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Product Introduction
The Honeywell 621-6550 Digital Output Module is designed to provide highly reliable and efficient control of external devices within Honeywell’s HC900 Process Automation Controller system. As a part of Honeywell’s control and monitoring system offerings, this module allows for seamless digital signal output to control a wide variety of field devices, including actuators, relays, and other industrial control equipment. The 621-6550 Digital Output Module features 16 channels of voltage-free (dry contact) relay outputs, making it ideal for switching control actions such as on/off operations, alarms, or automated process control tasks.
This module is designed to integrate seamlessly with other Honeywell HC900 series modules and provides industrial-grade reliability for demanding process control environments. Its advanced features and rugged design ensure long-term performance and accuracy in a variety of industries, such as manufacturing, oil and gas, chemical processing, and power generation.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | 621-6550 |
| Product Type | Digital Output Module |
| Channels | 16 Digital Output Channels |
| Output Type | Relay (dry contact) |
| Relay Rating | 2A @ 30V DC, 2A @ 250V AC |
| Output Voltage | 24V DC (Nominal) |
| Isolation | Optical isolation between output channels and the control system |
| Power Consumption | Approx. 3.5 W |
| Dimensions (W x H x D) | 158 x 98 x 30 mm |
| Weight | 0.66 kg |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -20°C to 70°C |
| Humidity | 5% to 95% RH (Non-condensing) |
| Connector Type | Screw terminal block |
| Compliance | CE, UL, RoHS, FCC |
| Status Indicators | LED indicators for output status and fault detection |
Product Applications
The Honeywell 621-6550 Digital Output Module is designed to serve applications that require reliable digital output control for industrial processes. Key applications include:
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Process Control Systems: Used for controlling actuators, valves, and other field devices in process automation.
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Alarm Systems: The module can control relays for triggering alarms in case of critical conditions.
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Industrial Automation: Interfaces with relay-based actuators for switching high-power equipment like motors or heaters.
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Manufacturing: Provides digital outputs to control production line machines and other automation systems.
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Safety Systems: Can be used in safety-critical systems to trigger outputs based on emergency conditions.
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Building Management Systems (BMS): Interfaces with HVAC systems, security systems, and other control systems in commercial buildings.
Product Advantages
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High Output Density: With 16 output channels, the module allows efficient use of space and reduces the need for additional components.
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Versatile Relay Outputs: The relay outputs are suitable for controlling various types of devices, including motors, lights, and alarms.
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Industrial-Grade Isolation: Offers optical isolation between the output channels and the control system, protecting the system from electrical noise and surges.
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Compact Design: The module’s small size (158 x 98 x 30 mm) allows easy installation in tight control panels and enclosures.
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LED Indicators: The status LEDs provide easy monitoring of the output channels, helping operators identify faults or issues.
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Wide Operating Temperature Range: Operates in environments with temperatures ranging from 0°C to 60°C, making it suitable for various industrial environments.
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Robust Performance: Designed to handle harsh industrial conditions and provide reliable outputs over long periods of time.
Frequently Asked Questions (FAQ)
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What type of outputs does the 621-6550 module provide?
The 621-6550 provides 16 digital output channels using dry contact relays that can control external devices like motors, lights, or alarms. -
What is the maximum relay rating of the module?
The relay can handle up to 2A at 30V DC and 2A at 250V AC. -
Can the 621-6550 module be used to control high-voltage equipment?
Yes, the module can control relays connected to high-voltage equipment, but the relay itself only handles low-voltage dry contact switching. -
What is the power consumption of the 621-6550?
The module typically consumes 3.5 W of power during operation. -
How are the output channels monitored?
The module provides LED indicators for each output channel, indicating whether the channel is active or in a fault condition. -
Is the module compatible with other Honeywell control systems?
Yes, the module is designed to integrate with Honeywell’s HC900 Process Automation Controller and can be used in a wide variety of process automation systems. -
What is the operating temperature range of the 621-6550?
The module operates within a temperature range of 0°C to 60°C. -
Can the module be used in environments with high humidity?
Yes, the module is rated for use in environments with 5% to 95% humidity (non-condensing). -
Does the 621-6550 module have input isolation?
Yes, the module has optical isolation between the output channels and the control system to protect against electrical interference. -
Is the Honeywell 621-6550 compliant with industrial standards?
Yes, the module complies with various industry standards, including CE, UL, and RoHS.
Related Models from the Same Series
| Model | Description | Key Features |
|---|---|---|
| 621-6551 | 8-channel Digital Output Module | 8 relay outputs, ideal for small systems |
| 621-6552 | 16-channel Digital Input Module | High-density input module for control systems |
| 621-6553 | Digital I/O Module with 16 Inputs and 16 Outputs | Combines both input and output functionality in one module |
| 621-6554 | High-Speed Digital Output Module | High-speed output control for time-critical operations |
| 621-6555 | 4-Channel Relay Output Module | Compact module for smaller applications requiring fewer outputs |
| 621-6556 | Isolated Digital Output Module | Provides high isolation to protect sensitive equipment |
Popular Honeywell Models
| Model | Description | Key Features |
|---|---|---|
| HC900 | Process automation controller | Scalable, flexible process control solution |
| 621-6000 | Universal I/O Module | Supports a wide range of I/O types for industrial applications |
| 621-6100 | Analog Input Module | Provides reliable analog input channels for precise measurement |
| 631-5000 | Smart Flow Transmitter | Measures mass flow with high accuracy |
| 631-3000 | Smart Temperature Transmitter | Temperature measurement for critical processes |
| 720-4000 | Honeywell Safety Controller | SIL-3 safety-rated controller for critical applications |
