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- 1794-IB32
- ControlNet Flex I/O Adapter Module
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- 94 × 94 × 69 mm
- 2kg
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1794-IB32 FLEX I/O 32-Point DC Input Module – Detailed Technical Overview
1. Product Introduction
The 1794-IB32 is a high-density 32-channel 24V DC digital input module designed for distributed industrial automation systems based on the FLEX I/O architecture. It is used to collect ON/OFF status signals from field devices and transmit them to a PLC or controller through a modular backplane system.
This module is designed for applications requiring a large number of discrete inputs in a compact footprint, reducing cabinet space and wiring complexity.
It belongs to a modular I/O system where each input channel independently monitors field devices such as sensors, switches, and relay contacts.
The module is widely used in medium to large automation systems where signal density and reliability are important design requirements.
2. Product Features
- 32-channel 24V DC digital inputs
- Sinking input configuration
- High-density I/O design
- LED status indicators for each channel
- Modular plug-in architecture
- DIN rail installation
- Compatible with FLEX I/O terminal bases
- Stable industrial signal acquisition
- Reduced wiring complexity
- Flexible distributed control integration
3. Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1794-IB32 |
| Product Type | DC digital input module |
| Series | FLEX I/O 1794 Series |
| Input Channels | 32 channels |
| Input Type | 24V DC sinking |
| Input Voltage Range | 19.2–31.2V DC |
| Nominal Input Voltage | 24V DC |
| ON-State Current | ~2–6 mA per channel |
| Input Impedance | ~22.2 kΩ |
| FlexBus Current | ~25–30 mA |
| Power Dissipation | ~6.0–6.1 W |
| Thermal Dissipation | ~20.47 BTU/hr |
| Isolation Voltage | 50V continuous (basic insulation) |
| Channel Isolation | No isolation between channels |
| Indicator Lights | 32 LED status indicators |
| Mounting Type | DIN rail |
| Terminal Base | TB32 / TB32S compatible |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Vibration Resistance | 5g (10–500 Hz) |
| Shock Resistance | 30g |
| IP Rating | IP20 |
| Dimensions | 94 × 94 × 69 mm |
| Weight | 2.0 kg |
4. Product Function Description
The 1794-IB32 operates as a high-channel-density digital input acquisition module within a distributed automation system.
Each of the 32 channels monitors the state of field devices such as sensors, switches, and relay contacts. When a 24V DC signal is detected, the module converts it into a digital signal and sends it to the PLC system through the FLEX I/O backplane.
The module does not execute control logic but serves as an interface between field wiring and the control system.
Its high channel density makes it suitable for applications where large numbers of discrete signals must be collected efficiently.
5. Product Applications
The 1794-IB32 is used in industrial environments requiring large-scale digital signal monitoring.
Typical Applications
- Large factory automation systems
- Automotive production lines
- Conveyor and sorting systems
- Packaging and filling machines
- Process control systems
- Material handling systems
- Power distribution monitoring systems
- Water treatment plants
- Building automation systems
- Industrial machine control panels
Typical Field Devices
- Proximity sensors
- Limit switches
- Push buttons
- Relay contacts
- Position sensors
- Alarm contacts
6. Product Advantages
6.1 Ultra-High Input Density
32 channels in a single module significantly reduce rack space requirements.
6.2 Reduced Wiring Complexity
Fewer modules mean simplified panel wiring and lower installation cost.
6.3 Stable Industrial Operation
Designed for harsh electrical environments with strong noise immunity.
6.4 Clear Diagnostics
Each channel has an LED indicator for fast troubleshooting.
6.5 Modular Architecture
Compatible with FLEX I/O system for flexible expansion.
6.6 Maintenance Efficiency
Hot-swappable design allows fast replacement without system shutdown.
6.7 System Scalability
Easily integrated into large distributed I/O networks.
7. Brand Overview
This product belongs to a globally recognized industrial automation technology provider specializing in:
- PLC control systems
- Distributed I/O modules
- Industrial communication networks
- Motion and safety systems
- Process automation solutions
Its products are widely used in automotive, energy, oil and gas, manufacturing, and infrastructure industries due to reliability, scalability, and long-term industrial support.
8. Product Series Information
Series Name
FLEX I/O 1794 Series
Series Type
Distributed modular I/O system
Key Characteristics
- Modular expansion system
- DIN rail mounting
- Hot-swappable modules
- Wide range of digital/analog modules
- High-density I/O capability
- Industrial network compatibility
- Flexible configuration options
The 1794-IB32 is the highest-density standard DC input module in this series.
9. Recommended Related Models (Same Series or Similar)
| Model | Product Type | Function | Dimensions | Weight (kg) | Key Parameters |
|---|---|---|---|---|---|
| 1794-IB32 | DC input module | 32-channel input | 94 × 94 × 69 mm | 2.0 kg | High-density input |
| 1794-IB16 | DC input module | 16-channel input | 94 × 94 × 69 mm | 0.11 kg | Standard density |
| 1794-IB8 | DC input module | 8-channel input | 94 × 94 × 69 mm | 0.10 kg | Compact module |
| 1794-OB16 | DC output module | 16-channel output | 94 × 94 × 69 mm | 0.30 kg | Sourcing output |
| 1794-TB32 | Terminal base | 32-point base | 94 × 94 × 69 mm | 0.19 kg | Wiring base |
10. Recommended Popular Models from Same Brand
| Model | Product Type | Function | Dimensions | Weight (kg) | Key Parameters |
|---|---|---|---|---|---|
| 1756-L81E | PLC controller | ControlLogix CPU | 145 × 175 × 52 mm | 0.92 kg | High-performance controller |
| 1769-L33ER | Compact PLC | CompactLogix system | 118 × 87 × 87 mm | 0.60 kg | Integrated Ethernet |
| 1734-AENTR | Ethernet adapter | POINT I/O network module | 75 × 75 × 55 mm | 0.18 kg | Distributed I/O communication |
| 2711P-T10C4D8 | HMI panel | Operator interface | 271 × 212 × 60 mm | 1.80 kg | Touchscreen display |
| 20-COMM-E | Drive communication module | Ethernet interface | 140 × 95 × 30 mm | 0.22 kg | Industrial network module |
11. Installation Notes
- Confirm TB32 terminal base compatibility before installation
- Ensure proper grounding in control cabinet
- Separate signal wiring from power cables
- Maintain stable 24V DC supply
- Avoid mechanical stress on connectors
- Secure DIN rail mounting properly
12. Maintenance Recommendations
- Inspect LED indicators regularly
- Check wiring tightness
- Monitor signal stability
- Keep enclosure clean and dry
- Replace module if abnormal operation occurs
13. Summary
The 1794-IB32 is a high-density 32-channel DC input module designed for industrial automation systems requiring large-scale discrete signal acquisition. Its compact structure, stable performance, and modular architecture make it suitable for complex control systems.
It is especially effective in applications where wiring reduction, space optimization, and high input density are critical requirements.