Mitsubishi LE-40MTA-E Tension Controller

The Mitsubishi LE-40MTA-E is a dedicated tension controller designed for closed-loop control of web tension in unwinding, rewinding, and intermediate processing lines. It features PID regulation with multiple feedback options and provides analog output for driving magnetic particle brakes/clutches or torque control of AC/DC drives.

Control Inputs and Feedback

• Dancer position input: 0-10VDC or 4-20mA from potentiometer or position sensor

• Load cell input: Differential amplifier for two strain gauge bridges (350Ω each)

• Line speed input: 0-10VDC, 4-20mA or pulse (0-10kHz)

• Diameter calculation: Via ultrasonic or analog sensor

Output and Regulation

Setpoint and Display

4-digit LED display for tension setpoint and actual value. Keypad for programming tension reference, taper tension ratio, and PID parameters. Remote setpoint via 0-10VDC input. Two alarm outputs (relay, 2A @ 250VAC) for deviation and over-tension detection.

Power Supply and Electrical Ratings

• Supply voltage: 100-240VAC ±10%, 50/60Hz

• Power consumption: 15VA max

• Sensor excitation: 10VDC or 5VDC for load cells (selectable)

• Auxiliary output: 24VDC / 100mA for external sensors

Environmental and Mechanical

• Operating temperature: -10°C to +50°C

• Storage temperature: -20°C to +70°C

• Humidity: 35-85% RH non-condensing

• Dimensions (WxHxD): 96mm x 96mm x 110mm (panel cutout 92x92mm)

• Weight: 0.6kg

• Protection: IP65 front panel, IP20 rear

Communication and Connectivity

RS-485 Modbus RTU (optional LE-40MTA-E/485). Supports baud rates up to 38400. Parameters can be monitored and changed via Modbus master (PLC or SCADA).

Applications

Printing presses, laminators, slitter rewinders, coating machines, and textile processing lines. The LE-40MTA-E is commonly paired with Mitsubishi dancer rollers or magnetic particle brakes from various manufacturers.

Configuration and Setup

Autotune function automatically calculates optimal PID gains for the mechanical system. Manual tuning also available. Parameter storage in EEPROM (no battery required).