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Danfoss safety relay calibration specialists

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.

Danfoss Safety Relay Repair Services by Roc Industrial LLC

Is your Danfoss safety relay malfunctioning, causing downtime and safety concerns? Roc Industrial LLC specializes in providing fast, reliable, and expert Danfoss safety relay repair services. We understand the critical role these devices play in protecting your personnel and equipment. With our extensive experience, state-of-the-art diagnostic tools, and commitment to quality, Roc Industrial LLC is your trusted partner for all your Danfoss safety relay repair needs. We offer rapid turnaround times, comprehensive testing, and warranty-backed repairs to ensure your safety systems are back up and running efficiently.



About Danfoss Safety Relays

Danfoss is a globally recognized leader in developing and manufacturing high-quality industrial components, including a comprehensive range of safety relays. Danfoss safety relays are designed to monitor safety circuits and ensure the safe operation of machinery and equipment. They are crucial components in various industrial applications, providing essential safety functions such as emergency stop monitoring, safety gate monitoring, and light curtain control. Danfoss has built a strong reputation for innovation, reliability, and adherence to stringent safety standards.


Danfoss safety relays are widely used in industries such as manufacturing, automation, robotics, and process control. Their robust design and advanced features make them ideal for demanding environments where safety is paramount. These relays are designed to meet international safety standards, providing a reliable and cost-effective solution for protecting personnel and equipment from potential hazards. The Danfoss product line includes single-function relays, configurable safety controllers, and expansion modules, offering flexibility and scalability to meet diverse safety requirements.



Supported Models & Series

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

  • Danfoss RT Series: Including RT1, RT2, RT5, RT7, RT9, RT10, RT116, RT117, RT140, RT141, RT142, RT143, RT144, RT145, RT146, RT147, RT148, RT172, RT174, RT175, RT176, RT177, RT178, RT200, RT201, RT202, RT203, RT204, RT205, RT206, RT207, RT208, RT209, RT210, RT211, RT212, RT213, RT214, RT215, RT216, RT217, RT218, RT219, RT220, RT221, RT222, RT223, RT224, RT225, RT226, RT227, RT228, RT229, RT230, RT231, RT232, RT233, RT234, RT235, RT236, RT237, RT238, RT239, RT240, RT241, RT242, RT243, RT244, RT245, RT246, RT247, RT248, RT249, RT250, RT251, RT252, RT253, RT254, RT255, RT256, RT257, RT258, RT259, RT260, RT261, RT262, RT263, RT264, RT265, RT266, RT267, RT268, RT269, RT270, RT271, RT272, RT273, RT274, RT275, RT276, RT277, RT278, RT279, RT280, RT281, RT282, RT283, RT284, RT285, RT286, RT287, RT288, RT289, RT290, RT291, RT292, RT293, RT294, RT295, RT296, RT297, RT298, RT299, RT300, RT301, RT302, RT303, RT304, RT305, RT306, RT307, RT308, RT309, RT310, RT311, RT312, RT313, RT314, RT315, RT316, RT317, RT318, RT319, RT320, RT321, RT322, RT323, RT324, RT325, RT326, RT327, RT328, RT329, RT330, RT331, RT332, RT333, RT334, RT335, RT336, RT337, RT338, RT339, RT340, RT341, RT342, RT343, RT344, RT345, RT346, RT347, RT348, RT349, RT350, RT351, RT352, RT353, RT354, RT355, RT356, RT357, RT358, RT359, RT360, RT361, RT362, RT363, RT364, RT365, RT366, RT367, RT368, RT369, RT370, RT371, RT372, RT373, RT374, RT375, RT376, RT377, RT378, RT379, RT380, RT381, RT382, RT383, RT384, RT385, RT386, RT387, RT388, RT389, RT390, RT391, RT392, RT393, RT394, RT395, RT396, RT397, RT398, RT399, RT400, RT401, RT402, RT403, RT404, RT405, RT406, RT407, RT408, RT409, RT410, RT411, RT412, RT413, RT414, RT415, RT416, RT417, RT418, RT419, RT420, RT421, RT422, RT423, RT424, RT425, RT426, RT427, RT428, RT429, RT430, RT431, RT432, RT433, RT434, RT435, RT436, RT437, RT438, RT439, RT440, RT441, RT442, RT443, RT444, RT445, RT446, RT447, RT448, RT449, RT450, RT451, RT452, RT453, RT454, RT455, RT456, RT457, RT458, RT459, RT460, RT461, RT462, RT463, RT464, RT465, RT466, RT467, RT468, RT469, RT470, RT471, RT472, RT473, RT474, RT475, RT476, RT477, RT478, RT479, RT480, RT481, RT482, RT483, RT484, RT485, RT486, RT487, RT488, RT489, RT490, RT491, RT492, RT493, RT494, RT495, RT496, RT497, RT498, RT499, RT500, RT501, RT502, RT503, RT504, RT505, RT506, RT507, RT508, RT509, RT510, RT511, RT512, RT513, RT514, RT515, RT516, RT517, RT518, RT519, RT520, RT521, RT522, RT523, RT524, RT525, RT526, RT527, RT528, RT529, RT530, RT531, RT532, RT533, RT534, RT535, RT536, RT537, RT538, RT539, RT540, RT541, RT542, RT543, RT544, RT545, RT546, RT547, RT548, RT449, RT550, RT551, RT552, RT553, RT554, RT555, RT556, RT557, RT558, RT559, RT560, RT561, RT562, RT563, RT564, RT565, RT566, RT567, RT568, RT569, RT570, RT571, RT572, RT573, RT574, RT575, RT576, RT577, RT578, RT579, RT580, RT581, RT582, RT583, RT584, RT585, RT586, RT587, RT588, RT589, RT590, RT591, RT592, RT593, RT594, RT595, RT596, RT597, RT598, RT599, RT600

