621-9939

Honeywell

Honeywell 621-9939 Series 9000 Serial Link Module

SKU 621-9939

Disponibile
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Honeywell
  • Product No.: 621-9939
  • Origin United States
  • Product Type: Serial Link Modules
  • Payment: T/T, Western Union
  • Weight: 2.0 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

Tags

Serial Link Modules Series 9000
Quantità
Call sales Contact

Product Description

Description

Designed for seamless integration within legacy and specialized industrial control architectures, the Honeywell 621-9939 functions as a reliable, high-capacity Serial Link Module. This module resides within the Honeywell Series 9000 system, establishing robust network connections to coordinate distributed I/O systems and remote processors over localized serial links.

Operating over the standardized RS485 electrical protocol, the 621-9939 manages complex multi-drop configurations. It enables deterministic data transmission across industrial plants, ensuring that field devices communicate consistently with centralized controllers. Built to handle demanding processing duties, this module features structured channel capacities optimized for dense industrial networks.

Features

  • Implements robust RS485 serial communication for extended distance and noise immunity.
  • Supports up to 16 drops per communication channel.
  • Manages up to 2040 discrete or analog I/O points per channel.
  • Backplane-powered with a standard draw of 2.06 A at +5 V DC.
  • Rugged form factor built to slide securely into standard Series 9000 rack slots.

Applications

  • Distributed Control Systems (DCS) integration.
  • Remote rack communication and I/O bus expansion.
  • Legacy industrial system migration and maintenance.
  • Water and wastewater management infrastructure.

Technical Specifications

Manufacturer Honeywell
Part Number / Model 621-9939
Series Series 9000
Module Type Serial Link Module
Electrical Format RS485
Operating Current 2.06 A (+5 V DC typical)
Maximum Drops per Channel 16
Maximum I/O Capacity per Channel 2040
Approximate Shipping Weight 2.0 kg

Installation Guidelines

To ensure optimal signal integrity and module longevity, follow these engineering practices during installation:

  • Rack Placement: Verify that the rack power supply is deactivated before inserting or extracting the module to prevent electrical damage.
  • Shielding and Grounding: Ensure the RS485 communication cable shields are properly grounded at a single point to prevent ground loop currents from interfering with serial data.
  • Termination: Apply proper termination resistors (typically 120 Ohms) at the physical ends of the RS485 network segment to prevent signal reflections.
  • Cooling: Maintain clear ventilation space around the rack assembly to allow standard thermal convection, preventing heat build-up.
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the primary function of the Honeywell 621-9939?
The Honeywell 621-9939 is a Serial Link Module designed for Series 9000 industrial systems, facilitating RS485 serial communication between remote and local I/O units.
What is the operating power requirement for the 621-9939 module?
The module operates on standard backplane power, drawing a typical operating current of 2.06 A at +5 V DC.
How many drops and I/O points can this module support per channel?
The module supports a maximum of 16 drops per channel and can manage up to 2040 I/O points per channel.
What communication standard does the Honeywell 621-9939 use?
It utilizes the RS485 electrical format to support reliable multi-drop communications in electrically noisy environments.
Reviews

More from this brand

Gruppo IOTA a ingressi analogici non ridondanti Series 8 Honeywell 8C-TAIXA1 51307125-175 con rivestimento
8C-TAIXA1Gruppo IOTA a ingressi analogici non ridondanti Series 8 Honeywell 8C-TAIXA1 51307125-175 con rivestimento
IOTA a uscite digitali ridondanti da 12 pollici Experion Series C Honeywell CC-TDOD61 51307089-175
CC-TDOD61 51307089-175IOTA a uscite digitali ridondanti da 12 pollici Experion Series C Honeywell CC-TDOD61 51307089-175
Modulo di uscita digitale Honeywell 621-6550 IPC 621
621-6550Modulo di uscita digitale Honeywell 621-6550 IPC 621
Modulo di protezione dalla polvere Honeywell 2MLT-DMMA MasterLogic-200
2MLT-DMMAModulo di protezione dalla polvere Honeywell 2MLT-DMMA MasterLogic-200

621-9939

Stock & lead time on request

Call
  • 621-9939
1 1

Honeywell 621-9939 Series 9000 Serial Link Module

Only 4 item(s) left in stock

  • Manufacturer: Honeywell

  • Product No.: 621-9939

  • Country of origin:United States

  • Product Type: Serial Link Modules

  • Payment: T/T, Western Union

  • Weight: 2000g

  • Shipping port: Xiamen

  • Warranty: 12 months

Visualizza dettagli completi
Product Description
FAQ
Shipping Returns
Additional details
Reviews

Description

Designed for seamless integration within legacy and specialized industrial control architectures, the Honeywell 621-9939 functions as a reliable, high-capacity Serial Link Module. This module resides within the Honeywell Series 9000 system, establishing robust network connections to coordinate distributed I/O systems and remote processors over localized serial links.

