Mitsubishi Electric FR-A800 Series Inverter
IP55 Compatible FR-A806
MITSUBISHI ELECTRIC
Changes for the Better
FACTORY AUTOMATION
Key Features
- IP55 Compatible
- Direct installation near the machine
- Work hour reduction for inverter installation
- Wire and space saving
Global Impact of Mitsubishi Electric
Through Mitsubishi Electric's vision, "Changes for the Better" are possible for a brighter future.
Mitsubishi Electric is involved in many areas including:
- Energy and Electric Systems: A wide range of power and electrical products from generators to large-scale displays.
- Electronic Devices: A wide portfolio of cutting-edge semiconductor devices for systems and products.
- Home Appliance: Dependable consumer products like air conditioners and home entertainment systems.
- Information and Communication Systems: Commercial and consumer-centric equipment, products and systems.
- Industrial Automation Systems: Maximizing productivity and efficiency with cutting-edge automation technology.
Mitsubishi Electric brings together the best minds to create the best technologies, understanding that technology is the driving force of change. By bringing greater comfort to daily life, maximizing business efficiency, and keeping society running, they integrate technology and innovation for positive change.
Features: FR-A806 Inverter for Field Use
The FR-A806 inverter offers a highly protective structure with the IP55 rating, enabling installation near machines.
Inverter for installation outside of the enclosure
- Direct installation near the machine: Compatible with hostile environments (high humidity, dust). Allows installation near machinery or in available spaces, simplifying enclosure design for heat countermeasures and reducing enclosure size.
- Work hour reduction for inverter installation: Eliminates the need for additional enclosures, allowing easy installation. Facilitates installation outside the enclosure during drive system upgrades from commercial power to inverter drive.
- Wire and space saving: Features a built-in DC reactor and EMC filter, reducing wiring for peripheral devices. An optional disconnecting switch is available for remote ON/OFF control.
IP55 Rating Explanation
The IP code indicates specific protection ratings:
- First digit (protection against solid objects): Class 5 (Protection against dust; no ingress of dust that may inhibit normal operation). IP5X means protection when subjected to dust of 75 µm or smaller for 8 hours.
- Second digit (protection against water): Class 5 (Protection against water jets from any direction). IPX5 means protection when subjected to water jets from a nozzle (6.3 mm diameter) from 3 m distance for at least 3 minutes (approx. 12.5 liters of water).
* Water refers to fresh water at room temperature (5 to 35°C). *The FR-A806 is certified IP55 category 1. Indoor installation is recommended, avoiding direct sunlight, rain, etc.
Inverter Components
The FR-A846 inverter features several key components:
- A. Operation panel: Detachable (FR-DU08-01), with an optional LCD panel (FR-LU08-01) available.
- B. Circuit board coating: Conforms to IEC 60721-3-3 3C2/3S2 for enhanced environmental resistance.
- C. Gasket: Provides reliable sealing for IP55 compliance.
- D. Cable connection: Cable glands are available to ensure IP55 rating compliance for cable entries.
- E. EMC filter: Built-in filter for industrial (C3) or residential (C2) environments to reduce electromagnetic noise.
- F. Waterproof fan: IP55 rated cooling fan, detachable without disconnecting main wiring (for specific models).
- G. DC reactor: Built-in, compatible with EN 61000-3-2/12 standards, suppresses harmonics and improves power factor.
- H. Internal air circulation fan: Circulates air within the inverter for cooling.
Application Examples
The inverter is suitable for various applications, even in limited space or hostile environments:
- Waste transfer conveyor: Can be installed directly below, resistant to splashing water and falling debris.
- Building water pumps: Installable in narrow spaces near pumps, suitable for environments with water exposure.
- Marine equipment: Approved by ship classification standards, featuring a built-in EMC filter compliant with these standards.
- Shield machine: Installable near cooling pipes, minimizing cable length and suitable for dusty environments.
Key functions include:
- PLC function: Enables direct input from object sensors for comprehensive control by the inverter.
- PID pre-charge function: Prevents water hammer damage by avoiding rapid acceleration when pipes are empty.
- Real sensorless vector control: Enhances reliability in unfavorable environments by controlling motors without an encoder.
Lineup & Specifications
Inverter Model Naming Example: FR-A846-7.5K-1-60 C3
400 V Class:
| Item | Model | Applicable motor capacity (kW) | Rated capacity (kVA) | Rated current (A) | Protective structure | Approx. mass (kg) |
|---|---|---|---|---|---|---|
| FR-A846-[](-E) | 0.4K to 132K | 0.4 to 132 | (See table below) | (See table below) | IP55 | (See table below) |
Detailed specifications for capacity, current, power supply, etc., are available in the full specification tables in the original document.
Motor: SF-PRP Series
Premium efficiency dustproof/waterproof type motor (IP55) compliant with JIS C 4034-5, ensuring reliability in wet environments.
