warp/m service manual - ADB Lighting Technologies

Technical Description6.3.5 Principe of operation by WARP/MThe importance by WARP/M is accuracy and good repeatability on Pan / Tilt.WARP/M uses 2 magneto-resistance sensors for each motor. The gear box ratio between the 2magneto resistance sensors gives an accurate measurement.The magneto-resistance sensors generate two 90° phase-shifted sinusoidal signals:A = VS (Oa+S sin (2θ))B = VS (Ob+S cos (2θ))Oa Offset voltage of the A bridgeOb Offset voltage of the B bridgeS Conversion ratio of the sensorVS Bridge voltage supply and gainθ Angle of magnetic field6.3.6 Explanation of Pan by WARP/MThe gear box ratio used by WARP/M is 1/10 for the pan motor, 5 motor turns are required to coverthe entire span. This means 10 electrical revolutions for the first magneto-resistance sensors, and 1electrical revolution (1/2 mechanical turn) for the second magneto-resistance sensor.6.3.7 Magnetic sensors connectorThe sensor connector is a MOLEX mini-KK series 1 x 5 male connector, with the following wiring:1 2 3 4 5+V analog (3.3V) Sense1 Sense2 GND GNDwww.adblighting.com Service Manual - page 29Issue 0.9