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MITSUBISHI Encoder
Brand: MITSUBISHI -
Cat: Encoder
Code:TT-A-11
| Combination name | Availability | Price |
|---|---|---|
Rotary Encoder – MITSUBISHI TT-A-11
The TT-A-11 is a rotary encoder (“Rotary Encoder”) manufactured by Mitsubishi Electric, used as a feedback component in Mitsubishi MELDAS CNC systems and MELSERVO series servo drives. It provides the angular position and speed signal to the controller, enabling closure of the position and velocity control loops. The unit is compatible with Mitsubishi servo drive units and is documented as a feedback component on various CNC machine tools.
The encoder is the feedback sensor that communicates the precise angular position and speed of the axis or motor to the CNC: without it the control loop cannot be closed and the axis becomes uncontrollable. A faulty encoder or one generating incorrect signals causes immediate alarms on the CNC, positioning errors, or irregular axis behaviour that can damage the workpiece or the machine itself.
Mitsubishi Electric is one of Japan’s leading industrial automation conglomerates, offering a complete range of CNC controllers (MELDAS/M700 series), servo drives (MELSERVO MR-J series) and motors for machine tools. Products in the TT series are legacy / discontinued: replacement is typically carried out using OSA/OSE series encoders or compatible equivalents available from specialist suppliers.
Main Technical Specifications
| Type | Incremental rotary encoder (Rotary Encoder) |
| Part number | TT-A-11 (TTA11) |
| Brand | Mitsubishi Electric |
| Known application | Mitsubishi MELDAS CNC systems; MELSERVO servo drives |
| Function | Angular position and velocity feedback for control loop closure |
| Supply voltage | 5 V DC (typical) |
| Resolution | ~2,000–10,000 pulses/rev |
| Output signal | Quadrature pulses (A, B, Z) differential RS-422 (typical) |
| Interfaces / connectors | Multi-pin connector compatible with MELSERVO drives |
| Weight | ~0.2–0.5 kg |
| Dimensions | diameter ~50–80 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
