Eltex Tension Monitor Sewing Machine Model, RS422 interfaced with miniature head The Eltex Electronic Tension Monitor (ETM) is an on-line device for sewing machines and similar applications. The device monitors the thread tension and also acts as a thread break detector. It enables the operator to keep the thread tension within the desired tension range for best operation and quality of the seam. Advantages • Improves sewing quality. • Allows you to operate with the correct thread tension. • Acts as a thread stop motion / thread break detector. • Protects against overtension. The ETM422 communicates through an RS422 interface to a host computer. This allows the user to set limits and to watch alarms and readings on the computer display. The sensing head on this model has a very low profile. See drawing on page 2 Features • Monitors thread tension according to limits set by the software through RS422 interface. • Programmable measuring ranges. • Programmable RS422 message with peak tension and monitor status for every stitch. • Programmable stop filter function. • Alerts the operator to dirt and dust in the thread tensioners. • Generates stop pulse when thread tension is outside the selected Stop Limits. • Makes it easier for the operator to set the correct bobbin tension. • Separate sensor head and electronics enables fitting in tight areas. • LED indication of monitored limits and synchronization input. • Alarm message possible through RS422 line and separate optocoupler output. • Factory calibrated – no manual reset. • ESD protected in

Technical features Cable length between sensor head end electronics box Measuring range adjusted within: 0–1200cN Colours are not relevant for finished product Available measuring ranges: Stop filter: 9600 baud, 1 start bit, 8 data bits, 1 stop bit, 1 parity bit, even parity Supply voltage Maximum current consumption Maximum start peak current Speed range Message alert pulse length 100 x 61 x 25 mm (width x height x depth) Sensor head dimensions Message alert output Synchronisation input Working ambient temperature range Sensor head dimensions Working ambient humidity range 0–95% RH (at 45°C)...