Connection Example
The connection diagram illustrates the integration of the inverter with various components:
Main Circuit Components:
- Three-phase AC power supply
- Molded case circuit breaker (MCCB), earth leakage circuit breaker (ELB), or fuse
- Magnetic contactor (MC)
- AC reactor (FR-HAL)
- Brake unit (FR-BU2)
- High power factor converter (FR-HC2)
- Power regeneration converter (FR-CV, MT-RC)
- Resistor unit (FR-BR, MT-BR5)
Control Circuit Components:
- Inverter (FR-A806)
- USB connector (for PC connection via FR Configurator 2)
- USB memory device (for parameter copying)
- Induction motor
- PM motor
The diagrams show how these components connect to the inverter's main and control circuits, including options like EMC filters and brake units.
Standard Specifications
General Specifications
| Item | Description |
|---|---|
| Control Method | Soft-PWM control, V/F control, Advanced magnetic flux vector control, Real sensorless vector control, Vector control, PM sensorless vector control |
| Output Frequency Range | 0.2 to 590 Hz (Upper limit 400 Hz for advanced controls) |
| Frequency Accuracy | Within ±0.2% of max. output frequency (25°C ±10°C) |
| Starting Torque | LD rating: 150% @ 0.3 Hz; ND rating: 200% @ 0.3 Hz (Real sensorless/vector control) |
| Acceleration/Deceleration | 0 to 3600 s, linear or S-pattern, backlash countermeasures available. |
| Stall Prevention | Adjustable range (LD: 0-150%, ND: 0-220%) |
| Torque Limit | 0 to 400% variable |
| Input Signals | Multiple inputs for frequency setting, start/stop, multi-speed, jog, etc. (terminals 1-4, CS, SD, PC) |
| Output Signals | Open collector (FM type), Relay outputs (A1/B1/C1, A2/B2/C2), Analog output (AM, CA) |
| Protective Functions | Extensive list including overcurrent, overload, undervoltage, phase loss, stall prevention, etc. |
| Warning Functions | Fan alarm, stall prevention warning, safety stop, maintenance signal, etc. |
| Ambient Temperature | -10°C to +40°C (non-freezing) |
| Humidity | 95% RH or less (non-condensing) |
| Altitude/Vibration | Max 1000 m; 5.9 m/s² or less (10-55 Hz) |
Outline Dimension Drawings
Detailed dimensional drawings are provided for different model series to aid in installation planning. These diagrams specify mounting hole locations, overall dimensions, and component placement.
Terminal Connection Diagrams & Specifications
Comprehensive diagrams and explanations are available for both FM type and CA type inverters, detailing the function of each terminal for main circuit and control circuit connections. This includes:
- Input Signals: AC power, control inputs (start, stop, speed selection, jog), frequency setting (analog/digital), auxiliary inputs.
- Output Signals: Relay outputs (fault, running, up to frequency), open collector outputs, analog outputs (frequency, current, voltage).
- Communication: RS-485 terminals, Ethernet connector, USB connectors (A and B).
- Safety Stop: Dedicated terminals for safety stop input and monitor output.
Specific terminal functions can be configured via parameter settings (Pr.178 to Pr.196).
Peripheral Devices
Recommendations for peripheral devices are provided to ensure proper system integration:
- Molded Case Circuit Breakers (MCCB) / Magnetic Contactors (MC): Sizing guidance based on inverter capacity and motor output.
- Cable Gauge: Recommended cable sizes for power and control wiring.
- Cable Glands and Nuts: Specific recommendations for IP55 compatible models to maintain sealing integrity.
Precautions for Use
Waterproof and Dustproof Performances:
- The inverter achieves IP55 rating when the operation panel, front cover, wiring cover, and cable glands are securely fixed.
- The inverter is not intended for submersion in water or washing under strong jets. Avoid specific liquids.
- Installation should be indoors, away from direct sunlight, rain, etc.
- Proper installation and tightening of covers and cable glands are crucial for maintaining IP ratings.
- Regular inspections are recommended.
Differences between FR-A840 and FR-A846: The FR-A846 offers a dust-proof and waterproof IP55 structure across all capacities, unlike the FR-A840 which has different enclosure types (IP20/IP00) based on capacity. The FR-A846 also features a built-in internal fan for cooling and different environmental specifications.
Global Network and Support
Mitsubishi Electric provides a comprehensive global network of FA Centers, Mechatronics Service Bases, Sales Offices, Production Facilities, and Development Centers to support customers worldwide. This network ensures business expansion and provides services comparable to those in Japan.
e-Factory Solution
Mitsubishi Electric's e-Factory solution integrates FA and IT technologies to reduce total cost across the supply chain and engineering chain. It enables visualization and analysis for improvements and increased availability at production sites.
Your Solution Partner
With a history dating back to 1870, Mitsubishi Electric is a globally recognized brand synonymous with premium quality. The corporation is active in diverse fields including space development, transportation, semiconductors, energy systems, communications, and automation. They offer a wide range of automation equipment, including PLCs, HMIs, CNC, EDM machines, inverters, servos, and motors, backed by extensive resources and a commitment to service and support.
Certifications
Mitsubishi Electric Corporation Nagoya Works is certified for ISO 14001 (environmental management systems) and ISO 9001 (quality assurance management systems).
Head Office: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
