: Look for alarm codes and error messages related to transistor output or communication failures. Contentstack Setup & Debugging Checklist
It automatically compensates for changes in roll diameter.
Mitsubishi has designated the as the official replacement. The new model retains functional compatibility but requires new wiring and a mounting adapter (LE7-ATT) for installation. These products are no longer available from most suppliers, and second-hand devices are the only remaining source. If you are sourcing components for a legacy system, it is essential to carefully verify the authenticity and condition of any used equipment.
Mitsubishi Electric Corporation is a well-known Japanese multinational electronics and electrical equipment manufacturing company. The company produces a wide range of products, including industrial automation and control systems. One of its products is the Mitsubishi Tension Controller LE-30 CTA, which is designed to control tension in various industrial applications, such as web processing, unwinding, and winding. mitsubishi tension controller le 30 cta Manual
The manual specifies that the device acts as the "brain" between sensors and actuators.
The manual stresses . You must route the sensor cables (shielded twisted pair) away from motor leads. A common mistake documented in the manual’s troubleshooting guide is ground loops—it insists on a single-point ground for the controller.
If the controller displays an error code, refer to the "Troubleshooting" section of the JZ990D33001 Application Manual to identify the issue. 5. Alternatives and Discontinuation Notice : Look for alarm codes and error messages
Compatible with LX-TD type tension detectors (load cells).
0 to 24V DC for magnetic powder clutches/brakes, or 0 to 10V analog output for servo drives.
| Symptom | Likely Cause (via manual) | Solution | | :--- | :--- | :--- | | | Faulty sensor or excitation voltage missing | Measure between terminals 6 & 7; should be 5V DC. | | Tension reading drifts | Zero calibration not done after warm-up | Let unit run 15 min, repeat Zero/Span (Sec 5.2). | | Output always max | Broken analog output transistor or mis-set DIP switch for output direction | Check DIP switch #3. If correct, measure output at terminals 10-11. | | Erratic reading during acceleration | Incorrect damping setting | Increase "Damper" pot (labeled DAMP) per manual Section 7.3. | | "OL" on display | Overload – tension exceeds sensor range | Remove load. Check for mechanical binding. | The new model retains functional compatibility but requires
: Turn off all external power phases before starting installation or wiring to prevent electrical shock.
But reliable doesn't always mean "simple to set up." Here is everything you need to know to get your LE-30CTA running smoothly. ⚡ Key Features at a Glance