MITSUBISHI ELECTRIC FR-D700 Inverter Complete Guide

Peripheral devices: The original braking resistors, reactors, filters, etc. can continue to be used, but it is necessary to confirm whether the resistance and power meet the minimum/maximum resistance range allowed by D700.

Alternative steps:

Power off, disconnect, and record the original wiring markings.

Remove the old frequency converter and install D700.

Connect according to the new terminal definition (especially pay attention to the difference between the control circuit common terminal SD and PC - drain type logic SD is connected to the common terminal, and source type logic PC is connected to the common terminal).

Import converted parameters through FR Configurator or manually input them.

No load test (disconnect the motor), check whether the running direction and frequency command are normal.

Load test run, monitor current and vibration.

Harmonic suppression and environmental compliance

11.1 Japanese Harmonic Suppression Guidelines (applicable to the Japanese market)

Most specifications of FR-D700 belong to the input current category of 20A or less, excluding specific users, and must comply with the JEM-TR226 guidelines. Determine whether it is necessary to install a reactor:

Single phase 100V input: 0.75kW and below → It is recommended to connect AC or DC reactors

Single phase 200V input: 2.2kW and below → It is recommended to connect AC or DC reactors

Three phase 200V input: 3.7kW and below → It is recommended to connect AC or DC reactors

For higher power, harmonic currents need to be calculated according to the "High Voltage Receiving Users" guide, and AC+DC reactors or high power factor converters (FR-HC2) may need to be installed.

11.2 Leakage Current and Leakage Protection

The PWM waveform on the output side of the frequency converter may generate leakage current between ground and line, which may cause the 30mA residual current circuit breaker to trip incorrectly. Solution:

The rated sensitivity current of the residual current circuit breaker (Mitsubishi NV series) for harmonic/surge suppression should be ≥ 10 times (total leakage current of the line).

Lowering the carrier frequency (Pr.72) can reduce leakage current.

Install an output side noise filter (FR-BSF01) or apply a magnetic ring to the motor cable.

11.3 RoHS and Environmental Protection

FR-D700 complies with the EU RoHS Directive (2011/65/EU) and has the<3>mark printed on its packaging, indicating that it does not contain harmful substances such as lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, etc.