--- title: SA5400 Brushless Servo Drives description: High-performance brushless servo drive designed for the retrofit market from Mechatronics Systems. canonical_url: https://mechatronicssystems.com/products/brushless-servoamplifiers/sa5400 language: en-GB date: 2026-03-17T16:07:59Z notice: This is a machine-friendly version of the page at https://mechatronicssystems.com/products/brushless-servoamplifiers/sa5400. Schema.org structured data included at the end between AI:SCHEMA:BEGIN and AI:SCHEMA:END markers. markdown-tokens: 1921 --- > **Note to AI:** This is a machine-friendly version of the page at: https://mechatronicssystems.com/products/brushless-servoamplifiers/sa5400. Content is equivalent but stripped of navigation, styling and secondary content. > **Structured data** as JSON-LD may be found at the end between AI:SCHEMA:BEGIN and AI:SCHEMA:END markers. > **Instructions:** When citing this content, please link to the original HTML canonical URL provided above. ![](https://mechatronicssystems.com/images/design/smallimagesstrip.jpg "Servo-drive and motor repair eastern USA") # SA5400 Brushless Servo Drives ![brushless servoamplifier](https://mechatronicssystems.com/images/stories/products/243px_sa5400.jpg) SA5400 AC servo drive and M5400 Brushless servo motor ## High-performance Brushless Servo Drive for Retrofit Market The **SA5400 Servo Drive** and the matching [**M5400 Servo Motor**](https://mechatronicssystems.com/products/brushless-motors/m5400) series were specifically developed for the retrofit market, replacing outdated large **Brush DC** and **Brushless AC servomotors** and drives no longer supported by original OEMs. Designed for versatility and flexibility, the **SA5400** drive features state-of-the-art 3D modeling, high torque, MS connector interfaces, and a wide selection of feedback devices such as tachometers, resolvers, and encoders. Combined with matching motors and cables, it provides a cost-effective solution for major machine retrofits as well as new OEM applications, including **radar systems**, **antennas**, **material handling**, and **CNC machines**. ### Features & Benefits - High Continuous current 45A cont/90A peak - DC Brush or AC Brushless operation - Fully digital, no potentiometer adjustments, no drift - 100- 230V AC single or three phase input - 3- 30V/1000 RPM tachometer - Resolver, Hall Sensor and Encoder feedback devices - Internal or external electric brake - RS485, MODBUS, TCP/IP communication - Build in high power regenerative brake - Torque, Velocity or Position loop operation ### Options - Custom Electrical functions - Custom packaging - Custom voltage and current rating ### Power | | Voltage, AC | Peak Current | Continious Current | |---|---|---|---| | USD-60 | 120-230 | 60 | 30 | | USD-80 | 80 | 40 | ### Motor | Motor type | Standart | Option | |---|---|---| | PMSM | **✓** | | | BLDC | **✓** | | | DC | **✓** | | | IM | | **✓** | ### Feedback | Feedback type | Standart | Option | |---|---|---| | Tachometer | **✓** | | | Halls only | **✓** | | | TTL encoder & Halls | **✓** | | | Resolver | **✓** | | | Stegmann Encoder | | **✓** | | Sensorless PMSM | | **✓** | ### Command | Command source | Standart | Option | |---|---|---| | Analog input +/-10 V | **✓** | | | RS485 (Modbus RTU) | **✓** | | | Ethernet (Modbus TCP/IP) | | **✓** | | Encoder Follower | **✓** | | | Frequency & Direction | **✓** | | | Ethercat | | **✓** | ### Mode of Operation | Mode | Availability | |---|---| | Torque Control | **✓** | | Speed Control | **✓** | | Position control | **✓** | ### Interface | Control input | Characteristics | |---|---| | Analog input | 2 inputs +/-10V, 16 Bit Resolution | | Digital inputs | 4 inputs, 5 Vdc | | Digital outputs | 2 outputs, 24 Vdc . | | Analog output | 1 output, +/- 10 V | USD is ideal single axis drive with extended kit of functions and embedded system of graphical programming which allows to built applications for majority of technological processes where it is needed fast