Control Techniques M700-03400078A Variable Frequency Drive
The Control Techniques M700-03400078A is a premium, high-performance variable speed drive (VSD) from the Unidrive M700 range, engineered for maximum control capability in centralized and decentralized automation systems. Operating on a three-phase 380-480 VAC input, this Size 3 frame drive delivers a heavy-duty continuous output current of 7.8 A, offering 3.0 kW (4.0 HP) shaft power. Engineered to support high-speed motion synchronization, closed-loop servo profiles, and traditional induction motors, it features onboard real-time Ethernet, comprehensive feedback interfaces, and advanced programmability.
Key Specifications & Electrical Performance
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Part Number: M700-03400078A
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Manufacturer: Control Techniques (Nidec)
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Frame Size: Size 3
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Input Voltage: Three-Phase, 380 to 480 VAC $\pm$10% (48 to 62 Hz)
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Output Phase: Three-Phase
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Motor Shaft Power (Heavy Duty): 3.0 kW (4.0 HP)
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Rated Output Current: 7.8 A
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Overload Capacity: 200% for 28 seconds (Heavy Duty)
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Ingress Protection Rating: IP21 / UL Open Class
High-Performance Closed-Loop Motor Control & Integrated Feedback
The defining technical advantage of the Unidrive M700 series is its highly versatile, universal motor control capability. The M700-03400078A supports high-bandwidth control of induction, permanent magnet, and high-performance AC brushless servo motors. Built-in, high-resolution feedback terminals support a wide range of industry-standard encoders, including EnDat 2.2, Hiperface, BiSS, SSI, SinCos, and incremental quadrature types, allowing for precise speed and position control loops without requiring auxiliary feedback modules.
Onboard Advanced Real-Time Ethernet & PLC Automation
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Dual-Port Real-Time Ethernet: Includes an onboard, dual-port Ethernet switch supporting IEEE 1588 V2 Precision Time Protocol (PTP) for synchronized drive-to-drive communication, network cycle times under 1 ms, and standard Modbus TCP/IP.
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Onboard Logic Programming: Features an integrated controller programmed via Machine Control Studio (CODESYS), allowing localized PLC sequences, complex motion profiles, and high-speed registration loops to run directly within the drive.
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Functional Machinery Safety: Built with a Safe Torque Off (STO) terminal certified to SIL3 / PLe standards, safeguarding mechanical processes while eliminating the need for bulky safety contactor circuits.
Scalability and Expandability
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Three System Integration (SI) Slots: Equipped with three separate SI slots to expand drive capabilities with secondary feedback modules, specialized dynamic industrial fieldbuses (such as PROFINET, EtherCAT, and PROFIBUS), or supplementary digital and analog I/O.
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Heavy-Duty Construction: Manufactured with standard conformal coated internal printed circuit boards (PCBs) to resist humidity, conductive dust particles, and operational temperature variance.
Recommended Industrial Applications
Engineered to deliver high dynamics and synchronized positioning control for critical automation systems, the M700-03400078A is optimized for:
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Multi-axis coordinated packaging lines and rotary cutters
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High-precision rotary indexing tables and dynamic flying shears
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Automated test benches and dynos requiring precise torque control
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Textile production lines, winders, unwinders, and tension controllers
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