621-9928R HONEYWELL

Product Dimensions：

A Honeywell Digital Input Module is an electronic board with a set number of input channels. It is designed to be highly reliable and rugged for industrial environments. The module accepts binary signals from devices like pushbuttons, limit switches, proximity sensors, and relay contacts. It then translates these physical signals into a logical state (on/off, 1/0) that the PLC, DCS, or other controller can use to execute its program. Key features often include:

• Galvanic Isolation: This electrically separates the module's internal circuitry from the field wiring, protecting the sensitive control system from voltage surges and electrical noise.

• LED Indicators: Each channel typically has an LED to provide immediate visual feedback on its status (on/off), which greatly simplifies troubleshooting.

• High Channel Density: Many modules are designed to offer a high number of inputs in a compact form factor, saving valuable cabinet space.

• Diagnostics: Advanced modules may include built-in diagnostics to detect faults like open circuits or shorts on the input wiring, providing proactive maintenance alerts.

Product Parameters

The technical specifications of a Honeywell Digital Input Module are essential for proper selection and application.

• Input Voltage: Common ratings include 24V DC, 48V DC, or 120/230V AC, matching standard industrial sensor outputs.

• Number of Channels: Modules are available in various channel counts, such as 8, 16, or 32 inputs per module.

• Input Type: Some modules are designed for specific signal types, like dry contacts or voltage signals, and may be configurable for different logic types (sinking or sourcing).

• Response Time: This is the time it takes for the module to detect a change in the input signal, often in the millisecond range (<1ms), which is crucial for high-speed applications.

• Isolation Voltage: The level of electrical isolation between channels and the system, typically rated in volts (e.g., 1500V AC).

• Environmental Ratings: Operating temperature ranges from -40°C to 70°C and humidity ratings (e.g., 5-95% non-condensing) ensure reliability in harsh conditions.

• Certifications: Modules are certified to international standards like CE, UL, and CSA, and some may have safety ratings like SIL 2/3 for critical safety systems.

Product Advantages

The primary advantages of using Honeywell Digital Input Modules are:

• Reliability: Built with industrial-grade components, these modules are engineered for continuous operation in demanding environments where failure is not an option.

• Integration: They are designed for seamless integration with Honeywell's control platforms like Experion PKS, minimizing engineering effort and ensuring a unified system architecture.

• Safety: Features like electrical isolation and robust designs enhance system safety and prevent damage from electrical disturbances.

• Cost-Effectiveness: High-density modules and universal channel technology reduce wiring complexity and cabinet space, leading to lower installation and maintenance costs.

• Ease of Use: Plug-and-play functionality, hot-swappable designs, and clear LED indicators simplify installation, maintenance, and troubleshooting.

Important Considerations

When selecting and using a Honeywell Digital Input Module, keep these points in mind:

• Signal Compatibility: Verify that the module's input voltage and signal type match the characteristics of your field devices.

• Wiring: Always follow the manufacturer's specific wiring diagrams and recommendations to ensure proper operation and safety. Use appropriate wire gauges and grounding practices.

• Environmental Match: Install the module in an environment that is within its specified temperature, humidity, and vibration limits to prevent premature failure.

• System Architecture: Ensure the module is compatible with your specific Honeywell controller and I/O rack system, as different families of modules are not always interchangeable.

• Safety Requirements: For safety-critical applications, choose a module that is specifically certified for the required Safety Integrity Level (SIL).

We have the same series of models in stock.  If you don't find the model you need, please contact us and we will provide you with an official quotation！

Honeywell 621-6550R

Honeywell 621-6650RC

Honeywell 621-9928R

Honeywell 621-9933C

Honeywell FSP-851

Honeywell 621-9937C

Honeywell 621-9938R

Honeywell 621-9990C

Honeywell 82408217-001

Honeywell 9010-012C

Colour：new                                   Warranty: 12 months

Lead Time：3-day working day      Price: Please contact us  

Shipping Port: Xiamen, China         Payment:T/T

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service