Unlike modern auto-tuning controllers, the LE-30CTA requires manual PID tuning. The manual provides a starting rule of thumb:
A dedicated table in the manual matches PID values to material type (e.g., thin film: low P/high I; thick paper: high P/low I).
Modern controllers like the Mitsubishi LE-50 or a Dover Flexo DFE-700 offer:
However, they require new sensor wiring understanding. If your LE-30CTA manual feels like Latin, the digital transition will be French. Keep the old manual for sensor wiring reference.
The Mitsubishi LE-30CTA is an automatic, digital tension controller designed for high-precision regulation of long materials like paper, film, and metallic foil during unwinding, intermediate, and rewinding processes. Key Operational Features
According to technical documentation and manufacturer overviews provides advanced control for industrial automation:
High Precision Output: Generates a 0–24V control voltage for magnetic particle clutches/brakes or a 0–5V torque command for AC servo amplifiers.
Responsive Control: Features a minimum ON/OFF adjustment time of 25 ns using trigger inputs, enabling high-accuracy performance even on high-speed production lines.
Versatile Functionality: Includes linear and ring counter functions, preset capabilities, sampling counters, and periodic pulse counters to adapt to various machinery needs.
Digital Interface: Equipped with an LCD/LED digital display for real-time tension monitoring and setpoint adjustments. Critical Manual Instructions
The official Mitsubishi Instruction Manual highlights several mandatory safety and setup procedures:
Wiring Safety: Always turn OFF all phases of the external power supply before installation or wiring to prevent electric shock or equipment failure.
Noise Prevention: Install the unit inside a shielded conductive control box and maintain a distance of at least 100mm (3.94 inches) between power cables and signal lines to avoid signal interference.
Grounding: Perform Class D grounding (resistance of 100Ω or less) and avoid common grounding with high-voltage electrical systems.
Initial Setup: Follow the manual's flowchart for zero-point and span adjustment of the tension detector to ensure the system accurately measures material load. Market Availability
is available through several industrial retailers, often as "New Spot Goods" with expedited shipping. Condition: Available in New and Refurbished conditions.
Price Range: Generally found between $715.00 and $2,116.00 depending on condition and supplier.
Common Merchants: You can find listings at Radwell.com or various eBay sellers. Industrial Applications
This controller is essential for industries where material integrity is critical to the final product's quality: Printing: Prevents color misregistration and web breaks.
Packaging: Ensures consistent seal strength and label alignment.
Textiles: Manages warp yarn tension to prevent breakage or pattern distortion. mitsubishi tension controller le 30 cta Manual
Metalworking: Controls thin metal strips during slitting and coating. Go to product viewer dialog for this item. Mitsubishi LE30CTA
TENSION CONTROLLER, DIGITAL DISPLAY, INPUT 400VA, 100-240VAC 50/60HZ, OUTPUT, 3AMP, 24VDC Go to product viewer dialog for this item. LE-30CTA Mitsubishi Tension Controller
Mitsubishi LE-30CTA Tension Controller is a high-precision device designed to automate the tension of web materials—such as paper, film, and foil—by adjusting the torque of a clutch or brake based on feedback from tension detectors. Key Features & Technical Overview
The LE-30CTA manual highlights its role in high-speed, high-performance production lines through several advanced functions: mitsubishi electric france Dual Mode Operation : Switch between (feedback) and modes for flexible control. Multi-Function Counters
: Built-in linear, ring, sampling, and latch counter functions. High Precision
: Features a trigger input for ON/OFF time adjustments with a resolution as low as for minimal deviation. Connectivity
: Equipped with 2-channel DC 5/12/24V inputs and a maximum counting speed of 200k pulse/s Essential Manual Sections for Operators Referencing the official Mitsubishi LE-30CTN Application Manual
(a closely related series) and other technical guides, users should prioritize these sections: Installation & Wiring : Requires Class D grounding
(100Ω or less) and separation of control lines from power lines by at least 100mm to prevent noise. Calibration
: The manual detail "zero" and "span" calibration steps for tension sensors to ensure accurate web tension display. Troubleshooting
: Look for alarm codes and error messages related to transistor output or communication failures. Contentstack Setup & Debugging Checklist
For first-time users, the manual suggests a structured commissioning process: www.china-altec.com Mounting Check : Verify all connections and power supply stability. Sensor Output
: Check the tension sensor signal before starting the calibration. Zero/Span Calibration
: Adjust the measured tension display to match actual physical conditions. Mode Testing : Test the system in Manual Mode before transitioning to Automatic Mode for stable PID-based control. Product Lifecycle Note
Be aware that several models in this category, including the LE-30CTN(A) and LD-30FTA, have faced production discontinuation or parts shortages starting as early as 2021. If you are performing maintenance, consult the manual's replacement section for modern alternatives like the LE7-40GU-L www.mitsubishielectric.co.jp or specific alarm code definitions from the manual? LE-30CTN APPLICATION MANUAL - Contentstack
The Mitsubishi LE-30CTA is an automatic tension controller designed to manage the winding and unwinding of materials like paper, metallic foil, film, and wire. It functions by receiving signals from tension detectors (like the LX-TD or LX-TD-928) and generating a control voltage (0–24V) to drive magnetic particle clutches or brakes. Key Specifications Control Type: Digital automatic feedback.
Voltage Output: 0 to 24V DC for clutches/brakes or 0 to 5V DC torque commands for servo amplifiers. I/O Allocation: 32 mixed input/output points.
Input Range: Supports DC 5/12/24V inputs with a maximum counting speed of 200k pulse/s. Rated Operation Voltage: AC 100–240V. Operational Features
Modes: Includes both MANUAL and AUTO modes; users can toggle between displaying output voltage percentage or actual tension in kgf.
