Allen-Bradley 1769-IQ32T 32-Point 24VDC Sinking Input Module
Manufacturer: Allen Bradley
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Part Number: 1769-IQ32T
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1769-IQ32T Compact I/O Module
The Allen-Bradley 1769-IQ32T serves as the primary 1769-IQ32T Digital Input Modules utilized to execute discrete signal acquisition across CompactLogix and MicroLogix 1500 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-IQ32T |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Weight | 0.20 kg (0.45 lbs) |
| Dimensions | 132.00 mm x 52.50 mm x 118.00 mm |
| Operating Temp | 0 deg C to +60 deg C |
| Power Consumption | 4.13 W max |
| Number of Inputs | 32 inputs (sinking interface) |
| Input Voltage Range | 10-30 VDC (Nominal 24 VDC) |
| Input Current | ~8 mA per channel at 24 VDC |
| Backplane Current Draw | 250 mA at 5 VDC / 120 mA at 24 VDC |
| Isolation Voltage | 1500 V between input circuits and backplane bus |
| Storage Temp | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% RH, non-condensing |
| System Compatibility | CompactLogix (1768 / 1769 series), MicroLogix 1500 |
I/O Density Scaling and Backplane Bus Control
The hardware design prioritizes I/O density scaling by packing 32 sinking input points within a singular chassis slot footprint, optimizing physical rail allocations. Internal registers handle the high-density signal matrix by routing active states straight to the local processor via the backplane bus communication velocity channels. This architecture maintains deterministic scanning synchronization with the master CPU while ensuring the optocoupler circuits enforce a 1500 V isolation boundary, preventing field-side voltage spikes from disrupting internal backplane logic operations.
Frequently Asked Questions
Q: Does the 1769-IQ32T module support online insertion and removal (RIUP) while the local backplane is powered?
A: No. The 1769 architecture does not permit hot-swapping. Operators must completely isolate power from the local chassis assembly before unseating or installing modules to prevent memory corruption or hardware degradation.
Q: How should engineers manage the thermal load when multiple 32-point high-density modules are placed adjacent to each other?
A: Engineers must calculate the total backplane current draw against the power supply limits and maintain explicit clear spacing around the module layout to facilitate steady convective airflow, ensuring ambient conditions do not exceed the 60 deg C operational ceiling.
Field Installation Guidelines
- Module Attachment: Mount the component firmly onto a standard 35 mm symmetric DIN rail or screw it directly onto a grounded internal subpanel. Engage the integrated bus levers to lock the module backplane connections together with neighboring chassis hardware.
- Field Signal Wiring: Route 24 VDC source sensor lines straight to the designated input terminal block. Ensure all low-voltage discrete signal wires run separately from high-current AC power wiring conduits to minimize inductive noise injection.
- Shield Grounding Steps: Connect external sensor cable shields to a dedicated, low-impedance functional earth grounding bar inside the enclosure panel, bypassing standard terminal frames to maintain structural isolation.
- Spacing Boundaries: Leave a physical clear space zone of at least 50 mm above and below the module assembly housing to support passive thermal dissipation under continuous multi-channel load conditions.