  • Danfoss MC Series: Including MC1, MC2, MC3, MC4, MC5, MC6, MC7, MC8, MC9, MC10, MC11, MC12, MC13, MC14, MC15, MC16, MC17, MC18, MC19, MC20, MC21, MC22, MC23, MC24, MC25, MC26, MC27, MC28, MC29, MC30, MC31, MC32, MC33, MC34, MC35, MC36, MC37, MC38, MC39, MC40, MC41, MC42, MC43, MC44, MC45, MC46, MC47, MC48, MC49, MC50, MC51, MC52, MC53, MC54, MC55, MC56, MC57, MC58, MC59, MC60, MC61, MC62, MC63, MC64, MC65, MC66, MC67, MC68, MC69, MC70, MC71, MC72, MC73, MC74, MC75, MC76, MC77, MC78, MC79, MC80, MC81, MC82, MC83, MC84, MC85, MC86, MC87, MC88, MC89, MC90, MC91, MC92, MC93, MC94, MC95, MC96, MC97, MC98, MC99, MC100

  • Danfoss SC Series: Including SC01, SC02, SC03, SC04, SC05, SC06, SC07, SC08, SC09, SC10, SC11, SC12, SC13, SC14, SC15, SC16, SC17, SC18, SC19, SC20, SC21, SC22, SC23, SC24, SC25, SC26, SC27, SC28, SC29, SC30, SC31, SC32, SC33, SC34, SC35, SC36, SC37, SC38, SC39, SC40, SC41, SC42, SC43, SC44, SC45, SC46, SC47, SC48, SC49, SC50, SC51, SC52, SC53, SC54, SC55, SC56, SC57, SC58, SC59, SC60, SC61, SC62, SC63, SC64, SC65, SC66, SC67, SC68, SC69, SC70, SC71, SC72, SC73, SC74, SC75, SC76, SC77, SC78, SC79, SC80, SC81, SC82, SC83, SC84, SC85, SC86, SC87, SC88, SC89, SC90, SC91, SC92, SC93, SC94, SC95, SC96, SC97, SC98, SC99, SC100

  • Danfoss SR Series: Including SR1, SR2, SR3, SR4, SR5, SR6, SR7, SR8, SR9, SR10, SR11, SR12, SR13, SR14, SR15, SR16, SR17, SR18, SR19, SR20, SR21, SR22, SR23, SR24, SR25, SR26, SR27, SR28, SR29, SR30, SR31, SR32, SR33, SR34, SR35, SR36, SR37, SR38, SR39, SR40, SR41, SR42, SR43, SR44, SR45, SR46, SR47, SR48, SR49, SR50, SR51, SR52, SR53, SR54, SR55, SR56, SR57, SR58, SR59, SR60, SR61, SR62, SR63, SR64, SR65, SR66, SR67, SR68, SR69, SR70, SR71, SR72, SR73, SR74, SR75, SR76, SR77, SR78, SR79, SR80, SR81, SR82, SR83, SR84, SR85, SR86, SR87, SR88, SR89, SR90, SR91, SR92, SR93, SR94, SR95, SR96, SR97, SR98, SR99, SR100

  • Danfoss Dedicated Safety Relays: For specific applications like light curtains, emergency stops, and two-hand control.

