Control Techniques M300-04400135A Variable Frequency Drive
The Control Techniques M300-04400135A is an industrial, safety-integrated variable frequency drive (VFD) from the Unidrive M300 range, engineered for heavy-duty open-loop induction motor control and scalable system automation. Operating on a three-phase 380-480 VAC input, this Size 4 frame AC drive delivers a rated power output of 5.5 kW (7.5 HP) and a continuous output current of 13.5 A. Built to maximize machine uptime while satisfying strict functional safety codes, it features dual Safe Torque Off (STO) inputs and modular network expandability.
Key Specifications & Electrical Performance
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Part Number: M300-04400135A
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Manufacturer: Control Techniques (Nidec)
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Frame Size: Size 4
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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: 5.5 kW (7.5 HP)
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Rated Output Current: 13.5 A
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Overload Capacity: 180% for 3 seconds (heavy duty), 150% for 60 seconds
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Ingress Protection Rating: IP21 / UL Open Class
Embedded Machinery Safety via Dual Safe Torque Off (STO)
The defining engineering advantage of the Unidrive M300 series is its onboard functional safety hardware. The M300-04400135A features dual-channel Safe Torque Off (STO) inputs certified to SIL3 (Safety Integrity Level 3) and PLe (Performance Level e) standards. This integrated architecture allows system designers to implement critical machine safety circuits directly into the drive, eliminating the need for external safety contactors, optimizing control panel space, and decreasing assembly costs.
Advanced Motor Performance via RFC-A Technology
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RFC-A Mode: Employs an advanced Rotor Flux Control algorithm that yields high-performance closed-loop current control in an open-loop design. This delivers exceptional speed stability under changing loads, strong low-speed starting torque, and dynamic transient response without an encoder.
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Onboard PLC Logic: Includes a built-in programmable controller compliant with the IEC 61131-3 standard, enabling localized automation scripts to execute directly on the drive.
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Environmental Reliability: Equipped with standard heavy-duty conformal coated printed circuit boards (PCBs) to defend sensitive internal electronics against moisture, conductive dust, and high operating temperatures.
Scalable Automation Networking and Quick Commissioning
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System Integration (SI) Slot: Features a built-in SI option slot to host external communication modules. The drive can interface with decentralized PLCs using PROFINET, EtherCAT, Ethernet/IP, Modbus TCP, CANopen, and PROFIBUS.
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Simplified Parameter Setup: A front-cover guide highlights the 10 core settings required for immediate motor commissioning and configuration.
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High-Contrast Keypad: Fitted with a fixed LED keypad for swift parameter adjustments, real-time status monitoring, and straightforward fault tracking.
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Rapid Configuration Transfer: Fully compatible with the optional AI-Back-up or AI-Smart Adaptor to clone, store, and transfer parameters using standard SD cards.
Recommended Industrial Applications
Engineered to withstand heavy-duty industrial cycles while minimizing machinery safety footprints, the M300-04400135A is optimized for:
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Safety-critical automated material handling systems and conveyors
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Heavy-duty extraction blowers, industrial fans, and ventilation lines
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Centrifugal and positive displacement fluid pumps
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Mixers, agitators, packaging machinery, and textile processing equipment
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