The FR-F840-00023-1 is a 0.75 kW three-phase 400 V AC variable frequency drive from Mitsubishi Electric, belonging to the FREQROL-F800 series — the premium energy-saving inverter range engineered for pump, fan, and HVAC applications where optimised motor efficiency and advanced network integration are primary requirements. In stock at Atlantech Drives. Request your quote within 24–48 hours with worldwide shipping and 12-month warranty.
What Is the Mitsubishi FR-F840-00023-1?
The FR-F840-00023-1 is the entry-level 0.75 kW model of the FR-F840 sub-series, designed for three-phase 380–480 V AC supply systems. The -00023 designation refers to the rated output current of 2.3 A, and the -1 suffix indicates the standard global product variant. The F800 series represents the highest tier of Mitsubishi’s general-purpose inverter range, incorporating advanced energy-saving technologies — including optimum excitation control, automatic energy saving operation, and power factor correction — that deliver measurable reductions in total system energy consumption compared to basic V/F or sensorless vector drives. Built-in Ethernet (10BASE-T/100BASE-TX) is standard on all F800 models, providing direct SCADA and controller integration without optional communication cards.
Key Technical Specifications
- Rated output power: 0.75 kW
- Rated output current: 2.3 A
- Input voltage: 380–480 V AC, 3-phase, 50/60 Hz
- Output voltage: 0–480 V AC, 3-phase
- Output frequency range: 0–590 Hz
- Control method: Advanced optimum excitation control, sensorless vector, V/F
- Overload capacity: 120% for 60 seconds (fan/pump duty)
- Built-in brake transistor: Yes
- Built-in EMC filter: Yes (Class C2)
- Built-in Ethernet: 10BASE-T/100BASE-TX (MELSOFT, MC Protocol, Modbus TCP)
- Built-in PLC function: Yes (FR-E700 compatible sequence program)
- Communication options: CC-Link IE Field Network Basic (via Ethernet), PROFIBUS-DP, DeviceNet (via option cards)
- Certifications: CE, UL, cUL, RCM
- Enclosure rating: IP20
- Operating temperature: –10 to +50°C
- Dimensions (W × H × D): 85 × 170 × 135 mm
Architecture & Design Overview
The FR-F840-00023-1 is built on the F800 platform architecture, which integrates three distinct energy-saving mechanisms that operate simultaneously and independently. The optimum excitation control algorithm continuously adjusts motor flux to the minimum level required to produce the demanded torque, reducing iron losses by up to 20% compared to fixed V/F operation on lightly loaded motors — particularly significant for pump and fan applications that spend the majority of operating hours at partial load. The automatic energy saving function (Pr.60 = 1) extends this by monitoring input power and dynamically adjusting the output voltage waveform in real time to further minimise copper and iron losses. The built-in power factor correction function reduces the reactive current drawn from the supply, decreasing the apparent power demand and reducing distribution losses upstream of the drive. The built-in Ethernet port natively supports Modbus TCP — in addition to MELSEC MC Protocol — enabling direct integration with third-party SCADA systems and building management systems without protocol converters, which is a significant operational advantage in mixed-vendor HVAC and utility installations.
Installation Advice
Mount the FR-F840-00023-1 vertically in a ventilated enclosure with a minimum of 10 cm clearance above and below and 2 cm on each side. At 0.75 kW, internal heat dissipation is modest (approximately 25 W at full load), but the enclosure thermal budget must still account for this alongside other heat sources. Connect the Ethernet port to the site network using a shielded Cat5e or Cat6 cable — unshielded cables in electrically noisy industrial environments are a common cause of intermittent Ethernet communication dropouts. Assign a fixed IP address to the FR-F840 via the operation panel (Pr.1426–Pr.1429 for IP address octets) before connecting to the network, as DHCP-assigned addresses complicate PLC and SCADA connection configuration. For motor cable runs exceeding 30 m, enable the output side EMC filter function (Pr.72) to suppress capacitive leakage current — at 400 V, leakage current on long motor cables is more pronounced than at 200 V and can trigger the ground fault protection (E.GF) on the drive even with healthy motor insulation.
Frequently Asked Questions
Q: What is the main difference between FR-F840-00023-1 and FR-E740-016-NA at 0.75 kW?
A: The FR-F840 includes built-in Ethernet with Modbus TCP and CC-Link IE Field Network Basic support, advanced optimum excitation control with automatic energy saving, and a higher-specification EMC filter. The FR-E740 uses RS-485 Modbus RTU only and requires an option card for fieldbus connectivity. Specify the FR-F840 for networked HVAC and utility applications requiring Ethernet integration and maximum energy efficiency; specify the FR-E740 for general machine applications where RS-485 communication is sufficient.
Q: Does the FR-F840-00023-1 support PM motor control?
A: Yes. The F800 series supports IPM (interior permanent magnet) motor control via the PM motor control mode. Auto-tuning must be performed with the specific PM motor connected before commissioning. The PM motor control function is particularly useful for high-efficiency pump and fan systems using IE4 or IE5 class PM motors, which deliver additional energy savings beyond what is achievable with standard induction motors.
Q: Can the FR-F840-00023-1 be monitored remotely via a web browser?
A: Yes. The built-in Ethernet port includes a web server function accessible via standard web browser. Real-time drive status, output frequency, current, and alarm history can be viewed without MELSOFT or FR Configurator2 software — useful for remote status checks from tablets or smartphones on the plant network. Parameter modification via the web interface is limited; full parameter access requires FR Configurator2.
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