What it is and what it does
The Mitsubishi MR-J4W2-1010B is a digital AC servo amplifier from the MELSERVO-J4 Series, packing two independent servo axes into a single enclosure. It drives two servo motors simultaneously, each rated up to 1 kW total output, making it a space-saving choice for gantry systems, dual-axis pick-and-place, or coordinated motion on a single panel subplate.
What the ratings mean for fit
The 1 kW rated output per axis (combined) governs motor selection: pair it with an HG-JR or HG-SR servo motor in the 1 kW class. The W2 designation confirms two axes, so the amplifier replaces two single-axis drives in the same panel, saving DIN rail space and reducing wiring between the drive cabinet and the machine.