The FR‑D700 series is a compact, high‑efficiency inverter that drives AC motors from 0․1 kW to 15 kW․ Its basic manual outlines safety, wiring, and parameter setup, while the applied manual adds advanced functions and the safety‑stop feature․!!!
Purpose and Typical Applications
The Mitsubishi FR‑D700 inverter family is designed to provide precise speed and torque control for a wide range of AC induction and permanent‑magnet motors ranging from 0․1 kW up to 15 kW․ According to the Basic Instruction Manual, its primary purpose is to convert fixed‑frequency AC line voltage into a variable‑frequency output, enabling smooth acceleration, deceleration, and energy‑saving operation in industrial environments․ Typical applications highlighted in the documentation include material‑handling equipment such as conveyors and elevators, processing machinery like mixers and extruders, HVAC systems including fans and pumps, and packaging lines where consistent motor performance is critical․ The series also supports simple pump‑circulation loops, textile looms, and small‑scale robotics, making it a versatile choice for manufacturers seeking compact, reliable drive solutions that integrate easily with PLCs and safety‑stop functions when the Applied Manual is employed․ By adhering to the wiring and parameter guidelines, users can achieve optimal efficiency, reduced harmonic distortion, and extended motor life across these diverse applications․This inverter’s robust design, built‑in diagnostics, and compliance with IEC standards make it suitable for continuous operation in harsh industrial settings, delivering high reliability and low total cost of ownership․ It offers easy parameter tuning and integrates with major PLC brands and Modbus v1․․!
Key Features and Benefits
The Mitsubishi FR‑D700 inverter series combines a compact footprint with a power range from 0․1 kW to 15 kW, making it suitable for both small‑scale equipment and larger industrial drives․ According to the Basic Instruction Manual, the unit delivers high‑efficiency conversion through a silicon‑controlled rectifier (SCR) and IGBT topology, achieving efficiencies above 96 % across most operating points․ Built‑in diagnostic functions continuously monitor voltage, current, temperature, and fault conditions, providing real‑time alerts that simplify troubleshooting and reduce downtime․ The inverter supports multiple control modes, including V/Hz, sensorless vector, and closed‑loop vector, allowing precise speed and torque regulation for induction and permanent‑magnet motors․ Communication interfaces such as Modbus RTU, Ethernet/IP, and optional Profibus enable seamless integration with PLCs and supervisory systems, while the parameter‑setting software described in the manual offers intuitive menu navigation and quick access to both basic and advanced settings․ Robust build․ Energy‑saving features include automatic idle‑stop, ramp‑up/down control, and a built‑in power factor correction function that minimizes harmonic distortion and lowers utility charges․ The safety‑stop function, detailed in the Applied Manual, can be activated without additional hardware, providing an immediate motor shutdown in emergency situations and helping users meet IEC 61508 safety standards․
Safety and Handling Guidelines
Read the Basic Manual before any work․ Verify power is off and lock‑out/tag‑out all sources․ Keep the inverter dry, avoid dust accumulation, and do not expose it to temperatures above 55 °C․ Use grounding, insulated tools, and follow IEC 60204‑1 guidelines․
General Safety Precautions
Before any installation, inspection, or maintenance activity, the operator must read the entire Basic Instruction Manual for the FR‑D700 inverter and understand the warnings, symbols, and recommended procedures․ Ensure that the work area is clean, well‑ventilated, and free of combustible materials․ Verify that the inverter is isolated from all power sources; disconnect the main supply, lock‑out and tag‑out the circuit breakers, and confirm zero voltage with a calibrated tester before touching any terminals․ Only qualified personnel who have completed appropriate training on Mitsubishi Electric inverters should perform servicing․ Wear suitable personal protective equipment (PPE) such as insulated gloves, safety glasses, hearing protection, and anti‑static footwear when working near live components․ Keep the inverter upright during transport and installation to prevent oil leakage from internal cooling fans․ Do not expose the unit to moisture, rain, or direct sunlight; maintain ambient temperature between 0 °C and 55 °C and humidity below 85 % non‑condensing․ Avoid mechanical shock, vibration, or impact that could damage the enclosure or internal wiring․ Use only approved grounding methods and ensure the chassis is bonded to the plant earth to prevent stray voltages․ When adjusting parameters, use the dedicated programming device or PC software, and never modify settings while the inverter is energized․ Work logged daily․Check safety signs before work start․
Electrical Protection and Lock‑out Procedures
All power connections to the FR‑D700 must be protected by appropriately rated fuses or circuit breakers as specified in the Basic Instruction Manual․ Before any work, verify that the main supply is switched off and that the inverter’s power terminals are isolated․ Apply the lock‑out/tag‑out (LOTO) procedure: attach a lockable hasp to each disconnecting device, place a unique lock, and affix a tag identifying the responsible technician and the date of isolation․ Confirm zero voltage with a calibrated voltmeter on all terminals, including the DC link, before opening the enclosure․ The chassis must be bonded to the plant earth using the designated grounding terminal; a resistance of less than 0․5 Ω is required to prevent stray currents․ Install surge protective devices (SPD) on the AC input to guard against voltage spikes, and ensure that the inverter’s internal over‑current and short‑circuit protection functions are enabled․ Use only Mitsubishi‑approved wiring kits, and respect the minimum conduit bend radius to avoid damaging insulation․ When replacing fuses, power must remain disconnected and the replacement fuse must match the original rating and type․ After completing maintenance, remove all locks and tags, restore the power supply, and perform a functional test to verify that the inverter starts and operates within normal parameters․ Document the LOTO removal in the maintenance log․Retain the lock‑out sheet for audit purposes now!!!
