Honeywell 10302/2/1 Watchdog Repeater (WDR) – Reliable Signal Distribution for Redundant Power Systems

Product Overview

The Honeywell 10302/2/1 (Type 10302/2/1 12600) is a Watchdog Repeater (WDR) designed for use in multi-PSU and redundant I/O configurations. It ensures that the watchdog signal (WDG1 + WDG2) is properly repeated and distributed to subsequent power supply units (PSU 2, 3, 4) and to output modules in non-redundant I/O parts. This component is essential for maintaining system safety and availability in critical industrial automation applications.

In any safety-related control system, the watchdog signal is a vital health-check mechanism. The 10302/2/1 repeater allows you to extend this signal across multiple power domains without degradation, ensuring that all safety functions remain active even when power is sourced from different supplies. By integrating this Honeywell WDR into your architecture, you can achieve the required Safety Integrity Level (SIL) while optimizing your overall cost of ownership.

Key Features

• Watchdog Repeater Functionality: Repeats the watchdog signal to multiple PSUs and I/O modules, ensuring consistent monitoring across the system.
• Compact Design: Occupies only 4 TE, 3 HE (4 HP, 3U) – saves valuable cabinet space and reduces enclosure costs.
• Low Power Consumption: Draws just 5 Vdc 35 mA and 24 Vdc 25 mA (without WDROUT output current), minimizing energy costs and thermal load.
• Wide Compatibility: Works with Honeywell M24-20 HE and M24-12 HE power supplies, as well as any 24 Vdc supply with output voltage below 37 Vdc under fault conditions.
• High Reliability: Approved to CE, TÜV, and UL standards, ensuring compliance with international safety requirements.
• Easy Integration: Module code (holes A5, A9) and rack code (large pins A5, A9) simplify installation and reduce wiring errors.
• Lightweight: At just 0.12 kg, it adds negligible weight to your panel and reduces shipping costs.

Technical Specifications

| Parameter | Value |

|-----------|-------|

| Manufacturer | Honeywell |

| Product No. | 10302/2/1 |

| Product Type | Watchdog Repeater (WDR) |

| Type Number | 10302/2/1 12600 |

| Approvals | CE, TÜV, UL |

| Software Versions | ≥ 3.00 |

| Space Requirements | 4 TE, 3 HE (= 4 HP, 3U) |

| Power Requirements | 5 Vdc 35 mA (without WDROUT output current); 24 Vdc 25 mA |

| WDG1 + WDG2 Input Current | 0.1 mA |

| Module Code | - holes A5, A9 |

| Rack Code | - large pins A5, A9 |

| Weight | 0.12 kg |

Applications

The Honeywell 10302/2/1 Watchdog Repeater is used in a variety of safety and control systems, including:

• Multiple-PSU Configurations: Required for each subsequent 24 Vdc to 5 Vdc power supply unit (PSU 2, 3, 4) to ensure watchdog signal continuity.
• Power Supplies with Higher Output: Required when the 24 Vdc supply can exceed 31 Vdc (maximum output must remain below 37 Vdc under any single or double fault). This protects downstream electronics from overvoltage stress.
• High Watchdog Current Demands: Required when the total watchdog current exceeds 900 mA, ensuring sufficient drive capability for multiple modules.
• Redundant and Non-Redundant I/O Combinations: Used to create the watchdog output for output modules in the non-redundant I/O part, allowing mixed architectures without compromising safety.
• Redundant Central Parts with Non-Redundant I/O: Monitors the 5 Vdc power supply when no dedicated 5 Vdc monitoring is present, providing an additional layer of safety.

Industries that benefit from this product include:

• Oil & Gas
• Chemical Processing
• Power Generation
• Water Treatment
• Manufacturing Automation
• Process Safety Systems

Why Choose UbestNine?

At UbestNine, we specialize in providing high-quality new and refurbished industrial automation parts. Here’s why customers trust us:

• Quality Assurance: Every part is tested to meet original specifications, ensuring reliable performance.
• Cost Savings: Refurbished options offer up to 60% savings compared to new parts, without compromising functionality.
• Fast Shipping: We maintain a vast inventory to ensure quick dispatch, minimizing downtime.
• Expert Support: Our technical team can help you select the right part and answer any compatibility questions.
• Warranty: All products come with a warranty for peace of mind.

FAQ

Q: What is the purpose of a Watchdog Repeater?

A: A Watchdog Repeater (WDR) repeats the watchdog signal from a central controller to multiple power supply units and I/O modules, ensuring that all safety functions are monitored even in complex, redundant power architectures.

Q: When is the Honeywell 10302/2/1 required?

A: It is required in multiple-PSU configurations (for PSU 2, 3, 4), when using M24-20 HE or M24-12 HE power supplies, when the 24 Vdc supply can exceed 31 Vdc (but must stay below 37 Vdc under fault), when the watchdog current exceeds 900 mA, or when combining redundant and non-redundant I/O.

Q: What are the power requirements of the 10302/2/1?

A: It requires 5 Vdc at 35 mA and 24 Vdc at 25 mA (excluding WDROUT output current). This low consumption helps reduce energy costs.

Q: Is the 10302/2/1 certified?

A: Yes, it has CE, TÜV, and UL approvals, making it suitable for use in safety-related applications worldwide.

Q: Can I use this with any 24 Vdc power supply?

A: It can be used with any 24 Vdc supply whose maximum output voltage remains below 37 Vdc under any single or double fault condition. Always verify your supply's characteristics.

Cost-Efficiency Analysis

Every feature of the Honeywell 10302/2/1 is designed to reduce total cost of ownership:

• Compact size (4 TE, 3 HE) reduces cabinet space and cooling requirements, lowering infrastructure costs.
• Low power consumption (5 Vdc 35 mA, 24 Vdc 25 mA) directly reduces energy bills over the product's lifetime.
• Wide compatibility avoids the need for multiple specialized repeaters, simplifying inventory and reducing procurement costs.
• High reliability (CE, TÜV, UL) minimizes unplanned downtime and maintenance expenses.
• Lightweight (0.12 kg) cuts shipping and handling costs, especially for bulk orders.

By choosing the Honeywell 10302/2/1 from UbestNine, you invest in a proven component that balances performance and economy.

Ordering Information

To order the Honeywell 10302/2/1 Watchdog Repeater, contact UbestNine today. We offer competitive pricing and fast delivery. Whether you need a single unit or bulk quantities, our team is ready to assist you.

UbestNine – Your Trusted Partner for Industrial Automation Parts