  • Danfoss Configurable Safety Controllers: Including but not limited to the Flexi Soft series.


Common Danfoss Safety Relay Problems We Repair

Danfoss safety relays are built to last, but like any electronic component, they can experience failures over time. These failures can lead to unexpected downtime and compromise the safety of your operations. Some common issues we address include:

  • Failure to Activate: The relay does not switch on when the safety circuit is triggered.

  • Erratic Output: The relay output is unstable or inconsistent, leading to unreliable safety functions.

  • Communication Errors: The relay fails to communicate with other devices in the safety system.

  • Input Signal Problems: The relay does not respond to input signals from safety devices like light curtains or emergency stops.

  • Overvoltage or Undervoltage Issues: The relay is damaged due to voltage fluctuations.

  • Internal Component Failure: Faulty components such as capacitors, resistors, or integrated circuits.

  • Power Supply Problems: The relay's internal power supply fails, preventing it from operating correctly.

  • Short Circuits: Internal short circuits causing the relay to malfunction or trip protective devices.

  • Contamination: Dust, moisture, or other contaminants affecting the relay's performance.

  • Calibration Issues: Drift in calibration affecting the accuracy and reliability of the safety function.


Our Danfoss Safety Relay Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure your Danfoss safety relays are restored to optimal performance. Our process includes:

  1. Free Evaluation and Quote: We begin with a thorough evaluation of your faulty Danfoss safety relay to identify the root cause of the problem. We then provide you with a detailed repair quote, outlining the necessary repairs and associated costs. This evaluation is completely free of charge.

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

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use advanced diagnostic tools and techniques to pinpoint the exact components that need repair or replacement. We utilize specialized test benches and simulation equipment to replicate real-world operating conditions and ensure accurate diagnosis.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. We source our components from trusted suppliers and adhere to strict quality control standards. Our technicians are skilled in soldering, desoldering, and circuit board repair, ensuring precise and reliable repairs.

  5. Load Testing and Quality Checks: After the repairs are completed, we conduct rigorous load testing and quality checks to verify the relay's performance and reliability. We simulate various operating conditions and monitor key parameters to ensure the relay meets or exceeds original specifications.

  6. Calibration and Functional Testing: We perform thorough calibration of the Danfoss safety relay to ensure it meets the required safety standards. Functional testing is conducted to verify that all safety functions are operating correctly and reliably.

  7. Warranty-Backed Return and Support: We stand behind our repairs with a comprehensive warranty. Your repaired Danfoss safety relay is carefully packaged and returned to you promptly. We also provide ongoing technical support to address any questions or concerns you may have.


Nationwide Repair Services

Roc Industrial LLC provides Danfoss safety relay repair services to customers nationwide. Whether you are located in New York, Los Angeles, Chicago, Houston, Dallas, or any other city across the United States, we can help. We offer fast shipping options and quick turnaround times to minimize downtime and keep your operations running smoothly.


We understand the urgency of safety-related repairs and strive to provide the fastest possible service without compromising quality. Our logistics team works diligently to ensure your Danfoss safety relays are transported safely and efficiently to and from our repair facility. We also offer expedited repair services for critical situations where downtime is unacceptable.



Why Choose Roc Industrial LLC?

When you choose Roc Industrial LLC for your Danfoss safety relay repair needs, you benefit from:

  • 30+ Years of Experience: Our team has extensive experience in repairing a wide range of industrial electronic equipment, including Danfoss safety relays.

  • Warranty-Backed Repairs: We stand behind our repairs with a comprehensive warranty, giving you peace of mind.

  • Thousands of Parts in Stock: We maintain a large inventory of components, enabling us to complete repairs quickly and efficiently.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime and offer fast turnaround times, often with same-day service available.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring consistent quality and adherence to industry best practices.

  • Exceptional Customer Support: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process.

  • Component Level Repair Expertise: Our ability to repair down to the component level saves you money by avoiding unnecessary replacements.

  • Advanced Diagnostic Capabilities: We utilize state-of-the-art diagnostic equipment to accurately identify and resolve complex issues.

  • Commitment to Quality: We are committed to providing the highest quality repairs and ensuring your Danfoss safety relays are restored to optimal performance.

Don't let a faulty Danfoss safety relay compromise the safety of your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Danfoss safety relay repair. We are your trusted partner for all your industrial electronic repair needs. Our expertise in Danfoss safety relay troubleshooting and Danfoss safety relay testing ensures a swift return to full operational capacity. Roc Industrial LLC is committed to providing top-tier Danfoss safety relay refurbishment services with a focus on quality and customer satisfaction.

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