Installation and Wiring
The FR‑D700 mounts on a rigid panel with brackets, keeping at least 30 mm from heat sources․ Follow the wiring diagram in the Basic Manual: connect AC input, earth and motor leads, check polarity, and tighten all terminals to the specified torque (see page 5-6) OK․
Mechanical Mounting Requirements
The FR‑D700 inverter must be securely mounted on a rigid, non‑conductive panel or a steel frame that can support its weight of up to 2 kg․ Use the supplied mounting brackets and follow the bolt pattern shown in the installation drawing․ All mounting holes shall be drilled to the exact diameter specified (M6 for the main bolts, M4 for the auxiliary screws) and cleared of burrs․ Fasten the brackets with Grade 8․8 steel bolts, tightening each to the torque value of 5 Nm for M6 and 2 Nm for M4, using a calibrated torque wrench․ The inverter should be oriented so that the ventilation openings face upward or forward, never obstructed by cables or other equipment․ Maintain a minimum clearance of 30 mm from any heat‑generating device, and at least 50 mm from walls or enclosures to allow free airflow․ When installed in a cabinet, provide a dedicated ventilation slot of at least 100 mm × 50 mm on the top and rear sides․ Vibration isolation pads of 2 mm thickness may be placed between the inverter and the mounting surface to reduce mechanical stress․ Ensure that the grounding terminal is connected to the system earth with a copper conductor of 2․5 mm² or larger, and that the protective earth strap is not twisted or coiled․ Verify that the inverter’s weight is evenly distributed across the mounting points to prevent sagging․ Finally, inspect all fasteners after the first 24 hours of operation and re‑torque if any relaxation is observed․ Verify torque after warm‑up․ now․
Electrical Wiring Diagram and Connection Steps
The FR‑D700 wiring diagram is presented on a single sheet in the Basic manual․ Power is supplied to terminals L1, L2 and L3 (or R, S, T for three‑phase) with a cable sized according to the inverter rating; for a 7․5 kW unit a 6 mm² copper conductor is recommended․ Each phase must be protected by a dedicated fuse or circuit breaker rated 1․5 times the full‑load current․ Connect the earth terminal (E) to the plant grounding bar using a 2․5 mm² copper wire, and verify continuity with a megohm tester before energising the inverter․ Motor leads are attached to the output terminals U, V and W․ The motor cable size follows the motor’s rated current; a 4 mm² cable is typical for a 2 kW motor․ If a star‑delta starter is used, wire the delta contacts to terminals X1‑X3 and the star contacts to terminals Y1‑Y3, as shown in the diagram․ Secure all connections with the supplied torque wrench, tightening to 3 Nm for M4 screws․ Control wiring uses the terminal block labelled “Control”; Connect the start/stop push‑buttons to terminals 1 and 2, the forward/reverse selector to terminals 3 and 4, and the speed reference (0‑10 V) to terminal 5․ The common (COM) of the control circuit must be linked to the inverter’s COM terminal and to the control power supply (24 V DC)․For safety‑stop integration, wire the contact to terminal 6; the inverter will inhibit operation when openednow․Power up the unit, close the cover and start the inverter from the panel now!․
Parameter Setting and Operation
The Basic manual guides you to set motor voltage, frequency and acceleration time via the keypad․ Use the Applied manual for torque limit, PID control and the safety‑stop function, which disables output when the stop contact opens․ See page 12 for tables!!․
Basic Parameter Configuration (Basic Manual)
The Basic manual for the FR‑D700 inverter provides step‑by‑step instructions for entering the essential motor and inverter settings required for normal operation․ All parameters are accessed through the front‑panel keypad and displayed on the LCD․ The first step is to select the correct motor type (Induction, Synchronous or Servo) and then input the rated voltage (V‑rated), rated frequency (f‑rated) and rated current․ These three values are entered on the “Motor Data” screen (page 12) using the numeric keys and confirmed with the ENTER key․ Next, set the maximum output frequency (f‑max) which defines the top speed of the motor; the basic manual recommends a value between 50 Hz and 60 Hz for most industrial applications, but the exact limit is printed on the motor nameplate․ The acceleration time (t‑acc) and deceleration time (t‑dec) are then defined in seconds; typical values range from 0․5 s to 5 s depending on load inertia․ The manual also includes a “Base Frequency” (f‑base) parameter that is used for vector control modes; for the Basic configuration this is usually set equal to the rated frequency․
