Overview
The Allen-Bradley 1769-IQ32T is a high-density discrete input module designed for CompactLogix and MicroLogix 1500 automation systems. With 32 input channels organized into four isolated groups of eight inputs each, this module supports flexible sink or source wiring configurations for industrial control applications. The 1769-IQ32T provides 1500V galvanic isolation between field devices and the controller, ensuring signal integrity in electromagnetically noisy factory environments.
Key Features
- 32 × 24VDC digital input points in single-wide module format
- Four isolated groups of eight inputs—independent sink/source wiring per group
- 1500V optical isolation protecting backplane and CPU from field-side voltage spikes
- 8 ms on/off filtering for debounce and signal conditioning
- 40-pin female connector (1746-N3 assembly) for organized field termination
- Operates 20.4–26.4V DC at 60°C; minimum on-state 19V DC
- Compatible with Studio 5000 Logix Designer and legacy RSLogix platforms
Technical Specifications
- Input Channels: 32 points (four groups of eight)
- Input Voltage Range: 20.4–26.4V DC @ 60°C (140°F)
- Minimum On-State Voltage: 19V DC
- Maximum Off-State Voltage: 5V DC
- Maximum Inrush Current: 5 mA
- Bus Current Draw: 170 mA @ 5.1V
- Heat Dissipation: 4.6 W (typical)
- Signal Filtering: 8 ms on/off delay
- Isolation: 1500V galvanic isolation (optocoupler)
- Connector: 40-pin female DB connector (1746-N3)
- Operating Temperature: 0–60°C (32–140°F)
- Storage Temperature: –40–+85°C (–40–+185°F)
- Mounting: DIN rail or direct panel installation
- Dimensions: 8 × 8 × 5 inches
- Weight: 2 lbs (approximately 900 g)
- Certifications: IEC 60068-2 environmental; Type 1+ IEC input compatibility
- Series: CompactLogix 1769 Compact I/O modules
Typical Applications
The 1769-IQ32T is commonly deployed in:
- Machine automation and motion control systems requiring discrete binary inputs (proximity sensors, limit switches, emergency stops)
- Manufacturing process control with high-density sensor arrays
- Assembly line interlocks and safety circuits
- HVAC and building automation integrated with CompactLogix controllers
- Material handling and conveyor control networks
- Test and measurement systems requiring synchronized parallel input capture
Compatibility & Replacements
Compatible With
- CompactLogix 1769 controllers (all models)
- MicroLogix 1500 (via 1769 compact I/O backplane)
- Studio 5000 Logix Designer engineering environment
- RSLogix 500 and RSLogix Micro (legacy programming)
- EtherNet/IP industrial network protocol
- Allen-Bradley 1492 prefabricated wiring systems
Replaces / Drop-In Replacement For
- 1769-IQ32 (earlier variant; verify pinout compatibility with integrator)
- Select legacy discrete input terminal blocks in older CompactLogix configurations
- Prior-generation 1769 series input modules when higher density required
Works With
- 1769-RTBN18 replacement terminal block for field wiring termination
- 1746-N3 40-pin connector (integrated; standard with module)
- 1769 Compact I/O backplane and DIN rail mounting systems
- EtherNet/IP messaging and tag-based architecture in Studio 5000
- CompactLogix Local I/O and remote I/O add-on instruction libraries
- Third-party industrial Ethernet gateways (PROFINET, MODBUS TCP via gateway)
