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Allen-Bradley

Allen Bradley 1769-IA8I Compactlogix 8-Point D/I Module

SKU 1769-IA8I

  • Part Number:

    1769-IA8I

  • Manufacturer:

    Allen-Bradley

  • Condition:

    Brand New & in Stock

  • Product Type:

    8-Point D/I Module

  • Origin:

    USA

  • Shipping Detail:

    Fedex and UPS etc

  • Warranty:

    12 months

Frequently inquire Together

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Allen Bradley 1769‑IA8I CompactLogix Digital Input Module

The Allen Bradley 1769‑IA8I, also cataloged as the 1769‑IA8I digital input module, operates as a dedicated hardware component for AC signal acquisition within CompactLogix and 1769 I/O networks.

Hardware Specifications

Parameter Specification
Model 1769‑IA8I
Brand Allen Bradley
Origin Not specified
Weight 270 g
Dimensions 118 x 35 x 87 mm
Operating Temp Not specified
Power Consumption 90 mA @ 5.1 V
Input Type 8 individually isolated AC inputs
Voltage Category 100/120 V AC
Operating Voltage Range 79–132 V AC
Frequency Range 47–63 Hz
Input Delay (On/Off) 20 ms / 20 ms
Off‑state Voltage (Max) 20 V AC
Off‑state Current (Max) 2.5 mA
On‑state Voltage (Min) 79 V AC
On‑state Current 5 mA @ 74 V AC (min), 12 mA @ 120 V AC (max)
Inrush Current (Max) 250 mA
Input Impedance 12 kΩ @ 50 Hz, 10 kΩ @ 60 Hz
Isolation Voltage 1517 V AC or 2145 V DC for 1 s
Working Voltage 132 V AC (IEC Class II reinforced insulation)
Mounting DIN rail or panel mount
Slot Width 1
Power Supply Compatibility 1769‑PA2, 1769‑PB2, 1769‑PA4, 1769‑PB4
Distance Rating 8 modules
Terminal Screw Torque 0.68 N·m
Retaining Screw Torque 0.46 N·m
Wire Size 22–14 AWG solid, 22–16 AWG stranded
Wire Type Cu‑90 deg C
Replacement Terminal Block 1769‑RTBN18
Replacement Door Label 1769‑RL1
Replacement Door 1769‑RD
Enclosure Type Rating None (open‑style)

Backplane Bus Communication Velocity and Firmware Flash Compatibility

Within CompactLogix architectures, the 1769‑IA8I adheres to deterministic backplane scheduling rules that govern input update timing. Each AC input channel is sampled according to fixed bus cycles, ensuring predictable propagation of state changes to the controller scan. Firmware flash compatibility is maintained through revision‑matched profiles, preventing initialization faults during module power‑up. I/O density scaling is supported through the 1769 platform’s distance rating, allowing up to eight modules from the power supply without degrading bus timing or input latching behavior.

Frequently Asked Questions

Q: Can the 1769‑IA8I be hot‑swapped? A: No. The module must be inserted or removed only when the CompactLogix or 1769 I/O system is de‑energized to avoid undefined input states.

Q: Does each input channel have electrical isolation? A: Yes. All eight input points are individually isolated, allowing independent AC signal acquisition.

Q: Are firmware mismatches possible during installation? A: Yes. The controller requires a matching module profile; mismatched firmware may prevent correct initialization or input scaling.

Field Installation Guidelines

  • Ensure the system is de‑energized before installing or removing the module.
  • Route AC input wiring separately from low‑level analog or communication conductors to reduce noise coupling.
  • Maintain proper torque on terminal and retaining screws to ensure mechanical stability.
  • Use copper conductors rated at 90 deg C and verify insulation stripping lengths before termination.
  • Confirm the module’s placement within the eight‑module distance rating from the power supply.
  • Validate input state transitions after commissioning to ensure correct on/off delay behavior.
Related Tags:
8-Point D/I Module Allen-Bradley CompactLogix
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What is the warranty period?
We offer a standard one-year warranty for all new and original items.
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We accept 100% T/T (Telegraphic Transfer) before shipping. For items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. If you have an agent in China, please contact us for RMB transfer.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
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We primarily utilize carriers such as FedEx, DHL, UPS, BRE, etc. If you have an account with any of these carriers, you can arrange the shipping yourself. Additionally, we offer free shipping to China freight forwarders.
What is our delivery time?
Typically, delivery takes around 1-3 days after receiving the advance payment. For items with a quoted lead time, delivery will occur as per the specified lead time.
How do we package the goods?
Our packaging process involves multiple layers of protection. Initially, the product is placed in its original box, sealed with a label. Then, we add a layer of bubble wrap to safeguard against collisions during transportation. Finally, all products are securely packed in sturdy boxes for further protection.
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