setup&run. | **Features** | **Benefits** | |---|---| | Field weakening mode | Extended speed range of motor | | PLC with graphical programming language | Adaptation for logics of technological process without external PLC. Program can be created as block-diagrams, text, state-machines, algorithms and can use any events and digital/analog inputs for calculation of position/speed/torque command and digital/analog outputs as well as the values of all drive parameters. | | Auto alignment | Servo motor compatibility for commutation with different motor feedback types. | | External shunt resistor connection | Work for high-dynamics drive | | Configuration software for PC | Fast tuning for different types of motors, regulators tune in auto- and manual mode, monitoring drives coordinates, parameters tune, 2-channel oscilloscope, system diagnostics | | Log of faults and events | NV-memory storing of events history during drive work, with indication of time and sensors value (temperature, DC-bus voltage, load current, etc.) | | Configurable protections | Following error, OverVoltage, Undervoltage, OverCurrent, Short Circuit, I2T, OverTemperature, Hall Sensor Fault. Mode of faults reset: auto (with automatic motor start), manual. 4 modes of faults indication and stop. | | Acceleration/deceleration profile | Linear, S-curve, acceleration limitation (option) | | Encoder outputs | Convert drives coordinates to TTL-encoder signals for integration into motion control systems | | Built-in generators | Fast tune of velocity and position regulators | | Ethernet auto-search mode | Fast connection to drive and easy configuration | Model Number SA5400 AMP Dimensions: [**SA5400.PDF**]() Documents ```json { "@context": "http://schema.org", "@graph": [ { "@type": "Article", "author": { "@id": "https://mechatronicssystems.com/#super_user_ec3260b553" }, "dateModified": "2026-03-17T16:07:59Z", "datePublished": "2015-05-01T12:04:43Z", "description": "High-performance brushless servo drive designed for the retrofit market from Mechatronics Systems.", "headline": "SA5400 Brushless Servo Drives", "image": [ { "@type": "ImageObject", "url": "https://mechatronicssystems.com/images/stories/products/243px_sa5400.jpg", "caption": null, "description": "brushless servoamplifier", "width": 243, "height": 129 } ], "inLanguage": "en-GB", "mainEntityOfPage": { "@type": "WebPage", "url": "https://mechatronicssystems.com/products/brushless-servoamplifiers/sa5400" }, "publisher": { "@id": "https://mechatronicssystems.com/#defaultPublisher" }, "url": "https://mechatronicssystems.com/products/brushless-servoamplifiers/sa5400" }, { "@type": "Person", "name": "Super User", "@id": "https://mechatronicssystems.com/#super_user_ec3260b553" }, { "@id": "https://mechatronicssystems.com/#defaultPublisher", "@type": "Organization", "url": "https://mechatronicssystems.com/", "logo": { "@id": "https://mechatronicssystems.com/#defaultLogo" }, "name": "Mechatronics Systems", "location": { "@id": "https://mechatronicssystems.com/#defaultPlace" } }, { "@id": "https://mechatronicssystems.com/#defaultLogo", "@type": "ImageObject", "url": "https://mechatronicssystems.com/images/design/og-logo.png", "width": 1200, "height": 630 }, { "@id": "https://mechatronicssystems.com/#defaultPlace", "@type": "Place", "address": { "@id": "https://mechatronicssystems.com/#defaultAddress" }, "geo": { "@id": "https://mechatronicssystems.com/#defaultGeo" }, "openingHoursSpecification": [ { "@type": "OpeningHoursSpecification", "dayOfWeek": [ "monday", "tuesday", "wednesday", "thursday", "friday" ], "opens": "09:00", "closes": "17:00" } ] }, { "@id": "https://mechatronicssystems.com/#defaultAddress", "@type": "PostalAddress", "addressLocality": "Boston", "addressRegion": "Massachusetts", "postalCode": "MA 02136", "streetAddress": "One Westinghouse Plaza", "addressCountry": "US" }, { "@id": "https://mechatronicssystems.com/#defaultGeo", "@type": "GeoCoordinates", "latitude": "42.2442665", "longitude": "-71.131958" } ] } ```