Erhardt-leimer Do 3001 Manual -

The DO 3001 uses digital PID (Proportional, Integral, Derivative) control. Section 6.3 covers "Optimizing the Control Loop."

Manual Tip: Start with P-20 = 5.0, P-21 = 0.5s, P-22 = 0.1s. Then use the auto-tune function P-99 – the controller will test the actuator and set optimal values.

The "Manual" for the Do 3001 highlights a device built for the "dusty, oily, and high-vibration" environment of a weaving mill. Erhardt-leimer Do 3001 Manual

1. The Sensor Head: The sensor itself is typically a small, modular unit designed to be mounted directly in the thread path, often near the bobbin or the pre-tensioner. It is constructed from high-grade, wear-resistant materials (often specialized ceramics or hardened metals) to ensure that the constant rubbing of abrasive yarns (like denim cotton or polyester) does not degrade the sensor's sensitivity over time.

2. The Control Housing: The Do 3001 unit usually consists of a rugged cast aluminum housing containing the evaluation electronics. Unlike modern touchscreens, units of this era often utilized potentiometers (adjustable knobs) and DIP switches for configuration. This analog adjustment method is a key feature of the Do 3001 manual: The DO 3001 uses digital PID (Proportional, Integral,

A review of the operational guidelines for the Do 3001 reveals a specific philosophy of machine management.

The "Self-Test" Functionality: A standout feature detailed in the manual is the integrated testing function. When a weaver encounters a machine that won't start, the Do 3001 allows for a quick diagnostic. By pressing a test button on the unit, the electronics simulate a thread signal. If the machine runs during the test but stops when the test is released, the operator knows the issue is mechanical (a broken thread), not electrical. This drastically reduces downtime and technician call-outs. Manual Tip: Start with P-20 = 5

The LED Indicator: The Do 3001 simplified visual diagnostics. A prominent LED (usually green or red, depending on the revision) signals the status.

The controller supports four sensor types (Infrared, Ultrasonic, Double-Edge, and Line). Choosing the wrong sensor type in the menu results in a "Runaway Web." The manual contains the binary dip-switch settings and menu codes required to match your physical sensor.