MITSUBISHI MDS-B-SPJ2-37 CNC Spindle drive unit.

The characteristics of this servo drive type MDS-B-SPJ2-37 are:
Rated input:
-3AC 200-230V 50/60Hz 13.5A (power board)
-AC 200-230V 50-/60Hz 0.3A (control board)
Rated output:
3.7kW - 3AC 15A

This MITSUBISHI ELECTRIC MDS-B-SPJ2-37 spindle drive unit is ready to replace your defective spindle drive and comes with a warranty.

Fitted with MITSUBISHI SJ-P3.7A Spindle motor.

MDS-B-SVJ2, MDS-B-SPJ2 and MR-J2-CT Series have been approved as the products which have been installed in the electrical enclosure. The minimum enclosure size is based on 150 percent of each MDS-B-SVJ2, SPJ2 and MR-J2-CT Series combination. And also, design the enclosure so that the ambient temperature in the enclosure is 55°C (131°F) or less, refer to the specifications manual. (MDS-B-SVJ2: BNP-B3937, MDS-B-SPJ2: BNP-B2164, MR-J2-CT: BNP-B3944) "The user must include the use of a 100 cfm fan spaced 4 in. above the drive.

(1) The unit has been downsized and reduced in weight with the incorporation of a high speed, high integration LSI, high speed DSP and IGBT

(2) The speed response has been improved with the high speed DSP, improving the cutting capacity and improving the cutting precision during positioning control.

(3) A smooth operation and short time orientation time have been realized by incorporating the high speed orientation method that enables direct orientation from high speeds.

(4) All spindle parameters can be set from the NC side CRT screen making operation easier.

MDS-B Series servo and spindle system outline
The MDS-A Series is a drive system that corresponds to the MELDAS M500 Series NC that has been developed to totally connected the servo drive and spindle drive sections. The MDS-B Series is the successor to the MDS-A Series, and has been developed to satisfy European Safety Standards. This Series has the following features.

Compact and lightweight

The converters that were conventionally built in each servo and spindle drive have been integrated into one unit. The drive system volume, installation area and weight have been drastically reduced with the incorporation of high density mounted electronic parts IGBT-IPM (intelligent Power Module) and the high performance heat radiating fin.

Standardization of dimensions

The outline has been standardized to the book end type, and by unifying the height and depth dimensions, installation in cabinets has been made easy. Furthermore, by matching the shape with the NC unit, an integrated appearance with the NC has been realized.

Low heat generation

By incorporating the IPM and using power supply regeneration in the servo drive, the amount of heat generated has been greatly reduced.

High speed and precision processing

A high speed CPU has been mounted on the control PCB, and a 100,000 pulse/rotation sub micron detector has been incorporated as a standard to allow faster and more precise interpolation.

By incorporating the stable position loop control (SHG control) method, having an outstanding response, the positioning time and tracking have been improved and the machine vibration during acceleration/deceleration has been reduced.

The cutting performance and cutting precision during position control have been improved by using the high speed CPU also for the spindle drive.

High speed spindle orientation

Smooth operations and minimum orientation times have been realized by using the high speed orientation method while allows direct orientation from the high speed during the spindle drive.

Features of the MDS-B Series

European Safety Standards compliant

This Series complies with the European Safety Standards (LVD). Refer to the section "Compliance to European EC Directives" for details.

Addition of power supply emergency stop input line

With the B Series, the external contactor can be directly shut off from the power supply even when the emergency stop hot line from the NC does not function for any reason.

(This function is validated with the rotary switch and connected drive parameter settings. Thus, the functions does not change from the conventional functions when used in the same manner as the A Series.)