Operating over the standardized RS485 electrical protocol, the 621-9939 manages complex multi-drop configurations. It enables deterministic data transmission across industrial plants, ensuring that field devices communicate consistently with centralized controllers. Built to handle demanding processing duties, this module features structured channel capacities optimized for dense industrial networks.

Features

  • Implements robust RS485 serial communication for extended distance and noise immunity.
  • Supports up to 16 drops per communication channel.
  • Manages up to 2040 discrete or analog I/O points per channel.
  • Backplane-powered with a standard draw of 2.06 A at +5 V DC.
  • Rugged form factor built to slide securely into standard Series 9000 rack slots.

Applications

  • Distributed Control Systems (DCS) integration.
  • Remote rack communication and I/O bus expansion.
  • Legacy industrial system migration and maintenance.
  • Water and wastewater management infrastructure.

Technical Specifications

Manufacturer Honeywell
Part Number / Model 621-9939
Series Series 9000
Module Type Serial Link Module
Electrical Format RS485
Operating Current 2.06 A (+5 V DC typical)
Maximum Drops per Channel 16
Maximum I/O Capacity per Channel 2040
Approximate Shipping Weight 2.0 kg

Installation Guidelines

To ensure optimal signal integrity and module longevity, follow these engineering practices during installation:

  • Rack Placement: Verify that the rack power supply is deactivated before inserting or extracting the module to prevent electrical damage.
  • Shielding and Grounding: Ensure the RS485 communication cable shields are properly grounded at a single point to prevent ground loop currents from interfering with serial data.
  • Termination: Apply proper termination resistors (typically 120 Ohms) at the physical ends of the RS485 network segment to prevent signal reflections.
  • Cooling: Maintain clear ventilation space around the rack assembly to allow standard thermal convection, preventing heat build-up.
Key Features:
#Serial Link Modules #Series 9000

What is the primary function of the Honeywell 621-9939?
The Honeywell 621-9939 is a Serial Link Module designed for Series 9000 industrial systems, facilitating RS485 serial communication between remote and local I/O units.

What is the operating power requirement for the 621-9939 module?
The module operates on standard backplane power, drawing a typical operating current of 2.06 A at +5 V DC.

How many drops and I/O points can this module support per channel?
The module supports a maximum of 16 drops per channel and can manage up to 2040 I/O points per channel.

What communication standard does the Honeywell 621-9939 use?
It utilizes the RS485 electrical format to support reliable multi-drop communications in electrically noisy environments.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

Technical knowledge

PLC analog and digital signal filtering for stable input data

Filtrare i segnali PLC rumorosi senza nascondere i guasti reali

Il filtraggio dell’input può stabilizzare i dati del PLC, ma un’eccessiva attenuazione ritarda gli allarmi e maschera i cambiamenti del processo. Scopri come diagnosticare il rumore, scegliere filtri...

Enclosed PWM drive for a brushed DC motor

SCR o PWM? Scegliere un azionamento per motori CC a spazzole

I sistemi di azionamento SCR e PWM regolano i motori CC a spazzole in modi diversi. Questo confronto analizza la qualità della coppia, l’intervallo di velocità, l’inversione, la frenatura, il rumore...

Industrial inverter converting a DC bus into controlled AC

Come gli inverter industriali generano CA da un bus CC

Gli inverter industriali sintetizzano corrente alternata controllabile da un bus in corrente continua tramite la commutazione e il filtraggio dei semiconduttori. Questa guida illustra i ponti H, la...

Force-torque sensor mounted between robot wrist and tool

Controllo della forza del robot: dal rilevamento del contatto alla stabilità del processo

Il controllo della forza consente a un robot di adattarsi al contatto invece di seguire esclusivamente la posizione. Questa guida confronta gli approcci al rilevamento, le modalità di controllo, i...

Configurable industrial sensor performing local logic

Quando la logica a livello di sensore è utile e quando nasconde i rischi

I sensori configurabili possono eseguire decisioni su finestre, latch, ritardi e logica booleana prima che i dati raggiungano un PLC. Il vantaggio è una risposta locale più rapida; il rischio...

Factory I/O conveyor model linked to a Mitsubishi PLC simulation

Collegamento di GX Simulator a Factory I/O tramite OPC

Una configurazione stabile di messa in servizio virtuale Mitsubishi richiede più della semplice corrispondenza degli indirizzi. Questa guida spiega il percorso dei dati GX Simulator–OPC–Factory I/O,...