400 V class drive, 230 A ND — what that means for a pump or conveyor
The FR-E840-0230-4-60 is a Mitsubishi FR-E800 series inverter rated for 400 V class three-phase input, delivering 230 A ND (normal duty) continuous output current. That 230 A figure is the current the drive can supply to a standard variable-torque load like a centrifugal pump or fan without derating — it's the number you match to the motor nameplate full-load amps when sizing for constant-torque applications like conveyors or compressors, you'd typically step up one frame size.
Coated boards, no plated conductors — the corrosion trade-off
The circuit board coating is a conformal coating that protects against moisture, dust, and mild chemical exposure — a real advantage in washdown areas or humid panel environments. The trade-off is that plated conductors are not included, meaning the power terminals and bus bars are bare copper or tin-plated, not silver- or nickel-plated; in high-sulphur or coastal atmospheres you may want to budget for external terminal treatment or a sealed enclosure. The safety stop signal is fixed to source logic, so the drive expects a 24 VDC source signal on the safety input — if your safety relay or light curtain uses sink logic, you'll need an interface relay or a different drive variant.
Monitoring and initial setup — what the -4 suffix tells you
The -4 suffix on the order code locks in the initial settings: the rated frequency defaults to 50 Hz, the analog monitoring output on terminal AM is set to voltage, and the input signal logic is source. If your site runs 60 Hz or prefers current output for the meter, those parameters are adjustable in the drive's setup menu, but the factory default is 50 Hz voltage-source — a point to flag during commissioning so the first power-up doesn't trip on a frequency mismatch.