Replacing Yokogawa AAI835: Wiring and Barrier Checks Before Swap
Before replacing a Yokogawa AAI835, verify the 4-in/4-out channel map, power-loss loop behavior, barrier type, output load, cable, and redundancy.
Manufacturer: Allen-Bradley
Product No.: 1746-IV8
Country of origin:United States
Product Type: DC Input Module
Payment: T/T, Western Union
Weight: 220g
Dimensions: 11.8 x 3.5 x 14.5 cm
Shipping port: Xiamen
Warranty: 12 months
The Allen-Bradley 1746-IV8 is a modular DC input module designed for the SLC 500 programmable controller platform. It functions as an interface between field-side digital devices and the processor backplane, converting 24VDC current sourcing input signals into internal logic levels for execution within the control program. This discrete I/O module occupies a single slot in the SLC 500 chassis, integrating seamlessly into local or distributed I/O configurations.
The module features eight input points arranged in a single group, providing high-density signal acquisition for industrial automation tasks. Front-panel LED indicators display the real-time status of each individual I/O point, allowing maintenance personnel to quickly diagnose field wiring and signal state. Self-lifting pressure plate terminals accommodate secure wiring connections, supporting up to two 14 AWG wires per terminal to ensure robust mechanical and electrical integrity in high-vibration environments.
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Module Type | DC Input Module (Current Sourcing) |
| Product Series | SLC 500 (1746) |
| Number of Inputs | 8 points (1 group) |
| Voltage Category | 24VDC Sourcing |
| Operating Voltage Range | 10 to 30VDC |
| Nominal Input Current | 8mA at 24VDC |
| Maximum Off-State Voltage | 5VDC |
| Maximum Off-State Current | 1mA |
| Signal Delay | 8ms max ON / 8ms max OFF |
| Backplane Current Draw | 50mA at 5VDC, 0mA at 24VDC |
| Slot Width | 1 single slot |
| Wiring Terminal Type | Self-lifting pressure plate (accepts up to two 14 AWG wires) |
| Country of Origin | United States |
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| Country of origin |
United States
|