Product Overview

The Honeywell 621-9939 Serial Link Module (SLM) is a critical component for distributed control systems (DCS), enabling asynchronous serial communication between remote I/O and processor modules. Featuring a dedicated processor with its own data table, the module allows for independent operation and high-speed data exchange. It is ideal for TDC 3000 and similar architectures, enhancing system flexibility and fault tolerance.

Technical Specifications

Performance and Integration

The 621-9939 operates independently from the main processor, allowing for asynchronous data transfer and reducing system bottlenecks. It supports remote I/O communication and integrates seamlessly into Honeywell’s rack-mounted control systems, making it ideal for environments that demand high-speed, fault-tolerant communication.

Design and Reliability

The 621-9939 is built with industrial-grade components and certified to CE standards. Its compact form factor of 0.699 kg fits standard enclosures. The module’s dedicated processor ensures reliable performance even under high-load conditions, making it suitable for mission-critical industrial applications.

Application

The Honeywell 621-9939 Serial Link Module is designed for distributed control systems (DCS), supporting asynchronous serial communication for high-speed and fault-tolerant integration. It is particularly useful in TDC 3000 and other Honeywell control architectures, enabling remote I/O and reducing system traffic.

FAQ

Q1: Is this product brand new and original?
A1: Yes, we only supply brand new, original 621-9939 modules from Honeywell.

Q2: Do you have stock available?
A2: We typically ship within 1–3 business days depending on order size.

Q3: What shipping methods do you use?
A3: We commonly use DHL, FedEx, UPS, TNT, and EMS.

Q4: What if there’s a quality issue?
A4: We support returns within 30 days for any quality-related concerns.