Control Techniques M300-03400056A Variable Frequency Drive
The Control Techniques M300-03400056A is a premium, safety-integrated variable frequency drive (VFD) from the Unidrive M300 range, engineered for heavy-duty industrial open-loop induction motor control and flexible automation integration. Operating on a three-phase 380-480 VAC input, this Size 3 frame AC drive delivers a rated power output of 2.2 kW (3.0 HP) and a continuous output current of 5.6 A. Designed to maximize machine throughput and satisfy strict functional safety regulations, it features dual Safe Torque Off (STO) inputs and modular network expandability.
Key Specifications & Electrical Performance
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Part Number: M300-03400056A
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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: 2.2 kW (3.0 HP)
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Rated Output Current: 5.6 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 fundamental advantage of the Unidrive M300 series over standard open-loop drives is its built-in functional safety hardware. The M300-03400056A features onboard dual-channel Safe Torque Off (STO) inputs certified to SIL3 (Safety Integrity Level 3) and PLe (Performance Level e) standards. This embedded integration allows machine builders to implement critical safety interlocks directly into the drive, completely eliminating the need for bulky external safety contactors, reducing enclosure space, and lowering total system hardware costs.
High-Performance Motor Control (RFC-A Mode)
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RFC-A Technology: Utilizes an advanced Rotor Flux Control algorithm that provides superior closed-loop current stability within an open-loop layout. This algorithm delivers excellent speed stability under highly variable loads, strong low-speed torque, and rapid dynamic response without requiring an encoder.
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Onboard Logic Programming: Features integrated programmable controller capabilities compliant with the IEC 61131-3 standard, allowing localized control applications to run directly on the unit.
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Robust Environmental Protection: Standard heavy-duty conformal coated printed circuit boards (PCBs) safeguard sensitive internal electronics from moisture, conductive dust, and high thermal stress.
Scalable Automation Networking and Quick Commissioning
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System Integration (SI) Slot: Features a built-in SI option slot that hosts external communication modules, allowing seamless interfacing with major plant PLCs via PROFINET, EtherCAT, Ethernet/IP, Modbus TCP, CANopen, and PROFIBUS.
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10-Parameter Fast Setup: A concise quick-start guide highlighting the 10 core settings needed for immediate drive commissioning is displayed directly on the front panel cover.
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Intuitive Diagnostic LED Keypad: Fitted with a high-contrast LED keypad for quick configuration access, real-time monitoring of system status, and rapid fault diagnostics.
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Configuration Cloning Layout: Fully compatible with the optional AI-Back-up or AI-Smart Adaptor to clone, store, and transfer parameter configurations using standard SD cards.
Recommended Industrial Applications
Engineered to maintain continuous heavy-duty duty cycles while minimizing machinery safety footprints, the M300-03400056A is optimized for:
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Safety-critical automated material handling systems and conveyor lines
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Heavy-duty ventilation systems, industrial blowers, and extraction fans
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High-reliability centrifugal and positive displacement fluid pumps
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Industrial mixers, packaging machinery, and commercial sorting lines
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