Mitsubishi Electric FR-A840-15K-1 FR-A800 Series Variable Frequency Drive

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Manufacturer: Mitsubishi Electric
Product No.: FR-A840-15K-1
Country of origin:Съединени щати
Product Type: Variable Frequency Drives
Payment: T/T, Western Union
Weight: 9500g
Dimensions: 220 mm x 300 mm x 190 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Designed for heavy-duty industrial motor control, the Mitsubishi Electric FR-A840-15K-1 operates as a high-performance variable frequency drive engineered for high-torque and precision speed regulation. Part of the flagship FR-A800 series, this three-phase inverter incorporates advanced vector control algorithms to drive induction and permanent magnet motors with exceptional stability. It features an integrated 15 kW rated power capacity and built-in RS-485/422/232 interfaces, facilitating seamless integration into distributed control architectures. Designed for demanding applications such as extruders, centrifuges, and gantry cranes, this robust drive delivers high starting torque and precise velocity loop tuning to maintain operational uptime in harsh environments.

Features

Real Sensorless Vector Control: Achieves zero-speed high-torque control without requiring an encoder feedback interface.
Dual Overload Rating: Configurable for Normal Duty (ND) and Light Duty (LD) operational profiles to optimize motor performance.
Built-in PLC Functionality: Executes decentralized control logic and custom I/O configurations directly inside the drive processor.
Enhanced Safety: Built-in dual-channel emergency stop circuit conforming to ISO 13849-1 PLd / SIL2 standards.
Energy Optimization: Dynamic energy-saving algorithms adjust magnetic flux in response to shifting load demands.

Applications

High-inertia mechanical systems including industrial centrifuges and mixers.
Material handling systems, overhead hoists, and positioning gantries.
Heavy manufacturing machinery such as extruders, winders, and heavy-duty conveyor systems.
Variable torque applications including large-scale industrial fan arrays and high-pressure pumping stations.

Technical Specifications

Parameter	Specification Value
Manufacturer	Mitsubishi Electric
Model Reference	FR-A840-15K-1
Series	FR-A800
Applicable Motor Capacity	15 kW (Normal Duty)
Input Voltage Class	Three-Phase 380 to 500 V AC, 50/60 Hz
Output Rated Voltage	Three-Phase 380 to 500 V AC (proportional to input voltage)
Output Capacity	18 kVA
Embedded Communication	RS-232, RS-422, RS-485 (Modbus-RTU)
Protective Structure	IP20 (Closed Type)
Representative Standard	CE, UL, cUL
Dimensions (W x H x D)	220 mm x 300 mm x 190 mm
Shipping Weight (Calculated)	9.5 kg

Connections and Interfaces

Terminal Symbol	Description / Functional Assignment
R/L1, S/L2, T/L3	Three-phase AC power supply input terminals.
U, V, W	Three-phase AC output connections to the induction/PM motor.
P/+, PR	Connection terminals for optional external dynamic braking resistor.
STF / STR	Forward Start / Reverse Start command inputs.
SD	Common terminal for control input signals (isolated from analog common 5).
10, 2, 5	Analog speed setting input (+10V reference, 0-5V/0-10V input, analog common).

Empirical Engineering Insights

Alternative Models & Compatibility

This drive directly replaces legacy FR-A740-15K systems. While mounting footprints are physically identical, configuration parameters must be migrated. When commissioning via FR Configurator2 software, verify that parameter Pr. 189 (LDT detection level) and Pr. 570 (Multiple rating setting) are correctly configured to correspond with the load profile of the legacy unit.

Application Pitfalls & Engineering Notes

Operating this drive in closed, unventilated panels at ambient temperatures exceeding 40 degC requires a 10% derating of output current. Running the carrier frequency (Pr. 72) above 2 kHz on long motor cable runs (greater than 50 meters) can induce capacitive leakage currents, triggering E.THT (Inverter overload) or E.OC1 (Overcurrent during acceleration) faults.

Commissioning & Wiring Tips

To prevent electromagnetic interference in the analog speed reference loop, separate the 0-10V signal lines (Terminals 2 and 5) from high-voltage motor output lines by at least 30 cm. Ground the motor frame directly to the inverter's earth terminal and ensure the shield of the control cable is connected to earth at the drive side only.

Installation Guidelines

CRITICAL WARNING

Isolate all primary and control power sources before making physical connections to the drive. Wait at least 10 minutes after disconnecting power to allow internal bus capacitors to discharge. Always verify that the DC link voltage across terminals P/+ and N/- is below 30 VDC using a calibrated voltmeter before proceeding.

Mount the inverter vertically inside a dust-free and moisture-protected electrical enclosure, ensuring a minimum clearance of 50 mm above and below the cooling fans.

Connect the incoming three-phase supply power to mains input terminals R/L1, S/L2, and T/L3. Do not connect input power to output terminals U, V, and W.

Route motor output cables through a dedicated grounded conduit to terminals U, V, and W, maintaining physical separation from control and instrumentation cabling.

Connect control signals and safety circuits to the spring-clamp terminal block, ensuring correct configuration of sink/source logic switch.

Key Features:

#Mitsubishi FR-A800 Series #Variable Frequency Drives

What is the maximum continuous output power of this drive?

The drive is rated to deliver 15 kW of output power to a standard induction motor under normal duty configurations, with an output rating of 18 kVA.

Does this drive support sensorless vector control?

Yes, it incorporates Real Sensorless Vector Control, allowing high starting torque and accurate speed regulation without requiring an external encoder.

How long must I wait to service the drive after disconnecting power?

You must wait at least 10 minutes to allow the DC link capacitors to discharge. Always measure the DC voltage across terminals P/+ and N/- to confirm it is below 30 V before starting work.

Can I use an external braking resistor with this drive?

Yes, an external dynamic braking resistor can be connected directly to the P/+ and PR terminals to dissipate regenerative energy from high-inertia loads.

Глобална експресна доставка

Стандартна доставка: 4-6 работни дни чрез DHL, FedEx и UPS.
Експресна изпращане: Изпращане в същия ден за налични поръчки, направени преди 14:00 ч. (GMT+8).
Глобално покритие: Обслужваме над 150 държави, включително бърза доставка до Саудитска Арабия и ОАЕ.

Връщания и гаранция

30-дневна гаранция: Връщания се приемат за налични продукти в оригинална, фабрично запечатана опаковка.
12-месечна гаранция: Всеки индустриален компонент е подкрепен с нашата професионална техническа гаранция.

Поръчките се обработват и доставят от понеделник до петък (с изключение на официалните празници).

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Mitsubishi Electric FR-A840-15K-1 FR-A800 Series Variable Frequency Drive