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- 14.5 × 2.2 × 10.5 cm
- 0.45kg
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1756-OF4 Detailed Product Overview
Product Introduction
The 1756-OF4 is a 4-channel analog output module designed for industrial automation systems requiring precise analog signal generation for process control, motion systems, and actuator regulation. It belongs to the ControlLogix modular automation platform and is widely used in applications where accurate voltage or current output signals are required for controlling field devices.
This module provides four analog output channels that can generate either voltage or current signals. It supports industrial standard ranges such as ±10V DC and 4–20 mA, making it suitable for driving devices like variable frequency drives (VFDs), control valves, dampers, and proportional actuators.
The module is installed in a ControlLogix chassis and integrates with PLC processors and communication modules to form a complete automation control system.
Brand Information
| Item | Description |
|---|---|
| Brand | Industrial Automation Brand |
| Product Platform | ControlLogix |
| Product Type | Analog Output Module |
| Main Function | Analog Signal Output (Voltage/Current) |
| Installation Method | Chassis Mount |
| Output Type | Voltage / Current Analog Output |
| Application Category | Industrial Automation |
| System Architecture | Modular PLC System |
Product Series Introduction
ControlLogix Series
The ControlLogix platform is a modular industrial automation system designed for high-performance control applications requiring flexibility, scalability, and integrated communication.
Core functions include:
- PLC logic processing
- Analog and digital I/O control
- Motion and process automation
- Industrial network communication
- System diagnostics and monitoring
Key characteristics:
- High-speed backplane architecture
- Modular expansion capability
- Strong industrial reliability
- Flexible control configuration
- Long service life design
- High system integration efficiency
The 1756-OF4 belongs to the analog output module family and is specifically designed for generating accurate analog signals in industrial environments.
It is widely used in:
- Process control systems
- Chemical and oil & gas industries
- Water treatment systems
- Packaging machinery
- Motion control systems
- HVAC automation
- General industrial automation
1756-OF4 Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-OF4 |
| Product Type | Analog Output Module |
| Series | ControlLogix |
| Number of Outputs | 4 Channels |
| Output Types | Voltage / Current |
| Output Voltage Range | -10V to +10V DC |
| Output Current Range | 4–20 mA |
| Resolution | 15-bit resolution |
| Voltage Resolution | ~320 µV/bit |
| Current Resolution | ~650 nA/bit |
| Isolation Type | Non-isolated (channel common) |
| Isolation Voltage | 250 V continuous (backplane isolation) |
| Backplane Current @ 5.1V DC | ~150 mA |
| Backplane Current @ 24V DC | ~120 mA |
| Power Dissipation | ~3.7–4.9 W |
| Thermal Dissipation | ~10.91 BTU/hr |
| Output Update Time | ~8–12 ms depending on mode |
| Settling Time | <2 ms to 95% final value |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Wiring Method | Removable Terminal Block (20-pin) |
| Dimensions | 14.5 × 2.2 × 10.5 cm |
| Weight kg（ ） | 0.45 kg |
Product Features
1. Dual Analog Output Modes
Supports both voltage (-10 to +10V) and current (4–20mA) outputs, allowing flexible integration with industrial devices.
2. High Precision Signal Generation
15-bit resolution ensures accurate analog signal control for sensitive industrial applications.
3. Fast Response Performance
Short settling time (<2 ms) enables stable and responsive control in dynamic systems.
4. Multi-Channel Output Capability
Four independent channels allow simultaneous control of multiple actuators or devices.
5. Stable Industrial Operation
Designed for continuous use in harsh industrial environments with electrical noise and temperature variations.
Product Advantages
High Signal Accuracy
High-resolution output ensures precise process control.
Flexible Output Types
Supports both voltage and current outputs for different field device requirements.
Reliable Industrial Performance
Stable operation under continuous load conditions.
Easy System Integration
Seamlessly integrates into ControlLogix architecture.
Fast Signal Response
Quick settling time improves system responsiveness.
Compact Design
Saves control cabinet space while maintaining functionality.
Main Applications
Process Control Systems
Used in regulating flow, pressure, and temperature systems.
Variable Frequency Drives (VFDs)
Provides analog speed reference signals.
Control Valves and Actuators
Drives proportional valves and dampers.
Water Treatment Systems
Used for flow and chemical dosing control.
HVAC Systems
Controls temperature and airflow regulation devices.
Industrial Automation
General analog signal output for machine control systems.
Industrial Performance Summary
| Capability | Benefit |
|---|---|
| 4 Analog Outputs | Multi-device control |
| High Resolution | Precise signal control |
| Fast Response | Improved system dynamics |
| Dual Signal Type | Flexible integration |
| Compact Design | Space saving |
| Stable Output | Reliable operation |
| PLC Integration | Easy system setup |
| Industrial Durability | Long service life |
Recommended Related Models (Same Series / Similar Function)
| Model | Type | Channels | Output Type | Dimensions | Weight kg（ ） | Feature |
|---|---|---|---|---|---|---|
| 1756-OF8 | Analog Output | 8 | Voltage/Current | 14.5 × 5.6 × 14.0 cm | 0.48 kg | Higher density output |
| 1756-OF6CI | Analog Output | 6 | Current isolated | 14.5 × 5.6 × 14.0 cm | 0.52 kg | Isolated current output |
| 1756-OF6VI | Analog Output | 6 | Voltage isolated | 14.5 × 5.6 × 14.0 cm | 0.50 kg | Voltage precision output |
| 1756-OF4H | High resolution output | 4 | Voltage/Current | 14.5 × 5.6 × 14.0 cm | 0.46 kg | Enhanced accuracy |
| 1756-OF4D | Diagnostic output | 4 | Voltage/Current | 14.5 × 5.6 × 14.0 cm | 0.47 kg | Fault diagnostics |
Recommended Popular Models (Same Platform)
| Model | Type | Function | Dimensions | Weight kg（ ） | Advantage |
|---|---|---|---|---|---|
| 1756-L81E | PLC CPU | High-speed processing | 14.5 × 5.6 × 14.0 cm | 0.45 kg | Strong control capability |
| 1756-EN2TR | Ethernet module | Communication | 14.5 × 5.6 × 14.0 cm | 0.29 kg | Stable networking |
| 1756-IB16 | Digital input | Signal input | 14.5 × 5.6 × 14.0 cm | 0.27 kg | Reliable sensing |
| 1756-OB16 | Digital output | DC switching | 14.5 × 5.6 × 14.0 cm | 0.36 kg | Stable output |
| 1756-PA75 | Power module | Power supply | 14.5 × 5.6 × 14.0 cm | 0.90 kg | System stability |
Installation Notes
- Install in ventilated industrial cabinet
- Ensure proper grounding
- Use shielded analog wiring
- Avoid electromagnetic interference sources
- Maintain proper cooling space
Maintenance Notes
| Item | Recommendation |
|---|---|
| Signal calibration | Periodic verification |
| Terminal inspection | Tight connection check |
| Dust cleaning | Regular maintenance |
| Output testing | Verify signal accuracy |
| Power stability | Ensure clean supply |
| Environmental control | Avoid humidity extremes |
Overall Summary
The 1756-OF4 is a compact 4-channel analog output module designed for industrial automation systems requiring precise voltage and current signal control. Its high resolution, fast response, and dual output capability make it suitable for a wide range of process control and machine automation applications where accurate analog signal generation is essential.