Functions: Features linear and ring counters, preset functions, and sampling counters to ensure high-precision control with deviations as low as 25 ns. A dedicated table in the manual matches PID
Stable Torque: The controller maintains stable torque even if current is repeatedly cycled, making it ideal for continuous slip operations. Safety and Installation Tips
Mitsubishi Tension Controller Le-30ctn at Best Price in Bhavnagar
Mitsubishi LE-30CTA is an automatic tension controller designed to maintain constant material tension in winding and unwinding applications. It is frequently grouped with the
series, which serves as its primary documentation reference for installation and operation. Contentstack Core Operation and Features Tension Control:
The unit regulates tension for materials like paper, film, foil, and wire by adjusting the torque of a powder clutch or brake. Feedback System: It receives signals from tension detectors (such as the
series) and compares them against a set value to output correction signals. Supports both
operation modes, with parameters adjustable via the front panel. Critical Safety and Installation Guidelines Grounding:
Perform single-point grounding on the controller side to the shield of the connected cable.
share a common ground with strong electrical systems to avoid noise-induced malfunctions. Wiring Separation: Keep control lines at least
away from main circuit or power lines to prevent electrical noise. Emergency Circuit: Always set an emergency stop circuit
the tension controller to ensure safety in case of device failure. Contentstack Manual Resources
While the LE-30CTA is a legacy model, its technical specifications and operation are covered in these manuals: Application Manual (LE-30CTN/A):
Provides detailed setup for feedback control and reel diameter calculations on Contentstack Instruction Manual: Basic handling and CE compliance details are available on Product Status:
This series has been discontinued and is typically replaced by the LE7-40GU-L Contentstack or trying to troubleshoot a particular error code on the display? LE-30CTN APPLICATION MANUAL - Contentstack
The Mitsubishi LE-30CTA is an automatic tension controller designed for high-performance unwinding, intermediate, and rewinding processes. 1. Core Functions & Compatibility
Automatic Control: It processes signals from tension detectors (like the LX-TD or LX-TD-928 series) to maintain constant tension in materials such as paper, film, and wire. Output Versatility:
Generates a 0–24V DC control voltage for magnetic particle or hysteresis clutches and brakes.
Outputs a 0–5V DC torque command voltage for AC servo amplifiers.
Replacement Notice: Production for the LE-30CTA was discontinued as of March 2024. The official successor model recommended by Mitsubishi Electric is the LE7-40GU-L. 2. Technical Specifications Feature Power Input I/O Points 32 input/output mixed points Output Type Transistor output (source type) Rated Output Voltage DC 12V to 24V Max Load Current 0.1A per point 3. Installation & Safety Guidelines
Mounting: The unit is "open type" equipment and must be installed inside a shielded conductive control box to ensure safety and minimize electrical noise. Modern controllers like the Mitsubishi LE-50 or a
Wiring: Maintain at least 100mm (3.94") of separation between control lines and high-power lines to prevent signal interference.
Grounding: Perform single-point grounding on the controller side of the shielded cable. Manual Resources
While a direct PDF download for the exact "CTA" suffix is often found in consolidated catalogs, the LE-30CTN Instruction Manual on Scribd or the LE-30CTN Application Manual via Contentstack covers the core operations and wiring for this series.
If you are looking to replace a broken unit or set up a new system, I can: Find stock availability for the discontinued LE-30CTA.
Provide detailed wiring diagrams for specific detector types.
Help you compare the LE-30CTA with its successor, the LE7-40GU-L. Which of these would be most helpful for your project? LE-30CTN APPLICATION MANUAL - Contentstack
Based on the official troubleshooting flowchart of the LE-30CTA manual, here are the top 5 error symptoms and their remedies.
| Symptom | Likely Cause (via manual) | Solution | | :--- | :--- | :--- | | Display locked at "0" | 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. |
Note from the manual: The LE-30CTA uses a non-volatile EEPROM for parameters, but a dead internal battery (CR2032 on older revisions) can cause loss of calibration after power cycle. Replace battery every 5 years.
Given that this is a discontinued product, here are the legitimate sources (as of 2025):
Caution: Avoid fake "pay-per-download" sites that charge $50 for public-domain manuals. The LE-30CTA manual is copyrighted but freely distributed by Mitsubishi for existing users.
If the tension is oscillating (bouncing up and down) or reacting too slowly, you need to adjust the PID parameters.
How to enter Parameter Mode:
The Mitsubishi Tension Controller LE-30CTA Manual is more than a booklet; it is the key to consistent web processing. Whether you are zeroing a new roll, diagnosing an "OL" alarm, or wiring a vintage machine back to life, the manual’s systematic approach—from terminal pinouts to PID tuning tables—remains relevant decades after its printing.
While Mitsubishi has moved on to sleeker models, thousands of LE-30CTA units still run daily in packaging plants, label converters, and textile lines. By understanding its manual, you extend the life of a reliable industrial classic.
Final Checklist for New LE-30CTA Users:
With this guide and the original manual in hand, you are now equipped to master tension control on any web line—no touchscreen required.
Need specific page numbers or terminal diagrams? Search for the exact document: "Mitsubishi LE-30CTA Instruction Manual (Model: IB-66242)." This is the original part number for the 1998 edition.
I understand you're looking for a manual for the Mitsubishi Tension Controller LE-30CTA. However, I cannot directly create or reproduce the full copyrighted manual from scratch, as that would violate Mitsubishi Electric's intellectual property rights.
What I can do is provide a structured summary of typical specifications, connection guidelines, and operational notes based on common knowledge of this model, plus point you to legal sources for the actual manual.