19 Ionizer Series IZS31 Auto-balance sensor Measures the ion balance. Automatic ion balancing by means of signal input 50 25 0 .25 .50 Ion balance value (V) Time Automatic ion balance adjustment and reduction in ion balance adjustment man-hours using an auto-balance sensor Adjusts ion balance near the workpiece. Workpiece Ionizer . In the pulse DC mode, the ion balance can be automatically adjusted using an auto-balance sensor. . The object is not affected by the height of installation or any disturbance interference since the ionizer is designed to adjust the ion balance near the auto-balance sensor. . The auto-balance sensor may be connected only when adjusting the ion balance. Feedback sensor Detects the polarity of a discharged object and measures the charged voltage. . The speed of static electricity removal has been increased by reading the workpiece’s electrostatic potential with the feedback sensor and continuously emitting ions of a reverse polarity. . Operation mode after static electricity removal (ion balance: within ±30 V) can be selected. Energy saving run mode: Stops generating ions after static electricity removal to reduce power consumption. Air consumption can also be reduced by controlling the pneumatic valve with a static electricity removal completion signal. Note) The pneumatic valve must separately be procured. Continuous static electricity removal run mode: After static electricity removal, the ionizer changes to pulse DC operation and continues to remove static electricity to make it approach 0 V even if the ion balance is below 30 V. Discharge time (sec) 20 15 10 5 0 500 1000 1500 2000 Installation distance (L) (mm) Supply pressure: 0.1 MPa (7 l/min (ANR) per nozzle) Installation height of sensor: 10 mm Ionizer Workpiece L 3 2 1 0 .1 .2 .3 1 2 3 4 Time (sec) Charged voltage on workpiece (kV) With sensor . + . + . + Stop Mode Ion emission waveform Sensing DC Energy saving run Sensing DC Continuous static electricity removal run Pulse DC + charged image Time Charged voltage on workpiece Generates single-polarity ions when the ion balance is outside ±30 V. Goes into pulse DC operation when the ion balance is within ±30 V. Rapid elimination of static electricity using a feedback sensor
Discharge time 0.3 seconds Discharge time was reduced by improving the efficiency of the basic specifications for the feedback sensor, air purge pressure, and high frequency etc. Conditions / Static buildup decreased from 1000 V to 100 V Discharged object: Charged plate monitor (150 mm x 150 mm, capacitance 20 pF) Installation distance: 200 mm (Tungsten electrode with air purge) Without sensor Without sensor With sensor Without sensor With sensor Static electricity removal completed