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Honeywell 621-6550RC Digital Output Module

Honeywell 621-6550RC Digital Output Module

  • 1000 En stock
  • Manufacturer: HONEYWELL

  • Product No.: 621-6550RC

  • Condition: En stock

  • Product Type: Digital Output Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 676g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Descripción

Product Description

The Honeywell 621‑6550RC is a rugged Digital Output (DO) Module engineered for seamless integration with Honeywell 620/621 Series, TDC 2000, and TDC 3000 distributed control systems. Designed to drive discrete field devices, this module reliably switches relays, solenoids, contactors, alarms, and interlock circuits with precision.

The RC variant features a conformal coating, providing enhanced protection against humidity, corrosive gases, dust, and other harsh industrial conditions. This makes it an ideal choice for demanding applications in power generation, petrochemical, refining, and manufacturing environments.

Technical Specifications

Specification Details
Manufacturer Honeywell
Model 621‑6550RC
Product Type Digital Output Module
System Compatibility Honeywell 620/621 Series, TDC 2000, TDC 3000
Output Type Discrete digital outputs (relay or transistor configurable)
Output Voltage 24 VDC (standard)
Output Current 2 A per channel, 5 A per group of 4 channels, 12 A maximum per module
Channels 16-point multi-channel output
Isolation Channel-to-channel and channel-to-logic isolation
Environmental Protection Conformal coating (RC version) for high-humidity and corrosive environments
Diagnostics Status LEDs for each channel and overall module health
Mounting Standard 620/621 Series rack-mounted backplane
Operating Temperature 0°C to 60°C
Dimensions Standard 620-series module form factor
Weight 1.49 lbs

Key Features

  • Reliable switching of relays, solenoids, and other discrete devices

  • Conformal-coated electronics for extended life in corrosive or humid environments

  • Channel-to-channel and logic isolation for high noise immunity

  • Rugged construction and long service life

  • Built-in diagnostics with status LEDs for troubleshooting

  • Compatible with legacy Honeywell DCS systems for easy replacement

Application Scenarios

The 621‑6550RC is widely deployed in industrial plants requiring precise digital output control:

  • Power generation stations for relay and alarm control

  • Petrochemical and refining units for valve interlocks

  • Manufacturing plants for process shutdown sequences

  • Emergency alarm and safety interlock circuits

FAQ / Model Comparison

Q: What is the main difference between 621‑6550 and 621‑6550RC?
A: The RC variant features conformal-coated electronics for enhanced protection against moisture, dust, and corrosive gases.

Q: Can this module drive both relay and transistor outputs?
A: Yes, output type is configurable depending on system requirements.

Q: How many outputs can be used simultaneously?
A: Each channel supports up to 2 A, groups of 4 channels up to 5 A, and the total module load up to 12 A.

Características

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