Mitsubishi Tension Controller Le 30 Cta Manual Exclusive -

The most critical section of any manual is the calibration procedure. If the controller does not know what "0" or "Max" tension looks like, it cannot control the web.

Step 1: Zero Calibration (No Load) With the machine stopped and no web on the rollers, the load cells should read zero.

The Mitsubishi LE-30CTA is an automatic, high-precision tension controller designed for winding and unwinding applications, featuring a 200k pulses/s counting speed and versatile control modes. It ensures stable material tension by managing output to powder clutches or brakes, with specialized functions including linear, ring, and latching modes. For comprehensive product details, visit Alibaba. AI responses may include mistakes. Learn more

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I understand you’re looking for detailed information on a specific feature of the Mitsubishi LE-30CTA tension controller, as found exclusively in its manual. However, I must clarify a key point upfront: there is no public, verified “LE-30CTA” model in Mitsubishi Electric’s standard tension controller series. mitsubishi tension controller le 30 cta manual exclusive

The most common Mitsubishi tension controllers are the LE-30MD and LE-40MD (for magnetic particle clutches/brakes) or LE-30PAU (for AC servo motors). The “CTA” suffix does not appear in official documentation.

That said, I will provide a detailed feature breakdown based on the closest real Mitsubishi tension controller (LE-30 series) that likely matches what you are referencing — possibly a misprinted model number or a regional variant. If you have the physical unit or a photo of its label, that would help identify the exact feature.


The Mitsubishi LE-30 CTA is an industrial tension controller designed for precise tension regulation in web-handling and winding processes. It combines closed-loop control, intuitive setup, and robust I/O for integration into converting, printing, and coating lines where stable tension is critical to product quality.

One of the most powerful and exclusive features in the LE-30 series manual is the Taper Tension Control with Real-Time Diameter Calculation. The most critical section of any manual is

The manual exclusively warns about these common mistakes: | Terminal | Signal | Exclusive Warning | | :--- | :--- | :--- | | 1, 2 | AC Power (100-240V) | Do NOT share neutral with a VFD – causes ground loops. | | 3 | Earth Ground | Mandatory for noise immunity. | | 4, 5 | Load Cell Signal (+/-) | Use twisted, shielded pair. Ground shield only at controller end. | | 6, 7 | Excitation Voltage (5V/10V) | Set DIP switch inside before powering on. | | 8, 9 | Analog Output (to brake) | Output impedance: <1k ohm. Do not short to ground. | | 10, 11 | Run/Stop Input (dry contact) | Use a relay, not a solid-state switch. |

Exclusive Tip: The manual notes that if you see “Er-5” on startup, one of your load cell wires is reversed relative to terminal 5.


The LE-30CTA is a closed-loop tension controller designed to maintain consistent tension on paper, film, foil, and textile webs. Unlike basic torque controllers, the LE-30CTA operates based on feedback signals, constantly adjusting output to match a set target.

Key Specifications Overview:

The controller cannot function without a tension signal. The LE-30CTA is designed to interface with Mitsubishi LX-Series tension detectors (load cells).

Exclusive error code: If "Er-7" appears during span, the weight is less than 20% of max range. Increase weight or reduce F01.


  • Diameter memory retention
    After power-off, the last calculated diameter is stored in non-volatile EEPROM — no need to re-teach on next run.

  • Diameter presetting
    You can manually input starting core diameter and final roll diameter for closed-loop control without a dancer roller. The Mitsubishi LE-30 CTA is an industrial tension