2.0 mA @ 125 V DC / 3.0 mA
Off-state voltage, max
20 V DC
Off-state current, max
0.8 mA
Input impedance
60 kΩ
Isolation voltage (field/system)
250 V (continuous), basic insulation; tested 1706 V DC for 60 s
Communication & Power
Flexbus current
80 mA @ 5 V DC
Physical & Environmental
Power dissipation, max
6 W @ 146 V DC
Thermal dissipation, max
20.47 BTU/hr @ 146 V DC
Operating temperature
0…55 °C (32…131 °F)
Certifications
UL Listed HazardousUL ListedRegistro Italiano Navale
Certified UL Listed Hazardous, UL Listed, Registro Italiano Navale (as of 2026-04-28).
