Mitsubishi Tension Controller Le 30 Cta Manual (2026)

Are you controlling a or an AC motor drive (VFD/Servo) ?

Inspect the output cable for exposed shielding. Measure the internal resistance of the clutch/brake to ensure it falls within the manufacturer's operational limits. Unstable Tension (Hunting)

provided by Mitsubishi Electric Europe covers safety, wiring, and core parameter settings for this generation of controllers. Instruction Guides:

| Terminal Marking | Function | Description | | :--- | :--- | :--- | | | Power Input | AC Power supply (Check label for 110V or 220V rating). | | G/⏚ | Ground | Earth ground for safety and noise reduction. | | E+, E- | Sensor Input | Connection to the Tension Load Cell/Meter. Polarity matters. | | M+, M- | Meter Output | Outputs voltage proportional to actual tension (for an external voltmeter). | | O+, O- | Control Output | Output to the Brake/Clutch driver or VFD analog input. | | RUN | Run Contact | External contact to start/stop the control loop. | | ALM | Alarm Contact | Relay contact closes if the unit detects a fault. |

Ensure you are using an adequate test weight during span adjustment. Check if the load cell layout mechanically binds or hits a physical stop. Tension Drifts or Hunts Continually mitsubishi tension controller le 30 cta Manual

The unit is designed to support multiple control modes, most notably (using feedback from load cells) and Manual Control (allowing operators to set a fixed output current), ensuring flexibility during maintenance or startup phases.

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from high-voltage or main circuit lines to avoid noise interference. M3.5 crimp terminals and tighten with a torque of 0.5 to 0.8 N·m.

Adjust based on material thickness, width, and tensile strength. Are you controlling a or an AC motor drive (VFD/Servo)

Adjusts how aggressively the controller responds to tension errors. Higher values speed up response but can cause oscillation.

Hang a known weight (calibration weight) on the tension roller and adjust the span value to match that weight. 3. Setting the Target Tension

Ground the shielded cable at a single point on the controller side. Installation

Generates a control voltage for magnetic particle or hysteresis clutches and brakes. | | E+, E- | Sensor Input |

Unlike modern auto-tuning controllers, the LE-30CTA requires manual PID tuning. The manual provides a starting rule of thumb:

Apply a known weight (test weight) to the rollers to calibrate the maximum tension scale.

Set the desired operating tension in the designated unit (e.g., N or kgf). 3.2 Taper Function Setup