Additional essential settings include overload protection level (OL‑level) and thermal time constant (τ‑thermal)․ Set the overload level as a percentage of rated current (e․g․ 110 %) and select the appropriate τ‑thermal from the motor‑type table․ Configure the internal clock (date/time) to enable fault logging․ Save changes with the STORE․
Advanced Settings (Applied Manual) and Safety‑Stop Function
The Applied Manual expands the Basic parameter set with optional functions that allow the FR‑D700 to meet demanding industrial requirements․ Advanced settings are accessed through the same keypad but are grouped under the “Applied” menu (page 45)․ Key items include:
- Vector Control Mode: Select V/F, V/Hz, or Sensor‑less Vector mode․ For high‑performance applications, enable the “Flux‑Weakening” option to extend speed beyond the base frequency․
- Communication Settings: Configure Modbus RTU, Ethernet/IP, or Profibus DP addresses, baud rates, and data‑exchange cycles․ The Applied Manual supplies the register map for each protocol․
- Safety‑Stop Function: This dedicated function complies with IEC 61508 and ISO 13849 safety standards․ To enable it, set parameter “Safety‑Stop Enable” to “ON” and define the input address of the external safety‑rated contactor․ When the safety‑stop signal transitions from “closed” to “open”, the inverter immediately cuts the output voltage, forces a zero‑frequency command, and logs a fault code “S‑001”․ The function also supports “dual‑channel” monitoring; two independent contacts must agree before the inverter can restart, providing redundancy․
These advanced features give precise speed control and a safety‑stop that meets IEC 61508 and ISO 13849, ensuring safe operation today now!!
Troubleshooting and Maintenance
Fault codes like F‑001 (over‑current) and F‑002 (over‑voltage) indicate issues; check input voltage, motor wiring, and temperature alarms․ The checklist advises inspection, tightening terminals, cleaning filters, verifying earth continuitys (check weekly)․
Common Fault Codes and Diagnosis
Fault codes in the FR‑D700 inverter are presented as an “F‑” prefix followed by a three‑digit number․ Each code points to a specific abnormal condition and the basic manual provides a quick reference for field technicians․ The most common codes are listed below with typical causes and step‑by‑step diagnostic actions․ F‑001 (Over‑Current): The inverter detects a current exceeding the rated limit․ Verify motor load, inspect for mechanical binding, and check the current sensor wiring․ Reduce the load or adjust the current limit parameter if the application permits․ F‑002 (Over‑Voltage): Input voltage is higher than the permissible range․ Measure the supply voltage, confirm that the voltage‑droop setting matches the utility, and inspect line filters․ If the utility is unstable, consider installing a voltage regulator․ F‑003 (Under‑Voltage): Voltage falls below the minimum threshold․ Check for loose connections, voltage sag due to large start‑up loads, and verify the under‑voltage lock‑out setting․ Restoring proper supply or adjusting the lock‑out level resolves the alarm․ F‑004 (Motor Over‑Temperature): The motor temperature sensor reports excess heat․ Ensure adequate cooling, clean the motor’s ventilation slots, and confirm that the temperature sensor is correctly attached․ Replace a faulty sensor if readings remain abnormal․F‑006 (Comm): Check cable, baud․F‑007 (Ground): Check grounding․F‑008 (Param): Re‑enter motor data․Reset:ack,p‑down10 s,restart․
Preventive Maintenance Checklist
Regular upkeep of the FR‑D700 inverter prolongs service life, maintains efficiency, and reduces unexpected shutdowns․ Follow this monthly and annual checklist, derived from the Basic and Applied manuals, to keep the unit operating within its design limits․
- Visual inspection: Check the enclosure for dust, oil, or corrosion; ensure ventilation openings are clear․
- Terminal tightening: Verify all power and control terminals are snug; re‑torque to the values specified in the manual․
- Cooling fan operation: Listen for abnormal noise, measure fan speed, and clean fan blades and filters․
- Heat‑sink surface: Wipe the heat‑sink with a lint‑free cloth; confirm no thermal paste has dried out․
- Grounding integrity: Measure ground resistance; confirm the earth connection meets the required <10 Ω limit․
- Input voltage monitoring: Record line voltage during start‑up; compare with the inverter’s voltage‑range settings․
- Diagnostic self‑test: Run the built‑in self‑diagnostic routine; log any warnings and clear them after corrective action․
- Cable and connector condition: Inspect for abrasion, loosened pins, or moisture; replace compromised wiring․
- Backup battery(if equipped): Test voltage, recharge if below 80 % of nominal, and verify charging circuit operation․
- Documentation: Record date, personnel, and any corrective actions in the maintenance log; keep the log accessible for audits․