Your Industrial Automation Questions Answered

In many cases, yes, repairing an industrial power supply with no output voltage is cost-effective. The issue is often caused by failed common components like input rectifiers, switching transistors, or filter capacitors, which are typically replaceable. Repairing can be significantly cheaper than purchasing a new industrial-grade power supply, especially for specialized or higher-power units. We always provide a free evaluation and quote to help you make an informed decision.

Both AC drives (Variable Frequency Drives or VFDs) and Servo Drives control electric motors, but they are designed for different levels of precision and performance: AC Drives (VFDs): Primarily used for controlling the speed of standard three-phase AC induction motors in applications like fans, pumps, and conveyors. They offer good speed control and energy savings but typically have less precise positioning and dynamic response compared to servo drives. Servo Drives: Designed for high-performance motion control applications requiring very precise control over position, speed, and torque. They are used with servo motors (which have feedback devices like encoders or resolvers) in applications like robotics, CNC machinery, and packaging equipment. Servo systems offer much faster response times and higher accuracy.

A blank HMI screen with the power light on often points to a few common issues. It could be a failed backlight (the illumination source for the LCD), a problem with the inverter or LED driver board that powers the backlight, or, less commonly, an issue with the video signal processing on the HMI's main board or a faulty LCD panel itself. We would typically start by testing the backlight and its power supply components.

A solid or flashing "Fault" light on a PLC indicates the processor has detected an error and has likely stopped program execution. 1. Check Diagnostics: The first step is to connect to the PLC with the appropriate programming software (e.g., Studio 5000 for Allen-Bradley, TIA Portal for Siemens) and check the PLC's diagnostic buffer or fault table. This will usually provide a specific fault code and description. 2. I/O Issues: Sometimes, a fault on a critical I/O module can cause a processor fault. Look for fault lights on individual I/O modules. 3. Power Supply Stability: Ensure the PLC's power supply is stable and providing the correct voltage. 4. Recent Changes: Consider any recent program changes, wiring modifications, or new hardware additions. If the fault code points to a hardware issue with the CPU or another module, repair or replacement may be necessary.

Communication errors between a PLC and HMI are common and can be tricky. Here are some frequent culprits: Physical Layer: Damaged or loose cables (Ethernet, serial), faulty connectors, or incorrect wiring. Network Configuration: Mismatched IP addresses, subnet masks, or gateway settings (for Ethernet). Incorrect node addresses or baud rates (for serial or fieldbus). Protocol Settings: Incorrect protocol selected on either the HMI or PLC, or mismatched protocol parameters. HMI/PLC Port Failure: A faulty communication port on either the HMI or PLC. Driver Issues: Incorrect or corrupted communication drivers (more common on PC-based HMIs or SCADA). Electrical Noise: Interference disrupting communication signals.

A whining noise and erratic movement in a servo motor can stem from several sources: Servo Drive Tuning: The servo drive's PID loops or other tuning parameters might be improperly set for the connected motor and load, causing instability or oscillation. Feedback Issues: Problems with the motor's encoder or resolver (e.g., loose connection, damaged cable, failing device) can send incorrect position/velocity data to the drive, leading to erratic behavior. Motor Problems: Mechanical issues within the motor itself (e.g., failing bearings) or electrical problems (e.g., a short in a winding) can cause noise and improper movement. Drive Output Stage: Less commonly, failing components in the servo drive's power output stage (IGBTs) could cause uneven power delivery to the motor. Mechanical Binding: Ensure the load connected to the motor is not binding or causing excessive resistance.

Roc Industrial LLC offers comprehensive repair services for a wide range of systems and components including Control Systems, Panel Controllers, Drives, Power Supplies, and Servo Motors. Our skilled technicians provide prompt and efficient repairs to minimize downtime and extend the lifespan of your equipment​.

Roc Industrial LLC is required to collect sales tax for shipments to certain US states. However, if you are tax-exempt, you can submit your tax exemption form to us. Please email your tax exemption forms to admin@rocindustrial.com. Upon receipt and verification of your form, we will process your order in accordance with your tax-exempt status.

Initiating a repair is easy. Simply fill out a form on our website. Our technicians will review your request and provide a detailed quote within 24 hours. We aim to perform all repairs quickly without compromising quality​.

Yes, all repairs are backed by a one-year warranty, ensuring longevity and reliability. We use high-quality parts and state-of-the-art diagnostic equipment for all repairs​.

Yes, our Sell Your Parts Service allows you to sell new, used, or malfunctioning industrial automation parts. We cover all shipping costs, whether domestic or international, and offer fair, competitive pricing​.

We use CAD and 3D printing technology to develop replacement parts, especially for obsolete equipment. This service is fast, cost-effective, and offers a one-year warranty on all produced parts. It's available across various industries for both prototypes and large production runs​.

We strive to provide you with an offer within 24 hours of receiving your request, making the process efficient and timely​.

Our core exchange program allows you to send us your old faulty item in exchange for a refurbished item. This is a cost-effective solution that reduces downtime and environmental waste​.

Our consulting services offer industry expertise, a customized approach, identification of automation opportunities, system upgrades, and cost-saving solutions. We help businesses improve efficiency, productivity, and accuracy while reducing costs and future-proofing operations​.

Our Preventive Maintenance program includes equipment inspections, diagnostics, lubrication, calibration, cleaning, and replacement of worn components. This service aims to increase reliability, minimize downtime, and extend equipment life​​​​.

You can contact us via the form on our website, by phone, or by email. Our team is ready to assist you with your industrial equipment needs.