Mitsubishi SC-J3WJ4WCTC03M Control Signal Conversion Cable for MR-J3W/MR-J4W Servo Amplifiers

The Mitsubishi SC-J3WJ4WCTC03M is a control signal conversion cable designed for replacing MELSERVO MR-J3W series servo amplifiers with MR-J4W series units. It provides an amplifier-side interface between the existing MR-J3W control-signal cable and the MR-J4W2-_B servo amplifier input/output connector, allowing the original wiring layout to be reused during a renewal. The cable assembly is approximately 300 mm long and has a cable outer diameter of about 6 mm, with the servo amplifier connector included. It is intended for 200 V class MR-J3W and MR-J4W servo systems and supports the MR-J3W to MR-J4W transition covered by Mitsubishi Electric renewal tools. Typical use is in machine retrofits and servo amplifier replacements where MR-J3W amplifiers such as the MR-J3W-77B or MR-J3W-1010B are being changed to MR-J4W2 series drives. The part is a conversion cable only, and installers should follow Mitsubishi Electric wiring diagrams and replacement guides to match the existing control-signal pinout and machine specification.