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- 1794-OB16
- ControlNet Flex I/O Adapter Module
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- 94 mm × 136 mm × 66 mm
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FLEX I/O 1794-OB16 Technical Profile
1. Product Overview
The 1794-OB16 is a 16-point industrial DC digital output module designed for distributed automation systems. It provides reliable switching control for 24V DC field devices such as relays, solenoids, contactors, indicator lamps, and other actuators.
It is part of a modular remote I/O platform that allows distributed signal control close to the field, reducing wiring complexity and improving system scalability.
This module is widely used in machine automation and process control systems where multiple DC outputs are required in a compact and robust design.
2. Brand and Product Classification
- Brand: Industrial automation control equipment manufacturer
- Product Type: DC Digital Output Module
- Series: FLEX I/O 1794 Series
- System Type: Distributed Remote I/O system
- Output Type: 24V DC sourcing output
- Channel Count: 16 channels
- Mounting Type: DIN rail modular terminal base
- Module Category: Discrete output module
3. Product Introduction
The 1794-OB16 module is designed to convert control signals from a PLC system into physical 24V DC outputs that drive industrial field devices.
Each channel operates independently, allowing simultaneous control of multiple devices such as actuators, valves, and signal indicators.
The module connects to a FLEX I/O backplane system and communicates through a network adapter, enabling distributed control across large industrial systems.
It also includes LED indicators for each channel, providing real-time status monitoring for diagnostics and maintenance.
4. Key Technical Parameters
4.1 Electrical Parameters
| Parameter | Specification |
|---|---|
| Output Channels | 16 DC outputs |
| Output Type | Sourcing (24V DC) |
| Nominal Voltage | 24V DC |
| Operating Voltage Range | 10 – 31.2V DC |
| Maximum Current per Channel | 0.5 A |
| Maximum Current per Module | 8 A total |
| Minimum Load Current | 1.0 mA |
| Output Surge Current | 2 A for 50 ms (repeatable every 2 s) |
| Off-State Leakage Current | ≤ 0.5 mA |
| Voltage Drop (On-state) | ≤ 0.5 V DC |
| Power Dissipation | approx. 5.3 W |
| Isolation Voltage | 50V continuous / up to 850V tested |
4.2 Functional Parameters
| Parameter | Specification |
|---|---|
| Load Type | DC inductive / resistive loads |
| Controlled Devices | Relays, solenoids, lamps, contactors |
| Switching Type | Electronic solid-state switching |
| Diagnostics | LED indicator per channel |
| Channel Protection | No internal short-circuit protection |
4.3 Environmental Parameters
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to 55 °C |
| Storage Temperature | -40 to 85 °C |
| Humidity | 5% to 95% non-condensing |
| Vibration Resistance | Industrial standard (IEC level) |
| Shock Resistance | up to 30 g |
| Protection Class | IP20 industrial enclosure |
4.4 Mechanical Parameters
| Parameter | Specification |
|---|---|
| Width | 94 mm |
| Height | 94 mm |
| Depth | 69 mm |
| Weight | approx. 0.078–3.0 kg (varies by configuration and source packaging) |
| Mounting Type | DIN rail / terminal base system |
| Wiring Method | Screw terminal base |
| Housing Type | Compact industrial module housing |
5. Product Applications
The 1794-OB16 is widely used in industrial automation environments requiring multiple DC output control points:
- Production line automation systems
- Conveyor and logistics equipment
- Packaging machinery
- Pump and motor control systems
- Solenoid valve actuation systems
- Industrial alarm and signal systems
- HVAC control systems
- Process automation plants
- Machine interlock control systems
- Factory distributed I/O networks
It is especially suitable for systems requiring multiple DC outputs in a compact distributed architecture.
6. Product Advantages
6.1 High Channel Density
16 output channels allow efficient control of multiple field devices from a single module.
6.2 Stable DC Switching Performance
Designed for reliable 24V DC load switching in industrial environments.
6.3 Distributed Control Architecture
Reduces wiring complexity by placing output control closer to field devices.
6.4 Channel-Level Diagnostics
Each output channel includes LED indicators for fast troubleshooting.
6.5 Modular Maintenance
Easy replacement without redesigning the full system.
6.6 Industrial Rugged Design
Built for vibration, temperature variation, and electrical noise environments.
6.7 Flexible Load Support
Supports both resistive and inductive DC loads.
7. Product Series Overview
- Series Name: FLEX I/O 1794 Series
- System Type: Distributed industrial automation platform
- Core Functions:
- Digital input/output expansion
- Remote field device control
- Modular system integration
- Key Features:
- Scalable architecture
- Mixed I/O capability (digital, analog, specialty modules)
- Industrial-grade durability
- Flexible configuration
- Decentralized control support
8. Recommended Related Models (Same Series or Similar)
| Model | Description | Function | Voltage | Weight (kg) |
|---|---|---|---|---|
| 1794-IV16 | 16-point DC input module | Digital input | 24V DC | 0.09 |
| 1794-OA16 | 16-point AC output module | AC switching output | 120V AC | 0.11 |
| 1794-OB32P | 32-point protected output module | High-density DC output | 24V DC | 0.28 |
| 1794-IB32 | 32-point digital input module | High-density input | 24V DC | 0.25 |
| 1794-IE8XT | Extended analog input module | Analog measurement | 4–20 mA | 0.20 |
9. Popular Models from Same System Ecosystem
| Model | Description | Function Type | Voltage | Weight (kg) |
|---|---|---|---|---|
| 1794-IB16 | Standard digital input module | Input signal | 24V DC | 0.15 |
| 1794-OB16 | Standard digital output module | Output control | 24V DC | 0.16 |
| 1794-IE8 | Analog input module | Measurement input | 4–20 mA | 0.18 |
| 1794-OF8 | Analog output module | Signal output | 4–20 mA | 0.19 |
| 1794-AENTR | Ethernet communication adapter | Network interface | 24V DC | 0.22 |
10. Summary
The 1794-OB16 is a reliable industrial DC output module designed for distributed automation systems requiring multi-point 24V DC load control.
Its key strengths include:
- 16-channel DC output capability
- Stable industrial-grade switching performance
- Compact modular design
- Clear channel diagnostics
- Easy system integration
It is widely used in industrial environments where flexible, scalable, and reliable DC output control is required.