The Honeywell 621-9935 Serial I/O Module is designed for use with Honeywell’s Distributed Control System (DCS) platforms, including TotalPlant Solution (TPS) and PlantScape systems. This module facilitates serial communication between the DCS and field devices such as sensors, actuators, and other control devices in industrial automation environments.

With a robust design tailored for industrial applications, the 621-9935 provides reliable communication and data transfer through various serial protocols, ensuring seamless integration with plant equipment. It is ideal for applications requiring fast and accurate data exchange between remote devices and central control systems.

Key Features

• Serial Communication for interfacing with field devices

• Multiple Protocol Support: RS-232, RS-485, and other standard serial protocols

• High Data Throughput to support real-time control

• Versatile Configuration: Supports point-to-point or multi-drop communication setups

• Integration with Honeywell DCS for streamlined process control

• Industrial-grade design for reliable performance in harsh environments

• Status LEDs for real-time diagnostics and system health monitoring

• Compact Form Factor for easy integration into Honeywell I/O racks

Technical Specifications

Industry Applications

• Oil & Gas – Remote communication with field devices like flowmeters and pressure sensors

• Power Generation – Integrating turbine control systems and remote monitoring stations

• Chemical & Petrochemical – Data exchange between central control and field-mounted instruments

• Water & Wastewater – Remote monitoring of pumps, valves, and filtration systems

• Manufacturing – Communication between automation systems and external machines

• Pharmaceuticals – Accurate control and monitoring of sensitive equipment

Advantages

• Wide Compatibility: Supports RS-232, RS-485, and other serial communication protocols

• Reliable Communication: Ensures uninterrupted data transfer even in harsh environments

• Easy Integration: Seamless integration with Honeywell DCS systems (TPS and PlantScape)

• Compact Design: Optimized to fit within standard Honeywell I/O racks

• Diagnostic LED Indicators: Allows for real-time monitoring of communication health

• Hot-swappable: Supports quick replacement to minimize downtime

• Versatile: Supports both point-to-point and multi-drop communication setups

• Long-lasting: Designed for extended service life with minimal maintenance

• Industrial Strength: Built to withstand extreme conditions in industrial plants

Frequently Asked Questions (FAQ)

1. What protocols does the 621-9935 Serial I/O Module support?

   It supports RS-232, RS-485, and other serial communication protocols.

2. Can this module be used for real-time data transfer?

   Yes, it supports high-speed data transfer for real-time control and monitoring.

3. What is the maximum temperature range for operation?

   The module operates in temperatures ranging from 0°C to +60°C.

4. How many serial ports does this module have?

   It features 2 x RS-232 or RS-485 communication ports.

5. Can I replace this module without shutting down the system?

   Yes, the module is designed to be hot-swappable for quick replacement.

6. Is this module compatible with all Honeywell DCS systems?

   Yes, it is fully compatible with Honeywell’s TPS and PlantScape systems.

7. What type of devices can this module communicate with?

   It can communicate with field devices like sensors, actuators, and controllers using serial communication.

8. What is the size of the module?

   It has dimensions of approximately 264 mm x 32 mm x 127 mm.

9. Does the module have any diagnostic features?

   Yes, it includes LED indicators for real-time monitoring of system status.

10. Is the 621-9935 module CE certified?

    Yes, it is CE, UL, and CSA certified for use in industrial environments.