Mitsubishi Spindle Encoder TS5691

📌 What TS5691 Is

TS5691 is a serial (high-resolution) spindle or motor encoder / position detector used in CNC and servo control systems — primarily in Mitsubishi Electric CNC/spindle drive applications. It is part of the feedback system that provides position and speed signals to the drive/controller for precise motor/spindle control.

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🔩 Typical Use in CNC Spindle & Servo Systems

• Function: Provides encoder feedback for closed-loop motion control, giving information about shaft position and rotation for spindle or axis control.

• Application: Used with Mitsubishi spindle drives (such as MDS-series) and CNC controls that support serial encoder inputs.

• Incorporated into parameter settings for encoder resolution in the CNC controller — e.g., as a selectable detector type influencing how many pulses per revolution the controller should expect.

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📊 Encoder Signal Integration

In the CNC parameter setup (often in Mitsubishi manuals under parameters like SP020/RNG2):

• TS5691 is listed as a selectable encoder type with corresponding number of pulses per revolution depending on its gear tooth count:

  • 128 teeth → 2000

  • 180 teeth → 2880

  • 256 teeth → 4000

  • 384 teeth → 6000

  • 512 teeth → 8000

• These numeric values are used to configure the CNC so it reads motion feedback correctly.

  That means the same TS5691 hardware may be adapted for different resolution requirements by changing the gear wheel (tooth count) and configuring the controller accordingly. 

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🧠 Construction & Signals

According to machine manuals (e.g., Mazak adjustment guides):

• The TS5691 serial detector consists of:
  ✓ a sensor unit,
  ✓ a pre-amplifier module, and
  ✓ a detection gear/disc.

• It combines these to generate analog or digital encoder signals.

• The detector must be installed with correct gap and alignment (e.g., ~0.15 mm gap to gear) for reliable waveform output.

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⚠️ Alarm / Error Context

In some Mitsubishi drive error codes, TS5691 appears in lists of encoders where faults like relative position data errors, waveform errors, or memory errors may occur if the encoder signals are bad or misconfigured.

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🛠️ Summary