Baumer N 140 - Manual (Page 3)

N 140
www.baumer.com 3
1.2. SPA description and explanation
Mounting the spindle position display (SPA) is by docking the hollow shaft to the end of the spindle shaft. The
hollow shaft is fixed by hexagon screw to the spindle shaft and secured by power grip.
This way, the SPA is mounted over-hung and secured against torsion at rear of the housing by the attached
spreader pin. The spindle position display features an absolute multiturn sensing system allowing to capture the
position after several turns of the spindle even in powerless status. The position data will be retained even in
case of power failure (min. 10 years).
The current position value is displayed in the two-line backlit LCD display (2x 6 digits, numeric). Simultaneously,
in the same display the target transmitted by the control (master) is indicated. Two arrows show the editing
engineer the direction the spindle is to be turned in order to align the current value with the target. As soon as
the current value equals the target and is within the allowable tolerance, the target will disappear. The SPAs are
networked by 30 cm cable providing male and mating connector.
Upper line of the display, „target“
Arrows indicating the direction of rotation for target/current value alignment
Bottom line of the display, „current value“