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-ITV16
Country of origin:United States
Product Type: PLC Input Module
Payment: T/T, Western Union
Weight: 350g
Dimensions: 14.5 x 3.5 x 11.0 cm
Shipping port: Xiamen
Warranty: 12 months
The Allen-Bradley 1746-ITV16 is a 16-point DC sourcing discrete input module designed for the Allen-Bradley SLC 500 modular hardware platform. Engineered for time-critical industrial control applications, this module provides fast-response digital signal processing to interface high-speed field sensors, limit switches, and pushbuttons directly with the processor backplane. It accepts 24VDC signals, converting external industrial control signals into internal logic data utilized by the SLC 500 processor.
Occupying a single slot in the SLC 500 chassis, the 1746-ITV16 features integrated LED status indicators on the front panel for real-time visual monitoring of individual input points. The module supports flexible field wiring configurations, accommodating direct screw termination with self-lifting pressure plates or streamlined pre-wired interposing connection systems via Bulletin 1492 interface modules and cables. Optical isolation between the field side and the backplane ensures robust noise immunity and electrical protection for the control system.
| Parameter | Specification |
|---|---|
| Module Type | DC Sourcing Input Module |
| Number of Inputs | 16 points |
| Nominal Voltage | 24VDC |
| Operating Voltage Range | 10 to 30VDC |
| Backplane Current Draw (5VDC) | 85 mA |
| Backplane Current Draw (24VDC) | 0 mA |
| Nominal Input Current | 8 mA at 24VDC |
| Off-State Voltage Max | 5 VDC |
| Off-State Current Max | 1.5 mA |
| Signal Delay (ON) | 0.1 ms typical (0.3 ms max) |
| Signal Delay (OFF) | 0.25 ms typical (0.5 ms max) |
| Isolation Voltage | Tested at 500V DC for 1 min (optical/transformer) |
| Slot Width | Single slot |
| Country of Origin | United States |
Field wiring connections are made via the removable terminal block located on the front of the module. Each terminal features self-lifting pressure plates capable of securing one or two 14 AWG (2mm squared) wires. For reduced installation time, the module can interface with remote terminal blocks using pre-assembled Bulletin 1492 wiring cables.
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Returns & Warranty
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| Country of origin |
United States
|