The Mitsubishi MR-JE-3KW (standard model MR-JE-300A) is a 3kW AC servo amplifier from the cost-optimized MELSERVO-JE series, designed for high-performance yet economical motion control. It operates with 200-240VAC 3-phase input, delivering 11A rated output current. The JE series accepts both pulse train and analog (±10VDC) command interfaces in a single model, eliminating the need for separate positioning modules. With RS-422/RS-485 communication as standard, it integrates easily with Mitsubishi Simple Motion modules and third-party controllers supporting pulse/direction signals. Built-in features include auto-tuning, adaptive vibration suppression, and a one-touch tuning function for quick setup. The compact form factor with integrated cooling fan supports panel mounting. Typical applications include CNC lathe and mill axis drives, packaging machinery, textile equipment, injection molding, printing presses, and material handling systems where 3kW-class servo power is required at a budget-conscious price point.
**Q: What is the difference between MR-JE and MR-J4 series?**
A: MR-JE is the cost-optimized line with combined pulse/analog interface, 2.0kHz response, and power up to 3kW. MR-J4 is the premium line with SSCNET III/H network, 3.5kHz response, 22-bit encoder support, and power up to 55kW. For budget-sensitive standard applications up to 3kW, MR-JE is the recommended choice.
**Q: Which servo motors can this 3kW amplifier drive?**
A: The MR-JE-300A is compatible with Mitsubishi HG-KN (low inertia) and HG-SN (medium inertia) series motors up to 3kW rating, specifically the HG-SN302J motor. Cable sets MR-J3ENCBL and MR-PWS3CBL are required for connection.
**Q: Can this drive accept Step/Direction signals?**
A: Yes, the MR-JE supports pulse train input in multiple formats: Step + Direction, CW/CCW, and A/B phase (quadrature). This makes it compatible with most stepper-style motion controllers.
**Q: What is the maximum encoder cable length?**
A: Standard operation is specified up to 30m with Mitsubishi's recommended encoder cable. For longer distances up to 50m, use a signal repeater or consult Mitsubishi application engineering for derating.
**Q: Does the JE series support absolute position detection?**
A: Yes, when paired with an absolute encoder motor (e.g., HG-SN302J-S100), the MR-JE-300A supports absolute position detection via the battery-backed encoder. A lithium battery (MR-J3BAT) must be installed in the encoder cable.
