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Hitachi safety relay testing & testing

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Hitachi Safety Relay Repair and Testing Services by Roc Industrial LLC

Is your Hitachi safety relay malfunctioning, causing downtime and safety concerns? Roc Industrial LLC specializes in comprehensive Hitachi safety relay repair and testing services, ensuring your equipment operates safely and efficiently. We understand the critical role these relays play in your industrial automation systems. With our fast turnaround times, reliable repairs, and expert technicians, Roc Industrial LLC is your trusted partner for all your Hitachi safety relay needs. We offer free evaluations and warranty-backed repairs, providing you with peace of mind.



About Hitachi Safety Relays

Hitachi is a globally recognized leader in industrial automation, and their safety relays are integral components in ensuring safe operation of machinery and equipment. Hitachi safety relays are designed to monitor safety circuits, such as emergency stops, safety gates, and light curtains, providing a crucial layer of protection for personnel and equipment. These relays are known for their reliability, advanced features, and compliance with stringent safety standards.


Used extensively in CNC machines, robotics, packaging equipment, and various other automated systems, Hitachi safety relays are vital for maintaining a safe working environment. Their robust design and sophisticated monitoring capabilities make them a preferred choice for industries where safety is paramount. When these critical components fail, it's essential to have a reliable repair service to minimize downtime and ensure continued safe operation.



Supported Models & Series

We repair a wide range of Hitachi safety relay models and series, including but not limited to:

  • HR1S Series

  • HR5S Series

  • SR Series

  • SR100 Series

  • SR200 Series

  • SR300 Series

  • SR-Mini Series

  • Various discontinued and legacy models

If you don't see your specific model listed, please contact us. Our expertise extends to a wide variety of Hitachi safety relays, and we can often repair even older or less common models.



Common Hitachi Safety Relay Problems We Repair

Hitachi safety relays, while robust, can experience failures due to various factors, including age, environmental conditions, and electrical surges. Recognizing these common issues is the first step in getting your equipment back up and running. Here are some of the common problems we address:

  • Failure to Activate: The relay fails to energize when a safety condition is triggered.

  • Erratic Operation: Intermittent or unpredictable behavior, leading to unreliable safety monitoring.

  • Input Circuit Failure: Problems with the input circuits that monitor safety devices.

  • Output Circuit Failure: Issues with the output circuits that control machine shutdown or other safety functions.

  • Communication Errors: Difficulties in communicating with other devices in the safety system.

  • Internal Component Failure: Degradation or failure of internal components, such as capacitors, resistors, or integrated circuits.

  • Power Supply Issues: Problems with the relay's internal power supply, leading to unstable operation.

  • Contact Degradation: Worn or corroded contacts, resulting in poor electrical connections.

  • LED Indicator Problems: Failure of LED indicators to light up or display correct status.

  • False Tripping: The relay trips without a valid safety condition being present.


Our Hitachi Safety Relay Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure your Hitachi safety relays are restored to optimal working condition. Our process is designed to identify the root cause of the problem, implement effective repairs, and thoroughly test the relay to guarantee its reliability.

  1. Free Evaluation and Quote: We begin with a free evaluation of your Hitachi safety relay to determine the extent of the damage and the necessary repairs. Based on our assessment, we provide you with a detailed quote for the repair service.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your relay arrives safely at our repair facility. We can also arrange for expedited shipping if needed.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use advanced diagnostic equipment to pinpoint the exact cause of the failure. We conduct thorough testing of all components and circuits to identify any underlying issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. Our extensive inventory of parts allows us to quickly address a wide range of issues.

  5. Load Testing and Quality Checks: After the repairs are completed, we subject the relay to rigorous load testing to ensure it performs reliably under real-world conditions. We conduct thorough quality checks to verify that all functions are working correctly.

  6. Warranty-Backed Return and Support: We stand behind our repairs with a comprehensive warranty. If you experience any issues after the repair, we will provide prompt and effective support to resolve the problem.


Nationwide Repair Services

Roc Industrial LLC proudly offers nationwide Hitachi safety relay repair services. No matter where you are located in the United States, we can provide fast and reliable repair solutions to minimize your downtime. We serve customers in major metropolitan areas, including New York, Los Angeles, Chicago, Houston, and Dallas, as well as smaller cities and rural areas.


We understand the importance of quick turnaround times, which is why we offer fast shipping options and strive to complete repairs as quickly as possible. Our goal is to get your Hitachi safety relays back in operation with minimal disruption to your business.



Why Choose Roc Industrial LLC?

When it comes to Hitachi safety relay repair, Roc Industrial LLC offers a unique combination of expertise, reliability, and customer service. Here are just a few reasons why you should choose us:

  • 30+ Years of Experience: With over three decades of experience in industrial electronic repair, we have the knowledge and skills to handle even the most complex Hitachi safety relay repairs.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty, giving you peace of mind knowing that your repairs are protected.

  • Thousands of Parts in Stock: Our extensive inventory of parts allows us to quickly address a wide range of issues, minimizing downtime.

  • Fast Turnaround, Often Same-Day: We understand the importance of quick turnaround times and strive to complete repairs as quickly as possible, often offering same-day service for urgent repairs.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring that we adhere to the highest standards of quality and reliability.

  • Exceptional Customer Support: We are committed to providing exceptional customer support, from the initial evaluation to the final repair and beyond.

Don't let a faulty Hitachi safety relay compromise the safety and efficiency of your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Hitachi safety relay repair and testing services. We are your trusted partner for all your industrial electronic repair needs.

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